Phaeotubakia lithocarpicola gen. et sp. nov. (Tubakiaceae, Diaporthales) from leaf spots in China

By

Jiang, Ning
Zhu, Ya-Quan
Xue, Han
Piao, Chun-Gen
Li, Yong

Type

Article

Date of Publication

2023

Original Publication

Journal of Hymenoptera research

Volume

95

Pages

15--25

Subjects

Ascomycota , Morphology , new genus , Phylogeny , plant disease , taxonomy , Tubakiaceae

Contributed by

Pensoft Publishers

Language

English

Published by

Washington, D.C International Society of Hymenopterists

Identifiers

DOI: https://doi.org/10.3897/mycokeys.95.98384

 

Abstract

Tubakiaceae represents a distinct lineage of Diaporthales, including its type genus Tubakia and nine additional known genera. Tubakiaceous species are commonly known as endophytes in leaves and twigs of many tree species, but can also be plant pathogens causing conspicuous leaf symptoms. In the present study, isolates were obtained from diseased leaves of Lithocarpus glaber collected in Guangdong Province, China. The identification was conducted based on morphology and phylogeny of combined loci of 28S nrRNA gene (LSU), internal transcribed spacer regions and intervening 5.8S nrRNA gene (ITS) of the nrDNA operon, translation elongation factor 1-alpha (tef1) and beta tubulin (tub2). As a result, a distinct clade in Tubakiaceae was revealed named Phaeotubakia lithocarpicolagen. et sp. nov., which was distinguished from the other tubakiaceous taxa by its dark brown conidiogenous cells and conidia.