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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 345 - 352 (8page)
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초록· 키워드
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Auxin is a major plant hormone that regulates many developmental processes in plants. Arabidopsis thaliana YUCCA6 (AtYUCCA6) mediates the tryptophan-dependent auxin biosynthesis pathway in A. thaliana. To study the effect of auxin in sweetpotato [Ipomoea batatas (L.) Lam], we generated transgenic sweetpotato plants expressing AtYUCCA6 under the control of the oxidative stress-inducible SWPA2 promoter (referred to as SY plants). SY plants displayed high-auxin phenotypic traits such as narrow downward-curled leaves, increased height, and increased node numbers. SY plants showed increased tolerance to 5 μM of methyl viologen-mediated oxidative stress by maintaining a lower ion leakage than wild-type (WT) plants. Moreover, SY plants exhibited higher relative water contents and lower malondialdehyde contents than WT plants under drought stress. Young SY plants also showed inhibition of adventitious root growth. SY plants showed significantly lower storage root formation than WT plants. Our results indicate that AtYUCCA6-mediated auxin overproduction is associated with tolerance to oxidative and drought stress. It also suggests that negatively regulates the formation of storage roots in sweetpotato.
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참고문헌 (38)
참고문헌 신청
Arner ESJ / 2001 / Physiological functions of thioredoxin and thioredoxin reductase / Eur J Biochem 267:6102~6109
Cha JY / 2015 / A novel thiolreductase activity of Arabidopsis YUC6 confers drought tolerance independently of auxin biosynthesis / Nat Commun 6:8041
Cheng Y / 2006 / Auxin biosynthesis by the YUCCA flavin monooxygenases controls the formation of floral organs and vascular tissues in Arabidopsis / Genes Dev 20:1790~1799
Cheng Y / 2007 / Auxin synthesized by the YUCCA flavin monooxygenases is essential for embryogenesis and leaf formation in Arabidopsis / Plant Cell 19:2430~2439
Dai X / 2013 / The biochemical mechanism of auxin biosynthesis by an Arabidopsis YUCCA flavin-containing monooxygenase / J Biol Chem 288:1448~1457
Cha JY / 2015 / A novel thiolreductase activity of Arabidopsis YUC6 confers drought tolerance independently of auxin biosynthesis / Nat Commun 6:8041
Cheng Y / 2006 / Auxin biosynthesis by the YUCCA flavin monooxygenases controls the formation of floral organs and vascular tissues in Arabidopsis / Genes Dev 20:1790~1799
Cheng Y / 2007 / Auxin synthesized by the YUCCA flavin monooxygenases is essential for embryogenesis and leaf formation in Arabidopsis / Plant Cell 19:2430~2439
Dai X / 2013 / The biochemical mechanism of auxin biosynthesis by an Arabidopsis YUCCA flavin-containing monooxygenase / J Biol Chem 288:1448~1457
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