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Subject: Basic Sciences

  • Kamala Sohonie: First Indian Woman to earn PhD

    kamala

    Central Idea

    • On June 18, the Google Doodle commemorated Kamala Sohonie on her 112th birth anniversary.
    • Kamala Sohonie, the first Indian woman to earn a PhD in a scientific discipline, made significant contributions in the field of nutrition and fought against malnutrition among tribal children.
    • Despite facing gender bias, including from Nobel laureate CV Raman, Sohonie left a lasting impact on Indian science.

    Who was Kamala Sohonie?

    • Kamala Sohonie (nee Bhagvat) was born on June 18, 1911, in Indore, Madhya Pradesh.
    • Her father and uncle were chemists who had studied at the Tata Institute of Sciences (now IISc, Bengaluru).
    • Sohonie graduated in 1933 with a BSc degree in Chemistry and Physics from Bombay University, topping the merit list.

    Encounter with CV Raman

    • Sohonie faced rejection from CV Raman when she applied for an MSc degree at IISc.
    • Determined, she confronted Raman and challenged him to allow her admission.
    • Raman reluctantly agreed but imposed several conditions, including probation and restrictions on her status as a student.

    Academic Achievements and Work

    • Sohonie completed her course with distinction and secured admission to Cambridge University, where she completed her PhD in just 14 months.
    • Her research focused on potatoes, leading to the discovery of the enzyme ‘Cytochrome C’ and its role in cellular respiration.
    • Returning to India, Sohonie served as the head of the Department of Biochemistry at Lady Hardinge College, New Delhi.
    • She worked at the Nutrition Research Lab, Coonoor, and the Royal Institute of Science in Mumbai, studying various food items to identify their nutrients.

    Contribution to Nutrition and Social Impact

    • Sohonie’s notable work revolved around ‘neera,’ a palm extract drink recommended by Dr. Rajendra Prasad, India’s first President.
    • She demonstrated that ‘neera’ was a rich source of Vitamin C and other nutrients, making it beneficial for the health of malnourished tribal children and pregnant women.
    • Sohonie also collaborated with the Aarey Milk project to improve milk quality.
    • Beyond her scientific endeavors, she played a vital role as a founding member of the Consumer Guidance Society.

    Personal Life and Legacy

    • In 1947, Sohonie married MV Sohonie, an actuary, and the couple resided in Mumbai.
    • Kamala Sohonie’s accomplishments broke barriers and inspired future generations of women in science.
    • Her resilience against gender bias and remarkable contributions to nutrition and consumer protection remain an enduring legacy.

  • Controversial Species Names in Taxonomy

    taxonomy species name

    Central Idea

    • The field of taxonomy, which involves naming and classifying living beings, is currently engaged in a heated discussion regarding the renaming of species with objectionable scientific names.
    • These names often stem from problematic individuals associated with slavery, racism, derogatory terms, and racial slurs.
    • The debate has gained prominence in recent years, particularly in the wake of movements like Black Lives Matter, which seeks to address systemic racism and dismantle symbols of oppression.

    Controversial Naming Practices

    (1) Species Named after Controversial Figures:

    • Anophthalmus hitleri: The blind beetle named after Adolf Hitler by an entomologist who admired him gained popularity among Neo-Nazis, leading to its near-extinction.
    • Uta stansburiana: The lizard named after Howard Stansbury, known for his involvement in the massacre of Timpanogos Native Americans.
    • Hibbertia scandens: The plant named after George Hibbert, a prominent member of the pro-slavery and anti-abolition lobby.

    (2) Species Named with Derogatory Terms:

    • Hottentotta tamulus scorpion: The use of “Hottentot” as a derogatory term for Indigenous Black people in Africa.
    • Rauvolfia caffra: The quinine tree named with an offensive term considered hate speech against Black communities in South Africa.

    Rules and International Bodies

    • Nomenclature Codes: International bodies such as ICZN, ICNafp, ICNB, and ICTV govern the naming of animals, plants, bacteria, and viruses, respectively.
    • Validity and Publication: New names must be published in openly distributed publications and accompanied by detailed descriptions of typical specimens.
    ICZN: International Commission of Zoological Nomenclature

    ICNafp: International Code of Nomenclature for algae, fungi, and plants

    ICNB: International Code of Nomenclature of Bacteria

    ICTV: International Committee on Taxonomy of Viruses

    Scientific Naming Process

    • Two-part Scientific Names: Each species has two scientific names, with the first denoting the genus and the second identifying the species within the genus. Both names are italicized.
    • Naming Conventions: Names are often derived from Latin or Greek, reflecting distinctive features or characteristics of the species.

