影响泰国番茄和马铃薯分离株中不同疫霉种群的可能原因

IF 2.1 3区 生物学 Q2 BIODIVERSITY CONSERVATION
Diversity-Basel Pub Date : 2023-10-30 DOI:10.3390/d15111121
Nattaya Srisawad, Kamonsiri Petchaboon, Supajit Sraphet, Piengtawan Tappiban, Kanokporn Triwitayakorn
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引用次数: 0

摘要

晚疫病是由卵霉菌疫霉(Phytophthora infestans)引起的,是影响番茄和马铃薯生产的主要病害之一。在泰国,该病在北部和东北部广泛传播,特别是在清迈省和德省。采用交配型、甲轴基敏感性、线粒体DNA (mtDNA)单倍型、RG57指纹图谱和微卫星等方法对病原菌群体进行了鉴定。该研究表明,泰国番茄分离的病原菌与1994年至2002年的病原菌具有相同的谱系。自1994年以来,在马铃薯群体中发现的无性系发生了变化。马铃薯种群中病原菌分离株的变化可能是泰国进口种子马铃薯的结果。此外,马铃薯中的病原菌种群对甲螨灵表现出抗性,而番茄分离株中的病原菌种群对杀菌剂表现出敏感性。产生不同反应的原因可归结为:(i)甲螨灵的使用,(ii)致病菌对寄主的偏好,以及(iii)受感染马铃薯种子中新基因型的迁移。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Possible Reasons Affecting Different Phytophthora infestans Populations in Tomato and Potato Isolates in Thailand
Late blight, caused by the oomycete Phytophthora infestans, is one of the most important diseases affecting tomato and potato production worldwide. In Thailand, the disease is widespread in the north and northeast, especially in the Chiang-Mai and Tak provinces. The mating type, metalaxyl sensitivity, mitochondrial DNA (mtDNA) haplotype, RG57 fingerprinting, and microsatellite were used to characterize the P. infestans populations. The study revealed that the P. infestans of tomato isolates in Thailand are of the same lineage as those from 1994 until 2002. The clonal lineages that were found in the potato populations have changed since 1994. The changes in P. infestans isolates in the potato populations have likely been the result of the import of seed potatoes to Thailand. Furthermore, the P. infestans populations in potatoes show resistance to metalaxyl, whereas those from tomato isolates show sensitivity to fungicides. The reasons for the different responses can be attributed to (i) the use of metalaxyl, (ii) the host preferences of P. infestans, and (iii) the migration of new genotypes from infected potato seeds.
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来源期刊
Diversity-Basel
Diversity-Basel Environmental Science-Ecological Modeling
CiteScore
3.40
自引率
12.50%
发文量
925
审稿时长
11 weeks
期刊介绍: Diversity (ISSN 1424-2818) is an international and interdisciplinary journal of science concerning diversity concept and application, diversity assessment and diversity preservation. It is focused on organismic and molecular diversity. It publishes reviews, regular research papers and short notes in the regular issues. Related news and announcements are also published. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. Full experimental details must be provided so that the results can be reproduced.
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