Morphology and phylogeny of Cytospora (Cytosporaceae, Diaporthales) species associated with plant cankers in Tibet, China

Jiangrong Li; Jieting Li; Ning Jiang

doi:10.3897/mycokeys.104.113567

Morphology and phylogeny of Cytospora (Cytosporaceae, Diaporthales) species associated with plant cankers in Tibet, China

MycoKeys. 2024 Apr 16:104:51-70. doi: 10.3897/mycokeys.104.113567. eCollection 2024.

Authors

Jiangrong Li^{1

2}, Jieting Li^{1

2}, Ning Jiang³

Affiliations

¹ Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education,Institute of Tibet Plateau Ecology, Tibet Agricultual & Animal Husbandry University, Nyingchi, Tibet 860000, China Tibet Agricultual & Animal Husbandry University Nyingchi China.
² National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China National Key Station of Field Scientific Observation & Experiment Nyingchi China.
³ Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry Beijing China.

Abstract

During our biodiversity investigations in Tibet, China, typical Cytospora canker symptoms were observed on branches of hosts Myricariapaniculate, Prunuscerasifera and Sibiraeaangustata. Samples were studied, based on morphological features coupled with multigene phylogenetic analyses of ITS, act, rpb2, tef1 and tub2 sequence data, which revealed two new species (Cytosporamyricicolasp. nov. and C.sibiraeicolasp. nov.) and a known species (C.populina). In addition, Cytosporapopulina is newly discovered on the host Prunuscerasifera and in Tibet.

Keywords: Ascomycota; Sordariomycetes; molecular phylogeny; novel taxa; taxonomy.

Jiangrong Li, Jieting Li, Ning Jiang.

Grants and funding

This research was funded by the Longterm Ecological Observation Study of Alpine Pine in Southeast Tibet (Science and Technology Innovation Base, XZ202301JD0001G), the flexible talent introduction projects of Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Tibet Agricultural and Animal Husbandry University (2022–2023), and the National Microbial Resource Center of the Ministry of Science and Technology of the People’s Republic of China (NMRC-2022-7).