    Challenges in Changing Offensive Names

    • Limited Appetite for Change: International committees show little inclination to engage in debates on potentially offensive names, prioritizing stability and universality.
    • Criteria for Name Change: The rules state that name changes should only occur with profound taxonomic knowledge or to rectify names conflicting with established rules.

  • Hiroshima Process for AI Governance

    hiroshima

    Central Idea

    • G7 Summit in Hiroshima, Japan: Annual meeting of the Group of Seven (G7) countries was held in Hiroshima, Japan in May 2023.
    • Communique initiated Hiroshima AI Process (HAP): Official statement from the G7 leaders that established the Hiroshima AI Process (HAP) to regulate artificial intelligence (AI).

    What is the Hiroshima AI Process (HAP)?

    • Inclusive AI governance: The HAP’s objective is to promote inclusive governance of artificial intelligence.
    • Upholding democratic values: The HAP seeks to achieve the development and implementation of AI systems that align with democratic values and are considered trustworthy.
    • Focuses Areas: The HAP prioritizes discussions and actions related to generative AI, governance frameworks, intellectual property rights, transparency measures, and responsible utilization of AI technologies.
    • Commencement: The HAP is anticipated to conclude its activities and produce outcomes by December 2023. The process officially commenced with its first meeting on May 30.

    Notable Aspects of the Process

    • Liberal Process in AI development: The HAP places significant emphasis on ensuring that AI development upholds principles of freedom, democracy, and human rights.
    • High principles for responsible AI: The HAP acknowledges the importance of fairness, accountability, transparency, and safety as fundamental principles that should guide the responsible development and use of AI technologies.
    • Ambiguity with keywords: The specific interpretation and application of terms such as “openness” and “fair processes” in the context of AI development are not clearly defined within the HAP.

    Entailing the Process

    For now, there are three ways in which the HAP can play out:

    1. It enables the G7 countries to move towards a divergent regulation based on shared norms, principles and guiding values;
    2. It becomes overwhelmed by divergent views among the G7 countries and fails to deliver any meaningful solution; or
    3. It delivers a mixed outcome with some convergence on finding solutions to some issues but is unable to find common ground on many others.

    Example of the Process’s Potential

    • Intellectual property rights (IPR) as an example of HAP’s impact: Through the HAP, guidelines and principles regarding the relationship between AI and intellectual property rights can be developed to mitigate conflicts and provide clarity.
    • Addresses use of copyrighted materials: The HAP can contribute to shaping global discussions and practices concerning the fair use of copyrighted materials in datasets used for machine learning (ML) and AI applications.

    Setting the Stage

    • Varying visions of trustworthy AI: The G7 recognizes that different member countries may have distinct perspectives and goals regarding what constitutes trustworthy AI.
    • Emphasizes working with others: The HAP underscores the importance of collaboration with external entities, including countries within the OECD, to establish interoperable frameworks for AI governance.

    Conclusion

    • The establishment of the HAP signifies that AI governance is a global issue that involves various stakeholders and may encounter differing viewpoints and debates.

     

  • IIT-M generates Hydrogen from Seawater

    hydrogen

    Central Idea

    • Researchers from IIT-Madras have developed components for a cost-effective method of electrolyzing seawater to produce green hydrogen.
    • The current alkaline water electrolyzer technology is energy-intensive, requires an expensive oxide-polymer separator, and uses fresh water.

    Generating Green Hydrogen

    • Instead of using fresh water, the researchers developed an electrolyzer that utilizes alkaline seawater.
    • Carbon-based support material was used for the electrodes to minimize corrosion.
    • Transition metal-based catalysts were designed to catalyze both oxygen and hydrogen evolution reactions, improving the production of hydrogen and oxygen.
    • A cellulose-based separator was developed to allow hydroxide ions to pass through while preventing crossover of oxygen and hydrogen.

    How does Electrolysis take place?

    • The alkaline water electrolyzer involves two half-reactions at the anode and cathode.
    • At the cathode, water dissociates into H+ and hydroxide ions, with H+ ions converting into hydrogen.
    • Hydroxide ions produced at the cathode pass through the separator, and oxygen is generated at the anode.
    • When seawater is used, hypochlorite formation occurs at the anode, causing corrosion and reducing oxygen production. Impurities also affect the hydrogen evolution reaction at the cathode.

