BANANA BUNCHY TOP DISEASE (BBTD) SYMPTOM EXPRESSION IN BANANA AND STRATEGIES FOR TRANSGENIC RESISTANCE: A REVIEW

Sivalingam Elayabalan; Sreeramanan Subramaniam; Ramasamy Selvarajan

doi:10.9755/ejfa.v27i1.19197

Authors

Sivalingam Elayabalan Department of Plant Molecular Biology and Biotechnology, Centre for Plant Molecular Biology, Tamil Nadu Agricultural University (TNAU), Coimbatore, 641003, Tamil Nadu, India
Sreeramanan Subramaniam School of Biological Sciences, Universiti Sains Malaysia (USM), Minden Heights, 11800, Georgetown, Penang, Malaysia
Ramasamy Selvarajan National Research Center for Banana (NRCB), Thayanur Post, Tiruchirapalli 620102, India

DOI:

https://doi.org/10.9755/ejfa.v27i1.19197

Keywords:

Banana bunchy top virus (BBTV), Banana bunchy top disease (BBTD), Single stranded DNA (ssDNA), Pathogen-derived resistance (PDR), Post transcriptional gene silencing (PTGS)

Abstract

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.