Performance of two species of whiteflies is unaffected by glucosinolate profile in Brassica plants
- 4 May 2021
- journal article
- research article
- Published by Wiley in Pest Management Science
- Vol. 77 (10), 4313-4320
- https://doi.org/10.1002/ps.6460
Abstract
BACKGROUD While plant glucosinolates are known to impart resistance to many insects, their role in the interactions between plants and many phloem‐feeding insects such as whiteflies are poorly understood. The whitefly Bemisia tabaci complex comprises many cryptic species that differ in the ability to utilize Brassica plants. However, whether Brassica plants‐specific traits such as glucosinolates determine differences of whiteflies in colonizing Brassica plants remains in question. RESULTS We first observed performance of two whitefly species MEAM1 and Asia II 3, which differ obviously in their ability to colonize Brassica plants, on four cultivars of three Brassica species that vary in glucosinolate profile. We found that the life history characteristics of each of the two whitefly species seems to be only marginally affected by cultivar. We next used wild‐type Arabidopsis plants and mutants defective in glucosinolate biosynthesis or hydrolysis to explore the effects of glucosinolates on the whitefly. We found that fecundity and development of immature stages of neither of the two whitefly species differ significantly between wild‐type and mutants. CONCLUSION The data suggest that glucosinolates may have little effect on the oviposition by adults and the survival and development of immature stages of MEAM1 and Asia II 3 whiteflies. The marked differences in colonizing Brassica crops between the two whitefly species are likely due to plant traits other than glucosinolates.Keywords
Funding Information
- National Natural Science Foundation of China (31930092)
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