ABSTRACT For many insect-vectored plant viruses, the relationship between feeding behavior and vector competence may prove integral to an understanding of epidemiology resulting disease. While plant-infecting viruses are well known change host physiology in a way that makes them more attractive vectors, viral manipulation vectors themselves has only recently been reported. Previous research suggested rapid spread Tomato yellow leaf curl virus (TYLCV) throughout China facilitated by its...

Journal Article Further Spread of and Domination by Bemisia tabaci (Hemiptera: Aleyrodidae) Biotype Q on Field Crops in China Get access Huipeng Pan, Pan Search for other works this author on: Oxford Academic PubMed Google Scholar Dong Chu, Chu Daqing Ge, Ge Shaoli Wang, Wang Qingjun Wu, Wu Wen Xie, Xie Xiaoguo Jiao, Jiao Baiming Liu, Liu Xin Yang, Yang Nina ... Show more Qi Su, Su Baoyun Xu, Xu Youjun Zhang 3 3Corresponding author, e-mail: zhangyj@mail.caas.net.cn Economic Entomology,...

Background Tomato yellow leaf curl virus (TYLCV) was introduced into China in 2006, approximately 10 years after the introduction of an invasive whitefly, Bemisia tabaci (Genn.) B biotype. Even so distribution and prevalence TYLCV remained limited, economic damage minimal. Following Q biotype 2003, spread started to accelerate. This has lead hypothesis that two biotypes might not be equally competent vectors TYLCV. Methodology/Principal Findings The infection frequency field-collected B....

While every individual of Bemisia tabaci (Hemiptera: Aleyrodidae) harbors the primary symbiont (P-symbiont) Portiera, infection frequencies six secondary symbionts (S-symbionts) including Hamiltonella, Arsenophonus, Cardinium, Wolbachia, Rickettsia and Fritschea vary greatly among different populations. To characterize factors influencing dynamics S-symbionts in B. tabaci, gene-specific PCR were conducted to screen for presence P-symbiont Portiera 61 (17 B 44 Q biotypes) field populations...

Tomato yellow leaf curl virus (TYLCV) was first detected in China 2006, following the introduction of Bemisia tabaci Q into 2003. Since then, incidence TYLCV tomato fields has greatly increased as abundance and distribution whiteflies containing bacterial symbiont Hamiltonella with high frequency. This suggested that might associate transmission efficiency by whitefly vector. Here we report evidence is closely associated acquisition, retention Our findings combined outbreaks Q, provided an...

Abstract Bemisia tabaci is a serious pest of vegetables and other crops worldwide. The most damaging predominant B. biotypes are B Q both vectors tomato yellow leaf curl virus (TYLCV). Previous research has shown that outperforms in many respects but comparative lacking on the ability to transmit viruses. In present study, we tested hypothesis differ their TYLCV this difference helps explain outbreaks. We compared acquisition, retention transmission by females males. found more efficient...

The sweetpotato whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae), is one of the most widely distributed agricultural pests. Although it has developed resistance to many registered insecticides including neonicotinoid insecticide thiamethoxam, mechanisms that regulate are poorly understood. To understand molecular basis thiamethoxam resistance, "omics" analyses were carried out examine differences between resistant and susceptible B. at both transcriptional translational levels.A total 1,338...

In China, Bemisia tabaci Q (commonly known as biotype Q) has rapidly displaced B B) in the past 6 years.The mechanisms underlying such phenomenon have been studied extensively recent years; however, we not come to a definitive conclusion yet.In present study, differences host suitability between and whitefly adults five plants (cabbage, cotton, cucumber, poinsettia, tomato) were evaluated based on their respective feeding behaviors using direct-current electrical penetration graph (DC-EPG)...

Concurrent spread of Tomato yellow leaf curl virus (TYLCV) with invasion Bemisia tabaci Q rather than B in China suggests a more mutualistic relationship between TYLCV and B. To assess this hypothesis, we quantified the impacts on performance competitiveness laboratory. The results showed that relative to their non-infected counterparts feeding cotton (a non-host for TYLCV), infected exhibited significant reductions life-history traits, whereas only marginal reductions. While performed...

The whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) harbors several bacterial symbionts. Among the secondary (facultative) symbionts, Hamiltonella has high prevalence and infection frequencies, suggesting that it may be important for biology ecology of its hosts. Previous reports indicated increases fitness and, based on complete sequencing genome, have ability to synthesize cofactors amino acids are required by host but not sufficiently synthesized or primary endosymbiont,...

