Plant Group II LEA Proteins: Intrinsically Disordered Structure for Multiple Functions in Response to Environmental Stresses
Autor: | Khaled Masmoudi, Sangeeta Kutty Mullath, Miloofer Sabeem, Faiçal Brini, Mughair Abdul Aziz |
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Rok vydání: | 2021 |
Předmět: |
group II LEA protein
abiotic stress hydrophilins Defence mechanisms Review Biology Intrinsically disordered proteins Microbiology Biochemistry chemistry.chemical_compound Gene Expression Regulation Plant Stress Physiological Gene expression dehydrins Molecular Biology Gene Abscisic acid Plant Proteins Abiotic stress Plant cell QR1-502 In vitro Cell biology chemistry gene expression Genome-Wide Association Study |
Zdroj: | Biomolecules Biomolecules, Vol 11, Iss 1662, p 1662 (2021) |
ISSN: | 2218-273X |
Popis: | In response to various environmental stresses, plants have evolved a wide range of defense mechanisms, resulting in the overexpression of a series of stress-responsive genes. Among them, there is certain set of genes that encode for intrinsically disordered proteins (IDPs) that repair and protect the plants from damage caused by environmental stresses. Group II LEA (late embryogenesis abundant) proteins compose the most abundant and characterized group of IDPs; they accumulate in the late stages of seed development and are expressed in response to dehydration, salinity, low temperature, or abscisic acid (ABA) treatment. The physiological and biochemical characterization of group II LEA proteins has been carried out in a number of investigations because of their vital roles in protecting the integrity of biomolecules by preventing the crystallization of cellular components prior to multiple stresses. This review describes the distribution, structural architecture, and genomic diversification of group II LEA proteins, with some recent investigations on their regulation and molecular expression under various abiotic stresses. Novel aspects of group II LEA proteins in Phoenix dactylifera and in orthodox seeds are also presented. Genome-wide association studies (GWAS) indicated a ubiquitous distribution and expression of group II LEA genes in different plant cells. In vitro experimental evidence from biochemical assays has suggested that group II LEA proteins perform heterogenous functions in response to extreme stresses. Various investigations have indicated the participation of group II LEA proteins in the plant stress tolerance mechanism, spotlighting the molecular aspects of group II LEA genes and their potential role in biotechnological strategies to increase plants’ survival in adverse environments. |
Databáze: | OpenAIRE |
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