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首页> 外文期刊>Mycologia >DNA phylogeny, morphology and pathogenicity of Botryosphaeria species on grapevines
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DNA phylogeny, morphology and pathogenicity of Botryosphaeria species on grapevines

机译：葡萄中灰葡萄菌的DNA系统发生，形态和致病性

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Several species of Botryosphaeria are known to occur on grapevines, causing a wide range of disorders including bud mortality, dieback, brown wood streaking and bunch rot. In this study the 11 Botryosphaeria spp. associated with grapevines growing in various parts of the world, but primarily in South Africa, are distinguished based on morphology, DNA sequences (ITS-1, 5.8S, ITS-2 and EF1-alpha) and pathological data. Botryosphaeria australis, B. lutea, B. obtusa, B. Parva, B. rhodina and a Diplodia sp. are confirmed from grapevines in South Africa, while Diplodia porosum, Fusicoccum viticlavatum and F vitifusiforme are described as new. Although isolates of B. dothidea and B. stevensii are confirmed from grapevines in Portugal, neither of these species occurred in South Africa, nor were any isolates of B. ribis confirmed from grapevines. All grapevine isolates from Portugal, formerly presumed to be B. ribis, are identified as B. parva based on their EFI-alpha sequence data. From artificial inoculations on grapevine shoots, we conclude that B. australis, B. parva, B. ribis and B. stevensii are more virulent than the other species studied. The Diplodia sp. collected from grapevine canes is morphologically similar but phylogenetically distinct from D. sarmentorum. Diplodia sarmentorum is confirmed as anamorph of Otthia spiraeae, the type species of the genus Otthia (Botryosphaeriaceae). A culture identified as O. spiraeae clustered within Botryosphaeria and thus is regarded as probable synonym. These findings confirm earlier suggestions that the generic concept of Botryosphaeria should be expanded to include genera with septate ascospores and Diplodia anamorphs.
机译：已知葡萄树上会出现几种葡萄孢菌，引起多种疾病，包括芽死亡率，枯死率，棕色木纹和串腐病。在本研究中，11种葡萄孢属。根据形态，DNA序列（ITS-1、5.8S，ITS-2和EF1-alpha）和病理数据，区分与在世界各地（但主要在南非）生长的葡萄藤相关的基因。南方孢杆菌，黄褐芽孢杆菌，钝角芽孢杆菌，Parva芽孢杆菌，红景天芽孢杆菌和Diplodia sp。从南非的葡萄藤中确认得到，而Diplodia porosum，Fusicoccum viticlavatum和F vitifusiforme被认为是新的。尽管在葡萄牙证实从葡萄藤中分离到B. dothidea和B. stevensii，但这些物种均未在南非发生，也未从葡萄藤中鉴定到任何B. ribis分离株。来自葡萄牙的所有葡萄分离株，以前被认为是核糖双歧杆菌，根据其EFI-alpha序列数据被鉴定为小白僵菌。通过对葡萄枝进行人工接种，我们得出结论，澳大利亚南方芽孢杆菌，小芽孢杆菌，肋骨芽孢杆菌和stevensii芽孢杆菌比其他研究物种更具毒性。文凭sp。从葡萄藤茎收集的菌在形态上与D. sarmentorum相似，但在系统发育上却不同。 Diplodia sarmentorum被确认为Otthia spiraeae的变形体，Otthia spiraeae（Botryosphaeriaceae）的典型物种。一种被鉴定为螺旋藻的文化聚集在灰霉病菌中，因此被认为是可能的同义词。这些发现证实了较早提出的建议，即应扩大灰霉病的通用概念，以包括具有隔生孢子孢子和无性双胞胎的属。

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