The embryo lethal induced by mutation of Bdpaired in oriental fruit fly, Bactrocera dorsalis.

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ID: 28725
2019
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Abstract
Pair-rule genes were identified and named for their role in segmentation in animal embryos. Paired, a homolog of mammalian PAX3, acts as one of several pair-rule genes and is key in defining the boundaries of future parasegments and segments during insect embryogenesis.We cloned the paired gene from the oriental fruit fly, Bactrocera dorsalis, and then applied CRISPR/Cas9-mediated genome editing to investigate its physiological function in the embryonic stage of this pest. We identified one transcript for a paired homolog in B. dorsalis, which encodes a protein containing a Paired Box domain and Homeobox domain. Phylogenetic analysis confirmed that the paired gene is highly conserved and the gene was highly expressed at the 12-14 h-old embryonic stage. Knock-out of Bdpaired led to a lack of segment boundaries, cuticular deficiency, and embryonic lethality. Sequence analysis of the CRISPR/Cas9 mutants exhibited different insertion and deletions in the Bdpaired locus. In addition, the relative expression of Wingless (Wg) and Abdominal A (Abd-A) genes were significantly downregulated in the Bdpaired mutant embryos.These results indicated that Bdpaired gene is critical for embryonic development of B. dorsalis, and could be a novel molecular target for genetic-based pest management practices to combat this serious invasive pest. This article is protected by copyright. All rights reserved.
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Authors Wang, Yaohui;Gao, Bingli;Zhang, Guijian;Qi, Xuewei;Cao, Shuai;Akami, Mazarin;Huang, Yongping;Niu, Changying;
Journal Pest management science
Year 2019
DOI
10.1002/ps.5602
URL
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