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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1111/nph.12004
|2 doi
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|a pubmed24n0740.xml
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|a (DE-627)NLM222183756
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|a (NLM)23106247
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Xu, Weifeng
|e verfasserin
|4 aut
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| 245 |
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|a Abscisic acid accumulation modulates auxin transport in the root tip to enhance proton secretion for maintaining root growth under moderate water stress
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 30.04.2013
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|a Date Revised 31.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.
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|a Maintenance of root growth is essential for plant adaptation to soil drying. Here, we tested the hypothesis that auxin transport is involved in mediating ABA's modulation by activating proton secretion in the root tip to maintain root growth under moderate water stress. Rice and Arabidopsis plants were raised under a hydroponic system and subjected to moderate water stress (-0.47 MPa) with polyethylene glycol (PEG). ABA accumulation, auxin transport and plasma membrane H(+)-ATPase activity at the root tip were monitored in addition to the primary root elongation and root hair density. We found that moderate water stress increases ABA accumulation and auxin transport in the root apex. Additionally, ABA modulation is involved in the regulation of auxin transport in the root tip. The transported auxin activates the plasma membrane H(+)-ATPase to release more protons along the root tip in its adaption to moderate water stress. The proton secretion in the root tip is essential in maintaining or promoting primary root elongation and root hair development under moderate water stress. These results suggest that ABA accumulation modulates auxin transport in the root tip, which enhances proton secretion for maintaining root growth under moderate water stress
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Indoleacetic Acids
|2 NLM
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|a Protons
|2 NLM
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|a Water
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|a 059QF0KO0R
|2 NLM
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|a Polyethylene Glycols
|2 NLM
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|a 3WJQ0SDW1A
|2 NLM
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|a Abscisic Acid
|2 NLM
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|a 72S9A8J5GW
|2 NLM
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|a Proton-Translocating ATPases
|2 NLM
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| 650 |
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|a EC 3.6.3.14
|2 NLM
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| 700 |
1 |
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|a Jia, Liguo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shi, Weiming
|e verfasserin
|4 aut
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| 700 |
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|a Liang, Jiansheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Feng
|e verfasserin
|4 aut
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| 700 |
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|a Li, Qianfeng
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jianhua
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 197(2013), 1 vom: 18. Jan., Seite 139-150
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:197
|g year:2013
|g number:1
|g day:18
|g month:01
|g pages:139-150
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|u http://dx.doi.org/10.1111/nph.12004
|3 Volltext
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|d 197
|j 2013
|e 1
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|c 01
|h 139-150
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