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https://www.readbyqxmd.com/read/28214467/paxillin-a-crossroad-in-pathological-cell-migration
#1
REVIEW
Ana María López-Colomé, Irene Lee-Rivera, Regina Benavides-Hidalgo, Edith López
Paxilllin is a multifunctional and multidomain focal adhesion adapter protein which serves an important scaffolding role at focal adhesions by recruiting structural and signaling molecules involved in cell movement and migration, when phosphorylated on specific Tyr and Ser residues. Upon integrin engagement with extracellular matrix, paxillin is phosphorylated at Tyr31, Tyr118, Ser188, and Ser190, activating numerous signaling cascades which promote cell migration, indicating that the regulation of adhesion dynamics is under the control of a complex display of signaling mechanisms...
February 18, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28210981/assessing-common-bean-cultivars-for-resistance-to-the-soybean-looper-chrysodeixis-includens-lepidoptera-noctuidae
#2
R Morando, E L L Baldin, P L Cruz, A L Lourenção
The soybean looper Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) is known as an important pest of leguminous plants worldwide. In Brazil, this pest species is gaining importance to producers of the common bean Phaseolus vulgaris L. (Fabaceae) because it limits field production of the crop. Chemical control is still the primary method of insect control. However, due to the possible harmful effects of pesticides to humans and the environment, alternative and less aggressive practices are being investigated...
February 16, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28210764/review-biosafety-assessment-of-bt-rice-and-other-bt-crops-using-spiders-as-example-for-non-target-arthropods-in-china
#3
REVIEW
Huilin Yang, Yuande Peng, Jianxiang Tian, Juan Wang, Jilin Hu, Qisheng Song, Zhi Wang
Since the birth of transgenic crops expressing Bacillus thuringiensis (Bt) toxin for pest control, the public debate regarding ecological and environmental risks as well as benefits of Bt crops has continued unabated. The impact of Bt crops, especially on non-target invertebrates, has received particular attention. In this review, we summarize and analyze evidences for non-target effects of Bt rice on spiders, major predators in rice fields. Bt rice has been genetically modified to express the Bt protein, which has been shown to be transferred and accumulate in spiders as part of their food chain...
February 16, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28208692/economic-impact-of-the-introduction-and-establishment-of-drosophila-suzukii-on-sweet-cherry-production-in-switzerland
#4
REVIEW
Dominique Mazzi, Esther Bravin, Manuela Meraner, Robert Finger, Stefan Kuske
First detected in Switzerland in 2011, the invasive Drosophila suzukii, spotted wing drosophila, has caused recurring costs for growers of berries and fruit. Recommended management approaches rely on a set of methods, tailored to suit crop requirements under the prevailing local conditions. Control of D. suzukii represents a substantial economic burden for growers, in terms of material, equipment, new infrastructure and extra labour. However, those growers who invest wisely to deliver unblemished produce are rewarded with high payoffs...
February 8, 2017: Insects
https://www.readbyqxmd.com/read/28205641/the-tiered-evaluation-of-the-effects-of-transgenic-cry1c-rice-on-cyrtorhinus-lividipennis-a-main-predator-of-nilaparvata-lugens
#5
Yu Han, Fugang Ma, Muhammad Nawaz, Yu Wang, Wanlun Cai, Jing Zhao, Yueping He, Hongxia Hua, Yulan Zou
T1C-19, a newly developed transgenic cry1C rice line, expresses cry1C under the control of the maize ubiquitin promoter, and is highly resistant to lepidopteran pests of rice. Cyrtorhinus lividipennis is the major predator of the eggs and young nymphs of Nilaparvata lugens, which is the main non-target sap-sucking insect pest of Bt rice. C. lividipennis may be exposed to Cry1C protein, thus biosafety evaluations of transgenic cry1C rice on C. lividipennis should be conducted before the commercialization of T1C-19...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202879/two-strains-of-roof-rats-as-effective-models-for-assessing-new-object-reaction
#6
Yasushi Kiyokawa, Kazuyuki D Tanaka, Akiko Ishii, Kaori Mikami, Masatoshi Katayama, Ryoko Koizumi, Syota Minami, Tsutomu Tanikawa, Yukari Takeuchi
Wild animals generally avoid even small and harmless novel objects and/or familiar objects moved to a novel position, which is termed "new-object reaction." Although new-object reaction appears to be a biologically important characteristic for animals, little progress has been made in understanding the neural mechanisms underlying new-object reaction. One reason might be the lack of effective experimental animals. Two strains of roof rats (Sj and Og strains) were established from wild roof rats caught in Shinjuku, Tokyo, and one of the Ogasawara Islands, respectively, by a Japanese pest control company...
