Developing a hybrid technique to optimize abscisic acid concentration in a saline condition: A multi-objective strategy to improve strawberry phenolic acids and growth factors

The objective of this work was to assess the regulatory effects of auxin-priming on gas exchange and hormonal homeostasis in spring wheat subjected to saline conditions. Seeds of MH-97 (salt-intolerant) and Inqlab-91 (salt-tolerant) cultivars were subjected to 11 priming treatments (three hormones x three concentrations + two controls) and evaluated under saline (15 dS m-1) and nonsaline (2.84 dS m-1) conditions. The priming treatments consisted of: 5.71, 8.56, and 11.42 × 10-4 mol L-1 indoleacetic acid; 4.92, 7.38, and 9.84 × 10-4 mol L-1 indolebutyric acid; 4.89, 7.34, and 9.79 × 10-4 mol L-1 tryptophan; and a control with hydroprimed seeds. A negative control with nonprimed seeds was also evaluated. All priming agents diminished the effects of salinity on endogenous abscisic acid concentration in the salt-intolerant cultivar. Grain yield was positively correlated with net CO2 assimilation rate and endogenous indoleacetic acid concentration, and it was negatively correlated with abscisic acid and free polyamine concentrations. In general, the priming treatment with tryptophan at 4.89 × 10-4 mol L-1 was the most effective in minimizing yield losses and reductions in net CO2 assimilation rate, under salt stress conditions. Hormonal homeostasis increases net CO2 assimilation rate and confers tolerance to salinity on spring wheat.

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Abscisic Acid Content and Osmotic Relations of Salt-Stressed Grapevine Leaves

Functional Plant Biology ◽

10.1071/pp9810443 ◽

1981 ◽

Vol 8 (5) ◽

pp. 443 ◽

Cited By ~ 22

Author(s):

WJS Downton ◽

BR Loveys

Keyword(s):

Abscisic Acid ◽

Acid Concentration ◽

Stomatal Resistance ◽

Vitis Vinifera L ◽

Phaseic Acid ◽

Ion Content ◽

Grapevine Leaves ◽

Abscisic Acid Content ◽

Osmotic Potentials ◽

Reducing Sugar Concentration

Changes in abscisic acid, phaseic acid, stomatal resistance, water potential, osmotic potential, turgor potential, proline, reducing sugars and ion content (Na+, K+, Cl-) in leaves from grapevines (Vitis vinifera L.) subjected to 0, 25, 50 or 100 mM NaCl (osmotic potentials of 0, - 0.1, - 0.2 and - 0.4 MPa, respectively) were monitored over a 3-week period. Abscisic acid concentration increased within 6 h for the 50 and 100 mM NaCl-treated vines. Proline did not accumulate until the next day for the 100 mM NaCl-treated plants and continued to accumulate for the duration of the experiment. Phaseic acid showed kinetics consistent with its being derived from abscisic acid. Stomatal resistance to water vapour exchange increased in the salt-treated plants over the course of the experiment despite a decline in abscisic acid concentration after the initial upsurge. Reducing sugar concentration showed an early upsurge, its contribution to osmotic readjustment being at least equal to that of accumulated Na+, K+ and Cl- the day after stress began. Potassium was preferentially accumulated over sodium into leaves during the first 8 days of the experiment and the sum of these two cations generally balanced accumulating chloride. Except for an initial loss of turgor in vines given 100 mM NaCl, turgor potential was maintained within 0.1 MPa of control plants for all of the treatments throughout the experiment.

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Author response: FRET-based reporters for the direct visualization of abscisic acid concentration changes and distribution in Arabidopsis

10.7554/elife.01739.023 ◽

2014 ◽

Author(s):

Rainer Waadt ◽

Kenichi Hitomi ◽

Noriyuki Nishimura ◽

Chiharu Hitomi ◽

Stephen R Adams ◽

...

Keyword(s):

Abscisic Acid ◽

Acid Concentration ◽

Author Response ◽

Direct Visualization ◽

Concentration Changes

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Multi-objective-based robust unit commitment using hydro-thermal-wind: a hybrid technique

International Journal of Energy Sector Management ◽

10.1108/ijesm-07-2018-0015 ◽

2019 ◽

Vol 13 (4) ◽

pp. 804-827 ◽

Cited By ~ 4

Author(s):

Achala Jain ◽

Anupama P. Huddar

Keyword(s):

Wind Speed ◽

Optimization Problems ◽

Peak Load ◽

Wind Farms ◽

Hybrid Technique ◽

Swarm Optimization ◽

Hydro Power ◽

Content Type ◽

Thermal Wind ◽

Multi Objective

Purpose The purpose of this paper is to solve economic emission dispatch problem in connection of wind with hydro-thermal units. Design/methodology/approach The proposed hybrid methodology is the joined execution of both the modified salp swarm optimization algorithm (MSSA) with artificial intelligence technique aided with particle swarm optimization (PSO) technique. Findings The proposed approach is introduced to figure out the optimal power generated power from the thermal, wind farms and hydro units by minimizing the emission level and cost of generation simultaneously. The best compromise solution of the generation power outputs and related gas emission are subject to the equality and inequality constraints of the system. Here, MSSA is used to generate the optimal combination of thermal generator with the objective of minimum fuel and emission objective function. The proposed method also considers wind speed probability factor via PSO-artificial neural network (ANN) technique and hydro power generation at peak load demand condition to ensure economic utilization. Originality/value To validate the advantage of the proposed approach, six- and ten-units thermal systems are studied with fuel and emission cost. For minimizing the fuel and emission cost of the thermal system with the predicted wind speed factor, the proposed approach is used. The proposed approach is actualized in MATLAB/Simulink, and the results are examined with considering generation units and compared with various solution techniques. The comparison reveals the closeness of the proposed approach and proclaims its capability for handling multi-objective optimization problems of power systems.

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