Aquaporins isoforms in cv. Touriga Nacional grapevine under water stress and recovery—Regulation of expression in leaves and roots

Zarrouk, Olfa; García-Tejero, Iván Francisco; Pinto, Clara A.; Genebra, Tânia; Sabir, Farzana; Prista, Catarina; David, Teresa S.; Loureiro-Dias, Maria C.; Chave, Maria Manuela

doi:10.1016/j.agwat.2015.08.013

Cited by 25 publications

(17 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Pou et al (2013) found in grapevine that the expression of TIP2;1 in the leaf was well-correlated to changes in g s during drought and rehydration. In Touriga Nacional grapevines, Zarrouk et al (2015) found that specific AQPs were downregulated in the roots of water stressed vines concurrent with decreases in Lp r , whereas the opposite trend was observed in the leaves: an upregulation of specific AQPs without changes in K leaf . In the present study, three of the AQPs examined (PIP1;1, PIP2;1, TIP2;1) were correlated with K leaf in both cultivars: they were down-regulated under WD conditions in Grenache and no changes were observed for Syrah following a similar response of K leaf in each cultivar (Figures 5C,E,G).…”

Section: Regulation Of Hydraulic Conductance By Aqps Under Mild Wdmentioning

confidence: 93%

Comparing Hydraulics Between Two Grapevine Cultivars Reveals Differences in Stomatal Regulation Under Water Stress and Exogenous ABA Applications

et al. 2020

View full text Add to dashboard Cite

Hydraulics of plants that have different strategies of stomatal regulation under water stress are relatively poorly understood. We explore how root and shoot hydraulics, stomatal conductance (g s), leaf and root aquaporin (AQP) expression, and abscisic acid (ABA) concentration in leaf xylem sap ([ABA] xylemsap) may be coordinated under mild water stress and exogenous ABA applications in two Vitis vinifera L. cultivars traditionally classified as near-isohydric (Grenache) and near-anisohydric (Syrah). Under water stress, Grenache exhibited stronger adjustments of plant and root hydraulic conductances and greater stomatal sensitivity to [ABA] xylemsap than Syrah resulting in greater conservation of soil moisture but not necessarily more isohydric behavior. Correlations between leaf (leaf) and predawn (PD) water potentials between cultivars suggested a "hydrodynamic" behavior rather than a particular iso-anisohydric classification. A significant decrease of leaf in well-watered ABA-fed vines supported a role of ABA in the soil-leaf hydraulic pathway to regulate g s. Correlations between leaf and root AQPs expression levels under water deficit could explain the response of leaf (K leaf) and root (Lp r) hydraulic conductances in both cultivars. Additional studies under a wider range of soil water deficits are required to explore the possible differential regulation of g s and plant hydraulics in different cultivars and experimental conditions.

show abstract

Section: Regulation Of Hydraulic Conductance By Aqps Under Mild Wdmentioning

confidence: 93%

Comparing Hydraulics Between Two Grapevine Cultivars Reveals Differences in Stomatal Regulation Under Water Stress and Exogenous ABA Applications

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Aquaporins are thought to be the main pathway for water movement through the cell membranes (Maurel et al, 2015), providing the capacity of rapidly modify membrane water permeability, which help the plant with the maintenance of the water balance during stress episodes, and affecting root hydraulic conductivity (Hachez et al, 2012;Hachez, Moshelion, Zelazny, Cavez, & Chaumont, 2006;Maurel, Verdoucq, Luu, & Santoni, 2008;Moshelion et al, 2009;Zarrouk et al, 2016). Among higher plant aquaporins, the plasma membrane intrinsic proteins (PIPs) and the tonoplast intrinsic proteins (TIPs) have been highlighted for their involvement in the control of radial transcellular water transport and also of cell osmoregulation, and in general, PIP and TIP aquaporin expression seems to be more abundant in roots than in leaves (Chaumont & Tyerman, 2014).…”

Section: Introductionmentioning

confidence: 99%

The arbuscular mycorrhizal symbiosis regulates aquaporins activity and improves root cell water permeability in maize plants subjected to water stress

