Effect of short-term water deficit stress on antioxidative systems in cucumber seedling roots

Abstract Water deprivation affects photosynthesis, leaf anatomy, and cell wall composition. Although the former effects have been widely studied, little is known regarding those changes in cell wall major (cellulose, hemicelluloses, pectin, and lignin) and minor (cell wall-bound phenolics) compounds in plants acclimated to short- and long-term water deprivation and during recovery. In particular, how these cell wall changes impact anatomy and/or photosynthesis, specifically mesophyll conductance to CO2 diffusion (gm), has been scarcely studied. To induce changes in photosynthesis, cell wall composition and anatomy, Helianthus annuus plants were studied under five conditions: (i) control (i.e. without stress) (CL); (ii) long-term water deficit stress (LT); (iii) long-term water deficit stress with recovery (LT-Rec); (iv) short-term water deficit stress (ST); and (v) short-term water deficit stress with recovery (ST-Rec), resulting in a wide photosynthetic range (from 3.80 ± 1.05 μmol CO2 m−2 s−1 to 24.53 ± 0.42 μmol CO2 m−2 s−1). Short- and long-term water deprivation and recovery induced distinctive responses of the examined traits, evidencing a cell wall dynamic turnover during plants acclimation to each condition. In particular, we demonstrated for the first time how gm correlated negatively with lignin and cell wall-bound phenolics and how the (cellulose+hemicelloses)/pectin ratio was linked to cell wall thickness (Tcw) variations.

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Combined Effect of Short-Term Water Deficit Stress and Aluminum Toxicity on Citrate Secretion from Soybean Roots

Journal of Plant Nutrition ◽

10.1081/pln-120038548 ◽

2005 ◽

Vol 27 (7) ◽

pp. 1281-1293 ◽

Cited By ~ 5

Author(s):

Hai Nian ◽

Zhenming Yang ◽

He Huang ◽

Xiaolong Yan ◽

Hideaki Matsumoto

Keyword(s):

Water Deficit ◽

Aluminum Toxicity ◽

Combined Effect ◽

Water Deficit Stress ◽

Short Term ◽

Soybean Roots ◽

Citrate Secretion

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Effects of short-term water deficit stress on physiological characteristics of Bambara groundnut (Vigna subterranea(L.) Verdc.)

South African Journal of Plant and Soil ◽

10.1080/02571862.2015.1056847 ◽

2015 ◽

Vol 33 (1) ◽

pp. 51-58 ◽

Cited By ~ 1

Author(s):

Yusuf Y Muhammad ◽

Sean Mayes ◽

Festo Massawe

Keyword(s):

Water Deficit ◽

Bambara Groundnut ◽

Physiological Characteristics ◽

Water Deficit Stress ◽

Vigna Subterranea ◽

Short Term

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The study of important agronomic traits by multivariate analysis in winter rapeseed cultivars

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v1i1.4240 ◽

2014 ◽

Vol 1 (1) ◽

pp. 20-24

Author(s):

Gader Ghaffari ◽

Farhad Baghbani ◽

Behnam Tahmasebpour

Keyword(s):

Water Potential ◽

Water Deficit ◽

Leaf Water Potential ◽

Seed Weight ◽

Dry Weight ◽

Total Variance ◽

Water Deficit Stress ◽

The Third ◽

High Eigenvalue ◽

Winter Rapeseed

In order to group winter rapeseed cultivars according to evaluated traits, an experiment was conducted in the Research Greenhouse of Agriculture Faculty, University of Tabriz - IRAN. In the experiment were included 12 cultivars of winter rapeseed and 3 levels of water deficit stress. Gypsum blocks were used to monitor soil moisture. Water deficit stress was imposed from stem elongation to physiological maturity. According to the principal component analysis, five principal components were chosen with greater eigenvalue (more than 0.7) that are including 81.34% of the primeval variance of variables. The first component that explained the 48.02% of total variance had the high eigenvalue. The second component could justify about 13.64% of total variance and had positive association with leaf water potential and proline content and had negative relationship with leaf stomatal conductivity. The third, fourth and fifth components expressed around, 10.18, 4.83 and 4.68% of the total variance respectively. The third component had the high eigenvalue for plant dry weight. The fourth component put 1000-seed weight, seed yield, Silique per Plant and root dry weight against plant dry weight, chlorophyll fluorescence and leaf water potential. The fifth component had the high eigenvalue for root dry weight, root volume and 1000-seed weight.

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Differential response to water deficit stress and shade in two wheat (Triticum durum Desf.) cultivars: growth, water relations, osmolyte accumulation and photosynthetic pigments

Pakistan Journal of Botany ◽

10.30848/pjb2019-4(4) ◽

2019 ◽

Vol 51 (4) ◽

Cited By ~ 1

Author(s):

Fatma Gharbi ◽

Asma Guizani ◽

Lobna Zribi ◽

Hela Ben Ahmed ◽

Florent Mouillot

Keyword(s):

Water Deficit ◽

Water Relations ◽

Photosynthetic Pigments ◽

Triticum Durum ◽

Differential Response ◽

Water Deficit Stress ◽

Osmolyte Accumulation ◽

Triticum Durum Desf ◽

Response To Water

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

International Journal of Molecular Sciences ◽

10.3390/ijms22105314 ◽

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.

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Increase maize productivity and water use efficiency through application of potassium silicate under water stress

Scientific Reports ◽

10.1038/s41598-020-80656-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

M. A. Gomaa ◽

Essam E. Kandil ◽

Atef A. M. Zen El-Dein ◽

Mamdouh E. M. Abou-Donia ◽

Hayssam M. Ali ◽

...

Keyword(s):

Grain Yield ◽

Water Use Efficiency ◽

Water Deficit ◽

Water Use ◽

Field Experiments ◽

Foliar Application ◽

Potassium Silicate ◽

Water Deficit Stress ◽

Maize Productivity ◽

Use Efficiency

AbstractIn Egypt, water shortage has become a key limiting factor for agriculture. Water-deficit stress causes different morphological, physiological, and biochemical impacts on plants. Two field experiments were carried out at Etay El-Baroud Station, El-Beheira Governorate, Agriculture Research Center (ARC), Egypt, to evaluate the effect of potassium silicate (K-silicate) of maize productivity and water use efficiency (WUE). A split-plot system in the four replications was used under three irrigation intervals during the 2017 and 2018 seasons. Whereas 10, 15, and 20 days irrigation intervals were allocated in main plots, while the three foliar application treatments of K-silicate (one spray at 40 days after sowing; two sprays at 40 and 60 days; and three sprays at 40, 60, and 80 days, and a control (water spray) were distributed in the subplots. All the treatments were distributed in 4 replicates. The results indicated that irrigation every 15 days gave the highest yield in both components and quality. The highly significant of (WUE) under irrigation every 20 days. Foliar spraying of K-silicate three times resulted in the highest yield. Even under water-deficit stress, irrigation every fifteen days combined with foliar application of K-silicate three times achieved the highest values of grain yield and its components. These results show that K-silicate treatment can increase WUE and produce high grain yield requiring less irrigation.

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