Feeding behavior explains the different effects of cabbage on MEAM1 and MED cryptic species of Bemisia tabaci  

作　　者：Jie Hu Jin-Jian Yang Bai-Ming Liu Hong-Ying Cui You-Jun Zhang Xiao-Guo Jiao 

机构地区：[1]State Key Laboratory of Biocatalysis and Enzyme Engineering,Center for Behavioral Ecology&Evolution,School of Life Sciences,Hubei University,Wuhan,China [2]Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing,China [3]Tianjin Institute of Plant Protection,Tianjin,China [4]Department of Entomology,College of Plant Protection,China Agricultural University,Beijing,China

出　　处：《Insect Science》2020年第6期1276-1284,共9页昆虫科学（英文版）

基　　金：the National Key R&D Program of China(2017YFD0200400);National Natural Science Foundation of China(31371941,31572012,31772171,31601637);the Beijing Key Laboratory for Pest Control and Sustainable Cultivation of Vegetables,the Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences(CAAS-ASTIP-IVFCAAS);the Natural Science Fund of Tianjin(17JCZDJC33700).

摘　　要：MEAMI(Middle East-Asia Minor 1."B"biotype)anpl MED(Mediterranean,"Q"biotype)are the two most destructive ery pie species of the Bemisia tabaci complex on the planet.Our previous studies have shown that MEAMI outcompets MED on cabbage;the underlying mechanism is unknown.In the Brassicaceae family,the glucosinolate-myrosinase defense system plays a crucial role im deterring feeding,inhibiting growth,and eausing acute toxicity against a wide range of generalist herbivores.In the present study.we first compared the surv ival of MEAMI and MED exposed to sinigin(a glucosinolate)and myosinase(an enzyme that degrades glucosinolates);we found that survival of both species was high in response 10 sinigrin alone bul was near zer0 in response to sinigrin+myrosinase.We then used electropenetrography(lectrical penetration graphs,EPG)to assess the feeding bchaviors of MEAMI and MED whiteflies on cabbage.The EPG results revealed that the me an dunution of each potential drop(pd,indicating an intreellular puncture)was subsantialy longer for MED than MEAMI on eabbage,indicating that the exposure to the toxic hydrolysates of glucosinolate and myrosinase is greater for MED than for MEAMI.We therefore conclude that dffreces in penetrating bchaviors may help explain the dfferent fiects of cabbuge on MEAMI and MED whitefly species.

关 键 词：Bemisia tabaci glucosinolate-myrosinase system potential drop electrical penetration graph 

分 类 号：Q96[生物学—昆虫学]