Whiteflies

Muniyappa, V.

doi:10.1016/b978-0-12-326450-3.50007-3

Cited by 29 publications

(8 citation statements)

References 42 publications

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“…From 1926 to 1981, B. tabaci was reported as a sporadic pest and was the most important whitefly vector of plant viruses in subtropical, tropical, and fr inge temperate zones where winters are mild enough to permit year-round survival (12,13,26,28,36,38,48,52,75,77,101). The roles that agricultural praCtices and market trends have played in the development of biotypes have not been critically considered.…”

Section: Historymentioning

confidence: 99%

The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

Brown

Frohlich²,

Rosell³

1995

Annu. Rev. Entomol.

821

404

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The recent emergence of whitefly species of the genus Bemisia as virus vectors and pests worldwide has stimulated investigat i ons into their biology. The invasion of pantropical agroecosystems by an exotic whitefly and increased pressures by indigenous whiteflies elsewhere have led to the examination of Bemisia tabaci biology with a new perspective. The concept of host races or biotypes was proposed in the 1950s to describe select B. tabaci populations with definitive host associations and specific virus-vector capabilities. How ever, little attention has been given to the mechanisms involved. Biochemical, molecular, and whole-system approaches are underway to examine the under lying diversity among reproductively isolated popUlations or biotypes of B.tabaci. l present address:

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Section: Historymentioning

confidence: 99%

The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

Brown

Frohlich²,

Rosell³

1995

Annu. Rev. Entomol.

821

404

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“…Bemisia tabaci has increased in importance globally since the 1990s, as a serious pest of vegetable, fibre, and root crops (Duffus, 1987; Otim‐Nape et al., 1997; Polston & Anderson, 1997; Varma & Malathi, 2003), because of the polyphagous nature of some biotypes and the diverse ways that it damages crops. These are direct feeding, inducing phytotoxic disorders and, most significantly, by vectoring numerous plant viruses (Bird & Maramorosch, 1978; Muniyappa, 1980; Duffus, 1987; Maruthi et al., 2002; Jones, 2003; Varma & Malathi, 2003; Colvin et al., 2004). The majority of these viruses belong to the genus Begomovirus of the family Geminiviridae (Brunt, 1986; Byrne et al., 1990; Varma & Malathi, 2003), which causes some of the world's most economically important plant‐virus diseases.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of three genotypic clusters of Bemisia tabaci and the rapid spread of the B biotype in south India

Rekha

Maruthi

Muniyappa

et al. 2005

Entomologia Exp Applicata

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The whitefly, Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae), is generally considered to have originated from the Indian subcontinent, although little information has so far been collected on the molecular diversity of populations present in this region. The genetic diversity of B. tabaci populations from Karnataka State, south India was analysed using the random amplified polymorphic DNA‐polymerase chain reaction (RAPD‐PCR) technique and partial mitochondrial cytochrome oxidase I (mtCOI) gene sequences (689 bases) of 22 selected samples. A total of 108 whitefly samples analysed by RAPD‐PCR produced 89 polymorphic bands, and cluster analyses grouped them according to their geographic origin into ‘north’ and ‘south’ Karnataka. Phylogenetic analysis of mtCOI gene sequences with reference B. tabaci sequences from other Asian countries divided them into three genotypic clusters. Each cluster was supported with high bootstrap values (82–100%) and the individuals belonging to each cluster shared high nucleotide identities (up to 100%). This indicated at least three distinct genotypes, apparently indigenous to India, which are also present in China, Malaysia, Nepal, Pakistan, and Thailand. These coexist with the B biotype, which was first reported in India in 1999, and has since spread rapidly to other states in south India. The B biotype was more common than the indigenous B. tabaci, in locations where it had been present for more than 2 years. This is reminiscent of the situation in the Americas during the early 1990s, where the B biotype replaced existing biotypes and caused unprecedented losses to agriculture.

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“…tuhuci est vectrice d'environ 60 virus phytophages (Muniyappa, 1980). dont les plus importants sont:…”

Section: Pest Significanceunclassified

“…tubuci is a vector of approximately 60 plant viruses (Muniyappa, 1980). The following, mostly geminiviruses are the most important:…”

Section: Pest Significancementioning

confidence: 99%

Fiches Informatives Oepp Sur Les Organismes De Quarantaine Eppo Data Sheets on Quarantine Organisms

1989

EPPO Bulletin

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Whiteflies

Cited by 29 publications

References 42 publications

The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

Occurrence of three genotypic clusters of Bemisia tabaci and the rapid spread of the B biotype in south India

Fiches Informatives Oepp Sur Les Organismes De Quarantaine Eppo Data Sheets on Quarantine Organisms

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