Promotion and Upregulation of a Plasma Membrane Proton-ATPase Strategy: Principles and Applications

Ren, Zirong; Suolang, Bazhen; Fujiwara, Tadashi; Yang, Dan; Saijo, Yusuke; Kinoshita, Toshinori; Wang, Yin

doi:10.3389/fpls.2021.749337

Cited by 4 publications

(4 citation statements)

References 88 publications

(123 reference statements)

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“…A major effect of this overexpression is stimulation of the hydraulic mechanism that drives the opening of the stomatal pores that facilitate CO 2 uptake. Improved stomatal conductance leads to increased photosynthetic rates and results in increased biomass; for this reason, the potential of PM H + -ATPase to increase plant production via genetic modification has been proposed 6 .…”

Section: Introductionmentioning

confidence: 99%

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The evolution of plant proton pump regulation via the R domain may have facilitated plant terrestrialization

et al. 2022

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Plasma membrane (PM) H+-ATPases are the electrogenic proton pumps that export H+ from plant and fungal cells to acidify the surroundings and generate a membrane potential. Plant PM H+-ATPases are equipped with a C‑terminal autoinhibitory regulatory (R) domain of about 100 amino acid residues, which could not be identified in the PM H+-ATPases of green algae but appeared fully developed in immediate streptophyte algal predecessors of land plants. To explore the physiological significance of this domain, we created in vivo C-terminal truncations of autoinhibited PM H+‑ATPase2 (AHA2), one of the two major isoforms in the land plant Arabidopsis thaliana. As more residues were deleted, the mutant plants became progressively more efficient in proton extrusion, concomitant with increased expansion growth and nutrient uptake. However, as the hyperactivated AHA2 also contributed to stomatal pore opening, which provides an exit pathway for water and an entrance pathway for pests, the mutant plants were more susceptible to biotic and abiotic stresses, pathogen invasion and water loss, respectively. Taken together, our results demonstrate that pump regulation through the R domain is crucial for land plant fitness and by controlling growth and nutrient uptake might have been necessary already for the successful water-to-land transition of plants.

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Section: Introductionmentioning

confidence: 99%

“…Eleven isoforms of PM H + -ATPases, termed AUTOINHIBITED H + -ATPASE [1][2][3][4][5][6][7][8][9][10][11], are encoded in the genome of the model plant Arabidopsis thaliana 7 . Among the 11 gene family members, AHA1 and AHA2 are the most highly expressed 8 .…”

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confidence: 99%

The evolution of plant proton pump regulation via the R domain may have facilitated plant terrestrialization

et al. 2022

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“…This adds to the intrigue in the signalling response, and possible answers can be found when we can characterize the full complement of guard cell signalling sensors [ 26 , 27 , 28 , 29 , 30 ]. The role of guard cell chloroplasts in regulating CO 2 has also been extensively studied; they are not directly involved in the control of stomatal closure as induced by CO 2 , as it is controlled by the conversion of CO 2 to protons by carbonic anhydrases with HCO 3 being the primary signalling molecules bringing about changes in the proton concentration, and as a result, controlling the opening and closure of the stomata [ 31 , 32 , 33 , 34 ].…”

Section: Water Relations Transpiration and Stomatal Conductancementioning

confidence: 99%

Elevated CO2 and Water Stress in Combination in Plants: Brothers in Arms or Partners in Crime?

Shanker

Gunnapaneni

Bhanu

et al. 2022

Biology

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The changing dynamics in the climate are the primary and important determinants of agriculture productivity. The effects of this changing climate on overall productivity in agriculture can be understood when we study the effects of individual components contributing to the changing climate on plants and crops. Elevated CO2 (eCO2) and drought due to high variability in rainfall is one of the important manifestations of the changing climate. There is a considerable amount of literature that addresses climate effects on plant systems from molecules to ecosystems. Of particular interest is the effect of increased CO2 on plants in relation to drought and water stress. As it is known that one of the consistent effects of increased CO2 in the atmosphere is increased photosynthesis, especially in C3 plants, it will be interesting to know the effect of drought in relation to elevated CO2. The potential of elevated CO2 ameliorating the effects of water deficit stress is evident from literature, which suggests that these two agents are brothers in arms protecting the plant from stress rather than partners in crime, specifically for water deficit when in isolation. The possible mechanisms by which this occurs will be discussed in this minireview. Interpreting the effects of short-term and long-term exposure of plants to elevated CO2 in the context of ameliorating the negative impacts of drought will show us the possible ways by which there can be effective adaption to crops in the changing climate scenario.

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“…This adds to the intrigue in the signalling response and possible answers can be found when we can characterize the full complement of guard cell signalling sensors [26][27][28][29][30]. The role of guard cell chloroplasts in regulating CO2 has also been extensively studied, they are not directly involved in the control of stomatal closure as induced by CO2, it is controlled by the conversion of CO2 to protons by carbonic anhydrases with HCO3 being the primary signalling molecules bringing about changes in the proton concentration and as a result, controlling the opening and closure of the stomata [31][32][33][34].…”

Section: The Aba Conundrummentioning

confidence: 99%

Elevated CO<sub>2</sub> and Water Stress in Combination in Plants: Brothers in Arms or Partners in Crime?

Shanker¹,

Gunnapaneni²,

Bhanu³

et al. 2022

Preprint

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The changing dynamics in climate is the primary and important determinant of agriculture productivity. The effects of this changing climate on overall productivity in agriculture can be understood when we study the effects of individual components contributing to the changing climate on plants and crops. Elevated CO2 (eCO2) and drought due to high variability in rainfall is one of the important manifestations of the changing climate. There is a considerable amount of literature that addresses climate effects on plant systems from molecules to ecosystems. Of particular interest is the effect of increased CO2 on plants in relation to drought and water stress. As it is known that one of the consistent effects of increased CO2 in the atmosphere is increased photosynthesis, especially in C3 plants, it will be interesting to know the effect of drought in relation to elevated CO2. The potential of elevated CO2 ameliorating the effects of water deficit stress is evident from literature suggesting that these two are agents are brothers in arms protecting the plant from stress rather than partnering in crime, specifically water deficit when in isolation. The possible mechanisms by which this occurs will be discussed in this minireview. Interpreting the effects of short-term and long-term exposure of plants to elevated CO2 in the context of ameliorating the negative impacts of drought will show us the possible ways by which there can be effective adaption to crops in the changing climate scenario.

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Promotion and Upregulation of a Plasma Membrane Proton-ATPase Strategy: Principles and Applications

Cited by 4 publications

References 88 publications

The evolution of plant proton pump regulation via the R domain may have facilitated plant terrestrialization

The evolution of plant proton pump regulation via the R domain may have facilitated plant terrestrialization

Elevated CO2 and Water Stress in Combination in Plants: Brothers in Arms or Partners in Crime?

Elevated CO<sub>2</sub> and Water Stress in Combination in Plants: Brothers in Arms or Partners in Crime?

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