    How were the Catalyst and Electrode designed?

    • The carbon-based support material was used for both anode and cathode electrodes to prevent corrosion.
    • The catalyst coating on the support material enhances hydrogen production at the cathode and oxygen production at the anode.
    • Transition bimetals in the catalyst are selective toward oxygen evolution reaction, overcoming the challenge of hypochlorite formation.
    • Despite impurities adsorbed on the cathode, the catalyst promotes hydrogen evolution, increasing hydrogen production.

    What made this device novel?

    • The team developed a cellulose-based separator to separate the anode and cathode.
    • The separator allows hydroxide ions to pass through but minimizes the crossover of hydrogen and oxygen.
    • The separator shows high resistance to degradation in seawater.

    Experimental Results and Performance

    • The assembled electrolyzer achieved a seawater splitting voltage of 1.73 V at 10 mA/sq.cm and 26 degrees C.
    • The optimized parameters enable the electrolyzer to directly use photovoltaic-derived voltage for green hydrogen production.
    • Two prototypes of different dimensions were developed, producing hydrogen at rates of 250 ml/hour and 1 liter/hour.
    • A stack of three cells produced hydrogen at a rate of about 4 liters/hour.

    Back2Basics: Hydrogen Categories

    Production Method Carbon Emissions
    Gray Hydrogen Steam Methane Reforming (SMR) from fossil fuels High emissions
    Blue Hydrogen Steam Methane Reforming (SMR) from fossil fuels with carbon capture and storage (CCS) or carbon capture utilization and storage (CCUS) Reduced emissions compared to gray hydrogen
    Green Hydrogen Electrolysis using renewable energy sources (solar, wind, hydro) No carbon emissions
    Turquoise Hydrogen Methane pyrolysis from fossil fuels with carbon capture and storage (CCS) or carbon capture utilization and storage (CCUS) Reduced emissions compared to gray hydrogen

  • JATAN: Virtual Museum Software

    jatan

    Central Idea

    • The Union government plans to complete the 3D digitisation of all museums under its administrative control by the end of 2023.
    • The digitisation initiative using JATAN software aims to enhance the conservation and preservation of artefacts.

    What is JATAN Software?

    • JATAN is a virtual museum builder software used in Indian museums.
    • It enables the creation of a digital collection management system and is deployed in several national museums across India.
    • The objective of JATAN is to digitally preserve and document museum objects for the benefit of researchers, curators, and other interested individuals.
    • The software was designed and developed by the Human Centres Design and Computing Group at the Centre for Development of Smart Computing (C-DAC) in Pune.
    • JATAN facilitates the creation of digital imprints of preserved objects and monuments.
    • These digital imprints are integrated into the national digital repository and portal, making them accessible to the public.

    Benefits of 3D Digitisation

    • 3D digitisation offers improved conservation and preservation of artefacts, ensuring their long-term protection.
    • It enhances accessibility and exploration for museum visitors, providing new ways to engage with the collection.
    • The 3D models generated through digitisation can be used in augmented reality, virtual reality, and interactive learning experiences, creating immersive educational opportunities.
    • Furthermore, the digitisation process enables the potential for 3D printing, allowing for replication and detailed study of artefacts.

  • Fruit Flies: Unveiling their Contributions to Science and Medicine

    fruit

    Central Idea

    • Flies’ negative perception: Fruit flies often considered annoying pests, but their significance in biological and medical science is immense.
    • Economic and environmental importance: Flies, including fruit flies, play crucial roles as pollinators for plants and contribute to decomposition processes.

    Fruit Flies (Drosophila melanogaster)

    • Overview: Fruit or vinegar fly species known for its nuisance during summer.
    • Scientific significance: Drosophila melanogaster is a well-understood animal organism globally and has contributed to numerous Nobel Prize-winning discoveries in physiology and medicine.

    Partnership between Science and Flies

    • Early collaborations with flies: Biologist Thomas Hunt Morgan’s experiments with fruit flies revolutionized evolutionary and genetic research.
    • Discoveries in genetics: Fruit flies provided insights into genetic mutations, inheritance patterns, and the mapping of genes on chromosomes.
    • Understanding biological processes: Studies in fruit flies helped unravel mechanisms of development, gene regulation, and protein synthesis.

