Identification and biological characteristics of the pathogen causing anthracnose on Cinnamomum cassia in Yulin, Guangxi

doi:10.14088/j.cnki.issn0439-8114.2026.07.015

Abstract

Abstract: To clarify the pathogen species causing anthracnose on Cinnamomum cassia in Yulin, Guangxi, and its biological characteristics, the pathogen was isolated and purified from diseased leaves using the tissue isolation method. It was identified through pathogenicity testing, morphological observation, and concatenated phylogenetic analysis based on four gene fragments (ITS, ACT, GAPDH, and TUB2). The effects of carbon sources, nitrogen sources, temperature, light, and pH on mycelial growth were also investigated. The results showed that the pathogen causing anthracnose on Cinnamomum cassia in Yulin was Colletotrichum fructicola. This study reported for the first time that Colletotrichum fructicola infected Cinnamomum cassia. The optimal carbon source for mycelial growth was maltose, and the optimal nitrogen sources were ammonium dihydrogen phosphate and peptone. The optimal temperature for growth was 28 ℃, with the best growth observed under continuous light and at pH 6. The lethal condition for the mycelia was treatment at 52 ℃ for 15 min.

Key words: Cinnamomum cassia, anthracnose, Colletotrichum fructicola, identification, phylogenetic analysis, biological characteristics

CLC Number:

MENG Hai-qin, LU Chen-sheng, CHEN Xing-wen, QIN Hao-min, HUANG Guang-lan, YAN Rong-bin, WU Jun. Identification and biological characteristics of the pathogen causing anthracnose on Cinnamomum cassia in Yulin, Guangxi[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(7): 97-104.

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