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two spotted spider mite

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https://www.readbyqxmd.com/read/29124341/phytophagy-of-omnivorous-predator-macrolophus-pygmaeus-affects-performance-of-herbivores-through-induced-plant-defences
#1
Nina Xiaoning Zhang, Gerben J Messelink, Juan M Alba, Robert C Schuurink, Merijn R Kant, Arne Janssen
Plants possess various inducible defences that result in synthesis of specialized metabolites in response to herbivory, which can interfere with the performance of herbivores of the same and other species. Much less is known of the effects of plant feeding by omnivores. We found that previous feeding of the omnivorous predator Macrolophus pygmaeus on sweet pepper plants significantly reduced reproduction of the two-spotted spider mite Tetranychus urticae and western flower thrips Frankliniella occidentalis on the same plants, also on leaves that had not been exposed to the omnivore...
November 9, 2017: Oecologia
https://www.readbyqxmd.com/read/29119280/cross-talk-between-high-light-stress-and-plant-defence-to-the-two-spotted-spider-mite-in-arabidopsis-thaliana
#2
A K Barczak-Brzyżek, M Kiełkiewicz, P Gawroński, K Kot, M Filipecki, B Karpińska
Little is known about how plants deal with arthropod herbivores under the fluctuating light intensity and spectra which occur in natural environments. Moreover, the role of simultaneous stress such as excess light (EL) in the regulation of plant responses to herbivores is poorly characterized. In the current study, we focused on a mite-herbivore, specifically, the two-spotted spider mite (TSSM), which is one of the major agricultural pests worldwide. Our results showed that TSSM-induced leaf damage (visualized by trypan blue staining) and oviposition rate (measured as daily female fecundity) decreased after EL pre-treatment in wild-type Arabidopsis plants, but the observed responses were not wavelength specific...
November 8, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29107247/agroinfiltration-based-expression-of-hairpin-rna-in-soybean-plants-for-rna-interference-against-tetranychus-urticae
#3
Vimal Kumar Dubey, Ung Gyu Lee, Deok Ho Kwon, Si Hyeock Lee
The coatomer subunit alpha (COPA) and aquaporin 9 (AQ9) genes from the two-spotted spider mite, Tetranychus urticae, were previously determined to exhibit RNA interference (RNAi)-based lethality when their double-stranded RNAs were systemically delivered via multi-unit chambers (Kwon et al., 2016 [8]). In current study, the hairpin RNAs of the COPA and AQ9 were transiently expressed in soybean plants by agroinfiltration. When T. urticae was fed with the soybean plants agroinfiltrated with the COPA and AQ9 hairpin RNA cassettes, the cumulative mortality increased significantly at 6days post-infestation...
October 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29069313/developmental-phase-specific-mortality-after-ultraviolet-b-radiation-exposure-in-the-two-spotted-spider-mite
#4
Yasumasa Murata, Masahiro Osakabe
Exposure to ambient ultraviolet-B (UVB) radiation generates DNA lesions, such as cyclobutane pyrimidine dimers and 6-4 pyrimidine-pyrimidine photoproducts in Tetranychus urticae Koch (Acari: Tetranychidae). Larvae appeared normal and healthy after UVB irradiation. Conversely, many mites were trapped in their old epidermis or experienced retarded development and shrunk, thus failing to molt from protochrysalises to protonymphs and died. This suggested that DNA lesions per se were not causing lethality in mites unless damaged genes were expressed...
October 24, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29029248/efficacy-of-nanoencapsulated-thymus-eriocalyx-and-thymus-kotschyanus-essential-oils-by-a-mesoporous-material-mcm-41-against-tetranychus-urticae-acari-tetranychidae
#5
Asgar Ebadollahi, Jalal Jalali Sendi, Alireza Aliakbar
Inspite of well-established potentiality of plant essential oils as biopesticides, their environmentally low persistence is considered as a hindering obstacle for its commercialization. In the present study, chemical composition and toxicity of essential oils isolated from leaves of Thymus eriocalyx and Thymus kotschyanus were evaluated against two-spotted spider mite, Tetranychus urticae. The chemicals present in the crude oil were found to be thymol (28.83%), oleic acid (11.51%), palmitic acid (8.60%), borneol (5...
