Idioma:

Abscisic acid accumulation modulates auxin transport in the root tip to enhance proton secretion for maintaining root growth under moderate water stress

Xu, Weifeng ; Jia, Liguo ; Shi, Weiming ; Liang, Jiansheng ; Zhou, Feng ; Li, Qianfeng ; Zhang, Jianhua

The New phytologist, 2013-01, Vol.197 (1), p.139-150 [Periódico revisado por pares]

England: New Phytologist Trust

Texto completo disponível

Citações Citado por

Enviar para

Título:
Abscisic acid accumulation modulates auxin transport in the root tip to enhance proton secretion for maintaining root growth under moderate water stress
Autor: Xu, Weifeng ; Jia, Liguo ; Shi, Weiming ; Liang, Jiansheng ; Zhou, Feng ; Li, Qianfeng ; Zhang, Jianhua
Assuntos: ABA ; Abscisic acid ; Abscisic Acid - metabolism ; Abscisic Acid - pharmacology ; Accumulation ; Adaptation, Physiological ; Adenosine triphosphatase ; Arabidopsis - drug effects ; Arabidopsis - growth & development ; Arabidopsis - metabolism ; auxin transport ; Auxins ; Biological Transport ; Cell Membrane - enzymology ; Dehydration ; Dehydration - metabolism ; Drying ; Elongation ; Enzyme Activation ; Enzyme Assays ; Growth ; Hydrogen ; Hydroponics ; Hydroponics - methods ; Indoleacetic Acids - analysis ; Indoleacetic Acids - metabolism ; Membranes ; Modulation ; Oryza - drug effects ; Oryza - growth & development ; Oryza - metabolism ; Plant growth ; Plant roots ; Plant Roots - drug effects ; Plant Roots - growth & development ; Plant Roots - metabolism ; Plants ; plasma membrane H+‐ATPase ; Polyethylene ; Polyethylene glycol ; Polyethylene Glycols - pharmacology ; primary root growth ; proton secretion ; Proton-Translocating ATPases - metabolism ; Protons ; Rice ; Root cap ; Root growth ; root hair development ; Root hairs ; root tip ; Root tips ; Secretion ; Soil testing ; Stress, Physiological ; Transport ; Water ; Water - metabolism ; Water stress
É parte de: The New phytologist, 2013-01, Vol.197 (1), p.139-150
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: 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.
Editor: England: New Phytologist Trust
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Abscisic acid accumulation modulates auxin transport in the root tip to enhance proton secretion for maintaining root growth under moderate water stress

Xu, Weifeng ; Jia, Liguo ; Shi, Weiming ; Liang, Jiansheng ; Zhou, Feng ; Li, Qianfeng ; Zhang, Jianhua

England: New Phytologist Trust

Buscando em bases de dados remotas. Favor aguardar.