First report of gray mold of chickpea caused by Botrytis euroamericana in the USA. (November 2020)

• Record Type: Journal Article
• Authors: Moparthi, Swarnalatha; Peluola, Cecilia; Agindotan, Bright; McPhee, Kevin; Burrows, Mary
• Is Part Of: Crop protection. Volume 137(2020)
• Publication Date: 2020-11
• Subjects: B. euroamericana -- Gray mold -- Cicer arietinum -- Phylogeny -- Pathogenicity tests; Plants, Protection of -- Periodicals; 632.05
• DOI: 10.1016/j.cropro.2020.105297
• Languages: English
• ISSNs: 0261-2194

Abstract

Abstract: Gray mold caused by Botrytis spp. is one of the most important diseases of chickpea. In August 2019, chickpea plants with gray mold symptoms were submitted to the Regional Pulse Crop Diagnostic Laboratory (RPCDL) at Montana State University (MSU). To identify the causal agent, leaves were surface sterilized and plated on potato dextrose agar (PDA). The fungus was off white color and did not sporulate on PDA; sclerotia were observed after 10 days of incubation. The pathogen was identified as Botrytis euroamericana by the amplification of part of the G3PDH, HSP60, and RPB2 genes and by phylogenetic analysis. Pathogenicity tests revealed that the isolate was able to cause lesions on chickpea, lentil, dry pea, and fava bean foliage. Highlights: An isolate of B. euroamericana was recovered from a symptomatic chickpea plant. The identity was confirmed by amplifying part of the G3PDH, HSP60, and RPB2 genes. B. euroamericana isolate caused lesions on pulse crops without wounding. This is the first report of B. euroamericana on chickpea in the USA.