Host‐associated biotypes within West African populations of the whitefly Bemisia tabaci (Genn.), (Hom., Aleyrodidae)

Burban, Christian; Fishpool, Lincoln; Fauquet, Claude; Fargette, Denis; Thouvenel, Jean-Claude

doi:10.1111/j.1439-0418.1992.tb00682.x

Cited by 118 publications

(136 citation statements)

References 11 publications

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“…Burban et al [104] first showed host-associated differences among populations of B. tabaci from cassava and okra and other host plants in Côte d'Ivoire, based on isozyme electrophoresis and experimental host range studies. This report was corroborated by the presence of cassava and non-cassava haplotypes based on RAPD-PCR markers and the internal transcribed spacer-1 (ITS-1) [105].…”

Section: Whitefly B Tabaci Vector: Biological and Genetic Variabilitymentioning

confidence: 99%

Begomovirus disease complex: emerging threat to vegetable production systems of West and Central Africa

et al. 2015

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Vegetables play a major role in the livelihoods of the rural poor in Africa. Among major constraints to vegetable production worldwide are diseases caused by a group of viruses belonging to the genus Begomovirus, family Geminiviridae. Begomoviruses are plant-infecting viruses, which are transmitted by the whitefly vector Bemisia tabaci and have been known to cause extreme yield reduction in a number of economically important vegetables around the world. Several begomoviruses have been detected infecting vegetable crops in West and Central Africa (WCA). Small single stranded circular molecules, alphasatellites and betasatellites, which are about half the size of their helper begomovirus genome, have also been detected in plants infected by begomoviruses. In WCA, B. tabaci has been associated with suspected begomovirus infections in many vegetable crops and weed species. Sequencing of viral genomes from crops such as okra resulted in the identification of two previously known begomovirus species (Cotton leaf curl Gezira virus and Okra yellow crinkle virus) as well as a new recombinant begomovirus species (Okra leaf curl Cameroon virus), a betasatellite (Cotton leaf curl Gezira betasatellite) and new alphasatellites. Tomato and pepper plants with leaf curling were shown to contain isolates of new begomoviruses, collectively referred to as West African tomato-infecting begomoviruses (WATIBs), new alphasatellites and betasatellites. To study the potential of weeds serving as begomovirus reservoirs, begomoviruses and satellites in the weed Ageratum conyzoides were characterized. Sequence analyses showed that they were infected by isolates of a new begomovirus (Ageratum leaf curl Cameroon virus) that belong to the WATIBs group, a new betasatellite (Ageratum leaf curl Cameroon betasatellite), an alphasatellite and two types of defective recombinants between a begomovirus and an alphasatellite. Putative recombinations were detected in begomovirus genomes for all four plant species studied, indicating that recombination is an important mechanism for their evolution. A close relationship between the begomoviruses infecting pepper and tomato and A. conyzoides and the detection of the same alphasatellite in them support the idea that weeds are important reservoirs for begomoviruses and their satellites. With this high diversity, recombination potential and transmission by B. tabaci, begomoviruses and ssDNA satellites pose a serious threat to crop production in West and Central Africa.

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Section: Whitefly B Tabaci Vector: Biological and Genetic Variabilitymentioning

confidence: 99%

Begomovirus disease complex: emerging threat to vegetable production systems of West and Central Africa

et al. 2015

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“…담배가루이(Bemisia tabaci)는 전 세계적으로 발생하며, 600여종 이상의 기주를 가해하는 주요 흡즙성 해충으로 (Perring, 2001), 기주 선호성이나 매개하는 바이러스 등 에 따라 24종의 생태형이 보고되어 있다 (Bedford et al, 1994;Burban et al, 1992). 담배가루이는 식물의 체관부 를 흡즙하여 직접적인 피해를 주거나 간접적으로 감로배설 로 인한 그을음병을 유발하고 100종 이상의 바이러스를 매 개하는 등 시설재배 작물의 상품성과 수량에 영향을 준다 (Byrne, 1999;Bedford et al, 1994;Jones, 2003) (Choi, 1990;Devine and Denholm, 1998;Nauen et al, 2002).…”

Section: 서 론unclassified

Gene expression in plant according to RNAi treatment of the tobacco whitefly

Kim¹,

Seo²,

Kim³

et al. 2015

CNU Journal of Agricultural Science

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:Three genes selected from cDNA library of tobacco whitefly, Bemisia tabaci, were checked whether these genes expressed in plant or not, and confirmed the change of gene expression using qRT-PCR in the tobacco whitefly. First of all, three genes were inserted in Tobacco rattle virus (TRV) RNA2 vector using Sac I and Xho I restriction enzymes, and conducted agro-infiltration in tobacco plants (Nicotiana benthamianana). And then, it was confirmed that TRV RNA2 vector and genes inserted in TRV RNA2 vector were expressed in plant. So, after feeding the tobacco whitefly the plants inoculated the genes and induced RNAi of the genes, we plan to confirm the RNAi in the whitefly and investigate the changes of gene expression through the qRT-PCR.

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“…It was primarily divided in to B biotype, Q biotype and non B/Q biotype. The non B/Q biotypes includes more than 20 biotypes such as A, K, D, E, G, H, L, M, N [12] . The taxonomy of the whitefly is based on the morphological characteristics of the fourth nymphal stage (pupal case) [13] .…”

Section: Introductionmentioning

confidence: 99%

Host Plant Mediated Population Variations of Cotton Whitefly Bemisia tabaci Gennadius (Aleyrodidae: Homoptera) Characterized with Random DNA Markers

Perumal¹

2009

American J. of Biochemistry and Biotechnology

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Problem statement: Whitefly, Bemisia tabaci is an important sucking pest of field, horticultural and ornamental plants causing feeding injuries besides spreading disease by acting as a vector of Gemini viruses. The polyphagous nature of the pest makes it as a highly complex species. Approach: The influence of host plants utilized by the species on the population differences at molecular level was attempted using Random Amplified Polymorphic DNA (RAPD) markers. Results: Ten RAPD primers out of the total seventeen primers screened produced 236 markers. The total number of bands obtained from each primer ranged from 11-35 with an average of 23.60 bands per primer. Of the pair wise combination among thirteen species, Srivilliputhur population showed the highest similarity index (0.826) while the lowest (0.111) was recorded by Namakkal population. The similarity coefficient based on the 236 RAPD markers generated ranged from 0.111-0.826. Three major clusters were formed from UPGMA dendrogram, which was constructed based on Jaccard's similarity. PCR screening demarcated the whitefly population based on the host species. The first cluster included population collected from okra and cotton, while second cluster comprised of population from eggplant and cauliflower and the third cluster included population from eggplant. It could be deduced that population from cotton and okra had 50% similarity, while 60-70% similarity was observed for population from eggplant and cauliflower. Conclusion: Our investigation offered the lead that within a narrow geographical region there exits variation based on host plants being utilized by the whitefly population.

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Host‐associated biotypes within West African populations of the whitefly Bemisia tabaci (Genn.), (Hom., Aleyrodidae)

Cited by 118 publications

References 11 publications

Begomovirus disease complex: emerging threat to vegetable production systems of West and Central Africa

Begomovirus disease complex: emerging threat to vegetable production systems of West and Central Africa

Gene expression in plant according to RNAi treatment of the tobacco whitefly

Host Plant Mediated Population Variations of Cotton Whitefly Bemisia tabaci Gennadius (Aleyrodidae: Homoptera) Characterized with Random DNA Markers

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