September 27, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28947875/incidence-of-pests-and-viral-disease-on-pepino-solanum-muricatum-ait-in-kanagawa-prefecture-japan
#6
Ok-Kyung Kim, Tadashi Ishikawa, Yoshihiro Yamada, Takuma Sato, Hirosuke Shinohara, Ken Takahata
BACKGROUND: The solanaceous fruit crop pepino (Solanum muricatum Ait.), originating in the Andes, is grown commercially in South American countries and New Zealand. In these areas, pests and diseases of pepino have been identified well; however, to date, these have seldom been investigated in detail in Japan. Herein, we attempt to reconstruct an agricultural production system for commercial pepino crops in Japan, and evaluate the incidence of pests and viral diseases on pepino. The findings of this study will facilitate in developing a better crop system for the commercial cultivation of healthy pepino fruits...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28882653/behavioural-responses-of-two-spotted-spider-mites-induced-by-predator-borne-and-prey-borne-cues
#7
Enikő Gyuris, Erna Szép, Jenő Kontschán, Attila Hettyey, Zoltán Tóth
Applying predatory mites as biological control agents is a well established method against spider mites which are major pests worldwide. Although antipredator responses can influence the outcome of predator-prey interactions, we have limited information about what cues spider mites use to adjust their behavioural antipredator responses. We experimentally exposed two-spotted spider mites (Tetranychus urticae) to different predator-borne cues (using a specialist predator, Phytoseiulus persimilis, or a generalist predator, Amblyseius swirskii), conspecific prey-borne cues, or both, and measured locomotion and egg-laying activity...
November 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28857675/plant-herbivore-interactions-a-case-of-an-extreme-generalist-the-two-spotted-spider-mite-tetranychus-urticae
#8
Cristina Rioja, Vladimir Zhurov, Kristie Bruinsma, Miodrag Grbic, Vojislava Grbic
Plant-herbivore interactions evolved over long periods of time, resulting in an elaborate arms race between interacting species. While specialist herbivores evolved specific strategies to cope with the defenses of a limited number of hosts, our understanding of how generalist herbivores deal with the defenses of a plethora of diverse host plants is largely unknown. Understanding the interaction between a plant host and a generalist herbivore requires an understanding of the plant's mechanisms aimed at defending itself and the herbivore's mechanisms intended to counteract diverse defenses...
December 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28834288/greenhouse-and-field-based-studies-on-the-distribution-of-dimethoate-in-cotton-and-its-effect-on-tetranychus-urticae-by-drip-irrigation
#9
Jiangtao He, Lijuan Zhou, Qiang Yao, Bo Liu, Hanhong Xu, Jiguang Huang
BACKGROUND: The two-spotted spider mite, Tetranychus urticae Koch is an important pest of cotton. We investigated the efficacy of dimethoate in controlling T. urticae by drip irrigation. Greenhouse and field experiments were carried out to determine the efficacy of dimethoate to T. urticae and the absorption and distribution of dimethoate in cotton. RESULTS: Greenhouse results showed that cotton leaves received higher amount of dimethoate compared to cotton roots and stems, with young leaves higher than old leaves and cotyledon the lowest among leaves...
August 18, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28767894/comparative-toxicity-of-essential-oil-and-blends-of-selected-terpenes-of-ocotea-species-from-pernambuco-brazil-against-tetranychus-urticae-koch
#10
Marcilio M DE Moraes, Claudio A G DA Camara, Milena M C DA Silva
Essential oils from the leaves of two species of the genus Ocotea that occur in the Atlantic Forest in the state of Pernambuco, Brazil, were analyzed using gas chromatography-mass spectrometry. The acaricidal activity of these oils as well as 11 selected components and blends were evaluated in fumigation and residual contact tests against the two-spotted spider mite (Tetranychus urticae). Sixty-seven constituents were identified, totaling 97.3 ± 0.3% and 97.8 ± 0.5% of the oils from O. duckei and O. glomerata, respectively...
