title: Cloning and characterization of a novel betaine aldehyde dehydrogenase gene from Suaeda corniculata.
abstract: Glycine betaine is an important quaternary ammonium compound that is produced in response to several abiotic stresses in many organisms. The synthesis of glycine betaine requires the catalysis of betaine aldehyde dehydrogenase (BADH), which can convert betaine aldehyde into glycine betaine in plants, especially in halotolerant plants. In this study, we isolated the full-length cDNA of BADH from Suaeda corniculata (ScBADH) using reverse transcriptase-polymerase chain reaction and rapid amplification of cDNA ends. Next, we analyzed the expression profile of ScBADH using real-time PCR. The results showed that ScBADH expression was induced in the roots, stems, and leaves of S. corniculata seedlings under salt and drought stress. Next, ScBADH was overexpressed in Arabidopsis, resulting in the transgenic plants exhibiting enhanced tolerance over wild-type plants under salt and drought stress. We then analyzed the levels of glycine betaine and proline, as well as superoxide dismutase (SOD) activity, during salt stress in WT and transgenic Arabidopsis. The results indicated that overexpression of ScBADH produced more glycine betaine and proline, and increased SOD activity under NaCl treatment. Our results suggest that ScBADH might be a positive regulator in plants during the response to NaCl.
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: F W
authors.initials: FW
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: M L
authors.initials: ML
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: C
authors.initials: C
authors.lastname: Guo
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: N
authors.initials: N
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: X W
authors.initials: XW
authors.lastname: Li
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: H
authors.initials: H
authors.lastname: Chen
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Dong
authors.affiliation: Jilin Technology Innovation Center for Soybean Region, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: X F
authors.initials: XF
authors.lastname: Chen
authors.affiliation: Jilin Technology Innovation Center for Soybean Region, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: Z M
authors.initials: ZM
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin, China.
authors.forename: H Y
authors.initials: HY
authors.lastname: Li
mesh_terms: D001622:Betaine / Q000378:metabolism; D050728:Betaine-Aldehyde Dehydrogenase / Q000235:genetics* / Q000378:metabolism; D019663:Chenopodiaceae / Q000201:enzymology / Q000235:genetics*; D003001:Cloning, Molecular; D055864:Droughts; D018506:Gene Expression Regulation, Plant; D005998:Glycine / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D054712:Salinity; D013312:Stress, Physiological; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D010940:Plant Proteins; D001622:Betaine; D011392:Proline; D013482:Superoxide Dismutase; D050728:Betaine-Aldehyde Dehydrogenase; D005998:Glycine