    Insights from Drosophila Research

    • Embryo studies: Microscopic examination of Drosophila embryos aided in understanding genetic defects and gene networks that control development.
    • Contribution to genetic medicine: Research on fruit flies helped decipher the genetic code, map DNA structure, and investigate inherited disorders.
    • Remarkable genetic similarity: Fruit flies and humans share striking biological similarities, allowing for the study of human biology and disease in flies.

    Versatility and Applications of Drosophila Research

    • Efficient and cost-effective research: Fruit flies offer a fast and versatile model organism for studying various aspects of human biology and disease.
    • Neuroscience and behavioral research: Fruit flies provide insights into learning, memory, sleep, aggression, addiction, and neural disorders.
    • Broad range of applications: Fruit flies are used to study cancer, aging, development, gut microbiome, stem cells, muscles, and the heart.

    Bridging Knowledge Gaps

    • Complementary to human studies: Fruit flies serve as a bridge to understanding complex human diseases and physiological processes.
    • Insights into neurodegenerative diseases: Although flies cannot fully mimic personality loss in Alzheimer’s disease, they contribute to studying neuronal death and related mechanisms.

    Paradigm for Scientific Discoveries

    • Accelerating research in complex organisms: Knowledge gained from fruit flies can be applied to more complex organisms, expediting scientific progress.
    • Global research community: Over 10,000 researchers worldwide utilize fruit flies for diverse areas of study, enriching our understanding of human biology and disease.

    Shifting Perspectives

    • Appreciating the significance: Fruit flies, despite their annoyance, play a vital role in advancing scientific knowledge and medical breakthroughs.
    • Rethinking flies’ presence: Viewing fruit flies in a different light, recognizing their value in research and their contributions to understanding the world around us.

  • Researchers observed rare Higgs Boson Decay

    higgs boson

    Central Idea

    • Physicists at CERN’s Large Hadron Collider (LHC) reported detecting a rare decay of the Higgs boson into a Z boson and a photon.
    • The decay process provides valuable insights into the Higgs boson and the nature of our universe.

    Large Hadron Collider (LHC)
    What is it? – The LHC is the world’s largest science experiment constructed by CERN.

    – It collides beams of hadrons, such as protons, for high-energy physics research.

    – Upgrades have enhanced the LHC’s sensitivity and accuracy for its third season of operations.
    Functioning – Protons are accelerated through a 27 km circular pipe using powerful magnets.

    – Magnetic fields guide the protons, reaching speeds close to the speed of light.
    Particle Collisions – Collisions of high-energy protons lead to the creation of various subatomic particles.

    – The LHC has achieved collision energies of up to 13.6 TeV.
    Scientific Discoveries at the LHC – LHC’s detectors, including ATLAS and CMS, discovered the Higgs boson in 2012.

    – Scientists have tested predictions of the Standard Model, observed exotic particles, and gained insights into extreme conditions.
    Future of the LHC – Upgrades are planned to increase the LHC’s luminosity by ten times by 2027, aiming to discover new physics.

    – There is a debate about investing in a larger LHC or smaller experiments to explore new realms of physics.

     

    Understanding the Higgs Boson

    • The Higgs boson is a type of subatomic particle that carries the force of particle movement through the Higgs field, present throughout the universe.
    • Interaction with Higgs bosons determines a particle’s mass, with stronger interaction leading to greater mass.

    Importance of Higgs Boson Decay

    • Studying how different particles interact with Higgs bosons and understanding the properties of Higgs bosons helps reveal information about the universe.
    • The recent detection of Higgs boson decay to a Z boson and a photon provides noteworthy insights.

    Role of Virtual Particles

    • Quantum field theory suggests that space at the subatomic level is filled with virtual particles that constantly appear and disappear.
    • Higgs bosons interact fleetingly with virtual particles during their creation, resulting in the production of a Z boson and a photon.

    New Result and Probability

    • The Standard Model predicts that the Higgs boson will decay into a Z boson and a photon 0.1% of the time.
    • The LHC needed to produce a significant number of Higgs bosons to observe this decay pathway.

    Confirmation and Statistical Precision

    • The ATLAS and CMS detectors, which previously observed the decay independently, combined their data for increased statistical precision.
    • Although the significance is not yet 100%, the combined data enhanced the confirmation of the Higgs boson decay.

    Significance for the Standard Model

    • Physicists seek to detect and validate the predicted decay pathways of the Higgs boson according to the Standard Model.
    • Precise testing of the model’s predictions helps identify potential deviations and explore new theories in physics.

