Note: First report of the Q biotype ofBemisia tabaci in Southern Sonora, Mexico

Martínez-Carrillo, José Luis; Brown, Judith K.

doi:10.1007/bf02981162

Cited by 56 publications

(38 citation statements)

References 9 publications

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“…Our study provides the first data regarding the biotype/haplotype composition of the B. tabaci complex on cotton plants in Pakistan. Among the 12 genetic groups of B. tabaci in Boykin et al (2007), two widespread biotypes, B and Q, are distributed globally (Chu et al 2006;De Barro et al 2005;Martinez-Carrillo and Brown 2007). Results of this study, however, indicated that all the B. tabaci populations collected from cotton plants in Pakistan belong to an unresolved biotype of the Asia II genetic group described in Boykin et al (2007).…”

Section: Discussioncontrasting

confidence: 67%

Phylogenetic analysis of Bemisia tabaci (Hemiptera: Aleyrodidae) populations from cotton plants in Pakistan, China, and Egypt

et al. 2009

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Bemisia tabaci is a species complex, of which the B and Q biotypes are globally distributed. B. tabaci feeds on more than 600 plant species including cotton, which is one of the main crops in Pakistan. In this study, the biotypes/haplotypes of B. tabaci populations collected from cotton plants in Pakistan, China, and Egypt were identified, and their phylogenetic relationships were investigated. None of the populations from Pakistan or Egypt belonged to the B or Q biotype: all 16 samples from Pakistan belonged to haplotype ''PCG-1'' and it is a group of unresolved populations all from Pakistan, while all three populations from Egypt belonged to unresolved haplotype ''ECG.'' The three populations from China belonged to the B biotype. Phylogenetic analysis indicated that the PCG-1, ECG, and B biotypes clustered into different clades even though they share the same cotton plant species as their host. The association between the outbreaks of cotton leaf curl disease and the occurrence of the PCG haplotype of B. tabaci in Pakistan is discussed.

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Section: Discussioncontrasting

confidence: 67%

Phylogenetic analysis of Bemisia tabaci (Hemiptera: Aleyrodidae) populations from cotton plants in Pakistan, China, and Egypt

et al. 2009

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“…Biotype Q, recorded for the first time at the beginning of 1990s in Spain (Guirao et al 1997), has become a major pest in European Mediterranean regions, North Africa and Israel (Horowitz et al 2003;Simón et al 2007;Tsagkarakou et al 2007), and most recently, it has spread in the North and Central America, in East Asia and New Zealand (Chu et al 2007;Martinez-Carrillo and Brown 2007;Ueda et al 2009). Both biotypes, owing to their characteristics of strong polyphagy, high reproductive rate and high level of resistance to insecticides (Olivera et al 2001;Horowitz et al 2005;Roditakis et al 2005;Bonato et al 2007) represent a serious threat to cultivated plants in any area of invasion.…”

Section: Introductionmentioning

confidence: 99%

Evidence for a new genetic variant in the Bemisia tabaci species complex and the prevalence of the biotype Q in southern Italy

Parrella¹,

Scassillo²,

Giorgini³

2012

J Pest Sci

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The genetic diversity of Bemisia tabaci was investigated in Southern Italy using the mitochondrial cytochrome oxidase I (COI) gene as molecular marker and sampling whiteflies on cultivated plants, weeds and bushes. Phylogenetic analysis of COI sequences and restriction analysis of COI amplicons were used to genotype whitefly populations. A PCR-RFLP method based on digestion with the endonuclease ApoI was set up to identify the B. tabaci genetic variants so far recorded from the Mediterranean region. In general, biotype Q populations were most frequently collected (76.0% of all sampled populations). In greenhouse districts, 87.0% sampled populations were identified as biotype Q, and 13.0% were assigned to biotype B. Outside the greenhouse districts, the biotype B was never collected, whilst biotype Q populations were found on weeds and on plants cultivated in family gardens in different environments, also located in interior plains or in mountain areas distant from intensive cultivations of whitefly host plants. A new genetic variant unrelated to B and Q biotypes, which was named Ru, was collected on Rubus ulmifolius and grapevine. Phylogenetic analysis of COI sequences shown that Ru haplotypes form a wellsupported clade sister to the clade including the Asian/ Australian major genetic groups and the Italy major genetic group. The closest relative of the Ru clade (10.7% pairwise genetic distance) was the Italy group, with this latter so far including only the haplotypes of the T biotype. These results were discussed in the light of the recent B. tabaci species concept.

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“…Dinsdale et al (2010) suggested that B. tabaci is a cryptic species composed of at least 24 distinct species, often called biotypes. Among them, Mediterranean (hereafter referred to as biotype Q) and Middle East-Asia Minor 1 (hereafter referred to as biotype B) genetic groups have invaded many countries (Chu et al 2006, Ueda andMartinez-Carillo andBrown 2007, Bethke et al 2009). …”

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confidence: 98%

Influence of Plant Combinations on Population Characteristics of <I>Bemisia tabaci</I> Biotypes B and Q

2012

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In recent years, the dominant biotype of Bemisia tabaci (Gennadius) has shifted from biotype B to Q in many locations of China. Our field monitoring showed that B. tabaci biotype Q could be found on pepper Capsicum frutescens L. while biotype B could not be found on the plant. To study the role of the host plant in the displacement of biotype B by Q, the adult mortality, female fecundity, and adult emergence of both biotypes B and Q on different host combinations were studied using a model system involving pepper and eggplant. The results showed that pepper is not a preferred host for either biotype B or Q adults in comparison with eggplant. The negative impact of pepper to biotype B is, however, much greater than that to biotype Q. Because both the survival rates of the adult whitefly and the average number of emerged adults per female of biotype Q on pepper are higher than that of biotype B, biotype Q showed higher fitness in comparison with biotype B. Our results suggest that the existence and differential impact of a nonpreferred host might affect the population fitness and therefore could play a role in the displacement of biotype B in some regions.

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Note: First report of the Q biotype ofBemisia tabaci in Southern Sonora, Mexico

Cited by 56 publications

References 9 publications

Phylogenetic analysis of Bemisia tabaci (Hemiptera: Aleyrodidae) populations from cotton plants in Pakistan, China, and Egypt

Phylogenetic analysis of Bemisia tabaci (Hemiptera: Aleyrodidae) populations from cotton plants in Pakistan, China, and Egypt

Evidence for a new genetic variant in the Bemisia tabaci species complex and the prevalence of the biotype Q in southern Italy

Influence of Plant Combinations on Population Characteristics of <I>Bemisia tabaci</I> Biotypes B and Q

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