지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.10
- 수록면
- 339 - 353 (15page)
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초록· 키워드
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We investigated select transgenic lines of Gossypium hirsutum that over-express AtRAV1 or AtABI5 transcription factors. The hypothesis is that these lines have enhanced responses to abscisic acid (ABA) resulting in greater water use efficiencies (WUE). We measured leaf surface temperatures (LST), stomatal density, absolute and relative sizes of guard cell apertures, and ABA concentrations in cotyledons. We characterized transgene protein expression and activities in transient assays in Nicotiana benthamiana, in transgenic cotton seeds by immunoblot and by endogenous expression in leaves of an effector of ABA responses (GhDREB). AtRAV11-1-5 and AtABI51-1-1 over-expression lines had trends of lower levels of ABA in well-watered and drought-stressed cotyledons, and all events tested had higher leaf stomatal conductance and photosynthesis rates under drought in greenhouse, and lower LSTs than control Coker 312 under drought stress conditions. Notably, AtRAV11-1-5 cotyledons had significantly higher stomatal densities and 26% smaller guard cell apertures than Coker 312 under drought stress, providing a plausible explanation why LSTs across lines were lower concordant with smaller stomatal apertures. These traits may contribute to intrinsic WUE and assimilate traits of larger leaf areas and longer boll fibers previously shown in these and several independent AtRAV1 and AtABI5 events in the greenhouse and field. These results are consistent with the hypothesis that over-expression of AtRAV1 results in an ABA-hypersensitive phenotype manifest as reduced expression of endogenous GhDREB effector, and lower levels of endogenous ABA in cotyledons associated with greater reductions in pore apertures during stress and increased stomatal density.
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참고문헌 (53)
참고문헌 신청
Ando E / 2013 / TWIN SISTER OF FT, GIGANTEA, and CONSTANS have a positive but indirect effect on blue light-induced stomatal opening in Arabidopsis / Plant Physiol 162:1529~1538
Brocard IM / 2002 / Regulation and role of the Arabidopsis Abscisic Acid-Insensitive 5 gene in abscisic acid, sugar, and stress response / Plant Physiol 129:1533~1543
Castillejo C / 2008 / The balance between CONSTANS and TEMPRANILLO activities determines FT expression to trigger flowering / Curr Biol 18:1338~1343
Joon-Yung Cha / 2017 / GIGANTEA is a co-chaperone which facilitates maturation of ZEITLUPE in the Arabidopsis circadian clock / Nature Communications 8(1):3
Chak RKF / 2000 / The genes ABI1 and ABI2 are involved in abscisic acid- and droughtinducible expression of the Daucus carota L. Dc3 promoter in guard cells of transgenic Arabidopsis thaliana L / Heynh Planta 210:875~883
Brocard IM / 2002 / Regulation and role of the Arabidopsis Abscisic Acid-Insensitive 5 gene in abscisic acid, sugar, and stress response / Plant Physiol 129:1533~1543
Castillejo C / 2008 / The balance between CONSTANS and TEMPRANILLO activities determines FT expression to trigger flowering / Curr Biol 18:1338~1343
Joon-Yung Cha / 2017 / GIGANTEA is a co-chaperone which facilitates maturation of ZEITLUPE in the Arabidopsis circadian clock / Nature Communications 8(1):3
Chak RKF / 2000 / The genes ABI1 and ABI2 are involved in abscisic acid- and droughtinducible expression of the Daucus carota L. Dc3 promoter in guard cells of transgenic Arabidopsis thaliana L / Heynh Planta 210:875~883
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