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First Report of Green Mold Disease Caused by Trichoderma hengshanicum on Ganoderma lingzhi

Mycobiology 2020년 48권 5호 p.427 ~ 430
Cai Mingzhu, Idrees Muhmmad, Zhou Yi, Zhang Chunlan, Xu Jize,
소속 상세정보
 ( Cai Mingzhu ) - Jilin Agriculture Science and Technology University Agricultural College
 ( Idrees Muhmmad ) - Jilin Agricultural University College of Plant Protection Engineering Research Centre for Edible and Medicinal Mushrooms
 ( Zhou Yi ) - Jilin Agriculture Science and Technology University Agricultural College
 ( Zhang Chunlan ) - Changchun University College of Landscape Architecture
 ( Xu Jize ) - Jilin Agriculture Science and Technology University Agricultural College

Abstract


Ganoderma lingzhi is a well-known source of natural fungal medicines which has been given for the treatment of several diseases. China is one of the major commercial producers of Ganoderma mushroom worldwide. However, with the expansion of the commercial cultivation, the occurrence of the fungal diseases on G. lingzhi has also been increased. The green mold disease symptoms were observed in the cultivation base of G. lingzhi in Zuojia Town, Jilin City, Jilin Province, China, causing the basidiomes to be rotten and withered, and the green mycelium layer generated gradually. The pathogenicity tests showed the same symptoms as appeared naturally in Zuojia mushroom base. Morphology characters revealed conidia green, ellipsoid, globose, 2.56?4.83?×?2.09?4.22?μm, length-width ratio was 1.1?1.2 (n?=?10). Conidiophores trichoderma-like, often asymmetry, branches solitary, paired or in whorls of 3 phialides formed solitary, paired or in whorl, variable in shape, lageniform, sometimes ampulliform or subulate. While using molecular methodology, comparing with the sequences of Trichoderma hengshanicum from GenBank, the analyzed sequence showed 97.32% homology with the RPB2 sequences, 100% with the TEF1-α sequences. A fungus isolated from the diseased tissues was identified based on morphology and molecular studies as T. hengshanicum. This is the first report of T. hengshanicum causing the green mold disease of G. lingzhi in China.

키워드

Ganoderma lingzhi; green mold disease; Trichoderma hengshanicum; morphology; phylogeny; pathogenicity

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