Asymmetric consequences of host plant occupation on the competition between the whiteflies Bemisia tabaci
 cryptic species MEAM1 and Trialeurodes vaporariorum
 (Hemiptera: Aleyrodidae)

Abstract Odorant binding proteins (OBPs) of insects play a critical role in chemical perceptions and choice of insect host plant. Bemisia tabaci is a notorious insect pest which can damage more than 600 plant species. In order to explore functions of OBPs in B. tabaci, here we investigated binding characteristics and function of odorant-binding protein 3 in B. tabaci (BtabOBP3). The results indicated that BtabOBP3 shows highly similar sequence with OBPs of other insects, including the typical signature motif of six cysteines. The recombinant BtabOBP3 protein was obtained, and the evaluation of binding affinities to tested volatiles of host plant was conducted, then the results indicated that β-ionone had significantly higher binding to BtabOBP3 among other tested plant volatiles. Furthermore, silencing of BtabOBP3 significantly altered choice behavior of B. tabaci to β-ionone. In conclusion, it has been demonstrated that BtabOBP3 exerts function as one carrier of β-ionone and the results could be contributed to reveal the mechanisms of choosing host plant in B. tabaci.

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New putative cryptic species detection and genetic network analysis of Bemisia tabaci (Hempitera: Aleyrodidae) in China based on mitochondrial COI sequences

Mitochondrial DNA Part A ◽

10.1080/24701394.2017.1307974 ◽

2017 ◽

Vol 29 (3) ◽

pp. 474-484 ◽

Cited By ~ 18

Author(s):

Jian Hu ◽

Xiaoyun Zhang ◽

Zhilin Jiang ◽

Feifei Zhang ◽

Yuanyuan Liu ◽

...

Keyword(s):

Network Analysis ◽

Cryptic Species ◽

Bemisia Tabaci ◽

Genetic Network ◽

Species Detection ◽

Mitochondrial Coi ◽

Coi Sequences

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Development of Bemisia tabaci (Gennadius,1889) biotype B on Lycopersicon spp. genotypes

Scientia Agricola ◽

10.1590/s0103-90162002000400007 ◽

2002 ◽

Vol 59 (4) ◽

pp. 665-669 ◽

Cited By ~ 12

Author(s):

Fancelli Marilene ◽

José Djair Vendramim

Keyword(s):

Antibiotic Resistance ◽

Host Plant ◽

Bemisia Tabaci ◽

Developmental Time ◽

Phytophagous Insects ◽

Insect Development ◽

Phloem Sap ◽

Direct Damage ◽

Antibiotic Effect ◽

Biotype B

Whiteflies are phytophagous insects, whose nymphs and adults suck the phloem sap, causing direct damage due to host plant weakness. In tomato (Lycopersicon spp.) crops, they are important vectors of limiting fitoviruses. The objective of this study was to determine the effects of Lycopersicon spp. genotypes on Bemisia tabaci (Gennadius, 1889) biotype B development under greenhouse conditions. The evaluated genotypes were LA462 (L. peruvianum), LA716 (L. pennellii), LA1584 (L. pimpinellifolium), LA1609 (L. peruvianum), LA1739 (L. hirsutum), P25 (L. esculentum), PI134417 (L. hirsutum f. glabratum) and Santa Clara (L. esculentum). LA716 was non-preferred for oviposition by the whitefly, which suggests an antixenotic effect. LA1584 showed an antibiotic resistance because nymphal survival was reduced and nymphal developmental time was increased. Antixenotic resistance was observed in LA1739 and PI134417, based on a reduction of oviposition. PI134417 also reduced nymphal survival, which suggests an antibiotic effect, but LA1739 was suitable for insect development. LA1609 was highly preferred for oviposition, however it reduced insect survival. P25 and Santa Clara (L. esculentum) were highly preferred for oviposition.

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