What’s in my Pot? Six Colletotrichum Species Causing Anthracnose in Brazilian Pecan Orchards

Pecan ( Carya illinoinensis ) is one important exotic forest crop cultivated in South America, specifically in Brazil, Uruguay, and Argentina. However, diseases such as anthracnose, favored by high humidity conditions and high summer temperatures, make its cultivation difficult, causing important lo...

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Bibliographic Details
Published in:Current microbiology 2024-04, Vol.81 (4), p.94-94, Article 94
Main Authors: Poletto, Tales, Fritsche, Yohan, Fantinel, Vinícius Spolaor, Muniz, Marlove Fátima Brião, Harakava, Ricardo, Stefenon, Valdir Marcos
Format: Article
Language:English
Subjects:
Anthracnose
Biomedical and Life Sciences
Biotechnology
Carya illinoinensis
Colletotrichum
Cultivation
High temperature
Life Sciences
Microbiology
Morphology
Orchards
Physical characteristics
Signs and symptoms
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Summary:Pecan ( Carya illinoinensis ) is one important exotic forest crop cultivated in South America, specifically in Brazil, Uruguay, and Argentina. However, diseases such as anthracnose, favored by high humidity conditions and high summer temperatures, make its cultivation difficult, causing important loss to pecan farmers. This study used morphological and molecular approaches to identify the Colletotrichum species causing anthracnose in pecan plantations in Southern Brazil. The isolates obtained from pecan fruits with anthracnose symptoms were grouped through quantitative morphological characteristics into three distinct morphotypes. Molecular analysis of nuclear genes allowed the identification of six species of Colletotrichum causing anthracnose in pecan: C. nymphaeae , C. fioriniae , C. gloeosporioides , C. siamense , C. kahawae , and C. karsti . Three of these species are reported for the first time as causal agents of anthracnose in pecan. Therefore, these results provide an important basis for the adoption and/or development of anthracnose management strategies in pecan orchards cultivated in southern Brazil and neighboring countries.
ISSN:0343-8651
1432-0991
DOI:10.1007/s00284-024-03622-y