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- 저자 : Shen Yongmei (검색결과 2 건)
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Yang Zhen,Xie Jiqin,Yang Yu,Sun Xiaohong,Jing Jie,Shen Yongmei,Yue Bisong,Zhang Xiuyue 한국곤충학회 2021 Entomological Research Vol.51 No.12
Thymosin is a physiologically active polypeptide hormone which has many functions involved in promoting wound healing, promoting hair growth, and accelerating tissue and organ regeneration. American cockroach (Periplaneta americana) has three subtypes thymosin (THY1, THY2, THY3) which are different splices from the same thymosin gene. Real-time PCR was used to detect and analyze the expression differences of THY1 and THY2 in different stages, sexes, tissues and after stimulation by bacteria. Thymosins were expressed in adult, eclosion, and ootheca, and their expression levels were significantly up-regulated during the eclosion period, showing the thymosin might be involved in the eclosion process. The expression levels of thymosins in females were higher than males, and the differences in eclosion stages were more significant (P < 0.01), indicating that they were closely related to development and female reproduction. The expressions of THY1 and THY2 in hemolymph were significantly higher (P < 0.01) than that in other tissues. The up-regulated expression of thymosin in two immune-related tissues (Hemolymph and adipose) after Escherichia coli stimulation further confirmed its involvement in the immune response. Our research would provide a basis for screening of novel pesticides target genes.
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Rongyan Gong,Xin Guo,Jinnan Ma,Xuhao Song,Yongmei Shen,Funeng Geng,Megan Price,Xiuyue Zhang,Bisong Yue 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.3
The complete mitochondrial genome (mitogenome) of Periplaneta brunnea was sequenced in this study and used to reconstruct the phylogenetic relationship of Blattodea. The circular mitogenome was 15,604 bp long and exhibited typical gene organization and order, consistent with other sequenced Periplaneta mitogenomes. The initiation codon of the P. brunnea COX1 gene was unusual in that no typical ATN or TTG start codon was found. The two longest intergenic spacer sequences found in the P. brunnea mitogenome were 21 and 17 bp long. Twenty-one base spacer had a 4 bp motif (TATT) between tRNA-Glu and tRNA-Met that conservatively displayed in 9 sequenced blattarian mitogenomes. The second spacer was between tRNA-Ser (UCN) and NAD1 containing a 7 bp motif (WACTTAA) that was highly conserved in 14 blattarian mitogenomes. The control region showed a relatively fixed motif present in 6 Blattidae mitogenomes, with a big stem-loop structure. Phylogenetic analyses were conducted using site-homogeneous models based on 13 protein-coding genes (PCGs) and two RNA genes. The trees derived from Bayesian inference and maximum likelihood analyses and recovered a relatively stable relationship among major lineages except for the position of Polyphagidae and inter-family relationships of Blaberidae. Analyses supported the monophyly of Blattidae, Blaberidae, Blattellidae, Polyphagidae, Dictyoptera, and the paraphyly of Blattaria. We also found Mantodea was the sister clade to (Blattaria+Isoptera), being the basal position of Dictyoptera in all topologies. Meanwhile, our results also consistently supported that Isoptera should be clustered with Blattaria of Blattodea.
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