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Identification of Lasiodiplodia pseudotheobromae Causing Fruit Rot of Citrus in China

Authors :
Jianghua Chen
Zihang Zhu
Yanping Fu
Jiasen Cheng
Jiatao Xie
Yang Lin
Source :
Plants, Vol 10, Iss 2, p 202 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

Considering the huge economic loss caused by postharvest diseases, the identification and prevention of citrus postharvest diseases is vital to the citrus industry. In 2018, 16 decayed citrus fruit from four citrus varieties—Satsuma mandarin (Citrus unshiu), Ponkan (Citrus reticulata Blanco cv. Ponkan), Nanfeng mandarin (Citrus reticulata cv. nanfengmiju), and Sugar orange (Citrus reticulata Blanco)—showing soft rot and sogginess on their surfaces and covered with white mycelia were collected from storage rooms in seven provinces. The pathogens were isolated and the pathogenicity of the isolates was tested. The fungal strains were identified as Lasiodiplodia pseudotheobromae based on their morphological characteristics and phylogenetic analyses using the internal transcribed spacer regions (ITS), translation elongation factor 1-α gene (TEF), and beta-tubulin (TUB) gene sequences. The strains could infect wounded citrus fruit and cause decay within two days post inoculation, but could not infect unwounded fruit. To our knowledge, this is the first report of citrus fruit decay caused by L. pseudotheobromae in China.

Details

Language :
English
ISSN :
22237747
Volume :
10
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Plants
Publication Type :
Academic Journal
Accession number :
edsdoj.ffa64c967aae44c083dd1909e46ecc6e
Document Type :
article
Full Text :
https://doi.org/10.3390/plants10020202