Japanese scientists from the University of Tokyo have “retrained” a pathogenic strain of the fungus Colletotrichum tofieldiae (Ct) that suppresses the growth of plants. With the help of special processing, the microorganism of a dangerous parasite became useful for crops. To work published in the scientific journal Nature Communications.
Colletotrichum tofieldiae, or brown mold, affects the roots of plants, inhibiting their development. Experts have found that a particular set of genes is responsible for this function. When destroyed by genetic means or by changing environmental conditions, the fungus changed its behavior and began to compensate for the phosphorus deficiency by stimulating the development of the host plant.
“Plant-associated fungi exhibit lifestyles ranging from mutual (beneficial) to pathogenic (harmful) depending on the environment. However, the mechanisms by which these microbes switch between behaviors are still poorly understood,” said study co-author Kei Hiruma.
The experiment showed that the same microorganisms can affect plants both negatively and beneficially. This came as a surprise, as pathogens and mutualists were previously thought to have different traits.
The results of the study may contribute to the development of methods that will save food, reduce food waste and neutralize harmful fungi.
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