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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.2
- 수록면
- 89 - 99 (11page)
- DOI
- 10.1007/s11816-022-00809-2
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초록· 키워드
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The abscisic acid (ABA) plays a crucial role not only in plant development but also in adaptive responses to biotic and abiotic stresses. 9-cis-epoxycarotenoid dioxygenase (NCED), a key rate-limiting enzyme in ABA biosynthesis in plants, is involved in the response of plants to stress. To better understand the roles of ABA and its interactions during cold stress in Jatropha curcas, the JcNCED3 gene was cloned from J. curcas, and its overexpression was functionally verified in yeast and Arabidopsis thaliana. The full-length cDNA of JcNCED3 was 2450 bp and contained an entire open reading frame (ORF) of 1770 bp that encodes a polypeptide of 589 amino acids with a theoretical molecular weight of 65.45 kDa and pI value of 6.97. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis revealed that JcNCED3 was specifically expressed in different organs, abundantly in leaves and cotyledons, but scarcely in stems. The expression of the JcNCED3 gene was remarkably cold-induced in stems and roots, reaching its highest levels after 3 h (1.23-fold) of chilling stress in stems. Interestingly, overexpression of JcNCED3 in yeast could notably enhance the cold resistance of the INVSc1 host strain. Furthermore, transgenic Arabidopsis also showed stronger resistance to cold than the control. The results of this study might provide a theoretical foundation for further studies on the putative application potential of JcNCED3-related genetic engineering in J. curcas.
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