February 16, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28199783/next-generation-transgenic-cotton-pyramiding-rnai-and-bt-counters-insect-resistance
#7
Mi Ni, Wei Ma, Xiaofang Wang, Meijing Gao, Yan Dai, Xiaoli Wei, Lei Zhang, Yonggang Peng, Shuyuan Chen, Lingyun Ding, Yue Tian, Jie Li, Haiping Wang, Xiaolin Wang, Guowang Xu, Wangzhen Guo, Yihua Yang, Yidong Wu, Shannon Heuberger, Bruce E Tabashnik, Tianzhen Zhang, Zhen Zhu
Transgenic crops producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) are extensively cultivated worldwide. To counter rapidly increasing pest resistance to crops that produce single Bt toxins, transgenic plant "pyramids" producing two or more Bt toxins that kill the same pest have been widely adopted. However, cross-resistance and antagonism between Bt toxins limits the sustainability of this approach. Here we describe development and testing of the first pyramids of cotton combining protection from a Bt toxin and RNA interference (RNAi)...
February 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28195667/rna-interference-of-carboxyesterases-causes-nymph-mortality-in-the-asian-citrus-psyllid-diaphorina-citri
#8
Abdelaziz Kishk, Helmy A I Anber, Tsamoh K AbdEl-Raof, AbdEl-Hakeem D El-Sherbeni, Sobhy Hamed, Siddarame Gowda, Nabil Killiny
Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae), is an important pest of citrus. In addition, D. citri is the vector of Huanglongbing, a destructive disease in citrus, also known as citrus greening disease caused by Candidatus Liberibacter asiaticus. Huanglongbing causes huge losses for citrus industries. Insecticide application for D. citri is the major strategy to prevent disease spread. The heavy use of insecticides causes development of insecticide resistance. We used RNA interference (RNAi) to silence genes implicated in pesticide resistance in order to increase the susceptibility...
February 13, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28195429/double-stranded-rna-delivery-through-soaking-mediates-silencing-of-the-muscle-protein-20-and-increases-mortality-to-the-asian-citrus-psyllid-diaphorina-citri
#9
Xiudao Yu, Gowda Siddarame, Nabil Killiny
BACKGROUND: Asian citrus psyllid, Diaphorina citri Kuwayama, is the most important economic pest of citrus because it transmits Candidatus Liberibacter asiaticus (CLas), the causal agent of huanglongbing (HLB). Silencing genes by RNA interference (RNAi) is a promising approach for controlling D. citri. RNAi-based insect management strategies depend on the selection of suitable target genes. RESULTS: The muscle protein 20 gene DcMP20 was characterized from D. citri in an effort to impair proper muscle development through RNAi...
