Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

Bano, Asghari; Ullah, Faizan; Nosheen, Asia

doi:10.17221/210/2011-pse

Cited by 85 publications

(37 citation statements)

References 22 publications

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“…It was reported that, the spike length, number of grains per spike and weight of 1000 grain weight were significantly decreased in drought stressed wheat plants (Bano et al, 2012). It was reported that the deficiency of water causes decline in yield traits of crop plants probably by disrupting leaf gas exchange which limits the assimilate translocation and dry matter partitioning (Farooq et al, 2009).…”

Section: The Effects Of Drought and Ca + Treatments Are Prolonged To mentioning

confidence: 99%

Study of the Interactive Effects of Calcium and Abscisic Acid on Drought Stressed Triticum aestivum Seedlings

Sewelam

2017

Egypt. J. Bot.

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IN THEIR natural habitats, plants are continuously subjected to many severe environmental challenges including drought. In this study, the effects of drought on Triticum aestivum seedlings were assessed, and the alleviating roles and interactive effects of calcium (Ca 2+ ) and abscisic acid (ABA) to drought stress were studied. The results showed that pretreating wheat seedlings with calcium chloride (CaCl 2 ) or ABA led to alleviating most of the negative effects of 20% polyethylene glycol (PEG, as a drought imposing agent). Ca 2+ improved the growth criteria, photosynthetic activity, but ABA had no significant effects on growth parameters. Ca 2+ or ABA pretreatments have alleviated the toxic effects of the drought-induced oxidative stress which was marked with the reduction of MDA content. Ca 2+ and/or ABA reduced the PEGinduced catalase activity, and ascorbic acid content. The use of lanthanum chloride (LaCl 3 ) as a calcium channel blocker has confirmed the role of Ca 2+ in ameliorating the drought effects on plant. This study revealed that the application of Ca 2+ has increased the endogenous ABA level of the treated seedlings to a high extent exceeding that of PEG treatment itself suggesting that ABA requires Ca 2+ ions for its induction, and ABA is working downstream from Ca 2+ in the relevant signaling pathways activated by drought stress. The alleviating effects of Ca 2+ was prolonged to the yield stage. Overall, our results suggest that Ca 2+ (10 mM), and with a less extend ABA (0.1 mM), represent signaling agents that can partially alleviate drought stress in plants growing in dry environments.

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Section: The Effects Of Drought and Ca + Treatments Are Prolonged To mentioning

confidence: 99%

Study of the Interactive Effects of Calcium and Abscisic Acid on Drought Stressed Triticum aestivum Seedlings

Sewelam

2017

Egypt. J. Bot.

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“…550, 2967,621 may be indication of the cellular evaluated ROS, since the amount of POD enzyme present in aerobic cells is directly related to the oxidative state of the cell (Apel & Hurt, 2004). In the earlier studies, the increase in the activities of antioxidant enzymes by ABA application was reported in different cultivars of wheat (Bano et al, 2012). So as an adaptive enzyme in antioxidant system, Class-III BsPOD play an important role in protecting membrane lipids from peroxidation and in reducing the cell damage being caused by ABA-induced oxidative stress in embryos.…”

Section: Aba-induced Changes In Boiling Stable Pod Activity and Isoenmentioning

confidence: 95%

Accumulation of class-III type of boiling stable Peroxidases in response to plant growth hormone ABA in Triticum aestivum cultivars

Sharma¹,

Rakhra²,

Mamik³

et al. 2014

Plant Sci Today

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Abscisic acid (ABA) is a key plant growth and stress hormone involved in many biological processes. It has been shown to be involved in Reactive Oxygen Species (ROS) generation. Class-III Peroxidases (PODs) are known to maintain oxidative stress induced-ROS at sublethal levels in plants under abiotic stress conditions, but, studies documenting how ABA regulates boiling stable class-III PODs are still a matter of conjuncture. In this study, the ABA-induced changes on ROS and ROS scavenging class III boiling stable POD were studied in the embryos of different cultivars of wheat. Simultaneous analysis of ROS contents, activities of ROS-scavenging class-III boiling stable POD enzymes gave an integrative view of physiological state and detoxifying potential under conditions of sensitivity and tolerance. Indices of oxidative stress viz., superoxide radical and H2O2 content increased under ABA treatment in a genotype dependent manner. It was observed that cultivars: PBW 550, HD 2967 and PBW 621 have more efficient mechanism to scavenge ROS species as shown by increase in BsPOD activity accompanied by enhanced expression of boiling stable POD isoenzymes. Based on results it can be inferred that embryos of cvs. PBW 550, HD 2967 and PBW 621 have more capacity to perform biological antioxidative reactions to combat ABA-induced oxidative stress.

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“…It w as report ed that, the spike length and numb er of grains p er spike were significantl y decreas ed under drought stress of wheat plant (Bano et al, 2012). Also, it w as found t hat w hen maiz e plants were exp osed t o drought stress at s eedling stage, it l ed t o s ubstanti al reduc tion in yield components s uch a ker nel row s/c ob, kernel number/r ow, 100 k ernels w eight , k ernels/c ob, grain yi eld/plant ( Anj um et al, 2011).…”

Section: +mentioning

confidence: 97%

Roles of Calcium and ABA in Alleviating Drought Stress Effects on Triticum aestivum L. Plants

Abo-Kassem¹,

Sobhy²,

Dowidar³

et al. 2017

Egypt. J. Exp. Biol. (Bot.)

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Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

Cited by 85 publications

References 22 publications

Study of the Interactive Effects of Calcium and Abscisic Acid on Drought Stressed Triticum aestivum Seedlings

Study of the Interactive Effects of Calcium and Abscisic Acid on Drought Stressed Triticum aestivum Seedlings

Accumulation of class-III type of boiling stable Peroxidases in response to plant growth hormone ABA in Triticum aestivum cultivars

Roles of Calcium and ABA in Alleviating Drought Stress Effects on Triticum aestivum L. Plants

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