Tmesipteris Oblanceolata | Current Affairs | Vision IAS
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    Posted 03 Jun 2024

    8 min read

    Tmesipteris Oblanceolata

    News research shows that Tmesipteris oblanceolata, a species of fork fern, has largest genome.

    • Genome is the complete set of genetic information in an organism.

    About Tmesipteris Oblanceolata

    • Contains 160 billion base pairs (the units that make up a strand of DNA) outstripping the human genome by more than 50 times.
    • It belongs to a primordial group of plants that evolved long before dinosaurs set foot on the earth.
    • Found only in New Caledonia and a few nearby islands in the Pacific Ocean and thrives on the trunks and branches of trees in rainforests.
    • Tags :
    • Tmesipteris oblanceolata
    • Genome

    Biocover

    A recent study has proposed a sustainable approach of microbial methane oxidation system (called as biocover) to control fugitive methane emissions from old dumpsites. 

    About Biocover

    • Biocovers are porous material layer laid directly on top of a landfill which is then covered by an oxidizing layer of mature compost.
    • It provides optimal conditions for methanotrophic (methane utilizing) bacteria to thrive and act as biofilters, hence control methane emissions by converting methane to CO2.
    • Potential applications: Road construction, land reclamation, etc.
    • Concerns: As they are found in old and deep dumpsites, they may be contaminated with heavy metals and microplastics.
    • Tags :
    • Methane Emission
    • Biocover
    • Solid Waste Management

    Cellulose Decomposition

    A study found that agriculture and urbanization are accelerating the decomposition of plant litter in rivers and streams. 

    • Plant litter are primarily cellulose. 

    Cellulose

    • Cellulose is a polymeric polysaccharide made of glucose and is the primary structural component of plant cell walls
    • It is the most abundant 
      • extracellular structural polysaccharide 
      • biomolecule in the biosphere.

    Cellulose decomposition

    • Cellulase enzymes hydrolyze cellulose into glucose, a sugar that can be fermented to ethanol or could also undergo cellular respiration to yield CO2 and water.
    • Thus, cattle and termites can digest cellulose as their gut harbours Cellulase-producing bacteria.
    • However, Cellulose cannot be digested by humans as their gut lacks cellulase enzyme 
    • Tags :
    • Cellulose Decomposition
    • Biomolecules
    • Cellulase

    RBI’s Gold Reserve

    In FY24, RBI moved 100 metric tonnes of gold from the U.K. to domestic vaults (at Mumbai and Nagpur). 

    • India's total gold holdings in FY24 reached 822 metric tonnes of which around 50% is stored locally. 
      • All banknotes issued by RBI are backed by assets such as gold, Government Securities and Foreign Currency Assets, as defined in Section 33 of the RBI Act, 1934. 
    • Storing gold abroad poses risks, especially during geopolitical tensions, as highlighted by the freezing of Russian assets by Western nations.
    • Tags :
    • RBI
    • Gold Reserve

    Far-side of the moon

    Chang'e-6 landing marks China's second descent on the far side of the moon

    • So far no other country has landed on that half of the moon. 
    • India’s Chandrayaan-3 mission landed on the South Pole of the Near Side of the Moon. 

    Far side of the Moon

    • It refers to the hemisphere of the Moon that always faces away from Earth (hence also referred to as the dark side of the Moon).  
      • This happens as the Moon is tidally locked with Earth due to gravitational pull.
    • Soviet Union's Luna 3 spacecraft took the first photo of this side of the Moon
    • It has a thicker crust, more craters, and fewer lava plains than near side.
    • Tags :
    • Chandrayaan-3
    • Chang'e-6
    • Lunar Far-side

    Sarus Crane

    Some experts have highlighted that agricultural biodiversity plays a crucial role in the conservation of Sarus Crane.

    • Agrobiodiversity refers to the variety and variability of living organisms that are associated with cultivating crops and rearing animals within ecological complexes.

    About Sarus Crane

    • It is the tallest flying bird in the world.
    • Distribution: Found in northern India, Southeast Asia, and northern Australia.
    • Habitat: Small seasonal marshes, floodplains, high-altitude wetlands, human-altered ponds, fallow and cultivated lands, and paddy fields.
    • Behavior: Social creature (found in pairs or small groups), mate for life with a single partner.
      • Its breeding season coincides with heavy rainfall in monsoon.
    • Conservation Status: 
      • IUCN:   Vulnerable
      • CITES:   Appendix II
      • Wildlife (Protection) Act, 1972: Schedule I
    • Tags :
    • Sarus Crane
    • Agrobiodiversity
    • Conservation of Species

    Multilateral Peace Operations

    SIPRI published a topical backgrounder titled ‘Multilateral peace operations in 2023: Developments and trends’ on important developments related to multilateral peace operations during 2023.

    Key Findings on Multilateral Peace Operations

    • The United Nations conducted the largest number of multilateral peace operations (20).
    • India was the highest contributor of military personnel for UN peacekeeping forces in 2023.
    • In 2023, 63 multilateral peace operations were active in 37 countries.
    • The largest deployment of peacekeeping forces was in Sub-Saharan Africa.
    • Tags :
    • UN Peacekeeping
    • Multilateral Peace Operations
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