导致泰国主要热带水果作物的叶斑病。

Causing Leaf Spot Disease in Key Tropical Fruit Crops in Thailand.

作者信息

Haituk Sukanya, Karunarathna Anuruddha, Wongwan Thitima, Promthep Tipprapa, Sittihan Sirikanlaya, Ariyawansa Hiran A, Nakashima Chiharu, Cheewangkoon Ratchadawan

机构信息

Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.

Office of the Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand.

出版信息

Plants (Basel). 2024 Nov 30;13(23):3379. doi: 10.3390/plants13233379.

DOI:10.3390/plants13233379

PMID:39683171

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11644073/

Abstract

Fruit crops have a pivotal role in Thailand's economy. Continuous evaluation of 13 potential and emerging diseases in fruit crops is important. Necrotic and discolored leaf spots were observed in (avocado) and (mango). The isolated fungi from the leaf spot were identified through multi-loci phylogenetic analyses using a concatenated matrix of ITS, LSU, , and . The fungal isolates from were identified as , and isolates from were identified as . The pathogenicity assays confirmed that causes leaf spots of , while causes leaf blotch of The pathogenicity of and has been reported in China and Taiwan. Hence, this study provides a report of the novel geographical distribution of and . Moreover, the cross-inoculation tests of and on and were conducted, respectively. Both pathogens showed host specificity, as suggested by the phylogenetic relationship and the host plants. In addition, disease control with carbendazim, trifloxystrobin, mancozeb, and prochloraz was assayed. All fungicides equally inhibited the mycelial growth of both pathogens.

摘要

水果作物在泰国经济中起着关键作用。持续评估水果作物中13种潜在和新出现的病害很重要。在鳄梨和芒果中观察到坏死和变色的叶斑。通过使用ITS、LSU、和的串联矩阵进行多位点系统发育分析，鉴定了从叶斑分离出的真菌。从鳄梨分离出的真菌被鉴定为，从芒果分离出的真菌被鉴定为。致病性测定证实导致鳄梨叶斑，而导致芒果叶枯病。和的致病性在中国和台湾已有报道。因此，本研究提供了和新的地理分布报告。此外，分别对和在鳄梨和芒果上进行了交叉接种试验。正如系统发育关系和寄主植物所表明的那样，两种病原体都表现出寄主特异性。此外，还测定了多菌灵、肟菌酯、代森锰锌和咪鲜胺的病害防治效果。所有杀菌剂均同等程度地抑制了两种病原体的菌丝生长。