TY - EJOU
AU - Mubeen, Mustansar
AU - Iftikhar, Yasir
AU - Abbas, Aqleem
AU - Abbas, Mazhar
AU - Zafar-ul-Hye, Muhammad
AU - Sajid, Ashara
AU - Bakhtawar, Faheema
TI - Yellow Vein Mosaic Disease in Okra (Abelmoschus esculentus L.): An Overview on Causal Agent, Vector and Management
T2 - Phyton-International Journal of Experimental Botany
PY - 2021
VL - 90
IS - 6
SN - 1851-5657
AB - Okra (Abelmoschus esculentus L.) belongs to the Malvaceae family and is one of the most essential and popular
vegetables globally. It is rich in proteins, carbohydrates, and vitamins. Abiotic and biotic factors threaten okra
productivity. Okra yellow vein mosaic disease (OYVMD) is the most destructive disease of okra. The causal agent,
[(i.e., Okra yellow vein mosaic virus (OYVMV)] of this disease belongs to the family Geminiviridae and genus
Begomovirus. OYVMV is a monopartite with additional ssDNA molecule. This virus has two components
DNA-A for protein coding and DNA-B for symptoms induction. Whitefly transmits OYVMV in persistent manner. Characteristic symptoms of OYVMV infected okra plants are chlorosis, dwarfing, and yellowing of veins and
fruits. High temperatures with moderate rainfall enhance the development of OYVMV disease and the whitefly
population. However, high humidity with low temperature and rainfall has no significant role in developing the
OYVMD and whitefly population. Moreover, the virus also affects the secondary metabolites in the infected okra
plants. The virus can be managed through various strategies including the application of plant defense activators,
the development of resistant varieties and by controlling its vector via pesticides and plant extracts. Various plant
defense activators such as monopotassium phosphate (KH2PO), salicylic acid, benzoic acid, and citric acid
enhance resistance in okra against OYMVD. In addition, the resistance to OYMVD can also be achieved by successfully incorporating high yielding but resistant cultivars of acceptable quality. In this review, we have discussed
history, economic impact, symptomology, disease development under a natural environment, genetics and management of OYVMV.
KW - Okra; OYVMV; symptoms; vectors; epidemiological factors; management
DO - 10.32604/phyton.2021.016664