The ethylene pathway contributes to root hair elongation induced by the beneficial bacteria Phyllobacterium brassicacearum STM196

被引：40

作者：

Galland, Marc ^{[1
]}

Gamet, Lydia ^{[1
]}

Varoquaux, Fabrice ^{[1
]}

Touraine, Brigitte ^{[2
]}

Touraine, Bruno ^{[1
]}

Desbrosses, Guilhem ^{[1
]}

机构：

[1] Univ Montpellier, Inst Natl Rech Agron, Univ Montpellier 2, Inst Rech Dev,Lab Trop Symbiosis,Cirad,UMR113,Mon, F-34095 Montpellier 5, France

[2] Univ Montpellier 2, Inst Natl Rech Agron, Ctr Natl Rech Sci, Biochem & Plant Mol Physiol UMR5004,IBIP,Montpell, F-34060 Montpellier 2, France

来源：

PLANT SCIENCE | 2012年 / 190卷

关键词：

Arabidopsis; Root hairs; Ethylene; Plant growth promoting rhizobacteria; GROWTH-PROMOTING RHIZOBACTERIA; F-BOX PROTEINS; ARABIDOPSIS-THALIANA; RESPONSE PATHWAY; INDOLE-3-ACETIC-ACID PRODUCTION; INSENSITIVE MUTANTS; SYSTEMIC RESISTANCE; NEGATIVE REGULATOR; INDOLEACETIC-ACID; ACC DEAMINASE;

D O I：

10.1016/j.plantsci.2012.03.008

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In Arabidopsis roots, some epidermal cells differentiate into root hair cells. Auxin regulates root hair positioning, while ethylene controls cell elongation. Phyllobacterium brassicacearum STM196, a beneficial strain of plant growth promoting rhizobacteria (PGPR) isolated from the roots of field-grown oilseed rape, stimulates root hair elongation in Arabidopsis thaliana seedlings. We investigated the role of ethylene in the response of root hair cells to STM196 inoculation. While we could not detect a significant increase in ethylene biosynthesis, we could detect a slight activation of the ethylene signalling pathway. Consistent with this, an exhaustive survey of the root hair elongation response of mutants and transgenic lines affected in the ethylene pathway showed contrasting root hair sensitivities to STM196. We propose that local ethylene emission contributes to STM196-induceed root hair elongation. (C) 2012 Elsevier Ireland Ltd. All rights reserved.

引用

页码：74 / 81

页数：8

共 4 条

[1] Arabidopsis Growth-Promotion and Root Architecture Responses to the Beneficial Rhizobacterium Phyllobacterium brassicacearum Strain STM196 Are Independent of the Nitrate Assimilatory Pathway
Kechid, Maya
Desbrosses, Guilhem
Gamet, Lydia
Castaings, Loren
Varoquaux, Fabrice
Djekoun, Abdelhamid
Touraine, Bruno
[J]. PLANTS-BASEL, 2022, 11 (01):
[2] The PGPR strain Phyllobacterium brassicacearum STM196 induces a reproductive delay and physiological changes that result in improved drought tolerance in Arabidopsis
Bresson, Justine
Varoquaux, Fabrice
Bontpart, Thibaut
Touraine, Bruno
Vile, Denis
[J]. NEW PHYTOLOGIST, 2013, 200 (02) : 558 - 569
[3] The NRT2.5 and NRT2.6 genes are involved in growth promotion of Arabidopsis by the plant growth-promoting rhizobacterium (PGPR) strain Phyllobacterium brassicacearum STM196
Kechid, Maya
Desbrosses, Guilhem
Rokhsi, Wafaa
Varoquaux, Fabrice
Djekoun, Abdelhamid
Touraine, Bruno
[J]. NEW PHYTOLOGIST, 2013, 198 (02) : 514 - 524
[4] An ethylene and ROS-dependent pathway is involved in low ammonium-induced root hair elongation in Arabidopsis seedlings
Zhu, Changhua
Yang, Na
Guo, Zhengfei
Qian, Meng
Gan, Lijun
[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY, 2016, 105 : 37 - 44

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