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.
Highlights
Banana production and export worldwide is affected by many viral diseases such as banana bunchy top disease (BBTD) which caused by banana bunchy top virus (BBTV) (Dale, 1987)
Due to the high destructive potential of the disease, the Invasive Species Specialist Group (ISSG) of the International Union for the Conservation of Nature (IUCN) listed BBTV as one of the World's 100 Worst Invasive Alien Species (Lowe et al, 2000) The objectives of this review is to study the BBTV geographic distribution, symptoms expression from juvenile stage to reproduction stage of banana, transmission, host range, genome organization and other nanoviral diseases
BBTV problems point to the necessity of developing alternate strategies for banana improvement
Summary
Banana is the most popular commercial fruit crop grown all over the world and serves as a staple food in many countries (FAO, 2012). BBTV is one of the most serious diseases of banana in Asia, Australia and the South Pacific. 1.5 Host range Alternative hosts for BBTV have been investigated since the aphid vector colonies numerous plant families including Araceae, Commelinaceae, Musaceae and Zingiberaceae (Blackman and Eastop, 1984). Other host such as Canna indica (Canna; Cannaceae) and Hedychium coronarium (white ginger or garland flower; Zingiberaceae) were reported to be the host for BBTV in Taiwan (Geering and Thomas, 1997; Yasmin et al, 2001). Vietnam Australia Fiji Hawaii Guam Samoa American Samoa Tonga Tuvalu Kiribati Central, North and South America and the Caribbean
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