The Bemisia tabaci species complex: Additions from different parts of the world

Abstract

Bemisia tabaci is one of the most threatening pests in many crops. We sequenced part of the mitochondrial cytochrome oxidase I gene from fifty whitefly populations collected in Indonesia, Thailand, India and China. Nineteen unique sequences (haplotypes) of the cytochrome oxidase I were identified in these populations. They were combined with sequences available in databases, resulting in a total of 407 haplotypes and analyzed together with nine outgroup accessions. A phylogenetic tree was calculated using the maximum likelihood method. The tree showed that all groups that were found in previous studies were also present in our study. Additionally, seven new groups were identified based on the new haplotypes. Most B. tabaci haplotypes grouped based on their geographical origin. Two groups were found to have a worldwide distribution. Our results indicate that our knowledge on the species complex around B. tabaci is still far from complete.

Developing conversed microsatellite markers and their implications in evolutionary analysis of the Bemisia tabaci complex

“…Due to the lack of morphological characteristics, the systematics of B. tabaci species complex depends largely on molecular approaches2346. To date, the evolutionary history of B. tabaci complex was inferred exclusively from the partial sequence of COI gene2650.…”

“…The whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidea) is a species complex containing at least 34 cryptic species1234. The species complex colonizes more than 600 different species of plants and causes significant damage through transmitting plant viruses and feeding on plant phloem sap3.…”

Specific Cells in the Primary Salivary Glands of the Whitefly Bemisia tabaci Control Retention and Transmission of Begomoviruses

“…However, Tomato yellow leaf curl China virus (TYLCCNV), which is closely related to TYLCV, is restricted to southern China and infects tomato and tobacco plants (27,28). Both TYLCV and TYLCCNV are exclusively transmitted by the whitefly B. tabaci, which is now recognized as a complex containing at least 35 cryptic species (29,30). During the past 20 years, two species of the B. tabaci complex, Middle East Asia Minor 1 (MEAM1) and Mediterranean (MED), which have commonly been referred to as biotype B and biotype Q, respectively, have invaded many countries worldwide and have coexisted in sympatry at various localities (31).…”

First report of the Sub-Saharan Africa 2 species of the Bemisia tabaci complex in the Southern France

“…The use of molecular markers in the B. tabaci complex is a crucial step because a huge genetic diversity is hidden behind the morphological similarity among its members Firdaus et al 2013;Wang et al 2014). For the purpose of routine identification and monitoring of distribution and spread of species over a large area, the RFLP (restriction fragment length polymorphism) method has proven to be the most practical approach with DNA seq u e n c i n g a n d / o r g e n o t y p i n g i n v o l v i n g microsatellite markers used to identify subspecies and infer the genetic structure of the populations.…”