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Morphological and phylogenetic analyzes reveal two new species of Melanconiella from Fujian Province, China

文献类型： 外文期刊

作者： Mu, Taichang 1 ; Chen, Jinhui 1 ; Zhao, Zhiying 1 ; Zhang, Weibin 1 ; Stephenson, Steven L. 2 ; Yang, Chenjie 1 ; Zhu, Mengjia 1 ; Su, Hailan 3 ; Liu, Pu 4 ; Guan, Xiayu 5 ; Qiu, Junzhi 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Life Sci, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Key Lab Biopesticide & Chem Biol,Minist Educ, Fuzhou, Fujian, Peoples R China

2.Univ Arkansas, Dept Biol Sci, Fayetteville, AR USA

3.Fujian Acad Agr Sci, Agr Bioresources Inst, Fuzhou, Fujian, Peoples R China

4.Jilin Agr Univ, Engn Res Ctr Edible & Med Fungi, Minist Educ, Changchun, Peoples R China

5.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou, Fujian, Peoples R China

关键词： leaf disease; Melanconiellaceae; multi-gene phylogeny; new species; taxonomy

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

ISSN：

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： Introduction: Species of Melanconiella include a diverse array of plant pathogens as well as endophytic fungi. Members of this genus have been frequently collected from the family Betulaceae (birches) in Europe and North America. Little, however, if known concerning the distribution of Melanconiella and/or their potential as pathogens of other plant hosts. Methods: Fungi were noted and isolated from diseased leaves of Loropetalum chinense (Chinese fringe flower) and Camellia sinensis (tea) in Fujian Province, China. Genomic DNA was extracted from fungal isolates and the nucleotide sequences of four loci were determined and sued to construct phylogenetic trees. Morphological characteristics of fungal structures were determined via microscopic analyses. Results: Four strains and two new species of Melanconiella were isolated from infected leaves of L. chinense and C. sinensis in Fujian Province, China. Based on morphology and a multi-gene phylogeny of the internal transcribed spacer regions with the intervening 5.8S nrRNA gene (ITS), the 28S large subunit of nuclear ribosomal RNA (LSU), the second largest subunit of RNA polymerase II (RPB2), and the translation elongation factor 1-alpha gene (TEF1-alpha), Melanconiella loropetali sp. nov. and Melanconiella camelliae sp. nov. were identified and described herein. Detailed descriptions, illustrations, and a key to the known species of Melanconiella are provided. Discussion: These data identify new species of Melanconiella, expanding the potential range and distribution of these dark septate fungi. The developed keys provide a reference source for further characterization of these fungi.

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