Pymetrozine interferes with transmission ofTomato yellow leaf curl virus by the whiteflyBemisia tabaci

Polston, Jane E.; Sherwood, Tracy A.

doi:10.1007/bf02979742

Cited by 41 publications

(36 citation statements)

References 19 publications

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“…(TYLCV) para plântulas de tomateiro (Polston & Sherwood, 2003). Todavia, resultados mais recentes demonstraram existir resistência cruzada a neonicotinoides e a pimetrozina em populações de B. tabaci (Nauen et al, 2013).…”

Section: Nomeunclassified

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

et al. 2016

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RESUMO: A associação de alguns vírus fitopatogênicos com seus vetores pode ou não alterar a ação do controle químico. Este trabalho objetivou avaliar a suscetibilidade de moscas-brancas virulíferas (com aquisição do begomovirus Tomato severe rugose virus, ToSRV) e avirulíferas (sem aquisição do ToSRV) aos principais inseticidas registrados para o seu controle na cultura do tomateiro. Foram realizados ensaios com plantas de tomateiro e discos foliares de feijão-de-porco. Os tratamentos foram arranjados em esquema fatorial de 7 (seis inseticidas + controle) e de 5 (quatro inseticidas + controle) x 2 {mosca-branca (MB) virulífera (V) ou avirulífera (AV)} e dispostos no delineamento em blocos ao acaso com seis e 25 repetições para o tomateiro e feijão-de-porco, respectivamente. Os inseticidas e concentrações avaliados foram: a) tomateiro: acefato (100 g), clotianidina (20 g), pimetrozina (40 g), piriproxifem (75 mL) e tiametoxam (20 g de i.a./100 L de calda) e diafentiurom (800 g de i.a./300 L de calda); b) feijão-de-porco: acefato (100 g), tiametoxam (20 g), pimetrozina (40 g de i.a./100 L) e diafentiurom (800 g de i.a./300 L de calda). Não houve diferença na suscetibilidade do vetor em razão de sua condição (V ou AV). Os inseticidas diafentiurom (87,68%±4,96) e tiametoxam (43,95%±9,43) proporcionaram maior mortalidade de MB no tomateiro, enquanto no feijão-de-porco diafentiurom (92,01%±2,68) e tiametoxam (86,39%±2,74) apresentaram desempenho similar. Diafentiurom foi o único inseticida que proporcionou controle satisfatório de B. tabaci em ambos os ensaios avaliados.

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Section: Nomeunclassified

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

et al. 2016

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“…These methods for whitefly colony establishment and maintenance, as well as manipulation to transmit plant viruses have been used successfully in a number of studies 4,11,12,14 as well as many others not cited. Using these methods with persistently transmitted viruses, we have routinely obtained the desired rates of transmission of 100% for selection for resistance, screening insecticides for their ability to interfere with transmission (and evaluation of resistance inducing compounds) 13,14,17,18 (Figure 9).…”

Section: Representative Resultsmentioning

confidence: 99%

“…Using these methods with persistently transmitted viruses, we have routinely obtained the desired rates of transmission of 100% for selection for resistance, screening insecticides for their ability to interfere with transmission (and evaluation of resistance inducing compounds) 13,14,17,18 (Figure 9). The procedures described here can and have been be adapted to many locations in both public and private research facilities.…”

Section: Representative Resultsmentioning

confidence: 99%

“…Therefore maintenance of virus cultures, biological and molecular characterization (identification of host range and symptoms) 3,13 , ecology 2,12 , require that the viruses be transmitted to experimental hosts using the whitefly vector. In addition the development of new approaches to management, such as evaluation of new chemicals 14 or compounds 15 , new cultural approaches 1,4,19 , or the selection and development of resistant cultivars 7,8,18 , requires the use of whiteflies for virus transmission. The use of whitefly transmission of plant viruses for the selection and development of resistant cultivars in breeding programs is particularly challenging 7 .…”

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Transmitting Plant Viruses Using Whiteflies