    Implications for New Theories

    • Higher decay rates through the observed pathway could support new theories beyond the Standard Model.
    • Experimental evidence from the LHC could contribute to advancements in scientific understanding.

    Back2Basics: Standard Model

    • The Standard Model is a theoretical framework in physics that describes the fundamental particles and their interactions, except for gravity.
    • It provides a comprehensive understanding of three of the four fundamental forces: electromagnetic, strong nuclear, and weak nuclear forces.
    • Developed in the mid-20th century, the Standard Model has been highly successful in explaining and predicting the behaviour of elementary particles.

    Key points about the Standard Model:

    1. Particle Classification: The Standard Model classifies particles into two main categories: fermions and bosons.
    • Fermions: Fermions are particles that make up matter. They are further categorized into quarks and leptons. Quarks are the building blocks of protons and neutrons, while leptons include electrons and neutrinos.
    • Bosons: Bosons are force-carrying particles responsible for transmitting the fundamental forces. Examples include photons (electromagnetic force), gluons (strong nuclear force), and W and Z bosons (weak nuclear force).
    1. Fundamental Forces: The Standard Model explains the interactions between particles through the following fundamental forces:
    • Electromagnetic Force: Mediated by photons, this force governs the interactions between charged particles.
    • Strong Nuclear Force: Mediated by gluons, it binds quarks together to form protons, neutrons, and other particles.
    • Weak Nuclear Force: Mediated by W and Z bosons, it is responsible for certain types of radioactive decay.
    1. Higgs Field and Higgs Boson: The Standard Model introduces the concept of the Higgs field, an energy field that permeates the universe. Particles acquire mass through their interaction with this field. The existence of the Higgs boson, a particle associated with the Higgs field, was confirmed in experiments at the Large Hadron Collider (LHC) in 2012.

    Limitations and Open Questions:

    While the Standard Model has been highly successful in describing particle interactions, it has some limitations:

    • Gravity: The theory does not include a description of gravity, which is described by general relativity. Combining gravity with the other forces remains a challenge.
    • Dark Matter and Dark Energy: The Standard Model does not account for dark matter and dark energy, which are believed to constitute a significant portion of the universe.
    • Unification: The theory does not provide a unified description of all forces, including electromagnetism, weak nuclear force, and strong nuclear force.

  • India joins Centralised Laboratory Network (CLN)

    Central Idea

    • India has recently become a member of the Centralized Laboratory Network (CLN), which is a part of the Coalition for Epidemic Preparedness Innovations (CEPI).

    Centralised Laboratory Network (CLN)

    • CLN consists of 15 partner facilities in 13 countries and aims to test vaccines for use during pandemics and epidemic disease outbreaks.
    • It focuses on testing vaccines for pandemic and epidemic disease outbreaks.
    • It is part of the Coalition for Epidemic Preparedness Innovations (CEPI).
    • The network aims to standardize testing methods and materials.

    New members of the CLN

    • Indian Council of Medical Research-National Institute of Virology (ICMR-NIV) joins CLN.
    • Institute Pasteur de Dakar (IPD) from Senegal is a new member.
    • KAVI Institute of Clinical Research (KAVI ICR) and University of Nairobi Institute of Tropical and Infectious Diseases (UNITID) from Kenya join CLN.
    • Synexa Life Sciences from South Africa becomes a member.
    • Uganda Virus Research Institute (UVRI) from Uganda is also a new member.

    Objectives of the CEPI-funded network

    • The CEPI-funded network aims to identify promising vaccine candidates rapidly and accurately.
    • The network focuses on emerging infectious diseases.
    • The goal is to support sustainable regional outbreak preparedness infrastructure.

    CEPI-Funded Network Objectives

    • The CEPI-funded network, which includes CLN, has the primary objective of identifying the most promising vaccine candidates rapidly and accurately against emerging infectious diseases.
    • In addition to vaccine testing, the expanded network also aims to support the development of sustainable regional outbreak preparedness infrastructure.
    • By working collaboratively and sharing standardized methods and materials, the network enhances global preparedness for potential disease outbreaks.

     

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  • India discovers TOI 4603b Exoplanet

    exoplanet

    Central Idea

    • A new Jupiter-size exoplanet with the highest density known till this date has been discovered by an international team of scientists at the Exoplanet Research Group of the Physical Research Laboratory (PRL), Ahmedabad.
    • Massive giant exoplanets are defined as those with a mass greater than four times that of Jupiter.

