Maintenance of Cell Wall Integrity under High Salinity

Abstract

Cell wall biosynthesis is a complex biological process in plants. In the rapidly growing cells or in the plants that encounter a variety of environmental stresses, the compositions and the structure of cell wall can be dynamically changed. To constantly monitor cell wall status, plants have evolved cell wall integrity (CWI) maintenance system, which allows rapid cell growth and improved adaptation of plants to adverse environmental conditions without the perturbation of cell wall organization. Salt stress is one of the abiotic stresses that can severely disrupt CWI, and studies have shown that the ability of plants to sense and maintain CWI is important for salt tolerance. In this review, we highlight the roles of CWI in salt tolerance and the mechanisms underlying the maintenance of CWI under salt stress. The unsolved questions regarding the association between the CWI and salt tolerance are discussed.

A Multi-Level Iterative Bi-Clustering Method for Discovering miRNA Co-regulation Network of Abiotic Stress Tolerance in Soybeans

“…In addition to plant positive regulation of development and defense response, GO functions such as cell wall organization also produce different response mechanisms under abiotic stresses. For example, salt stress disrupts cell walls integrity ( Liu et al, 2021 ), and cell walls are adaptively regulate under drought stress ( Moore et al, 2008 ). Moreover, plants reduce gibberellin production to reduce growth in order to concentrate energy against stress ( Colebrook et al, 2014 ), sweet briar rose ( Rosa rubiginosa L.) adapts to drought conditions by regulating gibberellin ( Gadzinowska et al, 2020 ), and pea seeds adapt to heat stress by reducing gibberellin production ( Leitão and Enguita, 2016 ), Gibberellin in A. thaliana is activated in a low-salt environment ( Liu et al, 2013 ).…”

Maternal salinity influences anatomical parameters, pectin content, biochemical and genetic modifications of two Salicornia europaea populations under salt stress

“…For instance, Uddin et al 39 indicate that under stress conditions the concentration of methylated pectic epitopes tends to drop, especially for those species that are less tolerant to salt stress. Meanwhile, Liu et al 40 indicate that the degree and pattern of the methyl-esterification of pectin to some extent determines the stiffness of cell walls and, with this, the tolerance to salinity. In the same study it is stated that the overexpression of the gene ( AtPMEI13 ) that causes a decrease in pectin methylesterified enzyme activity in Arabidopsis enhances the total levels of methyl-esterification pectins, which was reflected in an improvement in seed germination and survival growth rate under salt stress.…”

Developing climate‐resilient crops: improving plant tolerance to stress combination

“…For example, the receptor-like kinase THESEUS1 (THE1) senses changes in cell wall integrity and link these changes to defense response activation. In addition to its role in defense responses, THE1 is also involved in controlling root growth under salt stress (Liu et al, 2021;Saijo and Loo, 2020), highlighting the possibility that this RLK could mediate the integration of different abiotic and biotic stresses. Another RLK with potential roles in both abiotic and biotic signaling is LysM.…”