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

2012 ◽  
Vol 197 (1) ◽  
pp. 139-150 ◽  
Author(s):  
Weifeng Xu ◽  
Liguo Jia ◽  
Weiming Shi ◽  
Jiansheng Liang ◽  
Feng Zhou ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Root Growth ◽  
Auxin Transport ◽  
Root Tip ◽  
Proton Secretion ◽  
Acid Accumulation

Abscisic acid accumulation and carotenoid and chlorophyll content in relation to water stress and leaf age of different types of citrus

1990 ◽  
Vol 38 (6) ◽  
pp. 1326-1334 ◽  
Author(s):  
Shirley M. Norman ◽  
Vincent P. Maier ◽  
Darryl L. Pon
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Chlorophyll Content ◽  
Leaf Age ◽  
Different Types ◽  
Acid Accumulation

Hydrogen peroxide plays an important role in PERK4-mediated abscisic acid-regulated root growth in Arabidopsis

2019 ◽  
Vol 46 (2) ◽  
pp. 165 ◽  
Author(s):  
Xiaonan Ma ◽  
Xiaoran Zhang ◽  
Ling Yang ◽  
Mengmeng Tang ◽  
Kai Wang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Abscisic Acid ◽  
Root Growth ◽  
Primary Root ◽  
Root Tip ◽  
Exogenous Aba ◽  
Ros Accumulation ◽  
Primary Root Growth ◽  
Respiratory Burst Oxidase ◽  
Respiratory Burst Oxidase Homologue

Abscisic acid (ABA) is a crucial factor that affects primary root tip growth in plants. Previous research suggests that reactive oxygen species (ROS), especially hydrogen peroxide, are important regulators of ABA signalling in root growth of Arabidopsis. PROLINE-RICH EXTENSIN-LIKE RECEPTOR KINASE 4 (PERK4) plays an important role in ABA responses. Arabidopsis perk4 mutants display attenuated sensitivity to ABA, especially in primary root growth. To gain insights into the mechanism(s) of PERK4-associated ABA inhibition of root growth, in this study we investigated the involvement of ROS in this process. Normal ROS accumulation in the primary root in response to exogenous ABA treatment was not observed in perk4 mutants. PERK4 deficiency prohibits ABA-induced expression of RESPIRATORY BURST OXIDASE HOMOLOGUE (RBOH) genes, therefore the perk4-1 mutant showed decreased production of ROS in the root. The perk4-1/rbohc double mutant displayed the same phenotype as the perk4 and rbohc single mutants in response to exogenous ABA treatment. The results suggest that PERK4-stimulated ROS accumulation during ABA-regulated primary root growth may be mediated by RBOHC.

Abscisic Acid Accumulation in Detached Cereal Leaves in Response to Water Stress

1981 ◽  
Vol 101 (5) ◽  
pp. 439-446 ◽  
Author(s):  
S.A. Quarrie ◽  
I.E. Henson
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Acid Accumulation ◽  
Response To Water

Abscisic Acid Accumulation in Detached Cereal Leaves in Response to Water Stress

1981 ◽  
Vol 101 (5) ◽  
pp. 431-438 ◽  
Author(s):  
I.E. Henson ◽  
S.A. Quarrie
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Acid Accumulation ◽  
Response To Water

scholarly journals Abscisic Acid Accumulation by in Situ and Isolated Guard Cells of Pisum sativum L. and Vicia faba L. in Relation to Water Stress

1986 ◽  
Vol 81 (4) ◽  
pp. 1017-1021 ◽  
Author(s):  
Katrina Cornish ◽  
Jan A. D. Zeevaart
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Pisum Sativum ◽  
Vicia Faba ◽  
Guard Cells ◽  
Pisum Sativum L ◽  
Vicia Faba L ◽  
Acid Accumulation

scholarly journals Abscisic Acid Regulates the Root Growth Trajectory by Reducing Auxin Transporter PIN2 Protein Levels in Arabidopsis thaliana

2021 ◽  
Vol 12 ◽  
Author(s):  
Qijun Xie ◽  
Jemaa Essemine ◽  
Xiaochen Pang ◽  
Haiying Chen ◽  
Jing Jin ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Root Growth ◽  
Double Mutant ◽  
Auxin Transport ◽  
Growth Trajectory ◽  
Soil Conditions ◽  
Root Epidermis ◽  
Protein Levels ◽  
Hormonal Mechanism ◽  
Auxin Transporter

The root is in direct contact with soil. Modulation of root growth in response to alterations in soil conditions is pivotal for plant adaptation. Extensive research has been conducted concerning the adjustment of root elongation and architecture in response to environmental factors. However, little is known about the modulation of the root growth trajectory, as well as its hormonal mechanism. Here we report that abscisic acid (ABA) participated in controlling root growth trajectory. The roots upon ABA treatment or from ABA-accumulation double mutant cyp707a1,3 exhibit agravitropism-like growth pattern (wavy growth trajectory). The agravitropism-like phenotype is mainly ascribed to the compromised shootward transportation of auxin since we detected a reduced fluorescence intensity of auxin reporter DR5:VENUS in the root epidermis upon exogenous ABA application or in the endogenous ABA-accumulation double mutant cyp707a1,3. We then tried to decipher the mechanism by which ABA suppressed shootward auxin transport. The membrane abundance of PIN2, a facilitator of shootward auxin transport, was significantly reduced following ABA treatment and in cyp707a1,3. Finally, we revealed that ABA reduced the membrane PIN2 intensity through suppressing the PIN2 expression rather than accelerating PIN2 degradation. Ultimately, our results suggest a pivotal role for ABA in the root growth trajectory and the hormonal interactions orchestrating this process.

Sign in / Sign up

Export Citation Format

Share Document