RNA methylation modifications are widespread in eukaryotes and prokaryotes, with N

Journal Article Facultative Symbiont Hamiltonella Confers Benefits to Bemisia tabaci (Hemiptera: Aleyrodidae), an Invasive Agricultural Pest Worldwide Get access Qi Su, Su 1College of Plant Protection, Hunan University, Changsha, 410128, P. R. China.2Department Institute Vegetables and Flowers, Chinese Academy Sciences, Beijing 100081, China. Search for other works by this author on: Oxford Academic PubMed Google Scholar Kerry M. Oliver, Oliver 3Department Entomology, University Georgia,...

Abstract BACKGROUND Over recent decades, many efficacious insecticides have been applied for control of Bemisia tabaci , one the most notorious insect pests worldwide. Field‐evolved insecticide resistance in B. has developed globally, but remains poorly understood China. RESULTS In this study, a total 30 field samples whitefly from eight provinces China were collected 2015 to 2018. Twenty‐four populations identified as Mediterranean, ‘Q’ type (MED), three Middle East‐Asia Minor 1, ‘B’...

Nitrogen is an essential element for all life on earth. metabolism, including excretion, growth, development, and survival of plants animals alike. Several nitrogen metabolic processes have been described, but the underlying molecular mechanisms are unclear. Here, we reveal a unique process metabolism in whitefly Bemisia tabaci , global pest. We show that it has acquired two bacterial uricolytic enzyme genes, B. urea carboxylase ( BtUCA ) allophanate hydrolase BtAtzF ), through horizontal...

Abstract We conducted three experiments for management of Bemisia tabaci (Gennadius) biotype ‘B’ on tomatoes under greenhouse conditions: (i) vertically placing yellow sticky cards either parallel or perpendicular to tomato rows at a rate 1 per 3‐m row; (ii) releasing Eretmocerus sp. nr. rajasthanicus once 30 adults/m 2 in the high whitefly density greenhouses (> 10 adults/plant), twice 15 5‐day interval low (< adults/plant); and (iii) using combinations that were placed parasitoids...

Plant pathogens and insect herbivores often share hosts under natural conditions. Hence, pathogen-induced changes in a host plant can affect the herbivore vice versa. Even though viruses are ubiquitous field, little is known about plant-mediated interactions between nonvector herbivores. Here we tested whether performance of sweet potato whitefly, Bemisia tabaci (Gennadius) biotype Q, was altered when raised on pepper infected with Tomato spotted wilt virus (TSWV). TSWV infection reduced B....

Host-plant volatiles play vital roles for insects to locate foraging, mating, and oviposition sites in the environment. As one of devastating invasive forestry pests, Hyphantria cunea causes a great annual loss China, understanding its chemical ecology is an important task. The current research was done terms analysis, electrophysiology, behavioral assays on H. assess olfactory reception toward host-plant volatiles. A screen possible common host done, targeting five favored hosts cunea,...

Abstract B and Q are two putative species of the emisia tabaci complex ( H emiptera: A leyrodidae), among most invasive destructive pests crops horticultural plants worldwide. In C hina, predominates is displacing B. Although researchers have proposed that higher capacity to utilize host plays an important role in its replacement B, there few relevant field surveys experimental studies. The difference assessment between multiple‐choice rather than no‐choice situations may be essential...

While virus-vector-host interactions have been a major focus of both basic and applied ecological research, little is known about how different levels plant defense interact with prior herbivory to affect these relationships. We used genetically-modified strains tomato (Solanum lycopersicum) varying in the jasmonic acid (JA) pathways explore affects virus (tomato yellow leaf curl virus, 'TYLCV'), its vector (the whitefly Bemisia tabaci MED), host.Virus-free MED preferred low-JA over high-JA...

Summary Although many vector‐borne plant pathogens can alter vector behaviour to the pathogen's benefit, how plants might counter such manipulation is unknown. In Tomato yellow leaf curl virus (‘ TYLCV ’)– Bemisia tabaci –tomato interaction, ‐mediated changes in feeding improves viral uptake and transmission. We tested jasmonic acid JA ’), a central regulator of antiherbivore defences, affected ability (A) manipulate behaviour; (B) infect plants. Viruliferous fed much more than virus‐free...

The impact of symbionts on their insect hosts depends infection density. In the current study, we investigated effects host plants (cucumber, cabbage, and cotton) relative amount Portiera Hamiltonella in whitefly Bemisia tabaci (Gennadius) Q. amounts 3 plant B. Q populations with same genetic background were evaluated by quantitative PCR. whiteflies cabbage population harbored more than those cucumber cotton populations, did not differ statistically between populations. that population,...