title: Differing Behavioural Responses of Bemisia tabaci MEAM1 and MED to Cabbage Damaged by Conspecifics and Heterospecifics.
abstract: The whitefly Bemisia tabaci is a serious pest with an extensive host range. Previous research has shown that B. tabaci is a species complex with many cryptic species or biotypes and that the two most important species are MEAM1 (Middle East-Minor Asia 1) and MED (Mediterranean genetic group). MEAM1 and MED are known to differ in their preference for cabbage, Brassica oleracea, as a host plant, however, the mechanism underlying this preference is unknown. In the current study, a host choice experiment showed that MED prefers to settle and oviposit on undamaged cabbage plants rather than MED-damaged cabbage plants. However, MEAM1 prefers MED-damaged cabbage plants to undamaged plants and does not exhibit a significant preference for undamaged or MEAM1-damaged cabbage plants. On the basis of gas chromatography-mass spectrometry (GC-MS) analysis, the following volatiles were released in larger quantities from Q-damaged cabbage plants than from undamaged plants: 2-ethyl-1-hexanol, benzenemethanol, (E)-2-decenol, benzaldehyde, nonanal, acetic acid geraniol ester, 4-hydroxy-4-methyl-2-pentanone, decane, and α-longipinene. Only one volatile, 4-hydroxy-4-methyl-2-pentanone, was released in greater quantities from MEAM1-damaged cabbage plants than from undamaged plants. Our results suggest that differences in herbivore-induced host volatile release may help explain the differences between the preference of B. tabaci MEAM1 and MED for cabbage as a host.
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.|School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Kong
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zeng
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Xie
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Shaoli
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Qingjun
authors.initials: Q
authors.lastname: Wu
authors.affiliation: College of Life Science, Hubei University, Wuhan 430062, China.
authors.forename: Xiaoguo
authors.initials: X
authors.lastname: Jiao
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Baoyun
authors.initials: B
authors.lastname: Xu
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing 100081, China.
authors.forename: Youjun
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000818:Animals; D001937:Brassica / Q000378:metabolism*; D005260:Female; D006430:Hemiptera / Q000145:classification / Q000472:pathogenicity* / Q000502:physiology; D060434:Herbivory; D058507:Host Specificity; D054884:Host-Pathogen Interactions; D010058:Oviposition; D010935:Plant Diseases; D013045:Species Specificity; D055549:Volatile Organic Compounds / Q000378:metabolism
chemical_list: D055549:Volatile Organic Compounds