scholarly journals Silicon and water-deficit stress differentially modulate physiology and ultrastructure in wheat (Triticum aestivum L.)

3 Biotech ◽  
2017 ◽  
Vol 7 (4) ◽  
Author(s):  
Ling Xu ◽  
Faisal Islam ◽  
Basharat Ali ◽  
Zengfei Pei ◽  
Juanjuan Li ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Water Deficit ◽  
Triticum Aestivum L ◽  
Water Deficit Stress

Effect of water deficit on accumulation of proteins in wheatseedlings correlates with grain filling

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
S. K. Thind ◽  
Maryada Sharma
Keyword(s):  
Triticum Aestivum ◽  
Water Stress ◽  
Water Deficit ◽  
Developmental Stages ◽  
Grain Filling ◽  
Triticum Aestivum L ◽  
Water Deficit Stress ◽  
Soil Water Deficit ◽  
Drought Susceptibility Index ◽  
Water Stress Tolerance

Nine genotypes of wheat (Triticum aestivum L.) C 306 PBW 154, PBW 175, PBW 396, WH 542, PBW519, PBW520, PBW527 and PBW528 were screened at seedling stage for water stress tolerance at mild (-0.20MPa) and moderate (-0.40 MPa) water potential. Water stress induced by polyethylene glycol. Dehydrins with molecular mass of 24Kd was observed in C306, PBW 396 and PBW 528. The dehydrin bands were absent in PBW154, PBW175, WH542, PBW519 and PBW520. The selected tolerant and susceptible genotypes differing in their drought tolerance viz.C306,PBW154,PBW519,PBW527 were subjected to soil water deficit stress at two developmental stages in field conditions . The leaves of genotype C306 and PBW 527 accumulated dehydrins of Mw 24Kda and 53Kda C306, PBW527 at tillering as well as anthesis stage water deficit stress. The genotypes C306, PBW 527 have lower value of drought susceptibility index showing more tolerance to water stress as compared to PBW 154, PBW 519.

Silicon Improves the Tolerance to Water-Deficit Stress Induced by Polyethylene Glycol in Wheat (Triticum aestivum L.) Seedlings

2009 ◽  
Vol 29 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Z. F. Pei ◽  
D. F. Ming ◽  
D. Liu ◽  
G. L. Wan ◽  
X. X. Geng ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Polyethylene Glycol ◽  
Water Deficit ◽  
Triticum Aestivum L ◽  
Water Deficit Stress

scholarly journals EMS Derived Wheat Mutant BIG8-1 (Triticum aestivum L.)—A New Drought Tolerant Mutant Wheat Line

2021 ◽  
Vol 22 (10) ◽  
pp. 5314
Author(s):  
Marlon-Schylor L. le Roux ◽  
Nicolas Francois V. Burger ◽  
Maré Vlok ◽  
Karl J. Kunert ◽  
Christopher A. Cullis ◽  
...  
Keyword(s):  
Amino Acids ◽  
Water Deficit ◽  
Triticum Aestivum L ◽  
Water Deficit Stress ◽  
Drought Response ◽  
Fibrous Root ◽  
Wheat Varieties ◽  
Breeding Programs ◽  
Response Characteristics ◽  
Drought Tolerant

Drought response in wheat is considered a highly complex process, since it is a multigenic trait; nevertheless, breeding programs are continuously searching for new wheat varieties with characteristics for drought tolerance. In a previous study, we demonstrated the effectiveness of a mutant known as RYNO3936 that could survive 14 days without water. In this study, we reveal another mutant known as BIG8-1 that can endure severe water deficit stress (21 days without water) with superior drought response characteristics. Phenotypically, the mutant plants had broader leaves, including a densely packed fibrous root architecture that was not visible in the WT parent plants. During mild (day 7) drought stress, the mutant could maintain its relative water content, chlorophyll content, maximum quantum yield of PSII (Fv/Fm) and stomatal conductance, with no phenotypic symptoms such as wilting or senescence despite a decrease in soil moisture content. It was only during moderate (day 14) and severe (day 21) water deficit stress that a decline in those variables was evident. Furthermore, the mutant plants also displayed a unique preservation of metabolic activity, which was confirmed by assessing the accumulation of free amino acids and increase of antioxidative enzymes (peroxidases and glutathione S-transferase). Proteome reshuffling was also observed, allowing slow degradation of essential proteins such as RuBisCO during water deficit stress. The LC-MS/MS data revealed a high abundance of proteins involved in energy and photosynthesis under well-watered conditions, particularly Serpin-Z2A and Z2B, SGT1 and Calnexin-like protein. However, after 21 days of water stress, the mutants expressed ABC transporter permeases and xylanase inhibitor protein, which are involved in the transport of amino acids and protecting cells, respectively. This study characterizes a new mutant BIG8-1 with drought-tolerant characteristics suited for breeding programs.

Effect of Water Deficit on Self-thinning Line in Spring Wheat (Triticum aestivum L.) Populations

2006 ◽  
Vol 48 (4) ◽  
pp. 415-419 ◽  
Author(s):  
Jing Liu ◽  
Liang Wei ◽  
Chun-Ming Wang ◽  
Gen-Xuan Wangl ◽  
Xiao-Ping Wei
Keyword(s):  
Triticum Aestivum ◽  
Water Deficit ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Effect Of Water
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