نتایج جستجو برای: سفیدبالک پنبه bemisia tabaci

تعداد نتایج: 4196  

2015
Wenbo Chen Daniel K. Hasegawa Kathiravetpillai Arumuganathan Alvin M. Simmons William M. Wintermantel Zhangjun Fei Kai-Shu Ling Brian T. Forschler

Whiteflies of the Bemisia tabaci (Hemiptera: Aleyrodidae) cryptic species complex are among the most important agricultural insect pests in the world. These phloem-feeding insects can colonize over 1000 species of plants worldwide and inflict severe economic losses to crops, mainly through the transmission of pathogenic viruses. Surprisingly, there is very little genomic information about white...

2015
Nathalie Becker Loup Rimbaud Frédéric Chiroleu Bernard Reynaud Gaël Thébaud Jean-Michel Lett

Of worldwide economic importance, Tomato yellow leaf curl virus (TYLCV, Begomovirus) is responsible for one of the most devastating plant diseases in warm and temperate regions. The DNA begomoviruses (Geminiviridae) are transmitted by the whitefly species complex Bemisia tabaci. Although geminiviruses have long been described as circulative non-propagative viruses, observations such as long per...

Journal: :Virology 2000
S Morin M Ghanim I Sobol H Czosnek

We have previously suggested that a GroEL homolog produced by the whitefly Bemisia tabaci endosymbiotic bacteria interacts in the insect hemolymph with particles of Tomato yellow leaf curl virus from Israel (TYLCV-Is), ensuring the safe circulative transmission of the virus. We have now addressed the question of whether the nontransmissibility of Abutilon mosaic virus from Israel (AbMV-Is) is r...

2017
Yuan Luo Qingguo Chen Junbo Luan Seung Ho Chung Joyce Van Eck R. Turgeon Angela E. Douglas

In planta RNAi against essential insect genes offers a promising route to control insect crop pests, but is constrained for many insect groups, notably phloem sap-feeding hemipterans, by poor RNAi efficacy. This study conducted on the phloem-feeding whitefly Bemisia tabaci reared on tomato plants investigated the causes of low RNAi efficacy and routes to ameliorate the problem. Experiments usin...

2013
Santosh Kumar Upadhyay Sameer Dixit Shailesh Sharma Harpal Singh Jitesh Kumar Praveen C. Verma K. Chandrashekar

BACKGROUND RNA interference has been emerged as an utmost tool for the control of sap sucking insect pests. Systemic response is necessary to control them in field condition. Whitefly is observed to be more prone to siRNA in recent studies, however the siRNA machinery and mechanism is not well established. METHODOLOGY/PRINCIPAL FINDINGS To identify the core siRNA machinery, we curated transcr...

2014
Xiao-Li Bing Wen-Qiang Xia Jia-Dong Gui Gen-Hong Yan Xiao-Wei Wang Shu-Sheng Liu

Wolbachia is the most prevalent symbiont described in arthropods to date. Wolbachia can manipulate host reproduction, provide nutrition to insect hosts and protect insect hosts from pathogenic viruses. So far, 13 supergroups of Wolbachia have been identified. The whitefly Bemisia tabaci is a complex containing more than 28 morphologically indistinguishable cryptic species. Some cryptic species ...

2007
Shu Wei Yaniv Semel Ben-Ami Bravdo Henryk Czosnek Oded Shoseyov

Transgenic Nicotiana tabacum plants expressing Aspergillus niger b-glucosidase (EC 3.2.1.21) gene (BGL1) in different subcellular compartments [cell wall (Tcw), endoplasmic reticulum (Ter), and vacuole (Tvc)] were analyzed to study the effects of BGL1 localization on plant growth and plant–insect interaction. Transgenic and non-transgenic plants were grown and characterized in a greenhouse with...

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دوره رشد پیش از بلوغ، مرگ و میر پیش از بلوغ، طول عمر بالغین، میزان تخم روزانه و کل میزان تخم، نسبت جنسی و پارامترهای جدول زندگی سفید بالک پنبه روی سه رقم بادنجان (قصری، اصفهانی و Inerash) در درجه حرارت ثابت ، ?C 30، رطوبت نسبی % 5±60 و طول دوره روشنایی به تاریکی D10: L14 تعیین شد. طول دوره رشد پیش از بلوغ این حشره روی رقم های مذکور به ترتیب،02/17 ، 07/16و 02/15 روز بود. درصد مرگ و میر پیش از ب...

کارایی عصاره­‌های اتانولی گیاهان روناسRubia tinctorum L. (Rubiaceae)، باریجه Ferula gummosa Bioss (Apiaceae) و سن شکارگر  Nesidiocoris tenuis Reuter (Miridae) روی سفید­بالک پنبه Bemisia tabaci Gennadius (Aleyrodidae),در مقایسه با اسپیروتترامات در شرایط نیمه آزمایشگاهی مورد بررسی قرار گرفت. در آزمایش ­‌های زیست­‌ سنجی LC50 دو عصاره گیاهی و ...

Journal: :Journal of morphology 2001
M Ghanim R C Rosell L R Campbell H Czosnek J K Brown D E Ullman

A microscopic analysis of the morphology and ultrastructure of the digestive, salivary, and reproductive systems of adult Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) B type was conducted using light, scanning, and transmission electron microscopy. The internal anatomy of B. tabaci was found to be similar to that reported for Trialeurodes vaporariorum. In a microscopic analysis of the sa...

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