February 13, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28187835/lethal-and-sublethal-effects-of-the-chitin-synthesis-inhibitor-chlorfluazuron-on-bradysia-odoriphaga-yang-and-zhang-diptera-sciaridae
#10
Peng Zhang, Yun-He Zhao, Qiu-Hong Wang, Wei Mu, Feng Liu
Bradysia odoriphaga Yang and Zhang is the primary insect pest that affects Chinese chive in northern China. Nevertheless, very few studies have been conducted on the use of chitin synthesis inhibitors (CSIs) for the control of B. odoriphaga. Here, lethal and sublethal effects of the CSI chlorfluazuron on B. odoriphaga were studied to explore the use for integrated pest management (IPM) of B. odoriphaga. A contact and ingestion toxicity bioassay showed that chlorfluazuron was more active against B. odoriphaga than three other CSIs, with a 72h LC50 of 0...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187834/pyrethroid-resistance-in-iranian-field-populations-of-rhipicephalus-boophilus-annulatus
#11
Seyyed Payman Ziapour, Sadegh Kheiri, Mahmoud Fazeli-Dinan, Farzaneh Sahraei-Rostami, Reza Ali Mohammadpour, Mohsen Aarabi, Seyed Hassan Nikookar, Mohammad Sarafrazi, Fatemeh Asgarian, Ahmadali Enayati, Janet Hemingway
Resistance to acaricides in ticks is becoming increasingly widespread throughout the world; therefore, tick control requires resistance monitoring for each tick species. The aims of this study were to monitor the susceptibility status of the cattle tick, Rhipicephalus (Boophilus) annulatus (Acari: Ixodidae), against pyrethroid acaricides from Mazandaran Province, northern Iran, and where resistance was evident, and establish the possible underlying mechanisms. Fully engorged adult R. (B.) annulatus females collected on cattle from Mazandaran Province...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187833/effects-of-high-temperature-on-life-history-traits-and-heat-shock-protein-expression-in-chlorpyrifos-resistant-laodelphax-striatella
#12
Lihua Wang, Dan Shan, Yueliang Zhang, Xiangdong Liu, Yang Sun, Zhichun Zhang, Jichao Fang
The resistance of the small brown planthopper (SBPH), Laodelphax striatella, to insecticides has been widely found in China, and has posed serious problems to efforts to control the pest. To determine the costs and benefits of resistance, the life tables of chlorpyrifos-resistant and -susceptible strains were constructed at 24 and 30°C. The results showed the resistant SBPH (YN-CPF) had lower fitness at 24°C, but slightly higher fitness at 30°C compared to the susceptible SBPH. Transcriptomic analysis showed there are five heat shock protein genes changed their expression, and the up-regulated genes are LsHsc70-1 and LsHsc70-2...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187832/lethal-and-sublethal-effects-of-cyantraniliprole-on-helicoverpa-assulta-lepidoptera-noctuidae
#13
Junfeng Dong, Kai Wang, Yang Li, Shaoli Wang
Cyantraniliprole is a novel anthranilic diamide insecticide registered for the control of many sucking and chewing insect pests including the oriental tobacco budworm, Helicoverpa assulta (Guenée), which is an important lepidopteran pest of tobacco in China. This study determined the lethal and sublethal effects of cyantraniliprole on a treated parental generation and on an untreated offspring generation of H. assulta. Cyantraniliprole was incorporated in the diet of 3rd-instar larvae of the parental generation...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187831/functional-analysis-of-five-trypsin-like-protease-genes-in-the-oriental-fruit-fly-bactrocera-dorsalis-diptera-tephritidae
#14
Ya-Li Li, Ming-Zhe Hou, Guang-Mao Shen, Xue-Ping Lu, Zhe Wang, Fu-Xian Jia, Jin-Jun Wang, Wei Dou
Insect midgut proteases catalyze the release of free amino acids from dietary proteins and are essential for insect normal development. To date, digestive proteases as potential candidates have made great progress in pest control. To clarify the function of trypsin-like protease genes in the digestive system of Bactrocera dorsalis, a serious pest of a wide range of tropical and subtropical fruit and vegetable crops, five trypsin genes (BdTry1, BdTry2, BdTry3, BdTry4 and BdTry5) were identified from transcriptome dataset, and the effects of feeding condition on their expression levels were examined subsequently...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187826/metabolic-resistance-in-nilaparvata-lugens-to-etofenprox-a-non-ester-pyrethroid-insecticide
#15
Huahua Sun, Baojun Yang, Yixi Zhang, Zewen Liu
