数字农科院2.0

The Silkworm (Bombyx Mori) Neuropeptide Orcokinin Is Involved In The Regulation Of Pigmentation

文献类型： 外文期刊

作者： Tang, Shunming;Qiu, Zhiyong;Qiu, Zhiyong;He, Xiaobai;Zhao, Qiaoling;Xia, Dingguo;Chen, Anli;Zhang, Guozheng;Li, Muwang;Wang, Pingyang;Shen, Xingjia;Wu, Meina;Wang, Wenbo;Bi, Simin;Tang, Shunming;He, Xiaobai;Xia, Dingguo;Qiu, Zhiyong;Qiu, Zhiyong;Zhao, Qiaoling;Shen, Xingjia;Wang, Pingyang;Li, Muwang;Zhang, Guozheng

作者机构：

关键词： Quail-Like Mutant; Orcokinin; Pigmentation; Neuropeptide; Bombyx Mori

期刊名称： INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY

ISSN： 0965-1748

年卷期： 2019 年 114 卷

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摘要： The natural colorful cuticles of insects play important roles in many physiological processes. Pigmentation is a physiological process with a complex regulatory network whose regulatory mechanism remains unclear. Bombyx mori pigmentation mutants are ideal materials for research on pigmentation mechanisms. The purple quail-like (q-l(p)) and brown quail-like (q-l(b)) mutants originated from plain silkworm breeds 932VR and 0223JH respectively exhibit similar cuticle pigmentation to that of the quail mutant. The q-l(p) mutant also presents a developmental abnormality. In this study, genes controlling q-l(p) and q-l(b) mutants were located on chromosome 8 by positional cloning. Then the neuropeptide gene orcokinin (OK) was identified to be the major gene responsible for two quail-like mutants. The B. mori orcokinin gene (BommoOK) produces two transcripts, BommoOKA and BommoOKB, by alternative splicing. The CRISPR/Cas9 system and orcokinin peptides injection were used for further functional verification. We show a novel function of BommoOKA in inhibiting pigmentation, and one mature peptide of orcokinin A, OKA_type2, is the key factor in pigmentation inhibition. These results provide a reference for studying the function of orcokinin and are of theoretical importance for studying the regulatory mechanism of pigmentation.

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