Glycinebetaine priming improves salt tolerance of wheat
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Karima H. A. Salama
und
Habebah A. Al-Malawi
Abstract
Salinity stress is one of the most serious environmental factors limiting plant growth and productivity in large areas around the world. Priming approach was adopted to study the effect of glycinebetaine (GB) on enhancing salt tolerance of sensitive wheat cultivar (Gomeza 7). The caryopsis were primed in different concentrations of GB (25, 50, 100 mM) for 24 h, and then treated with or without 150 mM NaCl added to 1/4-modified Hoagland solution (MHS). The NaCl treatment lasted 38 d under natural environmental conditions. Salt stress reduced all growth parameters measured: fresh mass, dry mass, relative growth rate, for the shoots and roots, and relative water content (RWC). Salt imposition increased the level of Na+ and Cl−, and reduced Ca+2 and K+ levels in both shoots and roots. Exogenous application of GB alleviated the deleterious effects of salinity on growth and mineral contents, the effect was more pronounced with 25 mM GB. Priming of caryopsis in GB counteracted the increase in the plasma membrane (PM) permeability and increased the cell solute potential, which was decreased by salinity. GB priming also increased the GB and glutathione concentrations, and reduced proline (Pro) as well as lipid peroxidation. Salt tolerance enhancement by GB priming might be occurred through reduced lipid peroxidation, increased GB and glutathione resulting in PM protection, and eventually ion homeostasis. The study is a valuable confirmation for enhancing salt adaptation via GB priming, which is of general interest for agriculture practices.
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Artikel in diesem Heft
- An overview of phytochrome: An important light switch and photo-sensory antenna for regulation of vital functioning of plants
- A novel GH13 subfamily of α-amylases with a pair of tryptophans in the helix α3 of the catalytic TIM-barrel, the LPDlx signature in the conserved sequence region V and a conserved aromatic motif at the C-terminus
- Biogenic synthesis of silver nanoparticles using cell-free extract of Bacillus safensis LAU 13: antimicrobial, free radical scavenging and larvicidal activities
- Understanding taxonomic position of local endemic Agropyron deweyi (Poaceae) using morphological characters and sequences of nuclear and chloroplast DNA regions
- Genetic status of the putative hybrid swarms of mountain dwarf pine and Scots pine in contact zones of their distribution in Slovakia
- Species delimitation and population structure in three Onosma (Boraginaceae) species
- Glycinebetaine priming improves salt tolerance of wheat
- The effect of nitrogen level on rice growth, carbon-nitrogen metabolism and gene expression
- High efficiency Agrobacterium-mediated transformation of Pinellia ternata using petiole explants from submerged cultures
- Cryopreservation of Serbian autochthonous Prunus spp. by droplet-vitrification
- Response of green hydra (Hydra viridissima) to variability and directional changes in food availability
- Data on some members of the family Tylenchidae (Nematoda: Tylenchina) from Iran
- New and firstly recorded oribatid mites from Turkey
- Reproductive parameters of four species of water mites (Acari: Hydrachnidia)
- A new species of the genus Aeolothrips (Thysanoptera: Aeolothripidae) from Iran
- Skull variability of mice and voles inhabiting the territory of a great cormorant colony
- High glucose-associated osmolality promotes adipocytogenic differentiation of primary rat osteoblasts in a protein kinase A and phosphatidylinositol 3-kinase/Akt-dependent manner
- Direct influence of rooibos-derived compound on rabbit ovarian functions and their response to gonadotropins
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