Polston

Capobianco

2013

JoVE

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Whiteflies, Hemiptera: Aleyrodidae, Bemisia tabaci, a complex of morphologically indistinquishable species 5 , are vectors of many plant viruses. Several genera of these whitefly-transmitted plant viruses (Begomovirus, Carlavirus, Crinivirus, Ipomovirus, Torradovirus) include several hundred species of emerging and economically significant pathogens of important food and fiber crops (reviewed by 9,10,16 ). These viruses do not replicate in their vector but nevertheless are moved readily from plant to plant by the adult whitefly by various means (reviewed by 2,6,7,9,10,11,17 ). For most of these viruses whitefly feeding is required for acquisition and inoculation, while for others only probing is required. Many of these viruses are unable or cannot be easily transmitted by other means. Therefore maintenance of virus cultures, biological and molecular characterization (identification of host range and symptoms) 3,13 , ecology 2,12 , require that the viruses be transmitted to experimental hosts using the whitefly vector. In addition the development of new approaches to management, such as evaluation of new chemicals 14 or compounds 15, new cultural approaches 1,4,19 , or the selection and development of resistant cultivars 7,8,18 , requires the use of whiteflies for virus transmission. The use of whitefly transmission of plant viruses for the selection and development of resistant cultivars in breeding programs is particularly challenging 7 . Effective selection and screening for resistance employs large numbers of plants and there is a need for 100% of the plants to be inoculated in order to find the few genotypes which possess resistance genes. These studies use very large numbers of viruliferous whiteflies, often several times per year.Whitefly maintenance described here can generate hundreds or thousands of adult whiteflies on plants each week, year round, without the contamination of other plant viruses. Plants free of both whiteflies and virus must be produced to introduce into the whitefly colony each week. Whitefly cultures must be kept free of whitefly pathogens, parasites, and parasitoids that can reduce whitefly populations and/or reduce the transmission efficiency of the virus. Colonies produced in the manner described can be quickly scaled to increase or decrease population numbers as needed, and can be adjusted to accommodate the feeding preferences of the whitefly based on the plant host of the virus.There are two basic types of whitefly colonies that can be maintained: a nonviruliferous and a viruliferous whitefly colony. The nonviruliferous colony is composed of whiteflies reared on virus-free plants and allows the weekly availability of whiteflies which can be used to transmit viruses from different cultures. The viruliferous whitefly colony, composed of whiteflies reared on virus-infected plants, allows weekly availability of whiteflies which have acquired the virus thus omitting one step in the virus transmission process.

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“…The causal agent of the disease has been isolated and identified as a single-strand DNA containing geminivirus species of the genus Begomovirus, and most of which posses a monopartite genome [11,12]. The tropical whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is the known vector for TYLCV [13,14]. The insect is the most noxious pest attacking field and greenhouse crops including tomato around the world [15].…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of Tomato Yellow Leaf Curl Virus in the Northern Regions of the West Bank, Palestine

Sawalha¹

2013

TOASJ

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Abstract:A survey was carried out in 2011 to study the epidemiology of tomato yellow leaf curl virus (TYLCV) in tomato growing sites of the Tobas and the Jenin districts. The survey studied the population of the virus-inoculative whiteflies and the possible virus reservoirs throughout the year. The maximum TYLCV-inoculative whitefly population was recorded in Tobas, compared with the Jenin district in the different growing seasons of tomato. In the Tobas district, the inoculative whiteflies started to appear in March and reached the maximum value of 7% in July and August. In the Jenin district, the maximum inoculative whitefly population of 6% was recorded in August. Such whiteflies started to appear in May, which is two months after their appearance in the Tobas district. Furthermore, populations of inoculative whiteflies occurred when farmers started their tomato growing seasons. The appearance of inoculative whiteflies coincided with availability of the virus natural reservoirs which harbor the virus and support the vector during the crop-free period. Infected cheese weed mallows (up to 12%) and tobacco plants (up to 7%) were the virus sources for whiteflies throughout the year in the Tobas and the Jenin districts respectively. Infected volunteer tomatoes (up to 93%) play a secondary role in the virus epidemiology as they disappear during winter (crop-free period) in both districts.

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Pymetrozine interferes with transmission ofTomato yellow leaf curl virus by the whiteflyBemisia tabaci

Cited by 41 publications

References 19 publications

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

Transmitting Plant Viruses Using Whiteflies

Epidemiology of Tomato Yellow Leaf Curl Virus in the Northern Regions of the West Bank, Palestine

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