The Heterogeneity of Ornamental Plants in Nurseries Increases the Chance of Finding New Hosts for Phytophthora.

IF 4.2 2区 生物学 Q2 MICROBIOLOGY
Alejandro Soto-Plancarte, Marlene Díaz-Celaya, Gerardo Rodríguez-Alvarado, Yolanda Leticia Fernández-Pavía, Hilda Victoria Silva-Rojas, Martha Elena Pedraza-Santos, Rafael Salgado-Garciglia, Tyler Baldwin Bourret, Sylvia Patricia Fernández-Pavía
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Abstract

The production of ornamental plants in Mexico represents a job-generating activity that has grown in recent years; however, it is adversely affected by phytosanitary issues, notably those induced by Phytophthora. Studies of Phytophthora in ornamental nurseries are scarce in Mexico. The aim in this study was to identify Phytophthora species from selected ornamental plant nurseries in Mexico as potential new hosts. Samples of 13 genera diseased plant tissue and soil were collected from eight nurseries in Mexico during 2009-2010. Based on morphology and sequences of ITS rDNA, the 19 isolates obtained were identified as P. cactorum, P. capsici, P. cinnamomi, P. drechsleri, P. kelmanii, P. nicotianae, and P. tropicalis. Additional loci were sequenced to support species determinations within the P. capsici species complex; some of these isolates could not be confirmed as belonging to any described species, and one appeared to be an interspecific hybrid. This is the first report of P. kelmanii in Mexico; this is noteworthy due to being a broad host range, similar to most of the other species encountered. Evidence of nursery-grown plants serving as a Phytophthora vector to a home garden has been reported for the first time in Mexico. Cestrum nocturnum and Solanum ovigerum are new hosts for Phytophthora worldwide.

苗圃中观赏植物的异质性增加了疫霉寻找新寄主的机会。
在墨西哥,观赏植物的生产代表了近年来不断增长的创造就业机会的活动;然而,它受到植物检疫问题的不利影响,特别是由疫霉引起的问题。在墨西哥观赏苗圃中对疫霉的研究很少。本研究的目的是在墨西哥选定的观赏植物苗圃中鉴定疫霉菌作为潜在的新寄主。2009-2010年在墨西哥8个苗圃采集了13个属的病害植物组织和土壤样本。根据ITS rDNA的形态和序列鉴定,19株分离菌株分别为辣椒假单胞菌(P. cactorum)、辣椒假单胞菌(P. capsici)、肉桂假单胞菌(P. cinnamomi)、drchsleri假单胞菌(P. kelmanii)、烟草假单胞菌(P. nicotianae)和热带假单胞菌(P. tropicalis)。对其他基因座进行了测序,以支持辣椒辣椒物种复合体内的物种测定;这些分离物中的一些不能被确认属于任何描述的物种,并且一个似乎是种间杂交。这是在墨西哥首次报道的P. kelmanii;这是值得注意的,因为它的宿主范围很广,与遇到的大多数其他物种相似。苗圃种植的植物作为疫霉载体到家庭花园的证据在墨西哥首次被报道。夜菇和卵菇是疫霉在世界范围内的新寄主。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Fungi
Journal of Fungi Medicine-Microbiology (medical)
CiteScore
6.70
自引率
14.90%
发文量
1151
审稿时长
11 weeks
期刊介绍: Journal of Fungi (ISSN 2309-608X) is an international, peer-reviewed scientific open access journal that provides an advanced forum for studies related to pathogenic fungi, fungal biology, and all other aspects of fungal research. The journal publishes reviews, regular research papers, and communications in quarterly issues. 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 paper length. Full experimental details must be provided so that the results can be reproduced.
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