What question did this study set out to answer?

To identify the causal agent of anthracnose symptoms observed on Magnolia liliiflora in China.

March 16, 2026

First Report of Colletotrichum gloeosporioides Causing Anthracnose on Magnolia liliiflora in China

HPHaoqin PanWeifang University of Science and Technology WQWenxin QiShanghai University YMYingxin MaWenzhou Municipal Sci-Tech Bureau

Key Points

To identify the causal agent of anthracnose symptoms observed on Magnolia liliiflora in China.
Observed anthracnose-like symptoms on Magnolia liliiflora leaves.
Conducted morphological and molecular identification of the pathogen.
Used internal transcribed spacer (ITS), actin (ACT), calmodulin (CAL), chitin synthase (CHS), and β-tubulin (TUB2) gene regions for identification.
Confirmed pathogenicity via Koch's postulates.
Identified Colletotrichum gloeosporioides as the pathogen causing anthracnose.
Observed initial symptoms as small brown spots expanding to grey necrotic areas with dark-brown margins.
Established that this is the first report of C. gloeosporioides on M. liliiflora in China.

Abstract

ABSTRACT In October 2024, an anthracnose‐like symptom was observed on leaves of Magnolia liliiflora in Shandong Province, China. The disease symptoms initially appeared as small brown spots, which then expanded into irregular grey necrotic areas with dark‐brown margins. Based on the morphological characteristics and molecular identification using the internal transcribed spacer (ITS), actin ( ACT ), calmodulin ( CAL ), chitin synthase ( CHS ), and β‐tubulin ( TUB2 ) gene regions, as well as confirmation of pathogenesis following Koch's postulates, the causal agent was identified as Colletotrichum gloeosporioides . To our knowledge, this is the first report of C. gloeosporioides causing anthracnose on M. liliiflora in China.

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Cite This Study

Pan et al. (Sun,) studied this question.

synapsesocial.com/papers/69b79e968166e15b153ac257 https://doi.org/https://doi.org/10.1111/jph.70281

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