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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.8
- 수록면
- 265 - 271 (7page)
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초록· 키워드
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Development of xylem cells is affected by environmental stresses such as drought and oxidative stress, and recent findings suggested that jasmonic acid (JA) mediates this process through interaction with other phytohormones such as cytokinin. In this study, we showed that polar auxin transport regulated by PIN3 and PIN7 is involved in the JA-mediated xylem development in vascular tissues. The mutant plants that lack the activity of PIN3 and PIN7 responsible for the auxin transport developed extra xylems in vascular tissues such as the JA-treated wild-type plants. Visualization of auxin response and xylem development in the roots treated with NPA, an inhibitor of polar auxin transport, suggested that disruption of polar auxin transport is involved in the xylem phenotype of pin3 pin7 double mutants. We also found that cytokinin increases expressions of PIN3 and PIN7 responsible for the auxin transport while JA decreases only PIN7. These suggested that PIN7-mediated polar auxin transport system modulates xylem development in response to JA. The finding that JA affects auxin distribution in root vascular tissues further supported this. Collectively, these suggest that JA promotes xylem development by disrupting auxin transport in vascular tissues, and the auxin efflux genes, more especially PIN7 whose expression is suppressed by JA mediates this process.
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참고문헌 (37)
참고문헌 신청
Ahmad P / 2016 / Jasmonates: multifunctional roles in stress tolerance / Front Plant Sci 7:813
Aida M / 2004 / The PLETHORA genes mediate patterning of the Arabidopsis root stem cell niche / Cell 119(1):109~120
Benkova E / 2003 / Local, efflux-dependent auxin gradients as a common module for plant organ formation / Cell 115(5):591~602
Bishopp A / 2011 / A mutually inhibitory interaction between auxin and cytokinin specifies vascular pattern in roots / Curr Biol 21(11):917~926
Blilou I / 2005 / The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots / Nature 433(7021):39~44
Aida M / 2004 / The PLETHORA genes mediate patterning of the Arabidopsis root stem cell niche / Cell 119(1):109~120
Benkova E / 2003 / Local, efflux-dependent auxin gradients as a common module for plant organ formation / Cell 115(5):591~602
Bishopp A / 2011 / A mutually inhibitory interaction between auxin and cytokinin specifies vascular pattern in roots / Curr Biol 21(11):917~926
Blilou I / 2005 / The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots / Nature 433(7021):39~44
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