Fungal pathogens of Proteaceae.
Fungal pathogens of Proteaceae.
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DOI：
10.3767/003158511x606239
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发表时间：
2011-12
期刊：
影响因子：
9.1
通讯作者：
Groenewald JZ
中科院分区：
文献类型：
--
作者：
Crous PW;Summerell BA;Swart L;Denman S;Taylor JE;Bezuidenhout CM;Palm ME;Marincowitz S;Groenewald JZ
Leucadendron，Leucospermum和Protea（Proteaceae）因其鲜艳的花朵或苞片而在国际花卉市场上需求量很大。然而，真菌病原体在培养完美的花朵方面造成了严重的问题。本研究的目的是利用形态学、培养特性和rRNA-ITS和LSU基因的DNA序列数据对这些病原体进行鉴定。在某些情况下，还对其他基因如TEF 1-α和CHS进行了测序。根据本研究结果，描述了几个新的种和属。Brunneosphaerella叶枯病是由三个种引起的，即B。jonkershoekensis，匍匐Protea，B. nitidae sp. nov.寄生在Protea nitida和B. Protearum对Protea spp.（南非）。与盾壳霉叶斑病相关的盾壳霉样种被分配到其他属，即在Protea grandiceps上的Curreya grandelis和在P. nitida（南非）上的Microsphaeropsis proteae。在Leucospermum sp.（澳大利亚）上描述了Leucospermi，在Protea sp.（新西兰）上新报道了Diplodina microsperma。核腔菌疫病是由一个新种--白籽核腔菌（Pyrenophora leucospermi）引起的，而不是由双隔膜德氏菌（Drechslera biseptata）或双隔膜德氏菌（D.如前所述，dermatoidea。在Protea sp.（南非）、Leucospermum cuneiforme（津巴布韦）上发现变形拟盘多毛孢（Pestalotiopsis protearum）、柱隔孢（Ramularia vizarium）和柱隔孢（R.星蕨对Protea spp.（南非），以及在Protea spp.上的Capensis畸形球腔菌（Teratosphaeria capensis）。（葡萄牙、南非）。Aureobasidium叶斑病是由两个种引起的，即A. Proteae comb. nov.（南非）和A. Leucospermi sp. nov.（印度尼西亚、葡萄牙、南非）。在这项研究中阐明的新属和新种包括Gordonomelamucovaginatus和Pseudopassalora gouriqua（丝孢菌纲），和Xenoconiothyrium catenata（腔肠菌纲），都在Protea spp。（南非）。
Species of Leucadendron, Leucospermum and Protea (Proteaceae) are in high demand for the international floriculture market due to their brightly coloured and textured flowers or bracts. Fungal pathogens, however, create a serious problem in cultivating flawless blooms. The aim of the present study was to characterise several of these pathogens using morphology, culture characteristics, and DNA sequence data of the rRNA-ITS and LSU genes. In some cases additional genes such as TEF 1-α and CHS were also sequenced. Based on the results of this study, several novel species and genera are described. Brunneosphaerella leaf blight is shown to be caused by three species, namely B. jonkershoekensis on Protea repens, B. nitidae sp. nov. on Protea nitida and B. protearum on a wide host range of Protea spp. (South Africa). Coniothyrium-like species associated with Coniothyrium leaf spot are allocated to other genera, namely Curreya grandicipis on Protea grandiceps, and Microsphaeropsis proteae on P. nitida (South Africa). Diaporthe leucospermi is described on Leucospermum sp. (Australia), and Diplodina microsperma newly reported on Protea sp. (New Zealand). Pyrenophora blight is caused by a novel species, Pyrenophora leucospermi, and not Drechslera biseptata or D. dematoidea as previously reported. Fusicladium proteae is described on Protea sp. (South Africa), Pestalotiopsis protearum on Leucospermum cuneiforme (Zimbabwe), Ramularia vizellae and R. stellenboschensis on Protea spp. (South Africa), and Teratosphaeria capensis on Protea spp. (Portugal, South Africa). Aureobasidium leaf spot is shown to be caused by two species, namely A. proteae comb. nov. on Protea spp. (South Africa), and A. leucospermi sp. nov. on Leucospermum spp. (Indonesia, Portugal, South Africa). Novel genera and species elucidated in this study include Gordonomyces mucovaginatus and Pseudopassalora gouriqua (hyphomycetes), and Xenoconiothyrium catenata (coelomycete), all on Protea spp. (South Africa).