Etofenprox, a non-ester pyrethroid insecticide, will be registered to control rice pests such as the brown planthopper (BPH, Nilaparvata lugens Stål) in mainland China. Insecticide resistance is always a problem to the effective control of N. lugens by chemical insecticides. An etofenprox resistance selection of N. lugens was performed in order to understand the related mechanisms. Through successive selection by etofenprox for 16 generations in the laboratory, an etofenprox-resistant strain (G16) with the resistance ratio (RR) of 422...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187824/expression-of-bacillus-thuringiensis-cytolytic-toxin-cyt2ca1-in-citrus-roots-to-control-diaprepes-abbreviatus-larvae
#16
Sulley Ben Mahmoud, John E Ramos, Robert G Shatters, David G Hall, Stephen L Lapointe, Randall P Niedz, Pierre Rougé, Ronald D Cave, Dov Borovsky
Diaprepes abbreviatus (L.) is an important pest of citrus in the USA. Currently, no effective management strategies of D. abbreviatus exist in citriculture, and new methods of control are desperately sought. To protect citrus against D. abbreviatus a transgenic citrus rootstock expressing Bacillus thuringiensis Cyt2Ca1, an insect toxin protein, was developed using Agrobacterium-mediated transformation of 'Carrizo' citrange [Citrus sinensis (L) Osbeck Poncirus trifoliate (L) Raf]. The transgenic citrus root stock expressed the cytolytic toxin Cyt2Ca1 constitutively under the control of a 35S promoter in the transgenic Carrizo citrange trifoliate hybrid including the roots that are the food source of larval D...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28187562/type-localities-of-heteroptera-insecta-hemiptera-from-turkey
#17
Ahmet Dursun, Meral Fent
The Heteroptera (Hemiptera) fauna of the Palaearctic Region is represented by 9365 species belonging to 1632 genera of which 1349 species belonging to 469 genera are also recorded from Turkey. Type localities of 237 species are in Turkey of which 108 species and 4 subspecies are endemic for the Heteroptera fauna of Turkey, indicating the importance of the country as a refugium, genetic hotspot and dispersal centre during pleistocene glaciation. Some heteroptera are important in agriculture as predators used in biological control or as ectoparasits and pests on plants...
February 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/28185177/influence-of-uv-a-radiation-on-oxidative-stress-and-antioxidant-enzymes-in-mythimna-separata-lepidoptera-noctuidae
#18
Arif Ali, Muhammad Adnan Rashid, Qiu Ying Huang, Chao-Liang Lei
Abiotic stress factors, including ultraviolet (UV) radiation, significantly affect insect life. UV-A radiation (320-400 nm) has been widely used for insect control since it increases the production of ROS and causes oxidative cell damage. In the present study, we evaluated the effects of UV-A irradiation on an important pest in China, the ear-cutting caterpillar, Mythimna separata (Lepidoptera: Noctuidae). We exposed 3-day-old M. separata adults to UV-A radiation for different periods of time (0, 30, 60, 90, and 120 min) and evaluated the resulting total antioxidant capacity and the activity of the antioxidant enzymes superoxide dismutase, catalase, peroxidase, and glutathione-S-transferase...
February 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28183247/streptomyces-as-overexpression-system-for-heterologous-production-of-an-antimicrobial-peptide
#19
Marisol Roldán-Tapia, Jozef Anné, Ana Gisela Reyes, Ulises Carrasco, Cesar Millán-Pacheco, Javier Barrios-González, Armando Mejía
Defense mechanisms of plants against phytopathogens include cationic antimicrobial peptides (CAPs). The broad-spectrum activity of these peptides has been evaluated previously against different phytopathogens. Their lack of toxicity for plants and animals is a promising feature for pest control. Although, some attempts have been made previously in order to increase their heterologous expressions, the employed strategies have so far proven to be ineffective. Low production yield and elevated costs are the obstacles to overcome...
February 8, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28181532/a-floral-fragrance-methyl-benzoate-is-an-efficient-green-pesticide
#20
Yan Feng, Aijun Zhang
Over-reliance on synthetic pesticides in insect pest control has caused widespread public and scientific concerns for human health and the environment, especially since many insect pests have already developed resistances to conventional pesticides and Bt products. For this reason, there is a considerable interest in development of alternative control methods for insect pest management. Based on laboratory studies, we report that methyl benzoate (MB), a naturally-occurring compound in many plants, may possess toxicity against various stages of a variety of insect pests, including the brown marmorated stinkbug, Halyomorpha halys, diamondback moth, Plutella xylostella, and tobacco hornworm, Manduca sexta, as well as the spotted wing drosophila, Drosophila suzukii...
February 9, 2017: Scientific Reports
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