scholarly journals Toxicological Studies of Some Compounds on Two-Spotted Spider Mite Tetranychus urticae on Different Host Plants.

2016 ◽  
Vol 7 (7) ◽  
pp. 519-524
Author(s):  
H. Abd El- Rahman ◽  
M. El-keblawy
Keyword(s):  
Tetranychus Urticae ◽  
Host Plants ◽  
Spider Mite ◽  
Toxicological Studies ◽  
Two Spotted Spider Mite

Effects of Host Plants and Seasons on the Biology of the Two-Spotted Spider Mite,Tetranychus urticae(Koch)

2016 ◽  
Vol 24 (1) ◽  
pp. 188-196 ◽  
Author(s):  
H.F. El Taj ◽  
K.F. Hossain ◽  
M. Arifunnahar ◽  
M.A. Alim ◽  
M.A.A. Bachchu
Keyword(s):  
Tetranychus Urticae ◽  
Host Plants ◽  
Spider Mite ◽  
Two Spotted Spider Mite ◽  
Tetranychus Urticae Koch

scholarly journals Comparative genome and transcriptome analyses reveal innate differences in response to host plants by two color forms of the two-spotted spider mite Tetranychus urticae

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shi-Mei Huo ◽  
Zhi-Chao Yan ◽  
Feng Zhang ◽  
Lei Chen ◽  
Jing-Tao Sun ◽  
...  
Keyword(s):  
Gene Expression ◽  
Tetranychus Urticae ◽  
Host Plants ◽  
Spider Mite ◽  
Principal Component ◽  
Consistent Difference ◽  
Plant Interactions ◽  
Specific Expression ◽  
Two Spotted Spider Mite ◽  
Biological Performance

Abstract Background The two-spotted spider mite, Tetranychus urticae, is a major agricultural pest with a cosmopolitan distribution, and its polyphagous habits provide a model for investigating herbivore-plant interactions. There are two body color forms of T. urticae with a different host preference. Comparative genomics and transcriptomics are used here to investigate differences in responses of the forms to host plants at the molecular level. Biological responses of the two forms sourced from multiple populations are also presented. Results We carried out principal component analysis of transcription changes in three red and three green T. urticae populations feeding on their original host (common bean), and three hosts to which they were transferred: cotton, cucumber and eggplant. There were differences among the forms in gene expression regardless of their host plant. In addition, different changes in gene expression were evident in the two forms when responding to the same host transfer. We further compared biological performance among populations of the two forms after feeding on each of the four hosts. Fecundity of 2-day-old adult females showed a consistent difference between the forms after feeding on bean. We produced a 90.1-Mb genome of the red form of T. urticae with scaffold N50 of 12.78 Mb. Transcriptional profiles of genes associated with saliva, digestion and detoxification showed form-dependent responses to the same host and these genes also showed host-specific expression effects. Conclusions Our research revealed that forms of T. urticae differ in host-determined transcription responses and that there is form-dependent plasticity in the transcriptomic responses. These differences may facilitate the extreme polyphagy shown by spider mites, although fitness differences on hosts are also influenced by population differences unrelated to color form.

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