Families and genera of diaporthalean fungi associated with canker and dieback of tree hosts.

IF 9.5 1区 生物学 Q1 MYCOLOGY
Persoonia Pub Date : 2018-12-01 Epub Date: 2018-02-06 DOI:10.3767/persoonia.2018.40.05
X L Fan, J D P Bezerra, C M Tian, P W Crous
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引用次数: 56

Abstract

In this study we accept 25 families in Diaporthales based on phylogenetic analyses using partial ITS, LSU, rpb2 and tef1-α gene sequences. Four different families associated with canker and dieback of tree hosts are morphologically treated and phylogenetically compared. These include three new families (Diaporthostomataceae, Pseudomelanconidaceae, Synnemasporellaceae), and one new genus, Dendrostoma (Erythrogloeaceae). Dendrostoma is newly described from Malus spectabilis, Osmanthus fragrans and Quercus acutissima having fusoid to cylindrical, bicellular ascospores, with three new species namely D. mali, D. osmanthi and D. quercinum. Diaporthostomataceae is characterised by conical and discrete perithecia with bicellular, fusoid ascospores on branches of Machilus leptophylla. Pseudomelanconidaceae is defined by conidiogenous cells with apical collarets and discreet annellations, and the inconspicuous hyaline conidial sheath when mature on Carya cathayensis, compared to morphologically similar families Melanconidaceae and Juglanconidaceae. Synnemasporellaceae is proposed to accommodate fungi with synnematous conidiomata, with descriptions of S. toxicodendri on Toxicodendron sylvestre and S. aculeans on Rhus copallina.

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与树宿主的溃疡病和枯死有关的继发真菌科和属。
本研究采用ITS、LSU、rpb2和tef1-α部分基因序列进行系统发育分析。对与树宿主溃疡病和枯死病相关的四个不同家族进行了形态学处理和系统发育比较。其中包括3个新科(Diaporthostomataceae, Pseudomelanconidaceae, Synnemasporellaceae)和1个新属(Dendrostoma, Erythrogloeaceae)。树孢子是在苹果、桂花和麻栎中发现的一种具有梭状至柱状双细胞子囊孢子的新物种,其中有3个新种,即马利、桂花和槲皮。斜口科的特征是圆锥形和离散的周皮,双细胞的,柔丝样子囊孢子在细枝上。与形态相似的黑孢孢子科和胡桃孢子科相比,假黑孢孢子科的定义是在山核桃上成熟的分生细胞具有顶端的苞片和不明显的环状花序,成熟时有不明显的透明分生孢子鞘。提出了联系性分生菌科,以适应具有联系性分生菌的真菌,并描述了毒蕈(S. toxicodendri)在毒蕈(Toxicodendron sylvestre)上的分布,以及毒蕈(S. acules)在Rhus copallina上的分布。
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来源期刊
Persoonia
Persoonia MYCOLOGY-
CiteScore
17.70
自引率
5.50%
发文量
10
审稿时长
3 months
期刊介绍: Persoonia aspires to publish papers focusing on the molecular systematics and evolution of fungi. Additionally, it seeks to advance fungal taxonomy by employing a polythetic approach to elucidate the genuine phylogeny and relationships within the kingdom Fungi. The journal is dedicated to disseminating high-quality papers that unravel both known and novel fungal taxa at the DNA level. Moreover, it endeavors to provide fresh insights into evolutionary processes and relationships. The scope of papers considered encompasses research articles, along with topical and book reviews.
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