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Colletotrichum Species Associated with Anthracnose in Salix babylonica in China.

ABSTRACT: Salix babylonica L. is a popular ornamental tree species in China and widely cultivated in Asia, Europe, and North America. Anthracnose in S. babylonica poses a serious threat to its growth and reduces its medicinal properties. In 2021, a total of 55 Colletotrichum isolates were isolated from symptomatic leaves in three provinces in China. Phylogenetic analyses using six loci (ITS, ACT, CHS-1, TUB2, CAL, and GAPDH) and a morphological characterization of the 55 isolates showed that they belonged to four species of Colletotrichum, including C. aenigma, C. fructicola, C. gloeosporioides s.s., and C. siamense. Among them, C. siamense was the dominant species, and C. gloeosporioides s.s. was occasionally discovered from the host tissues. Pathogenicity tests revealed that all the isolates of the aforementioned species were pathogenic to the host, and there were significant differences in pathogenicity or virulence among these isolates. The information on the diversity of Colletotrichum spp. that causes S. babylonica anthracnose in China is new.

SUBMITTER: Zhang M 

PROVIDER: S-EPMC10145283 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature

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<i>Colletotrichum</i> Species Associated with Anthracnose in <i>Salix babylonica</i> in China.

Zhang Mengyu M   Li Dewei D   Si Yuanzhi Y   Ju Yue Y   Zhu Lihua L  

Plants (Basel, Switzerland) 20230417 8

<i>Salix babylonica</i> L. is a popular ornamental tree species in China and widely cultivated in Asia, Europe, and North America. Anthracnose in <i>S. babylonica</i> poses a serious threat to its growth and reduces its medicinal properties. In 2021, a total of 55 <i>Colletotrichum</i> isolates were isolated from symptomatic leaves in three provinces in China. Phylogenetic analyses using six loci (ITS, <i>ACT</i>, <i>CHS-1</i>, <i>TUB2</i>, <i>CAL</i>, and <i>GAPDH</i>) and a morphological chara  ...[more]

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