|Table of Contents|

Fungicides Identification and Control Agent Screening of a Novel Pathogen Causing Strawberry Anthracnose

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年15
Page:
105-114
Research Field:
Publishing date:

Info

Title:
Fungicides Identification and Control Agent Screening of a Novel Pathogen Causing Strawberry Anthracnose
Author(s):
LENG Yunxing1; LI Kaijing2; LI Xue2; YIN Xianhui2
(1.Guizhou Fruit and Vegetable Workstation,Guiyang,Guizhou 550006;2.Institute of Crop Protection,Guizhou University,Guiyang,Guizhou 550025)
Keywords:
strawberry anthracnose; Colletotrichum karstii; virulence assay; biological control
PACS:
S668.4
DOI:
10.11937/bfyy.20260437
Abstract:
Taking typical strawberry anthracnose samples collected from Guiyang area as test materials,the pathogenic species and its biological characteristics were investigated through tissue isolation,morphological observation,multi-gene phylogenetic analysis and Koch′s postulates verification.The mycelial growth rate method was employed to evaluate the in vitro inhibitory activities of nine botanical active compounds and their combinations against the pathogen,in order to provide references for the green prevention and control of strawberry anthracnose.The results showed that the pathogen causing strawberry anthracnose in Guiyang was identified as Colletotrichum karstii.The in vitro toxicity tests revealed that magnolol and osthole exhibited the strongest antifungal activities,with EC50 values of 9.581 9 mg·L-1 and 13.136 2 mg·L-1,respectively.A mixture of magnolol and osthole at a mass ratio of 9∶1 demonstrated significant synergistic effect,with a co-toxicity coefficient of 192.54.In conclusion Colletotrichum karstii was confirmed as a novel pathogen of strawberry anthracnose in China and a highly synergistic mixture of honokiol and osthole (9∶1) was identified.These findings provide etiological evidence and practical fungicide strategies for the green control of this disease.

References:

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Last Update: 2026-08-14