Changes in antioxidant metabolism of Vigna unguiculata (L.) Walp. by propiconazole under water deficit stress

Manivannan, P.; Jaleel, Cheruth Abdul; Kishorekumar, A.; Sankar, B.; Somasundaram, R.; Sridharan, R.; Panneerselvam, R.

doi:10.1016/j.colsurfb.2007.01.004

Cited by 173 publications

(84 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to this fact that SOD processing is known to be substrateinducible (Tsang et al 1991), an increase in the SOD activity may be attributed to the increased production of active oxygen species as substrate that lead to increased expression of genes encoding SOD. Our results are consistent with other studies reporting the increased SOD activity in response to drought stress in sunflower (Gunes et al 2008), poplar (Xiao et al 2008), cowpea (Manivannan et al 2007), liquorice (Pan et al 2006), wheat (Bakalova et al 2004;Csiszar et al 2005) and pea (Malecka et al 2001).…”

Section: Discussionsupporting

confidence: 93%

Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Abedi¹,

Pakniyat²

2010

Czech J. Genet. Plant Breed.

287

116

View full text Add to dashboard Cite

Abstract:The study was undertaken to identify the responses of antioxidant enzyme activities and their isozyme patterns in seedlings of 10 oilseed rape (Brassica napus L.) cultivars under drought stress conditions. Plants were grown under three irrigation regimes (FC; field capacity, 60% FC and 30% FC) in a greenhouse. Drought stress preferentially enhanced the activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) whereas it decreased catalase (CAT) activity. Licord with the highest level of enzyme activity under both optimum and limited irrigation regimes is reported as the most tolerant cultivar. Whereas Hyola 308 and Okapy, having the lowest enzymes activities, are mentioned as cultivars sensitive to drought stress. The native polyacrylamide gel electrophoresis (PAGE) analysis detected eight SOD isozymes. Oilseed rape leaves contained three isoforms of Mn-SOD and five isoforms of Cu/Zn-SOD. The expression of Mn-SOD was preferentially enhanced by drought stress. Five POD isoforms were detected in oilseed rape leaves. The intensities of POD-4 and -5 were enhanced under drought stress. According to the results, the appearance of new isozyme bands under drought stress conditions may be used as a biochemical marker to differentiate drought tolerant cultivars under drought stress.

show abstract

Section: Discussionsupporting

confidence: 93%

Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Abedi¹,

Pakniyat²

2010

Czech J. Genet. Plant Breed.

287

116

View full text Add to dashboard Cite

show abstract

“…SOD induction by different environmental stresses has been reported (Bowler et al 1992). It was also reported that the increase in SOD activity enhance plants water stress tolerance (Manivannan et al 2007c). In tomato plants, SOD activity was induced strongly by water stress (Noctor et al 2000).…”

Section: Discussionmentioning

confidence: 92%

Effect of water stress on antioxidant systems and oxidative parameters in fruits of tomato (Solanum lycopersicon L, cv. Micro-tom)

Murshed

Lopez-Lauri²,

Sallanon

2013

Physiol Mol Biol Plants

100

View full text Add to dashboard Cite

The effects of different levels of water stress on oxidative parameters (H 2 O 2 and MDA), the total pool sizes of ascorbate, the activities of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), as well as the activities and relative transcript levels of the enzymes of ascorbate-glutathione cycle ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR) were studied in the fruit of tomato (Solanum lycopersicum L. cv. Micro-Tom). Plants were subjected to three levels of water stress (S50, S25 and S0) and fruits at different development stages were harvested after 3, 6 and 10 days of stress. Changes in H 2 O 2 and MDA contents indicated that water stress induced oxidative stress in fruits. The concentrations of ascorbate (AsA) and dehydroascorbate (DHA) generally modified with water stress treatments. Moreover, changes in SOD and CAT activities and DHAR, MDHAR, APX and GR activities and relative transcript levels were dependent on the fruit development stage and the intensity and the duration of water stress. These results suggest that the response of antioxidant systems of tomato fruits to oxidative stress induced by water stress treatments was different depending on the fruit development stage.

show abstract

“…is one of the most important legume species used in human food and animal feed and is largely cultivated in semi-arid regions due to its broad adaptability and low water and nutrient requirements (Agele et al 2006;Manivannan et al 2007;Barbosa et al 2013). The grains represent the focus of this culture, with socioeconomic importance due to their high content of proteins, carbohydrates, vitamins, and minerals, such as phosphorus and potassium, compared with other legumes (Phillips et al 2003;Iqbal et al 2006;Frota et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Brassinosteroids improve photosystem II efficiency, gas exchange, antioxidant enzymes and growth of cowpea plants exposed to water deficit

Lima

Lobato

2017

Physiol Mol Biol Plants

View full text Add to dashboard Cite

Water deficit is considered the main abiotic stress that limits agricultural production worldwide. Brassinosteroids (BRs) are natural substances that play roles in plant tolerance against abiotic stresses, including water deficit. This research aims to determine whether BRs can mitigate the negative effects caused by water deficiency, revealing how BRs act and their possible contribution to increased tolerance of cowpea plants to water deficit. The experiment was a factorial design with the factors completely randomised, with two water conditions (control and water deficit) and three levels of brassinosteroids (0, 50 and 100 nM 24-epibrassinolide; EBR is an active BRs). Plants sprayed with 100 nM EBR under the water deficit presented significant increases in U PSII , q P and ETR compared with plants subjected to the water deficit without EBR. With respect to gas exchange, P N , E and g s exhibited significant reductions after water deficit, but application of 100 nM EBR caused increases in these variables of 96, 24 and 33%, respectively, compared to the water deficit ? 0 nM EBR treatment. To antioxidant enzymes, EBR resulted in increases in SOD, CAT, APX and POX, indicating that EBR acts on the antioxidant system, reducing cell damage. The water deficit caused significant reductions in Chl a, Chl b and total Chl, while plants sprayed with 100 nM EBR showed significant increases of 26, 58 and 33% in Chl a, Chl b and total Chl, respectively. This study revealed that EBR improves photosystem II efficiency, inducing increases in U PSII , q P and ETR. This substance also mitigated the negative effects on gas exchange and growth induced by the water deficit. Increases in SOD, CAT, APX and POX of plants treated with EBR indicate that this steroid clearly increased the tolerance to the water deficit, reducing reactive oxygen species, cell damage, and maintaining the photosynthetic pigments. Additionally, 100 nM EBR resulted in a better dose-response of cowpea plants exposed to the water deficit.

show abstract

Changes in antioxidant metabolism of Vigna unguiculata (L.) Walp. by propiconazole under water deficit stress

Cited by 173 publications

References 35 publications

Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Effect of water stress on antioxidant systems and oxidative parameters in fruits of tomato (Solanum lycopersicon L, cv. Micro-tom)

Brassinosteroids improve photosystem II efficiency, gas exchange, antioxidant enzymes and growth of cowpea plants exposed to water deficit

Contact Info

Product

Resources

About