Four New Pale-Spored Species of Xylaria (Xylariaceae, Xylariales) with a Key to Worldwide Species on Fallen Fruits and Seeds.
Four New Pale-Spored Species of Xylaria (Xylariaceae, Xylariales) with a Key to Worldwide Species on Fallen Fruits and Seeds.
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作者：
Xylaria 是子囊菌门中一个大型、复杂和世界性的属，被认为是具有抗菌、抗氧化、抗癌和其他特性的生物活性次级代谢产物的来源。该属的物种通常生长在腐烂的木材、掉落的果实或种子、落叶或叶柄以及白蚁巢上。本文根据在中国西南部采集的标本，利用形态学和多基因系统发育分析描述了与水果和种子相关的木霉属物种。中国关于木霉属分类学的详细报道很少，特别是与落果和种子相关的物种。在这项研究中，我们描述了来自 Xylaria 属的四种新物种，其掉落的果实上有浅色子囊孢子。对它们进行了描述、说明，并与形态相似的物种进行了比较，并获得并分析了它们的 ITS、RPB2 和 β-微管蛋白的核苷酸序列。我们的研究首次报告了中国落下的果实和种子相关的浅色子囊孢子木霉新种。 Xylaria 是子囊菌门中的一个大的、世界性的属，作为木材分解者在森林生态学中发挥着重要的生态作用，并且是生物活性次生代谢产物的来源。目前的工作涉及对中国西南地区木霉属的调查。基于形态学和系统发育证据，描述和说明了四种木霉新种，其具有与掉落的果实和种子相关的浅色子囊孢子。从 ITS-RPB2-β-微管蛋白序列的组合数据集推断出的系统发育支持这四个物种是不同的物种。将四个新分类单元，即 Xylaria rogersii、X. schimicola、X. theaceicola 和 X. wallichii 与形态相似的物种进行比较和对比。给出了与落下的果实和种子相关的所有公认的 Xylaria 物种的二分鉴定关键。
Xylaria, a large, complex, and cosmopolitan genus of Ascomycota, are known as a source of bioactive secondary metabolites with antibacterial, antioxidative, anti-carcinogenic, and other properties. The species of this genus usually grow on decayed wood, fallen fruits or seeds, fallen leaves or petioles, and termite nests. The present paper describes species of Xylaria associated with fruits and seeds using morphological and multigene phylogenetic analyses based on specimens collected in Southwest China. There are few detailed reports on Xylaria taxonomy from China, especially on the species associated with fallen fruits and seeds. In this study, we describe four new species from the genus Xylaria with pale-colored ascospores on fallen fruits. They are described, illustrated, and compared with morphologically similar species, and their nucleotide sequences of ITS, RPB2, and β-tubulin were obtained and analysed. Our study reports new species of Xylaria with pale-colored ascospores associated with fallen fruits and seeds in China for the first time. Xylaria, a large and cosmopolitan genus of Ascomycota, plays an important ecological role in forest ecology as wood-decomposers, and serve as a source of bioactive secondary metabolites. The present work concerns a survey of Xylaria from Southwest China. Four new species of Xylaria with pale-colored ascospores associated with fallen fruits and seeds are described and illustrated based on morphological and phylogenetic evidences. The phylogeny inferred from a combined dataset of ITS-RPB2-β-tubulin sequences supports these four species as distinct species. The four new taxa, namely Xylaria rogersii, X. schimicola, X. theaceicola, and X. wallichii, are compared and contrasted against morphologically similar species. A dichotomous identification key to all the accepted species of Xylaria associated with fallen fruits and seeds is given.
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影响因子：
2.8
作者：
Ju, YM;Rogers, JD;Vasilyeva, L
通讯作者：
Vasilyeva, L
基于形态和分子特征的中国两种 Penzigiooid Xylaria 物种描述
影响因子：
1.1
作者：
Ma, Hai-Xia;Qu, Zhi;Li, Yu
通讯作者：
Li, Yu
影响因子：
3.3
作者：
Pan XY;Song ZK;Qu Z;Liu TD;Ma HX
通讯作者：
Ma HX
DOI：
10.13346/j.mycosystema.210036
发表时间：
2021-01-01
期刊：
Mycosystema
影响因子：
--
作者：
Dai, Yu-Cheng;Yang, Zhu-Liang;Si, Jing
通讯作者：
Si, Jing
影响因子：
1.8
作者：
Fan, Nai-Wen;Chang, Hsun-Shuo;Chen, Ih-Sheng
通讯作者：
Chen, Ih-Sheng