Molecular Characterization of Fusarium oxysporum G30 Isolated from Vegetable Wastes in Imphal, Northeast India
Keywords:complex; decomposition; frequency of occurrence; Fusarium oxysporum species complex; microbial growth; new strain; vegetable waste management
A new strain of Fusarium oxysporum (Schl.) emend. Synder & Hansen, viz. Fusarium oxysporum G30, is reported from seven different decomposing vegetable wastes and a mixture of the same in equal proportions, in Imphal, Northeast India. This strain was isolated by surface sterilization technique, followed by re-culturing till pure culture was obtained. The pure culture was characterised morphologically based on the colony features: colour, texture, colony diameter; conidial features: macro and microconidial shape, size, septation, presence of chlamydospores and foot-shaped basal cells. The strain was also identified at molecular level by partial sequencing using universal primers, ITS4 and ITS5. The ITS data reveals that isolated culture (F. oxysporum G30) match the existing isolates in Gen Bank (Gen Bank accession No. GQ497156.1) by 99% and it has got a code segment particular to this strain. This strain showed ubiquitous nature with mean percent frequency of occurrence ranging from 39.5 to 68% at various stages of decomposition of the selected vegetable wastes.
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