Pathogenic variations in Colletotrichum spp. causing chilli anthracnose in Peninsular Malaysia

IF 2.3 3区农林科学 Q1 AGRONOMY

Plant Pathology Pub Date : 2024-05-12 DOI:10.1111/ppa.13925

Nuraini Mohd Noor, Latiffah Zakaria

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引用次数: 0

Abstract

In Peninsular Malaysia, Colletotrichum fioriniae, Colletotrichum fructicola, Colletotrichum scovillei, Colletotrichum siamense and Colletotrichum truncatum are the causative pathogens of chilli anthracnose. In the present study, the pathogenic variability and virulence levels of these five Colletotrichum spp. were evaluated. Isolates of C. fioriniae, C. fructicola, C. scovillei, C. siamense and C. truncatum were tested for pathogenicity using red and green Capsicum annuum and red and green Capsicum frutescens. Pathogenicity tests were conducted using spore suspensions and mycelial plugs on wounded and nonwounded chilli fruits. All isolates tested on the wounded chilli fruits caused anthracnose symptoms with variable disease severity and virulence. In nonwounded chilli fruits, only isolates of C. scovillei (n = 7) and C. truncatum (n = 5) caused infection. C. fioriniae, C. fructicola, C. scovillei, C. siamense and C. truncatum showed variability in pathogenicity and virulence levels in red and green chilli fruits of Ca. annuum and Ca. frutescens. Pathogenicity tests on wounded and nonwounded chilli fruits can be used to identify pathotypes within anthracnose pathogen populations. This is important for strategizing the effective disease management of chilli anthracnose.

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马来西亚半岛引起辣椒炭疽病的 Colletotrichum spp.

在马来西亚半岛，Colletotrichum fioriniae、Colletotrichum fructicola、Colletotrichum scovillei、Colletotrichum siamense 和 Colletotrichum truncatum 是辣椒炭疽病的致病菌。本研究评估了这五种 Colletotrichum 的致病变异性和毒力水平。利用红辣椒和绿辣椒以及红辣椒和绿辣椒对 C. fioriniae、C. fructicola、C. scovillei、C. siamense 和 C. truncatum 的分离株进行了致病性测试。使用孢子悬浮液和菌丝塞对受伤和未受伤的辣椒果实进行了致病性测试。在受伤的辣椒果实上测试的所有分离物都会引起炭疽病症状，病害严重程度和致病力各不相同。在无伤口的辣椒果实中，只有 C. scovillei（n = 7）和 C. truncatum（n = 5）的分离物引起感染。C.fioriniae、C.fructicola、C.scovillei、C.siamense 和 C. truncatum 在红辣椒和绿辣椒果实（Ca. annuum 和 Ca. frutescens）中的致病性和毒力水平存在差异。对受伤和未受伤辣椒果实的致病性测试可用于确定炭疽病病原体种群的病原型。这对于制定有效的辣椒炭疽病病害管理战略非常重要。

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来源期刊

Plant Pathology 生物-农艺学

CiteScore

5.60

自引率

7.40%

发文量

147

审稿时长

3 months

期刊介绍： This international journal, owned and edited by the British Society for Plant Pathology, covers all aspects of plant pathology and reaches subscribers in 80 countries. Top quality original research papers and critical reviews from around the world cover: diseases of temperate and tropical plants caused by fungi, bacteria, viruses, phytoplasmas and nematodes; physiological, biochemical, molecular, ecological, genetic and economic aspects of plant pathology; disease epidemiology and modelling; disease appraisal and crop loss assessment; and plant disease control and disease-related crop management.