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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 199 - 212 (14page)
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The dehydration-responsive element-binding(DREB) proteins play an important role in regulatingexpression of stress-inducible genes under abiotic stresses.
In this study, two genes encoding putative DREB proteins,named SsDREBa and SsDREBb, were cloned from halophyteSuaeda salsa L. using RACE method. The deducedSsDREBa and SsDREBb proteins contain a typical AP2/ERF domain. Multiple sequence alignments and phylogeneticanalysis revealed that the two SsDREB genes of S.
salsa were highly similar in AP2/ERF domains at thenucleotide and amino acid levels and belong to the A-6subgroup of the DREB transcription factor subfamily. Asubcellular localization assay showed that both SsDREBslocalized to the nucleus. Yeast one-hybrid experimentstestified that both proteins were able to specifically bind tothe DRE sequence and activate the expression of the downstreamHIS reporter gene in yeast. Quantitative real-timePCR analysis demonstrated that under normal conditions,the expression level of SsDREBa was the most high in theroots and no SsDREBa mRNAs were detected in the stems;SsDREBb expressed at relatively higher levels in the leavesthan in the roots and stems. The expression of SsDREa andSsDREBb genes in S. salsa roots and leaves was remarkablyinduced by high-salt and dehydration treatments, butnot by cold and ABA, and exhibited stronger induction inroots and leaves, respectively. These results indicate thatthe SsDREBa and SsDREBb are novel stress-responsivetranscription factors, which are involved in the drought andhigh-salt stress responses through ABA-independent pathwaysand could be used for production of stress-toleranttransgenic crops.
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참고문헌 (69)
참고문헌 신청
Abogadallah GM / 2011 / Overexpression of HARDY, an AP2/ERF gene from Arabidopsis, improves drought and salt tolerance by reducing transpiration and sodium uptake in transgenic Trifolium alexandrinum L / Planta 233:1265~1276
Agarwal PK / 2010 / Transcription factors in plants and ABA dependent and independent abiotic stress signalling / Biol Plant 54:201~212
Agarwal PK / 2006 / Role of DREB transcription factors in abiotic and biotic stress tolerance in plants / Plant Cell Rep 25:1263~1274
Bruhn L / 1992 / The N-Terminal 96 residues of MCM1, a regulator of cell type-specific genes in Saccharomyces cerevisiae, are sufficient for DNA binding, transcription activation, and interaction with a1 / Mol Cell Biol 12:3563~3572
Cao ZF / 2001 / Effect of two conserved amino acid residues on DREB1A function / Biochemistry 66:623~627
Agarwal PK / 2010 / Transcription factors in plants and ABA dependent and independent abiotic stress signalling / Biol Plant 54:201~212
Agarwal PK / 2006 / Role of DREB transcription factors in abiotic and biotic stress tolerance in plants / Plant Cell Rep 25:1263~1274
Bruhn L / 1992 / The N-Terminal 96 residues of MCM1, a regulator of cell type-specific genes in Saccharomyces cerevisiae, are sufficient for DNA binding, transcription activation, and interaction with a1 / Mol Cell Biol 12:3563~3572
Cao ZF / 2001 / Effect of two conserved amino acid residues on DREB1A function / Biochemistry 66:623~627
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