Drought activates MYB41 orthologs and induces suberization of grapevine fine roots

Zhang, Li; Merlin, Isabelle; Pascal, Stéphanie; Bert, Pierre‐François; Domergue, Frédéric; Gambetta, Grégory A.

doi:10.1002/pld3.278

Cited by 22 publications

(14 citation statements)

References 71 publications

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“…The suberin deficient mutant cyp86a1 is salt-sensitive compared with the wild-type and accumulates more Na + ions ( Wang et al, 2020a ). The most well-described TFs controlling suberization belong to the MYB family ( Baldoni et al, 2015 ; Zhang et al, 2020a ). MYB41 is upregulated by drought stress, salt stress and ABA, and stimulates suberin biosynthesis and deposition in Arabidopsis and grapevine.…”

Section: Tropisms and Root Branchingmentioning

confidence: 99%

Root plasticity under abiotic stress

et al. 2021

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Abiotic stresses increasingly threaten existing ecological and agricultural systems across the globe. Plant roots perceive these stresses in the soil and adapt their architecture accordingly. This review provides insights into recent discoveries showing the importance of root system architecture and plasticity for the survival and development of plants under heat, cold, drought, salt, and flooding stress. In addition, we review the molecular regulation and hormonal pathways involved in controlling root system architecture plasticity, main root growth, branching and lateral root growth, root hair development and formation of adventitious roots. Several stresses affect root anatomy by causing aerenchyma formation, lignin and suberin deposition, and Casparian strip modulation. Roots can also actively grow towards favourable soil conditions and avoid environments detrimental to their development. Recent advances in understanding the cellular mechanisms behind these different root tropisms are discussed. Understanding root plasticity will be instrumental for the development of crops that are resilient in the face of abiotic stress.

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Section: Tropisms and Root Branchingmentioning

confidence: 99%

Root plasticity under abiotic stress

et al. 2021

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“…Heat and drought showed different effects on plants when applied alone [ 3 , 4 ], and opposite effects were described specifically for root growth [ 5 ]. In contrast, heat and drought alone have shown similar effects concerning suberization, with increasing suberization being detected in several plant species and organs when individual stresses are applied [ 17 , 19 , 26 , 27 ]. Thus, it is of great importance to study the effect of abiotic stress in suberization, considering the root anatomy and developmental stage, to better understand the influence of suberized barriers in adaptation to stress.…”

Section: Discussionmentioning

confidence: 99%

“…Enhanced suberization in modern cultivars significantly reduces radial water transport, whereas wild accession can keep the water transport constant, in combination with other adaptation mechanisms [ 21 ]. Increased suberin deposition in roots, often with upregulation of suberin biosynthesis genes, was also found in response to drought in grapevine [ 26 ], rice [ 17 ] and Arabidopsis [ 19 , 27 ]. Plasticity in root suberization may act to reduce water leakage from xylem and/or minimize excessive salt penetration into the stele and accumulation at toxic concentrations.…”

Section: Introductionmentioning

confidence: 99%

The Combined Effect of Heat and Osmotic Stress on Suberization of Arabidopsis Roots

Leal

Belo

Beeckman

et al. 2022

Cells

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The simultaneous occurrence of heat stress and drought is becoming more regular as a consequence of climate change, causing extensive agricultural losses. The application of either heat or osmotic stress increase cell-wall suberization in different tissues, which may play a role in improving plant resilience. In this work, we studied how the suberization process is affected by the combination of drought and heat stress by following the expression of suberin biosynthesis genes, cell-wall suberization and the chemical composition in Arabidopsis roots. The Arabidopsis plants used in this study were at the onset of secondary root development. At this point, one can observe a developmental gradient in the main root, with primary development closer to the root tip and secondary development, confirmed by the suberized phellem, closer to the shoot. Remarkably, we found a differential response depending on the root zone. The combination of drought and heat stress increased cell wall suberization in main root segments undergoing secondary development and in lateral roots (LRs), while the main root zone, at primary development stage, was not particularly affected. We also found differences in the overall chemical composition of the cell walls in both root zones in response to combined stress. The data gathered showed that, under combined drought and heat stress, Arabidopsis roots undergo differential cell wall remodeling depending on developmental stage, with modifications in the biosynthesis and/or assembly of major cell wall components.

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“…Since the peridermal transpiration of these potatoes increased, these results show that StKCS6 is involved in the synthesis of monomers with 28 carbon atoms or more and that these VLCFAs and derivatives are important for suberin to function as hydrophobic barrier. Suberin is important for regulating water and nutrients absorption in roots, and several studies reported that suberization is induced under drought or waterlogging conditions [ 97 , 98 , 99 ]. Nevertheless, suberin is not only produced by plants in response to abiotic stress since ectopic suberization in the cell layers surrounding infection and feeding sites of cyst and root-knot nematodes has been reported [ 100 ].…”

Section: Vlcfa-derived Surface Lipids Constitute the Border Between Plants And Its Surrounding Environmentmentioning

confidence: 99%

Biosynthesis and Functions of Very-Long-Chain Fatty Acids in the Responses of Plants to Abiotic and Biotic Stresses

Batsale

Bahammou

Fouillen

et al. 2021

Cells

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118

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Very-long-chain fatty acids (i.e., fatty acids with more than 18 carbon atoms; VLCFA) are important molecules that play crucial physiological and structural roles in plants. VLCFA are specifically present in several membrane lipids and essential for membrane homeostasis. Their specific accumulation in the sphingolipids of the plasma membrane outer leaflet is of primordial importance for its correct functioning in intercellular communication. VLCFA are found in phospholipids, notably in phosphatidylserine and phosphatidylethanolamine, where they could play a role in membrane domain organization and interleaflet coupling. In epidermal cells, VLCFA are precursors of the cuticular waxes of the plant cuticle, which are of primary importance for many interactions of the plant with its surrounding environment. VLCFA are also major components of the root suberin barrier, which has been shown to be fundamental for nutrient homeostasis and plant adaptation to adverse conditions. Finally, some plants store VLCFA in the triacylglycerols of their seeds so that they later play a pivotal role in seed germination. In this review, taking advantage of the many studies conducted using Arabidopsis thaliana as a model, we present our current knowledge on the biosynthesis and regulation of VLCFA in plants, and on the various functions that VLCFA and their derivatives play in the interactions of plants with their abiotic and biotic environment.

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Drought activates MYB41 orthologs and induces suberization of grapevine fine roots

Abstract: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Cited by 22 publications

References 71 publications

Root plasticity under abiotic stress

Root plasticity under abiotic stress

The Combined Effect of Heat and Osmotic Stress on Suberization of Arabidopsis Roots

Biosynthesis and Functions of Very-Long-Chain Fatty Acids in the Responses of Plants to Abiotic and Biotic Stresses

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