Tripartite hormonal regulation of plasma membrane H+-ATPase activity

Miao, Rui; Russinova, Eugenia; Rodrı́guez, Pedro L.

doi:10.1016/j.tplants.2021.12.011

Cited by 29 publications

(23 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. whether this interaction is enough to phosphorylate and activate these H + -ATPases (Miao et al, 2018(Miao et al, , 2022Yuan et al, 2018). Remarkably, little is known about how BRs can modify the pH apo in root cells and further investigation in this direction will be necessary for the coming years.…”

Section: Plants Hormones and Ph Apomentioning

confidence: 99%

“…Organic acids produce changes in soil pH increasing nutrient availability (Liu et al, 2022 ) and might contribute to microbial growth, which together with root respiration, will produce CO 2 with a strong influence on plant biology in alkaline soils (Hinsinger et al, 2003 ). Overall, the plant mechanisms to modify pH apo have a critical role under stress conditions, such as high salinity or drought (Miao et al, 2022 ).…”

Section: Plant Mechanisms To Modify the Root Ph Apomentioning

confidence: 99%

See 1 more Smart Citation

The root apoplastic pH as an integrator of plant signaling

2022

View full text Add to dashboard Cite

Plant nutrition, growth, and response to environmental stresses are pH-dependent processes that are regulated at the apoplastic and subcellular levels. The root apoplastic pH is especially sensitive to external cues and can also be modified by intracellular inputs, such as hormonal signaling. Optimal crosstalk of the mechanisms involved in the extent and span of the apoplast pH fluctuations promotes plant resilience to detrimental biotic and abiotic factors. The fact that variations in local pHs are a standard mechanism in different signaling pathways indicates that the pH itself can be the pivotal element to provide a physiological context to plant cell regions, allowing a proportional reaction to different situations. This review brings a collective vision of the causes that initiate root apoplastic pHs variations, their interaction, and how they influence root response outcomes.

show abstract

Section: Plants Hormones and Ph Apomentioning

confidence: 99%

Section: Plant Mechanisms To Modify the Root Ph Apomentioning

confidence: 99%

The root apoplastic pH as an integrator of plant signaling

2022

View full text Add to dashboard Cite

show abstract

“…It is noteworthy that LRFR also leads to IAA production and a strong auxin response (Michaud et al 2017; Pantazopoulou et al 2017). While ABA inhibits H + ATPases, auxin activates these proton pumps (Miao et al 2022). Hence, we hypothesize that in LRFR the correct balance between IAA and ABA-regulated water movements is required to control leaf positioning.…”

Section: Discussionmentioning

confidence: 99%

Abscisic Acid modulates neighbor proximity-induced leaf hyponasty in Arabidopsis

Michaud¹,

Krahmer²,

Galbier

et al. 2022

Preprint

View full text Add to dashboard Cite

Leaves of shade avoiding plants like Arabidopsis thaliana change their growth pattern and position in response to a low red to far-red ratio (LRFR) that is encountered in dense plant communities. In LRFR, transcription factors of the phytochrome interacting family (PIFs) are de-repressed. PIFs induce auxin production, which is required to promote leaf hyponasty thereby favoring access to unfiltered sunlight. Abscisic acid (ABA) has also been implicated in the control of leaf hyponasty. In addition, gene expression patterns suggest that LRFR regulates the ABA response. Here we show that, in leaves, LRFR leads to a rapid increase in ABA levels. Changes in ABA levels depend on PIFs, which regulate the expression of genes encoding isoforms of the enzyme catalyzing a rate-limiting step in ABA biosynthesis. Interestingly, ABA biosynthesis and signaling mutants have more erect leaves in white light but respond less to LRFR. Consistent with this, ABA application decreases the leaf angle in white light but this response is inhibited in LRFR. Tissue-specific interference with ABA signaling indicates that an ABA response is required in different cell types for LRFR-induced hyponasty. Collectively, our data indicate LRFR triggers rapid PIF-mediated ABA production. ABA plays a different role in controlling hyponasty in white light compared to LRFR. Moreover, ABA exerts its activity in multiple cell types to control leaf position.

show abstract

“…Hydrotropism is a root tropic response in which roots grow toward an area with higher water potentials [ 1 ]. Recent articles reported that phytohormones such as abscisic acid (ABA), brassinosteroids (BRs), and cytokinins (CKs) participate in regulating root hydrotropism in Arabidopsis [ 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. The stress hormone ABA plays an important role in response to water stress, and the ABA signalosome (PYR/PYL/RCAR-PP2Cs-SnRK2s) is involved in root hydrotropic responses in Arabidopsis [ 2 , 3 , 6 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Katanin-Dependent Microtubule Ordering in Association with ABA Is Important for Root Hydrotropism

Miao

Siao

Zhang

et al. 2022

IJMS

Self Cite

View full text Add to dashboard Cite

Root hydrotropism refers to root directional growth toward soil moisture. Cortical microtubule arrays are essential for determining the growth axis of the elongating cells in plants. However, the role of microtubule reorganization in root hydrotropism remains elusive. Here, we demonstrate that the well-ordered microtubule arrays and the microtubule-severing protein KATANIN (KTN) play important roles in regulating root hydrotropism in Arabidopsis. We found that the root hydrotropic bending of the ktn1 mutant was severely attenuated but not root gravitropism. After hydrostimulation, cortical microtubule arrays in cells of the elongation zone of wild-type (WT) Col-0 roots were reoriented from transverse into an oblique array along the axis of cell elongation, whereas the microtubule arrays in the ktn1 mutant remained in disorder. Moreover, we revealed that abscisic acid (ABA) signaling enhanced the root hydrotropism of WT and partially rescued the oryzalin (a microtubule destabilizer) alterative root hydrotropism of WT but not ktn1 mutants. These results suggest that katanin-dependent microtubule ordering is required for root hydrotropism, which might work downstream of ABA signaling pathways for plant roots to search for water.

show abstract

Tripartite hormonal regulation of plasma membrane H+-ATPase activity

Cited by 29 publications

References 117 publications

The root apoplastic pH as an integrator of plant signaling

The root apoplastic pH as an integrator of plant signaling

Abscisic Acid modulates neighbor proximity-induced leaf hyponasty in Arabidopsis

Katanin-Dependent Microtubule Ordering in Association with ABA Is Important for Root Hydrotropism

Contact Info

Product

Resources

About