Unraveling different begomoviruses, DNA satellites and cryptic species of Bemisia tabaci and their endosymbionts in vegetable ecosystem. (January 2023)

• Record Type: Journal Article
• Authors: Venkataravanappa, V.; Kodandaram, M.H.; Prasanna, H.C.; Reddy, M. Krishna; Reddy, C.N. Lakshminarayana
• Is Part Of: Microbial pathogenesis. Volume 174(2023)
• Publication Date: 2023-01
• Subjects: Begomoviruses -- Alphasatellite -- Betasatellite -- Bemisia tabaci cryptic Species endosymbionts -- Polymerase chain reaction -- Phylogeny; Pathogenic microorganisms -- Periodicals; Pathology, Molecular -- Periodicals; Communicable Diseases -- microbiology -- Periodicals; Communicable Diseases -- parasitology -- Periodicals; Micro-organismes pathogènes -- Périodiques; Pathologie moléculaire -- Périodiques; Electronic journals; 616.9041
• DOI: 10.1016/j.micpath.2022.105892
• Languages: English
• ISSNs: 0882-4010

Abstract

Abstract: Bemisia tabaci species complex contains more than 46 cryptic species. It has emerged as an important pest causing significant yield loss in many cultivated crops. This pest is also a vector for more than 100 species of begomoviruses, that are a major threat for the cultivation of many crops in different regions of the world. The relation between cryptic species of the B. tabaci species complex and associated begomoviruses that infect different crops remains unclear. In the present study, four cryptic species (Asia I, China 3, Asia II 5 and Asia II-1) of B. tabaci and four associated endosymbionts ( Arsenophonus, Cardinium, Rickettsia and Wolbachia ) were identified in different vegetable crops. The vector-based PCR detection revealed five different begomoviruses such as okra enation leaf curl virus (OELCuV), tomato leaf curl Palampur virus (ToLCPalV), squash leaf curl China virus (SLCCNV), chilli leaf curl virus (ChiLCuV), and tomato leaf curl New Delhi virus (ToLCNDV). Of these begomoviruses, the maximum infection rate was observed (9.1%) for OELCuV, followed by 7.3% for ToLCNDV. The infection rate of the other three viruses (SLCCNV, ChiLCuV, ToLCPalV) ranged from 0.9 to 2.7% in cryptic species of B. tabaci . Further, each cryptic species was infected with multiple virus species and the virus infection rate of Asia I, Asia II-5, China 3 and Asia II-1 was 21.2%, 15.1%, 15.1% and 0.6% respectively. Similarly, in case of betasatellites the highest infection rate was 12% for ToLCBDB, followed by 6% for OLCuB and PaLCB. With regard to alphasatellites, the highest infection rate was 18.2% for AEV and 3% for CLCuMuA. This study demonstrates the distribution of cryptic species of whitefly and their endosymbionts, and associated begomoviruses and DNA satellites in vegetable ecosystem. We believe that the information generated here is useful for evolving an effective pest management strategies for vegetable production. Highlights: Bemisia tabaci species complex consists of more than 44 cryptic species causes' significant yield loss in many cultivated crops. Four types whitefly genetic groups were identified (Asia I, China 3, Asia II 5 and Asia II-1) along with their secondary endosymbiont ( Arsenophonus, Cardinium Rickettsia and Wolbachia ) associated whitefly feeding on different Vegetable crops. Five different types of begomoviruses, four betasatellites and two alphasatellites were identified in whitefly genetic groups. Both mono and bipartite begomoviruses are associated with whitefly genetic groups. Five different types of begomviruses, four betasatellites and two alphasatellites were characterized from the whitefly genetic groups were closely related to already exisiting viruses in India.