July 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28736919/a-g326e-substitution-in-the-glutamate-gated-chloride-channel-3-glucl3-of-the-two-spotted-spider-mite-tetranychus-urticae-abolishes-the-agonistic-activity-of-macrocyclic-lactones
#11
Catherine Mermans, Wannes Dermauw, Sven Geibel, Thomas Van Leeuwen
BACKGROUND: The macrocyclic lactones abamectin and milbemectin are frequently used to control phytophagous mites such as Tetranychus urticae. Consequently, resistance has developed and was genetically linked with substitutions in the glutamate-gated chloride channel (GluCl) subunits TuGluCl1 and TuGluCl3. Here, we functionally validated a G326E substitution in TuGluCl3 by functional expression in Xenopus laevis oocytes followed by two-electrode voltage-clamp electrophysiology. RESULTS: Homomeric wild-type and mutated GluCl3 were successfully expressed...
July 24, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28725404/age-dependent-male-mating-tactics-in-a-spider-mite-a-life-history-perspective
#12
Yukie Sato, Peter T Rühr, Helmut Schmitz, Martijn Egas, Alexander Blanke
Males often fight with rival males for access to females. However, some males display nonfighting tactics such as sneaking, satellite behavior, or female mimicking. When these mating tactics comprise a conditional strategy, they are often thought to be explained by resource holding potential (RHP), that is, nonfighting tactics are displayed by less competitive males who are more likely to lose a fight. The alternative mating tactics, however, can also be explained by life-history theory, which predicts that young males avoid fighting, regardless of their RHP, if it pays off to wait for future reproduction...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28704448/rnai-based-reverse-genetics-in-the-chelicerate-model-tetranychus-urticae-a-comparative-analysis-of-five-methods-for-gene-silencing
#13
COMPARATIVE STUDY
Takeshi Suzuki, Maria Andreia Nunes, María Urizarna España, Hooman Hosseinzadeh Namin, Pengyu Jin, Nicolas Bensoussan, Vladimir Zhurov, Tawhid Rahman, Rebecca De Clercq, Pierre Hilson, Vojislava Grbic, Miodrag Grbic
RNA interference (RNAi) can be used for the protection against agricultural pests through the silencing of genes required for pest fitness. To assess the potential of RNAi approaches in the two-spotted spider mite, Tetranychus urticae, we compared 5 methods for the delivery of double-stranded RNA (dsRNA). These methods include mite feeding on either (i) leaves floating on a dsRNA solution, (ii) dsRNA-expressing plants, (iii) artificial diet supplemented with dsRNA, or (iv) dsRNA-coated leaves, and (v) mite soaking in a dsRNA solution...
2017: PloS One
https://www.readbyqxmd.com/read/28686745/protocols-for-the-delivery-of-small-molecules-to-the-two-spotted-spider-mite-tetranychus-urticae
#14
Takeshi Suzuki, María Urizarna España, Maria Andreia Nunes, Vladimir Zhurov, Wannes Dermauw, Masahiro Osakabe, Thomas Van Leeuwen, Miodrag Grbic, Vojislava Grbic
The two-spotted spider mite, Tetranychus urticae, is a chelicerate herbivore with an extremely wide host range and an extraordinary ability to develop pesticide resistance. Due to its responsiveness to natural and synthetic xenobiotics, the spider mite is becoming a prime pest herbivore model for studies of the evolution of host range, plant-herbivore interactions and mechanisms of xenobiotic resistance. The spider mite genome has been sequenced and its transcriptional responses to developmental and various biotic and abiotic cues have been documented...
2017: PloS One
https://www.readbyqxmd.com/read/28674017/disruption-of-a-horizontally-transferred-phytoene-desaturase-abolishes-carotenoid-accumulation-and-diapause-in-tetranychus-urticae
#15
Astrid Bryon, Andre H Kurlovs, Wannes Dermauw, Robert Greenhalgh, Maria Riga, Miodrag Grbić, Luc Tirry, Masahiro Osakabe, John Vontas, Richard M Clark, Thomas Van Leeuwen
Carotenoids underlie many of the vibrant yellow, orange, and red colors in animals, and are involved in processes ranging from vision to protection from stresses. Most animals acquire carotenoids from their diets because de novo synthesis of carotenoids is primarily limited to plants and some bacteria and fungi. Recently, sequencing projects in aphids and adelgids, spider mites, and gall midges identified genes with homology to fungal sequences encoding de novo carotenoid biosynthetic proteins like phytoene desaturase...
