Brazil: New guarana tree fungus may affect other plants of economic importance

Published 2022년 5월 9일

Tridge summary

A new fungus, named Pseudopestalotiopsis gilvanii, has been discovered to affect guarana plants, causing leaf disease. The fungus was identified through field observations, isolations, and laboratory analyses by Embrapa Amazônia Ocidental's Laboratory of Molecular Biology. It belongs to the pestalotiopsis group, which causes diseases in various hosts. The fungus was also found to affect açaí palms and oil palm but did not affect banana. This discovery highlights the need for monitoring and further research into this new pathogen.

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Original content

Photo: Ronaldo Rosa Photo: Ronaldo Rosa The fungus was observed in guarana tree clones, indicating that the new pathogen needs to be monitored so that it does not become a problem for the crop in the future A new species of fungus found on guarana plants, with symptoms characterized as leaf spots similar to anthracnose, is capable of causing leaf disease in açaí and palm trees. The discovery was made in research based on field observation, isolation of the fungus and laboratory analyzes with morphological and molecular characterization, carried out by the Laboratory of Molecular Biology of Embrapa Amazônia Ocidental (AM). The new species belongs to the group of fungi called pestalotiopsis, which encompasses three genera (Pestalotiopsis, Pseudopestalotiopsis and Neopestalotiopsis) and causes diseases in a wide range of hosts. In guarana, species belonging to two of the three genera that include pestalothioids were identified. Of the six strains analyzed, three were identified as ...

Source: Abrafrutas