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Home Agriculture

Fungi associated with basal stem rot found

January 26, 2022
in Agriculture
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Fungi associated with basal stem rot found
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In news-Recently, researchers from Kerala have identified two new species of fungi from the genus Ganoderma – Ganoderma keralense and G. pseudo applanatum, that are associated with coconut stem rot.

About Basal stem rot disease & recent discoveries-

  • Basal rot, also called bulb rot, is a widespread plant disease caused by a variety of fungi and bacteria that can infect all flower and crop bulbs.
  • Basal stem rot of coconut is known by several names in different parts of India: Ganoderma wilt (Andhra Pradesh), Anabe Roga (Karnataka) and Thanjavur wilt (Tamil Nadu), to mention a few.
  • The infection begins at the roots, but symptoms include discolouration and rotting of stem and leaves. 
  • In the later stages, flowering and nut set decreases and finally the coconut palm (Cocos nucifera) dies.
  • A reddish brown oozing has been reported only in India. 
  • Once infected, recovery of the plants is not likely.  
  • Another sign of infection is presence of shelf-like “basidiomata,” which are the fruiting or reproductive structures of the fungus, on the tree trunks. 
  • The basidiomata bear spores which are dispersed through wind and sometimes with the help of insects and this is how the pathogen spreads from one host to the other.
  • Since the fungus is microscopic, it is only detected after the symptoms start manifesting or when the reproductive structures are borne, which can be too late.
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Source: The Hindu
Tags: News PaperPrelims

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