First report of anthracnose caused by Colletotrichum karsti in lentil (Lablab purpureus). (May 2022)

• Record Type: Journal Article
• Authors: Luo, Mingyan; Jiang, Yulan
• Is Part Of: Crop protection. Volume 155(2022)
• Publication Date: 2022-05
• Subjects: Lentil -- Anthracnose -- Colletotrichum karsti; Plants, Protection of -- Periodicals; 632.05
• DOI: 10.1016/j.cropro.2021.105903
• Languages: English
• ISSNs: 0261-2194

Abstract

Abstract: Lentil ( Lablab purpureus ) is cultivated worldwide for its high nutritional value and ability to grow in relatively poor conditions. Anthracnose, a disease caused by Colletotrichum spp. that cause leaf lesions and impair growth, is common in legumes including lentils. In August 2020 in Guizhou Province, southwest China, anthracnose symptoms were observed on lentil plants growing in an agricultural field. Based on morphological characters and phylogenetic analyses of the combined sequences of internal transcribed spacer region (ITS), chitin synthase 1 ( CHS-1 ), glyceraldehyde-3-phosphate dehydrogenase ( GAPDH ), β-tubulin ( tub2 ) and actin ( ACT ), the isolated fungus of the disease was identified as Colletotrichum karsti. Koch's postulates were confirmed by a pathogenicity test and pathogen re-isolation and identification. To the best of our knowledge, this is the first ever report of anthracnose in lentil plants caused by C. karsti in the world. Highlights: Lentil: a new host of Colletotrichum karstii in China. An anthracnose was observed on lentil ( Lablab purpureus ). The first report of C. karstii as causal agent of anthracnose on lentil.