Alleviation of salt stress by plant growth regulators in Triticum aestivum L.

Datta, K.S.; Varma, S. K.; Angrish, R.; Kumar, Bhumesh; Kumari, Pooja

doi:10.1023/a:1001076805595

Cited by 36 publications

(15 citation statements)

References 27 publications

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“…Other authors also reported that pre-sowing wheat seeds with plant growth regulators like IAA, gibberellins alleviated the growth inhibiting effect of salt stress (Singh and Dara 1971;Datta et al 1998;Sastry and Shekhawa 2001;Afzal et al 2005). Khan and Weber (1986) and Gul et al (2000) also observed that the plant growth stimulating compounds such gibberellic acid, zeatin, and ethephon can alleviate the effect of salinity on germination and growth of Ceratoides lanata, Salicarnia pacifica, Allenrolfea accidentalis (Khan et al 2001(Khan et al , 2004.…”

Section: Resultsmentioning

confidence: 98%

Alleviation of salt stress by plant growth regulators and IAA producing bacteria in wheat

2009

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The action of phytohormone producing bacteria and plant growth regulators on germination and seedling growth of wheat under saline conditions were studied. Seed dormancy enforced by salinity (100 mM NaCl) was substantially alleviated and the germination was promoted by gibberellin, auxin, zeatin, and ethephon from 54 to 97%. The IAA producing bacterial strains Pseudomonas aureantiaca TSAU22, Pseudomonas extremorientalis TSAU6 and Pseudomonas extremorientalis TSAU20 significantly increased seedling root growth up to 25% in non-salinated conditions and up to 52% at 100 mM NaCl, compared to control plants. It is concluded that growth regulators considerably alleviated salinity-induced dormancy of wheat seeds. The facts mentioned above make it possible to recommend root colonizing bacteria that produce phytohormone to alleviate salt stress of wheat grown under conditions of soil salinity.

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Section: Resultsmentioning

confidence: 98%

Alleviation of salt stress by plant growth regulators and IAA producing bacteria in wheat

2009

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“…Salinity is the main environmental factor responsible for reduced crop productivity in many areas worldwide, especially in arid and semiarid regions (Greenway and Munns 1980). Many studies have primarily focused on plant responses to salt stress in soils (Datta et al 1997; Ghoulam et al 2002). Seed germination and seedling growth are critical life stages that are often associated with high mortality rates in plants.…”

Section: Discussionmentioning

confidence: 99%

Eco‐physiological Characteristics of Alfalfa Seedlings in Response to Various Mixed Salt‐alkaline Stresses

Peng

Gao

et al. 2008

JIPB

110

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Soil salinization and alkalization frequently co-occur in nature, but little is known about the mixed effects of salt-alkaline stresses on plants. An experiment with mixed salts (NaCl, Na(2)SO(4), NaHCO(3) and Na(2)CO(3)) and 30 salt-alkaline combinations (salinity 24-120 mmol/L and pH 7.03-10.32) treating Medicago sativa seedlings was conducted. The results demonstrated that salinity and alkalinity significantly affected total biomass and biomass components of seedlings. There were interactive effects of salt composition and concentration on biomass (P

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“…Concerted attempts have been made to mitigate the harmful effects of salinity by application of plant growth regulators [33]. Thus the detrimental effects of high salts on the early growth of wheat seedlings may be reduced to some extent by treating seeds with the proper concentration of a suitable hormone [34].…”

Section: Discussionmentioning

confidence: 99%

“…Lipids found to be connected to the plant defense response through potential action as signaling molecules [44] through the fatty acid-linolenic acid, acting as the precursor for 12-oxyphytodienoic acid (OPDA) and JA synthesis via octadecanoid pathway [45]. Concerted attempts have been made to mitigate the harmful effects of salinity by application of plant growth regulators [33]. Thus, the detrimental effects of high salts on the early growth of wheat seedlings may be reduced to some extent by treating seeds with the proper concentration of a suitable hormone [34].…”

Section: Discussionmentioning

confidence: 99%

Role of Biotic Elicitors as Potent Inducer of Defence Mechanism against Salt-Stress in Wheat (Triticum aestivum L.)

Hasan¹,

Kumar²,

Rd³

et al. 2018

J Plant Biochem Physiol

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Wheat (Triticum aestivum L.) known as bread wheat (hexaploid), is an important cereal for millions around the world. Excessive salts in soil affect growth, development and productivity of crop plants and have been major constraints to agriculture. Plants, being sessile in nature, have developed mechanisms to cope with high salt concentrations in soil. To understand salt-tolerance in crop plant and its improvement, total phenolic content (TPC), lipid peroxidation (LP), total antioxidant activity (AO) and high affinity potassium transporters (HKTs) in shoot and root regions of contrasting wheat genotype WH 542 (salt-susceptible) and KRL 210 (salt-tolerant) were studied on seed priming with two different biotic elicitors-salicylic acid (SA) and methyl jasmonate (MJ). Primed seeds were sown in pots under controlled conditions in phytotron and were exposed to 150 mM NaCl stress after 14 days of germination. Expression pattern of HKT genes in the root and shoot of the primed and unprimed as well as stressed and unstressed seedlings were also studied using semi-quantitative and quantitative analysis. Higher levels of TPC, LP and AO activity were observed in the contrasting wheat genotypes under salt stressed condition. Both HKT1 and HKT3 genes were involved in regulating ion homeostasis. Up and down regulation of expression of HKT genes in shoot and root, respectively, provide resistance against salt uptake. Biotic elicitors (SA and MJ) were found to mitigate the effect of salt-stress by affecting expression of HKT genes as well their biochemical-processes. MJ showed better response than that of SA, and can be utilized to improve defense responses of crop plant against salt stress. The regulation of gene expressions and signaling cascades that regulate Na + transporters remain to be elucidated and these studies will help in understanding the mechanism of ion homeostasis during salt stress to improve crop yield.

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Alleviation of salt stress by plant growth regulators in Triticum aestivum L.

Cited by 36 publications

References 27 publications

Alleviation of salt stress by plant growth regulators and IAA producing bacteria in wheat

Alleviation of salt stress by plant growth regulators and IAA producing bacteria in wheat

Eco‐physiological Characteristics of Alfalfa Seedlings in Response to Various Mixed Salt‐alkaline Stresses

Role of Biotic Elicitors as Potent Inducer of Defence Mechanism against Salt-Stress in Wheat (Triticum aestivum L.)

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