Identification of the inducible activity in the promoter of the soybean BBI-DII gene exposed to abiotic stress or abscisic acid
文献类型： 外文期刊
作者： Cheng, Lishu 1 ; Wei, Shuang 1 ; Liu, Kuocheng 1 ; Zhao, Xu 2 ; Zhang, Jun 3 ; Zhao, Yan 1 ;
作者机构： 1.Qiqihar Univ, Coll Life Sci & Agroforestry, Wenhua St 42, Qiqihar 161006, Heilongjiang, Peoples R China
2.Jilin Prov Inst Prod Qual Supervis & Inspection, Changchun 130022, Peoples R China
3.Heilongjiang Acad Agr Sci, Branch Anim Husb & Vet, Qiqihar 161005, Peoples R China
关键词： Soybean; BBI-DII gene; Salt and drought-inducible promoter; 5'& nbsp;Deletion analysis; Transgenic tobacco
期刊名称：PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN： 0971-5894
年卷期： 2023 年
页码：
收录情况： SCI
摘要： The expression of the soybean Bowman- Birk proteinase isoinhibitor DII (BBI-DII) gene and the inducible activity of its promoter were studied under salt, drought, low temperature, and abscisic acid (ABA) exposure conditions. The BBI-DII gene was induced by salt, drought, low temperature, and ABA, and the relative expression levels were 103.09-, 107.01-, 17.25- and 27.24-fold, respectively, compared with the untreated control. The putative promoter, designated BP1 (- 1255 to + 872 bp), located 5'-upstream of the BBI-DII gene was cloned. The expression of the GUS gene in pCAM-BP1 transgenic tobacco plants was highest at 5 h after treatment with salt, drought, low temperature and ABA, especially under salt and drought. Using histochemical staining and fluorescence analysis of GUS, BP1 activity under salt and drought conditions after 5 h was 1.03 and 1.07-fold, respectively, compared with that of the CaMV35S promoter. Based on a 5' deletion analysis, the segment (+ 41 to + 474 bp) was the basal region that responded to salt and drought, whereas the segment (- 820 to + 41 bp) was the area that responded to increased salt and drought activity. The BP2 (- 820 to + 872) activities were 0.98- and 1.02-fold compared with that of BP1 under salt and drought conditions and was 435 bp shorter than BP1. The salt- and drought-inducible activities of the BP2 promoter in the roots, stems, and leaves of transgenic tobacco plants were stable. Taken together, BP2 is more suitable than the BP1 promoter for the study and molecular breeding of stress-resistant soybean plants.
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