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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 61 - 68 (8page)
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Gibberellic Acid-Stimulated Arabidopsis (GASA) genes are involved in plant hormone signaling, cell division and elongation, as well as in responses to stress conditions in plants. In this study, we isolated a GASA gene from hybrid poplar (Populus alba × P. glandulosa) and analyzed its physiological phenotype and molecular functions in poplar.
PagGASA cDNA encodes a putative protein composed of 95 amino acids containing an N-terminal signal peptide and a conservative cysteine-rich C-terminal domain. Southern blot analysis revealed that one or two copies of the PagGASA are present in the poplar genome. The PagGASA transcripts were highly detected in flowers and roots. Moreover, the expression of PagGASA was induced by growth hormone (gibberellic acid) and stress hormones (abscisic acid, jasmonic acid, and salicylic acid). By using transgenic analysis, we showed that the upregulation of PagGASA in poplar provides high tolerance to drought stress. Therefore, our results suggest that PagGASA plays an important role in drought stress tolerance via stress-related plant hormone signaling in poplar.
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참고문헌 (33)
참고문헌 신청
Qu J / 2016 / Molecular and cellular characterization of GA-Stimultaed Transcripts GASA4 and GASA6 in Arabidopsis thaliana / Plant Sci 246:1~10
Roxrud J / 2007 / GASA4, one of the 14-member Arabidopsis GASA family of small polypeptides, regulates flowering and seed development / Plant Cell Physiol 48:471~483
Shi L / 1992 / Characterization of a shoot-specific, GA3- and ABA-regulated gene from tomato / Plant J 2:153~159
Sun S / 2013 / GASA14 regulates leaf expansion and abiotic stress resistance by modulating reactive oxygen species accumulation / J Exp Bot 64:1637~1647
Taylor BH / 1994 / Scheuring CF(1994)A molecular marker for lateral root initiation : the RSI-1 gene of tomato(Lycopersicon esculentum Mill)is activated in early lateral root primordial / Mol Gen Genet 243:148~157
Roxrud J / 2007 / GASA4, one of the 14-member Arabidopsis GASA family of small polypeptides, regulates flowering and seed development / Plant Cell Physiol 48:471~483
Shi L / 1992 / Characterization of a shoot-specific, GA3- and ABA-regulated gene from tomato / Plant J 2:153~159
Sun S / 2013 / GASA14 regulates leaf expansion and abiotic stress resistance by modulating reactive oxygen species accumulation / J Exp Bot 64:1637~1647
Taylor BH / 1994 / Scheuring CF(1994)A molecular marker for lateral root initiation : the RSI-1 gene of tomato(Lycopersicon esculentum Mill)is activated in early lateral root primordial / Mol Gen Genet 243:148~157
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