Species in Diaporthe have broad host ranges and cosmopolitan geographic distributions, occurring as endophytes, saprobes and plantpathogens. Previous studies have indicated that many Diaporthe species are associated with Citrus . To further determine the diversity of Diaporthe species associated with citrus diseases in China, we conducted extensive surveys in major citrus-producing are as from 2017–2020. Diseased tissues we recollected from leaves, fruits, twigs, branches and trunks showing a range of symptoms including melanose, dieback, gummosis, wood decay and canker. Based on phylogenetic comparisons of DNA sequences of the internal transcribed spacer regions(ITS), calmodulin( cal ), histoneH3( his3 ), translation elongation factor1-alpha ( tef1 ) and beta-tubulin ( tub2 ), 393 isolates from 10 provinces were identified as belonging to 36 species of Diaporthe , including 32 known species, namely D. apiculata , D. biconispora , D. biguttulata , D. caryae , D. citri , D. citriasiana , D. compacta , D. discoidispora , D. endophytica , D. eres , D. fusicola , D. fulvicolor , D. guangxiensis , D. hongkongensis , D. hubeiensis , D. limonicola , D. litchii , D. novem , D. passifloricola , D. penetriteum , D. pescicola , D. pometiae , D. sackstonii , D. sennicola , D. sojae , D. spinosa , D. subclavata , D. tectonae , D. tibetensis , D. unshiuensis , D. velutina and D. xishuangbanica , and four new species, namely D. gammata , D. jishouensis , D. ruiliensis and D. sexualispora . Among the 32 known species, 14 are reported for the first time on Citrus , and two are newly reported from China. Among the 36 species, D. citri was the dominant species as exemplified by its high frequency of isolationand virulence. Pathogenicity tests indicated that most Diaporthe species obtained in this study were weakly aggressive or non-pathogenic to the tested citrus varieties. Only D. citri produced the longest lesion lengths on citrus shoots and induced melanose on citrus leaves. These results further demonstrated that a rich diversity of Diaporthe species occupy Citrus , but only a few species are harmful and D. citri is the main pathogen for Citrus in China. The present study provides a basis from which targeted monitoring, prevention and control measures can be developed.

X.E. Xiao

Y.D. Liu

F. Zheng

T. Xiong

Y.T. Zeng

W. Wang

X.L. Zheng

Q. Wu

J.P. Xu

P.W. Crous

C. Jiao

H.Y. Li

Persoonia - Molecular Phylogeny and Evolution of Fungi

Persoonia aims to publish papers dealing with molecular systematics and evolution of fungi. A further aim is to promote fungal taxonomy by employing a polythetic approach to clarify the true phylogeny and relationships within the kingdom Fungi. The journal publishes high-quality papers elucidating known and novel fungal taxa at the DNA level, and also strives to present novel insights into evolutionary processes and relationships. Papers to be considered include research articles, topical and book reviews.

Persoonia: Molecular Phylogeny and Evolution of Fungi aims to publish papers related to the molecular systematics and evolution of fungi. Another goal of the journal is to promote fungal taxonomy by employing a polythetic approach to clarify the true phylogeny and relationships within the kingdom Fungi. The journal publishes high-quality papers elucidating both known and novel fungal taxa at the DNA level, and also strives to present new insights into evolutionary processes and relationships. Papers considered for publication include research articles, topical reviews, and book reviews.

《Persoonia: Molecular Phylogeny and Evolution of Fungi》旨在发表与真菌的分子系统学和进化相关的论文。期刊的另一个目标是通过采用多元方法促进真菌分类学，以澄清真菌界内的真实系统发育和关系。该期刊发表高质量的论文，阐明已知和新发现的真菌分类群的DNA水平，并努力呈现对进化过程和关系的新见解。考虑发表的论文包括研究文章、专题和书评。

Persoonia: Molecular Phylogeny and Evolution of Fungi

High species diversity in <i>Diaporthe</i> associated with citrus diseases in China

中国柑橘病害相关<i>Diaporthe</i>的高物种多样性

Category	Quartile
生物学	1
生物学, 真菌学	1

High species diversity in Diaporthe associated with citrus diseases in China

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