Plantation-grown Eucalyptus ( Myrtaceae ) and other trees residing in the Myrtales have been widely planted in southern China. These fungal pathogens include species of Cryphonectriaceae that are well-known to cause stem and branch canker disease on Myrtales trees. During recent disease surveys in southern China, sporocarps with typical characteristics of Cryphonectriaceae were observed on the surfaces of cankers on the stems and branches of Myrtales trees. In this study, a total of 164 Cryphonectriaceae isolates were identified based on comparisons of DNA sequences of the partial conserved nuclear large subunit (LSU) ribosomal DNA, internal transcribed spacer (ITS) regions including the 5.8S gene of the ribosomal DNA operon, two regions of the β-tubulin ( tub2 / tub1 ) gene, and the translation elongation factor1-alpha ( tef1 ) gene region, as well as their morphological characteristics. The results showed that eight species reside in four genera of Cryphonectriaceae occurring on the genera Eucalyptus , Melastoma ( Melastomataceae ), Psidium ( Myrtaceae ), Syzygium ( Myrtaceae ), and Terminalia ( Combretaceae ) in Myrtales . These fungal species include Chrysoporthe deuterocubensis , Celoporthe syzygii , Cel. eucalypti , Cel. guang-dongensis , Cel. cerciana , a new genus and two new species, as well as one new species of Aurifilum . These new taxa are hereby described as Parvosmorbus gen. nov., Par. eucalypti sp. nov., Par. guangdongensis sp. nov., and Aurifilum terminali sp. nov. Pathogenicity tests showed that the eight species of Cryphonectriaceae are pathogenic to two Eucalyptus hybrid seedlings, Melastoma sanguineum branches, and Psidium guajava and Syzygium jambos seedlings. Theoveralldatashowedthat Chr. deuterocubensis is the most aggressive, followed by Par. eucalypti . Significant differences in tolerance were observed between the two tested Eucalyptus hybrid genotypes, suggesting that disease-tolerant genotypes can be selected for disease management in the Eucalyptus industry.

W. Wang

G.Q. Li

Q.L. Liu

S.F. Chen

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

<i>Cryphonectriaceae</i> on <i>Myrtales</i> in China: phylogeny, host range, and pathogenicity

Pathogenicity tests showed that the eight species of Cryphonectriaceae are pathogenic to two Eucalyptus hybrid seedlings, Melastoma sanguineum branches, and Psidium guajava and Syzygium jambos seedlings; the overall data showed that Chr.

Category	Quartile
生物学	1
生物学, 真菌学	1

Cryphonectriaceae on Myrtales in China: phylogeny, host range, and pathogenicity

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