Abstract
The objective of this study was to identify fungi and bacteria associated with the post-harvest rot of ginger rhizomes (Zingiber officinale Roscoe) in the Serrana region of Espirito Santo, Brazil. Rhizomes with symptoms of rot were sampled in the packing-house and in the field soon after harvest. In the packing-house, we report positive pathogenicity tests for Acremonium murorum, Acrostalagmus luteo-albus, Fusarium sp., Fusarium oxysporum, Lasiodiplodia theobromae and Sclerotium rolfsii. For the rhizomes sampled during harvest, the mean incidence of pathogens was as follows: F. oxysporum, 74%; Fusarium sp., 31%; Fusarium solani, 21%; Nigrospora oryzae, 5%; Fusarium semitectum and Nigrospora sphaerica, 6%; Alternaria tenuissima, 4%; Penicillium commune, Verticillium sp.(1) and Verticillium sp.(2), 3%; A. luteo-albus, Aspergillus niger, Chaetomium sp. and Epicoccum sp., 2%; and Curvularia geniculata and Mucor hiemalis, 1%. The mean incidence of bacteria that cause soft rot was as follows: Enterobacter cloacae subsp. cloacae, 4%; and Pseudomonas fluorescens, 1%. The presence of Enterobacter cloacae subsp. cloacae indicated probable fecal contamination. This is the first record of ginger rhizome rot caused by P. fluorescens in the world and the first from A. murorum, A. luteo-albus, L. theobromae and E. cloacae subsp. cloacae causing ginger rhizome rot in Brazil.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.