title: First evidence of ethylene production by Fusarium mangiferae associated with mango malformation.
abstract: Malformation is arguably the most crucial disease of mango (Mangifera indica L.) at present. It is receiving great attention not only because of its widespread and destructive nature but also because of its etiology and control is not absolutely understood. Recently, Fusarium mangiferae is found to be associated with mango malformation disease. There are indications that stress ethylene production could be involved in the disease. Here we have shown the first direct evidence of production of ethylene in pure culture of F. mangiferae obtained from mango. The study also revealed that all the isolates dissected from mango acquire morphological features of F. mangiferae showing most similarity to the features of species with accepted standard features. The isolates of F. mangiferae from mango were observed to produce ethylene in significant amounts, ranging from 9.28-13.66 n mol/g dry wt/day. The findings presented here suggest that F. mangiferae could contribute to the malformation of mango by producing ethylene and probably stimulating stress ethylene production in malformed tissue of mango. Ethylene might be produced through 2-oxoglutarate-dependent oxygenase-type ethylene-forming-enzyme (EFE) pathway in Fusarium sp, which needs to be investigated.
authors.affiliation: Department of Plant Physiology; College of Basic Sciences and Humanities; G. B. Pant University of Agriculture and Technology; Uttarakhand, India; Plant Molecular Biology Group; International Centre for Genetic Engineering and Biotechnology; New Delhi, India.
authors.forename: Mohammad Wahid
authors.initials: MW
authors.lastname: Ansari
authors.affiliation: Department of Plant Physiology; College of Basic Sciences and Humanities; G. B. Pant University of Agriculture and Technology; Uttarakhand, India.
authors.forename: Alok
authors.initials: A
authors.lastname: Shukla
authors.affiliation: Department of Plant Physiology; College of Basic Sciences and Humanities; G. B. Pant University of Agriculture and Technology; Uttarakhand, India.
authors.forename: Ramesh Chandra
authors.initials: RC
authors.lastname: Pant
authors.affiliation: Plant Molecular Biology Group; International Centre for Genetic Engineering and Biotechnology; New Delhi, India.
authors.forename: Narendra
authors.initials: N
authors.lastname: Tuteja
mesh_terms: D005030:Ethylenes / Q000096:biosynthesis*; D005638:Fruit; D005670:Fusarium / Q000378:metabolism*; D031022:Mangifera / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology*
chemical_list: D005030:Ethylenes; C036216:ethylene