Bananas are one among the world’s leading food crops after rice, wheat and maize. Banana cultivation is affected by various diseases. Among them, in globally banana bunchy top disease (BBTD) caused by the banana bunchy top virus (BBTV) and Fusarium wilt caused by the Fusarium oxysporum f.sp. cubense are the most serious diseases. BBTV is an isometric virus with a circular single stranded DNA (ssDNA) genome consisting of at least six components, BBTV DNA-1 to 6. The virus is transmitted by the banana aphid (Pentalonia nigronervosa). In this review paper, we are discussing the global status of BBTD, symptom expression in both vegetative and reproductive stage, resistant strategy and recent BBTV resistant banana clones development.
Key words: Banana bunchy top virus (BBTV), Banana bunchy top disease (BBTD), Single stranded DNA (ssDNA), Pathogen-derived resistance (PDR), Post transcriptional gene silencing (PTGS)
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