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Zhao Y, Sun Y, Huang S, Liu Z, Feng H. Identification of an anther-specific promoter from a male sterile AB line in Chinese cabbage ( Brassica rapa L. ssp. pekinensis). 3 Biotech 2022; 12:104. [PMID: 35463043 PMCID: PMC8971320 DOI: 10.1007/s13205-022-03160-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 03/05/2022] [Indexed: 11/30/2022] Open
Abstract
The promoter of the male sterile gene is important for studying male sterility. In this study, BraA08g014780.3C which differentially expressed between male sterile and fertile plants was identified from a genetic male sterile AB line of Chinese cabbage by RNA-seq. qRT-PCR revealed that BraA08g014780.3C was mainly expressed in the early stage of floral bud development in fertile plants, and preferentially expressed in their anthers. The promoter of BraA08g014780.3C was cloned and analyzed. Cis acting element analysis showed that the promoter of BraA08g014780.3C contains POLLEN1LELAT52 and GTGANTG10, which are both pollen-specific expression elements. The BraA08g014780.3Cp::GUS vector was constructed, then transformed to Arabidopsis thaliana Col-0. PCR analysis and sequencing of the transgenic Arabidopsis revealed that the GUS gene driven by the BraA08g014780.3C promoter was successfully transformed to the Arabidopsis. GUS staining indicated that the promoter of BraA08g014780.3C was an anther-specific promoter. Identifying the anther-specific promoter laid a foundation for revealing BraA08g014780.3C function in male sterility of Chinese cabbage. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03160-z.
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Affiliation(s)
- Ying Zhao
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Ying Sun
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Shengnan Huang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Zhiyong Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Hui Feng
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
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Jin J, Liu Y, Liang X, Pei Y, Wan F, Guo J. Regulatory Mechanism of Transcription Factor AhHsf Modulates AhHsp70 Transcriptional Expression Enhancing Heat Tolerance in Agasicles hygrophila (Coleoptera: Chrysomelidae). Int J Mol Sci 2022; 23:ijms23063210. [PMID: 35328631 PMCID: PMC8955217 DOI: 10.3390/ijms23063210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/03/2022] [Accepted: 03/12/2022] [Indexed: 12/24/2022] Open
Abstract
Agasicles hygrophila is a classical biological agent used to control alligator weed (Alternanthera philoxeroides). Previous research has indicated that the heat shock factor (HSF) is involved in regulating the transcriptional expression of Hsp70 in response to heat resistance in A. hygrophila. However, the regulatory mechanism by which AhHsf regulates the expression of AhHsp70 remains largely unknown. Here, we identified and cloned a 944 bp AhHsp70 promoter (AhHsp70p) region from A. hygrophila. Subsequent bioinformatics analysis revealed that the AhHsp70p sequence contains multiple functional elements and has a common TATA box approximately 30 bp upstream of the transcription start site, with transcription commencing at a purine base approximately 137 bp upstream of ATG. Promoter deletion analyses revealed that the sequence from -944 to -744 bp was the core regulatory region. A dual-luciferase reporter assay indicated that overexpressed AhHsf significantly enhanced the activity of AhHsp70p. Furthermore, qPCR showed that AhHsp70 expression increased with time in Spodoptera frugiperda (Sf9) cells, and AhHsf overexpression significantly upregulated AhHsp70 expression in vitro. Characterization of the upstream regulatory mechanisms demonstrated that AhHsf binds to upstream cis-acting elements in the promoter region of AhHsp70 from -944 to -744 bp to activate the AhHSF-AhHSP pathway at the transcriptional level to protect A. hygrophila from high temperature damage. Furthermore, we proposed a molecular model of AhHsf modulation of AhHsp70 transcription following heat shock in A. hygrophila. The findings of this study suggest that enhancing the heat tolerance of A. hygrophila by modulating the upstream pathways of the Hsp family can improve the biocontrol of A. philoxeroides.
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Affiliation(s)
- Jisu Jin
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
| | - Yiran Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
| | - Xiaocui Liang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
| | - Yiming Pei
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
| | - Fanghao Wan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Jianying Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.J.); (Y.L.); (X.L.); (Y.P.); (F.W.)
- Correspondence:
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Wang Y, Zhao Y, Wang S, Liu J, Wang X, Han Y, Liu F. Up-regulated 2-alkenal reductase expression improves low-nitrogen tolerance in maize by alleviating oxidative stress. PLANT, CELL & ENVIRONMENT 2021; 44:559-573. [PMID: 33215716 DOI: 10.1111/pce.13956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 05/11/2023]
Abstract
In plants, cellular lipid peroxidation is enhanced under low nitrogen (LN) stress; this increases the lipid-derived reactive carbonyl species (RCS) levels. The cellular toxicity of RCS can be reduced by various RCS-scavenging enzymes. However, the roles of these enzymes in alleviating oxidative stress and improving nutrient use efficiency (NUE) under nutrient stress remain unknown. Here, we overexpressed maize endogenous NADPH-dependent 2-alkenal reductase (ZmAER) in maize; it significantly increased the tolerance of transgenic plants (OX-AER) to LN stress. Under LN condition, the biomass, nitrogen accumulation, NUE, and leaf photosynthesis of the OX-AER plants were significantly higher than those of the wild-type (WT) plants. The leaf and root malondialdehyde and H2 O2 levels in the transgenic plants were significantly lower than those in WT. The expression of antioxidant enzyme-related genes ZmCAT3, ZmPOD5 and ZmPOD13 was significantly higher in the transgenic lines than in WT. Under LN stress, the nitrate reductase activity in the OX-AER leaves was significantly increased compared with that in the WT leaves. Furthermore, under LN stress, ZmNRT1.1 and ZmNRT2.5 expression was upregulated in the OX-AER plants compared with that in WT. Overall, up-regulated ZmAER expression could enhance maize's tolerance to LN stress by alleviating oxidative stress and improve NUE.
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Affiliation(s)
- Yi Wang
- State Key Laboratory of Wheat and Maize Crop Science, College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, China
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yanxiang Zhao
- College of Plant Protection, China Agricultural University, Beijing, China
- Key Lab of Integrated Crop Disease and Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Shanshan Wang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Junfeng Liu
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiqing Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
| | - Yanlai Han
- State Key Laboratory of Wheat and Maize Crop Science, College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, China
| | - Fang Liu
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
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