What effect pathogens have on plants?

Asked on 13.12.2018 in All Questions.
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Pathogens have significant effects on plant fitness and may regulate plant population and in turn lead to considerable economic damage. After successful penetration, pathogens may directly benefit from the active metabolism of their host to complete their life cycle by either keeping the host cells alive during colonization (biotrophic strategy) or induce host cell disintegration after infection (necrotrophic strategy). Some pathogenic fungus utilizes hemibiotrophic strategy whereby they undergo a biotrophic phase and later switch to a necrotrophic phase. Williamson posited that necrotrophic pathogens pose...
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