Genetic distinctions among the Mediterranean and Chinese populations of Bemisia tabaci Q biotype and their endosymbiont Wolbachia populations

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

Abstract

The sweetpotato whitefly, Bemisia tabaci, is a cryptic species complex composed of more than 24 different biotypes around the world. The Q biotype of B. tabaci, which is thought to have originated in the Mediterranean Basin, is now a widespread and serious agricultural pest. In this study, the genetic differences among Q biotype populations from Mediterranean countries and China were investigated. Based on their mt COI gene sequences, the Q biotype populations could be divided into two groups, which were labelled as MedBasin 1 and MedBasin 2. MedBasin 1 is indigenous to the western Mediterranean area while MedBasin 2 is indigenous to the eastern Mediterranean area. Genetic variation was greater in the MedBasin 1 populations than in the MedBasin 2 populations. Unlike the introductions into the USA, which involved both Medbasin1 and MedBasin2 populations, all B. tabaci Q biotype populations in China belonged to MedBasin 1. Wolbachia detection in eight representative Q biotype populations from China, Egypt and Syria indicated that all of the populations were infested with Wolbachia, and the infection rate of the Chinese populations (42.5%) were not significantly different from that of Egypt and Syria (51.4%). Phylogenetic analysis indicated that the evolution of the Wolbachia populations was not closely linked with the evolution of their B. tabaci hosts.

Keywords: Bemisia tabaci; China; Mediterranean; Wolbachia; biotype Q; genetic differentiation

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1439-0418.2009.01442.x

Affiliations: 1:  Department of Entomology, South China Agricultural University, Guangzhou, China 2:  Horticultural Research Laboratory, Fort Pierce, FL, USA 3:  Department of Plant Protection, Suez Canal University, Ismailia, Egypt

Publication date: December 1, 2009

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more