July 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28658392/maize-plants-produce-direct-resistance-elicited-by-tetranychus-urticae-koch-acari-tetranychidae
#16
P D Paulo, C G Lima, A B Dominiquini, M A M Fadini, S M Mendes, C G S Marinho
Plants can be attacked by a wide variety of herbivores. Thus, developing protective mechanisms for resistance against these agents is an advantage for survival and reproduction. Over the course of evolution, many resistance mechanisms against herbivory have been developed by the plants. Induced direct and indirect resistance mechanisms can manifest in plants after herbivore attack. The two-spotted spider mite Tetranychus urticae is not a pest of maize crops (Zea mays), despite being reported infesting plants that may have resistances against this herbivore...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28649257/mati-a-novel-protein-involved-in-the-regulation-of-herbivore-associated-signaling-pathways
#17
M Estrella Santamaría, Manuel Martinez, Ana Arnaiz, Félix Ortego, Vojislava Grbic, Isabel Diaz
The defense response of the plants against herbivores relies on a complex network of interconnected signaling pathways. In this work, we characterized a new key player in the response of Arabidopsis against the two-spotted spider mite Tetranychus urticae, the MATI (Mite Attack Triggered Immunity) gene. This gene was differentially induced in resistant Bla-2 strain relative to susceptible Kon Arabidopsis accessions after mite attack, suggesting a potential role in the control of spider mites. To study the MATI gene function, it has been performed a deep molecular characterization of the gene combined with feeding bioassays using modified Arabidopsis lines and phytophagous arthropods...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28613863/structural-characterization-of-a-eukaryotic-cyanase-from-tetranychus-urticae
#18
Caleb R Schlachter, Vincent Klapper, Nicky Wybouw, Taylor Radford, Thomas Van Leeuwen, Miodrag Grbic, Maksymilian Chruszcz
The two-spotted spider mite Tetranychus urticae is a polyphagous agricultural pest and poses a high risk to global crop production as it is rapidly developing pesticide resistance. Genomic and transcriptomic analysis has revealed the presence of a remarkable cyanase gene in T. urticae and related mite species within the Acariformes lineage. Cyanase catalyzes the detoxification of cyanate and is potentially an attractive protein target for the development of new acaricides. Phylogenetic analysis indicates that within the Acariformes, the cyanase gene originates from a single horizontal gene transfer event, which precedes subsequent speciation...
July 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28595916/combination-of-restriction-endonuclease-digestion-with-the-%C3%AE-%C3%AE-ct-method-in-real-time-pcr-to-monitor-etoxazole-resistance-allele-frequency-in-the-two-spotted-spider-mite
#19
Masahiro Osakabe, Tsuyoshi Imamura, Ryohei Nakano, Satoshi Kamikawa, Misono Tadatsu, Yoshinori Kunimoto, Makoto Doi
Monitoring resistance allele frequency at the early stage of resistance development is important for the successful acaricide resistance management. Etoxazole is a mite growth inhibitor to which resistance is conferred by an amino acid substitution in the chitin synthase 1 (CHS1; I1017F) in T. urticae. If the susceptible allele can be specifically digested by restriction endonuclease, the ΔΔCt method using real-time PCR for genomic DNA (RED-ΔΔCt method) may be available for monitoring the resistance allele frequency...
June 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28556282/interspecific-competition-counteracts-negative-effects-of-dispersal-on-adaptation-of-an-arthropod-herbivore-to-a-new-host
#20
A Alzate, K Bisschop, R S Etienne, D Bonte
Dispersal and competition have both been suggested to drive variation in adaptability to a new environment, either positively or negatively. A simultaneous experimental test of both mechanisms is however lacking. Here, we experimentally investigate how population dynamics and local adaptation to a new host plant in a model species, the two-spotted spider mite (Tetranychus urticae), are affected by dispersal from a stock population (no-adapted) and competition with an already adapted spider mite species (Tetranychus evansi)...
May 28, 2017: Journal of Evolutionary Biology
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