    About the Exoplanet TOI4603b

    • The exoplanet is found around the star called TOI4603 or HD 245134.
    • It has a mass 13 times greater than that of Jupiter and a density of approximately 14 g/cm3.
    • Initially, NASA’s Transiting Exoplanet Survey Satellite (TESS) declared TOI4603 as a possible candidate to host a secondary body of unknown nature.
    • Using PARAS, scientists confirmed the secondary body as a planet, and it was named TOI 4603b or HD 245134b.
    • The exoplanet is located 731 light years away and orbits a sub-giant F-type star TOI4603 every 7.24 days.

    Note: An exoplanet, short for “extra-solar planet,” is a planet that orbits a star other than our Sun. These planets are located outside of our solar system and are not part of our planetary system.

    Unprecedented Density and Proximity

    • TOI 4603b is one of the most massive and densest giant planets discovered to date.
    • It orbits very close to its host star at a distance less than 1/10th the distance between our Sun and Earth.
    • Comparisons between the TOI-4603 star-planet system and the Sun-Mercury and Sun-Jupiter systems highlight the close proximity of TOI-4603 b to its star.
    • The exoplanet is situated more than 50 times closer to its star than Jupiter is to the Sun.
    • TOI-4603b is 13 times more massive than Jupiter.

    Utilization of Indigenous Technology

    • The discovery of this massive exoplanet was made using the indigenously made PRL Advanced Radial-velocity Abu-sky Search spectrograph (PARAS) at the 1.2 m telescope of PRL at its Gurushikhar Observatory in Mt. Abu.
    • The mass of the planet was measured precisely using PARAS.

    Uniqueness of the Discovery

    • The planet falls into the transition mass range of massive giant planets and low-mass brown dwarfs, with masses ranging from 11 to 16 times the mass of Jupiter.
    • Only fewer than five exoplanets are currently known in this mass range.
    • The rarity of such discoveries makes this finding significant.

    Insights into Formation and Evolution

    • The exoplanet has a surface temperature of 1670 K and is likely undergoing high-eccentricity tidal migration with an eccentricity value of approximately 0.3.
    • The detection of such systems provides valuable insights into the formation, migration, and evolution mechanisms of massive exoplanets.

    India’s Contribution to Exoplanet Discoveries

    • This marks the third exoplanet discovery by India and the PRL scientists using the PARAS spectrograph and the PRL 1.2m telescope.
    • Previous discoveries include K2-236b in 2018 and TOI-1789b in 2021.

     

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  • Devastating Frog Disease: Chytridiomycosis

    frog

    Central Idea

    • A multinational study has recently published a breakthrough method in the journal Transboundary and Emerging Diseases to detect all known strains of the amphibian chytrid fungus.
    • This method will enhance our ability to detect and research the disease and work towards finding a widely available cure.

    Chytridiomycosis: The deadly frog disease

    • Chytridiomycosis, also known as chytrid, is a fungal disease that has been decimating frog populations worldwide for the past 40 years.
    • The disease has caused severe declines in over 500 frog species and led to 90 extinctions, making it the deadliest animal disease known.

    How does it infect?

    • Chytrid infects frogs by reproducing in their skin, damaging their ability to balance water and salt levels.
    • The mortality rate is extreme, and the disease has affected a high number of species, causing devastating declines and extinctions.
    • The disease originated in Asia and spread globally through amphibian trade and travel.

    Limitations in diagnosis

    • Researchers traditionally used swabs and quantitative polymerase chain reaction (qPCR) tests, similar to COVID-19 testing, to detect chytrid in frogs.
    • The existing qPCR test could not detect chytrid strains from Asia, limiting research efforts.

    New and Improved qPCR Test

    • Researchers in India, Australia, and Panama have developed a new qPCR test that can detect strains of chytrid from Asia.
    • The test is also more sensitive, allowing for the detection of low infection levels and expanding the range of species that can be studied.
    • The test can also detect a closely related species of chytrid that infects salamanders.

    Understanding natural immunity in frogs

    • Some amphibian species, even those without an evolutionary history with chytrid, do not become sick when carrying the fungus, indicating natural immune resistance.
    • Frog immunity is complex, involving anti-microbial chemicals, symbiotic bacteria, white blood cells, antibodies, and more.
    • Research in Asia, where chytrid declines have not been observed, may provide insights into how resistance evolves and aid in finding a cure for affected regions.

     

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