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Occurrence and diversity of Phytophthora species in declining broadleaf forests in western Ukraine
Forest Pathology ( IF 1.4 ) Pub Date : 2020-12-10 , DOI: 10.1111/efp.12662
Iryna Matsiakh 1, 2 , Volodymyr Kramarets 1 , Michelle Cleary 2
Affiliation  

In western Ukraine, forest decline and dieback of several broadleaved tree species have become increasingly evident during recent years, and surveys in some areas have shown symptoms indicative of Phytophthora infections. In this study, we aimed to determine the occurrence and diversity of Phytophthora species associated with several broadleaved tree species (Alnus glutinosa, Betula pendula, Castanea sativa, Fagus sylvatica and Quercus robur) from forest stands where dieback has been observed. Rhizosphere soil samples were collected from 14 forest stands during 2017 and 2018 and tested for the presence of Phytophthora species using morphological and molecular methods. Seven Phytophthora species (P. bilorbang, P. cactorum, P. gallica, P. gonapodyides, P. lacustris, P. plurivora and P. polonica), and two other clade six taxa were detected from the various forest types, several of which are probable agents responsible for decline. Four of the Phytophthora species (P. bilorbang, P. gallica, P. plurivora and P. polonica) have previously never been reported from broadleaf forests in Ukraine.

中文翻译:

乌克兰西部衰退的阔叶林中疫霉菌的发生和多样性

在乌克兰西部,近年来森林砍伐和几种阔叶树种的枯萎越来越明显,并且在一些地区进行的调查显示出表明疫霉菌感染的症状。在这项研究中,我们旨在确定与观察到枯死的林分中几种阔叶树种(Al木桦木,阔叶青冈)相关的疫霉菌的发生和多样性。在2017年和2018年期间,从14个林分中收集了根际土壤样品,并检测了疫霉菌的存在物种使用形态学和分子方法。从各种森林类型中检出了七个疫霉属物种(P. bilorbang,P。cactorum,P。gallica,P。gonapodyides,P。lacustris,P。plurivora和P. polonica),以及另外两个进化枝六个分类单元。是造成下降的可能原因。以前从未在乌克兰的阔叶林中报告过疫霉属的四个物种(P. bilorbang,P。gallica,P。plurivora和P. polonica)。
更新日期:2020-12-10
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