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RISS 인기검색어
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- 저자 : Zhao Te (검색결과 3 건)
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Sun, Hainan,Xu, Xiaomin,Hu, Zhiwei,Tjeng, Liu Hao,Zhao, Jie,Zhang, Qin,Lin, Hong-Ji,Chen, Chien-Te,Chan, Ting-Shan,Zhou, Wei,Shao, Zongping The Royal Society of Chemistry 2019 Journal of Materials Chemistry A Vol.7 No.16
<P>If different active sites in a catalyst have optimal binding to different reaction intermediates and short reaction paths among them, they may work cooperatively to enhance the oxygen evolution reaction (OER) activity. Based on this design principle, in this study, we start with a B-site ordered double perovskite Sr2FeMoO6−δ with poor OER activity as the host material to fulfill the requirement of a short pathway, and then, replace Mo with Ni and Fe with Co to optimize the synergistic interplay of the multi-active sites. Replacing Mo with Ni indeed dramatically enhances the OER activity and structural/operating stability. Further improvement in OER performance is realized by partial substitution of Fe with Co, leading to the development of a material with the nominal composition of Sr2Fe0.8Co0.2Mo0.65Ni0.35O6−δ, which outperforms the noble metal oxide IrO2 and is better than most of the electrocatalysts developed based on a single descriptor, such as Ba0.5Sr0.5Co0.8Fe0.2O3−δ (eg occupancy close to unity), PrBaCo2O5+δ (O 2p-band center relative to the Fermi level), and La0.5Sr0.5CoO3−δ (charge-transfer energy) in many aspects. As a universal method, combined structural and compositional tuning to create a cooperative effect among different active sites for intermediate adsorption and reaction in an ordered structure may provide a new way for the design of superior electrocatalysts for various applications.</P>
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Study on the function of Helicoverpa armigera Wnt1 gene using CRISPR/Cas9 system
Fu Xiaozheng,Li Rui,Qiu Qiqi,Wang Mengke,Zhao Te,Zhou Lin 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1
The Wnt signaling pathway, as a highly conserved signaling pathway in evolution, plays an important role in many biological processes. The research of Wnt signaling pathway through gene editing has been implemented in a variety of organisms. Among the various genome editing tools available for functional genomic research, CRISPR is popular because of its ease of use and versatility. Here, we use the CRISPR/Cas9 system to knock out the HaWnt1 gene of the important agricultural pest Helicoverpa armigera to explore the impacts on embryo development. Direct injection of Cas9 protein and Wnt1-specific single guide RNA (sgRNA) into H. armigera embryos successfully induced Wnt1 gene deletion mutants, which showed high lethality, abnormal segmenta tion, defected appendages and defected pigmentation. qRT-PCR analysis revealed that the deletion of Wnt1 gene affected the expression of several genes, which were closely related to the growth and development of insects. Our results indicate that HaWnt1 signaling pathway is essential for embryonic development of H. armigera. The study of the function of HaWnt1 gene not only lays the foundation for the study of the somatic development pattern of H. armigera, but also provides a candidate gene for genetic control of H. armigera.
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Song Nan,Wu Qiong,Lin Xingyu,Zhang Yang,Zhao Te 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.4
Craneflies (Tipuloidea or Tipulidae sensu lato) are one of the most diverse groups of true flies (Insecta, Diptera). The Tipuloidea and perhaps the Trichoceridae formed the infraorder Tipulomorpha, which is traditionally considered the most basal group of Diptera. Relationships among Tipulomorpha and the phylogenetic position of this infraorder within the whole Diptera remain to be settled. A mitochondrial genome (mitogenome) phylogeny of Diptera was produced to test the relationships within Tipulomorpha and its phylogenetic position. A complete mitogenome of Nephrotoma scalaris parvinotata (Tipuloidea, Tipulidae) was firstly sequenced with a nextgeneration sequencing approach. Compared with the published mitogenomes of Tipuloidea, the new mitoge nome had a larger genome size (17,862 nt), due to a longer non-coding control region. The gene order was identical to Drosophila yakuba. Phylogenetic reconstructions using different inference methods recovered Tipu lomorpha as monophyletic. And the Tipulomorpha was retrieved in a relatively basal position in Diptera. Within Tipulomorpha, the Tipuloidea and the Trichoceridae were strongly supported as reciprocally monophyletic. Relationships within Tipuloidea were resolved as (Pedicidae + (Limoniidae + (Cylindrotomidae + Tipulidae))). Well supported relationships include: Pedicidae was the sister group of (Limoniidae + (Tipulidae + Cylin drotomidae)); Limoniidae was paraphyletic with respect to (Tipulidae + Cylindrotomidae); Cylindrotomidae was the sister group of Tipulidae. The newly sequenced N. scalaris parvinotata clustered with other two Nephrotoma species at a derived position in Tipuloidea.
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