Mycobiology.
2018 Jun;46(2):172-176. 10.1080/12298093.2018.1468054.
Alternaria brassicifolii sp. nov. Isolated from Brassica rapa subsp. pekinensis in Korea
- Affiliations
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- 1Department of Plant Protection, College of Agriculture, Yangtze University, Jingzhou, China.
- 2Institute of Special Wild Economic Animals and Plants, Chinese Academy of Agriculture Sciences, Changchun, China.
- 3Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, Korea. sangkeun@cnu.ac.kr
- 4Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration, Muan, Korea.
- 5Division of Applied Bioscience & Biotechnology, College of Agriculture & Life Sciences, Chonnam National University, Gwangju, Korea.
- KMID: 2428817
- DOI: http://doi.org/10.1080/12298093.2018.1468054
Abstract
- A new species belonging to the genus Alternaria was isolated from the necrotic leaf spots of Brassica rapa subsp. pekinensis in Yuseong district, Daejeon, Korea. It is an occasional isolate, not an etiological agent, which is morphologically similar to A. broccoli-italicae, but differs in conidial size and conidiophore shape. Phylogenetic analysis using the sequence datasets of the internal transcribed spacer (ITS) region of the rDNA, glyceraldehyde-3-phosphate dehydrogenase (gpd), and plasma membrane ATPase genes showed that it is distantly related to A. broccoli-italicae and closely related to Alternaria species in the section Pseudoalternaria, which belonged to a clade basal to the section Infectoriae. Morphologically, the species is unique because it produces solitary conidia or conidial chains (two units), unlike the four members in the section Pseudoalternaria that produce conidia as short branched chains. It exhibits weak pathogenicity in the host plant. This report includes the description and illustration of A. brassicifolii as a new species.
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