Quiroga

Erice

Ding

et al. 2019

Plant Cell & Environment

View full text Add to dashboard Cite

Studies have suggested that increased root hydraulic conductivity in mycorrhizal roots could be the result of increased cell‐to‐cell water flux via aquaporins. This study aimed to elucidate if the key effect of the regulation of maize aquaporins by the arbuscular mycorrhizal (AM) symbiosis is the enhancement of root cell water transport capacity. Thus, water permeability coefficient (Pf) and cell hydraulic conductivity (Lpc) were measured in root protoplast and intact cortex cells of AM and non‐AM plants subjected or not to water stress. Results showed that cells from droughted‐AM roots maintained Pf and Lpc values of nonstressed plants, whereas in non‐AM roots, these values declined drastically as a consequence of water deficit. Interestingly, the phosphorylation status of PIP2 aquaporins increased in AM plants subjected to water deficit, and Pf values higher than 12 μm s−1 were found only in protoplasts from AM roots, revealing the higher water permeability of AM root cells. In parallel, the AM symbiosis increased stomatal conductance, net photosynthesis, and related parameters, showing a higher photosynthetic capacity in these plants. This study demonstrates a better performance of AM root cells in water transport under water deficit, which is connected to the shoot physiological performance in terms of photosynthetic capacity.

show abstract

“…Consequently, plant tolerance to water stress and the potential for tissue rehydration are two critical traits that underlie a plant's ability to survive temporal disparity in water demand and supply. Although stress tolerance is a primary focus of multiple studies, the physiology of recovery has received much less attention (e.g., Galmés, Flexas, Savé, & Medrano , Zarrouk et al, , Skelton, Brodribb, McAdam, & Mitchell, ). Recovery from water stress (either mild or severe) depends on a plant's ability to rehydrate dehydrated tissues when transpirational demand is lower than the effective water supply, which may occur at night or during and after precipitation events.…”

Section: Introductionmentioning

confidence: 99%

Insight into the physiological role of water absorption via the leaf surface from a rehydration kinetics perspective

Guzmán‐Delgado

Zwieniecki

2018

Plant Cell & Environment

View full text Add to dashboard Cite

Soil water transported via the petiole is a primary rehydration pathway for leaves of water-stressed plants. Leaves may also rehydrate by absorbing water via their epidermal surfaces. The mechanisms and physiological relevance of this water pathway, however, remain unclear, as the associated hydraulic properties are unknown. To gain insight into the foliar water absorption process, we compared rehydration kinetics via the petiole and surface of Prunus dulcis and Quercus lobata leaves. Petiole rehydration could be described by a double exponential function suggesting that 2 partly isolated water pools exist in leaves of both species. Surface rehydration could be described by a logistic function, suggesting that leaves behave as a single water pool. Whereas full leaf rehydration via the petiole required approximately 20 min, it took over 150 and 300 min via the surface of P. dulcis and Q. lobata, respectively. Such differences were attributed to the high resistance imposed by the leaf surface and especially the cuticle. The minimum resistance to surface rehydration was estimated to be 6.6 × 10 (P. dulcis) and 2.6 × 10 MPa·m ·s·g (Q. lobata), which is remarkably higher than estimated for petiole rehydration. These results are discussed in a physiological context.

show abstract

Aquaporins isoforms in cv. Touriga Nacional grapevine under water stress and recovery—Regulation of expression in leaves and roots

Cited by 25 publications

References 57 publications

Comparing Hydraulics Between Two Grapevine Cultivars Reveals Differences in Stomatal Regulation Under Water Stress and Exogenous ABA Applications

Comparing Hydraulics Between Two Grapevine Cultivars Reveals Differences in Stomatal Regulation Under Water Stress and Exogenous ABA Applications

The arbuscular mycorrhizal symbiosis regulates aquaporins activity and improves root cell water permeability in maize plants subjected to water stress

Insight into the physiological role of water absorption via the leaf surface from a rehydration kinetics perspective

Contact Info

Product

Resources

About