Enhancement of antioxidant enzyme activities in rice callus by ascorbic acid under salinity stress

Salt stress is one of the main factors limiting plant growth and yield globally. Seed priming technique with different chemicals including β-aminobutyric acid (BABA) is found to be effective in enhancing plant growth and development under biotic and abiotic stresses. Scarce reports have been found about BABA seed priming in medicinal plants under stress conditions; however, several studies have been conducted on other crops but have not made an in-depth study to investigate biochemical and physiological changes. In current study the shoot growth, relative water content (RWC), chlorophyll content, stomatal conductance, nutrient content (N, P, K, Na and Cl), proline, malondialdehyde (MDA), hydrogen peroxide (H2O2) content, antioxidants enzymes (CAT, SOD and POD), membrane stability index (MSI), total phenolic and flavonoids contents lipid peroxidation and membrane permeability were investigated in Calendula officinalis L. leaves due to BABA seed priming and/or salt stress treatment. Salt stress treatment significantly reduced the growth characters, inflorescence number as well as its fresh and dry weights, N, P and K contents in leaves, RWC, chlorophyll content, stomatal conductance, MSI and total phenolic and flavonoids contents of pot marigold. However, proline content, MDA accumulation, H2O2 content and antioxidant enzyme activity (CAT, SOD and POD) were increased due to salt stress. On the other hand, seed priming with BABA significantly improved the growth characters, inflorescence attributes and the previously mentioned physiological and biochemical parameters investigated relative to the control. Applying seed priming under salt stress conditions significantly mitigated the negative effects of salinity and enhanced the growth and productivity of pot marigold and therefore was suggested to be an effective technique prior to cultivation.

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“…Na + or Clstress) to plants as well as a nutrient imbalance. NaCl decreased fresh and dry masses, relative growth rate, and K + and Ca [12,13].…”

Section: Introductionmentioning

confidence: 95%

β-Aminobutyric Acid Raises Salt Tolerance and Reorganises Some Physiological Characters in Calendula officinalis L. Plant

Ali

Hassan

2019

ARRB

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“…These results indicated that exogenous AsA and GSH differentially increased salinity tolerance and mitigate the damages of salt-induced stress. Alhasnawi et al [123] investigated the effect of exogenous AsA application on embryogenic callus of indica rice cv. MRQ74 cultured under saline conditions (200 mM NaCl).…”

Section: Antioxidantsmentioning

confidence: 99%

Salt Stress Tolerance in Rice: Emerging Role of Exogenous Phytoprotectants

Rahman¹,

Mahmud²,

MirzaHasanuzzaman³

et al. 2017

Advances in International Rice Research

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Excess salinity in soil is one of the major environmental factors that limit plant growth and yield of a wide variety of crops including rice. On the basis of tolerance ability toward salinity, rice is considered as salt-sensitive crop, and growth and yield of rice are greatly affected by salinity. In general, rice can tolerate a small amount of saltwater without compromising the growth and yield. However, it greatly depends on the types and species of rice and their growth stage. Salinity-induced ionic and osmotic stresses reduce rate of photosynthesis and consequently cause oxidative stress, which is also responsible for growth reduction. The negative effects of salt stress that mentioned ultimately reduced yield of most crops including rice, except some halophytes. In recent decades, researchers have developed various approaches toward making salt-tolerant rice varieties. Using phytoprotectants is found to be effective in conferring salt tolerance to rice plants. In this chapter, we reviewed the recent reports on different aspects on salt stress tolerance strategies in light of using phytoprotectants.

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“…Consequently, the total charges must be balanced in the cells by the decrease of the others elements. The decline in ion accumulation and their transport selectivity may serve as an important physiological trait of adapting to NaCl stress, which has been well documented in Ocimum basilicum L. [28], in Solanum lycopersicum [37], Oryza sativa L [38], and Solanum nigrum [39].…”

Section: Ions Analysesmentioning

confidence: 99%

How Salt Stress Represses the Biosynthesis of Marrubiin and Disturbs the Antioxidant Activity of Marrubium Vulgare L

Rezgui¹,

Majdoub²,

Ben-Kaab³

et al. 2017

Pol. J. Environ. Stud.

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Enhancement of antioxidant enzyme activities in rice callus by ascorbic acid under salinity stress

Cited by 30 publications

References 23 publications

β-Aminobutyric Acid Raises Salt Tolerance and Reorganises Some Physiological Characters in Calendula officinalis L. Plant

β-Aminobutyric Acid Raises Salt Tolerance and Reorganises Some Physiological Characters in Calendula officinalis L. Plant

Salt Stress Tolerance in Rice: Emerging Role of Exogenous Phytoprotectants

How Salt Stress Represses the Biosynthesis of Marrubiin and Disturbs the Antioxidant Activity of Marrubium Vulgare L

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