Differences in antioxidant enzyme activities and oxidative markers in ten wheat (<i>Triticum durum</i>Desf.) genotypes in response to drought, heat and paraquat stress

Bouchemal, Karima; Bouldjadj, Ryma; Belbekri, Mohamed Nadir; Ykhlef, Nadia; Djekoun, Abdelhamid

doi:10.1080/03650340.2016.1235267

Cited by 30 publications

(16 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the absence of a protective mechanism, these free radicals can damage the cell wall, resulting in cell leakage and the impaired function of the plant [55]. An increase in cell membrane leakage and therefore a decrease in cell membrane stability under drought stress has been reported by some researchers [56]. In the present study, severe and moderate drought stress decreased membrane stability and increased the cell membrane leakage of sorghum plants.…”

Section: Plos Onesupporting

confidence: 50%

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Kamali

Mehraban

2020

PLoS ONE

View full text Add to dashboard Cite

The use of bio-fertilizers in agro-ecosystems is considered to have the potential to improve plant growth in extreme environments featuring water shortages. However, while arbuscular mycorrhizal fungi (AMF) and bacteria bio-fertilizers have been used in other plants to enhance stress tolerance, little is known about their symbiotic effect on sorghum (Sorghum bicolor L.) growth under drought stress conditions. Therefore the aim of this study was to investigate the inoculation of sorghum with Nitroxin and Glomus mosseae and their interaction effects on the agro-physiological characteristics and grain yield of sorghum under drought stress conditions. Nitroxin is a bio-fertilizer that consists of a mixture of Azospirillum and Azotobacter bacteria. The results showed that co-inoculation of sorghum seeds with Nitroxin and AMF improved the chlorophyll (a, b and total) content, soluble proteins, water use efficiency) WUE(, relative water content (RWC), nitrogen (N) content in the plant, AMF spore density, proline content, grain yield, panicle length, the number of panicles per plant, grain number per panicle, 1000-grain weight and decreased the electrolyte leakage and water saturation deficit (WSD) in drought stress and non-stress conditions. Under drought stress conditions, there was a 27% increase in grain yield under the synergistic effects of bacteria and fungi compared to the non-application of these microorganisms. The results of this experiment show that Nitroxin and AMF bio-fertilizers can mitigate the negative effects of stress on plants in drought stress conditions by increasing the amount of photosynthetic pigments, soluble proteins and osmotic regulation and decreasing electrolyte leakage. We found that the combination of bacteria and AMF for sorghum growth and yield increment is a promising method to cope with the stress caused by drought.

show abstract

Section: Plos Onesupporting

confidence: 50%

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Kamali

Mehraban

2020

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…The electrolyte leakage of leaf samples is related to membrane damage caused by oxidative stress. Cell membrane injury is induced; therefore, electrolyte and ions can diffuse [30,35,36]. In the previous studies, the increase in the electrolyte leakage in sensitive sugarcane under drought conditions was reported by Sudhakar et al [37] and Reyes et al [38].…”

Section: Effect Of Early Drought Stress On Agronomic Traitsmentioning

confidence: 80%

Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress

et al. 2021

View full text Add to dashboard Cite

Drought is one of the important problems that drastically affect sugarcane production in several countries. The objective of this research was to investigate the effects of early drought stress on physiological parameters and agronomic traits of six sugarcane genotypes under field conditions. The experiment was arranged in a split plot in a completely randomized block design with three replications. The main plot was represented by three different water regimes: field capacity (FC), ½FC and rain-fed (RF), whereas the subplot consisted of six sugarcane genotypes: KK3 (drought tolerant), Q117 (drought tolerant), LK92-11 (drought susceptible), Ths98-271 (S. spontaneum), KK08-214 (the F1 hybrid derived from S. spontaneum × S. officinarum) and E08-4-019 (the F1 hybrid derived from Erianthus sp. × S. officinarum). The six sugarcane genotypes were subjected to three irrigation treatments. The 45-day-old plants of all sugarcane genotypes were exposed to drought by withholding water for 72 days. Certain photosynthetic parameters were measured in the leaves of four-month-old plants. Certain cane yield parameters were measured in the 12-month-old plants. The results showed that early drought stress decreased the maximum quantum yield of PSII efficiency, net photosynthetic rate, transpiration rate and stomatal conductance. Drought stress significantly (p ≤ 0.01) decreased cane yield. The cane yield and sugar yield of KK3 were significantly (p ≤ 0.01) higher than those of the other genotypes. The wild-type sugarcane and the F1 hybrids derived from the wild and commercial sugarcane could maintain better photosynthetic performance while encountering early drought stress.

show abstract

“…A drastic increase in leaf ROS generation is reported repeatedly with regards to H 2 O 2 concentration [ 28 , 30 , 61 , 62 , 63 ] and O 2 − generation rate [ 62 , 64 , 65 ] under water deficit conditions. A considerable portion of ROS generation is the result of reduced CO 2 content in the mesophyll cells due to closed stomata or minimized stomatal conductance.…”

Section: Discussionmentioning

confidence: 92%

Optimization of Potassium Supply under Osmotic Stress Mitigates Oxidative Damage in Barley

Tavakol

Jákli

Çakmak

et al. 2021

Plants

View full text Add to dashboard Cite

Potassium (K) is the most abundant cation in plants, playing an important role in osmoregulation. Little is known about the effect of genotypic variation in the tolerance to osmotic stress under different K treatments in barley. In this study, we measured the interactive effects of osmotic stress and K supply on growth and stress responses of two barley cultivars (Hordeum vulgare L.) and monitored reactive oxygen species (ROS) along with enzymatic antioxidant activity and their respective gene expression level. The selected cultivars (cv. Milford and cv. Sahin-91Sahin-91) were exposed to osmotic stress (−0.7 MPa) induced by polyethylene glycol 6000 (PEG) under low (0.04 mM) and adequate (0.8 mM) K levels in the nutrient solution. Leaf samples were collected and analyzed for levels of K, ROS, kinetic activity of antioxidants enzymes and expression levels of respective genes during the stress period. The results showed that optimal K supply under osmotic stress significantly decreases ROS production and adjusts antioxidant activity, leading to the reduction of oxidative stress in the studied plants. The cultivar Milford had a lower ROS level and a better tolerance to stress compared to the cultivar Sahin-91. We conclude that optimized K supply is of great importance in mitigating ROS-related damage induced by osmotic stress, specifically in drought-sensitive barley cultivars.

show abstract

Differences in antioxidant enzyme activities and oxidative markers in ten wheat (Triticum durumDesf.) genotypes in response to drought, heat and paraquat stress

Cited by 30 publications

References 71 publications

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress

Optimization of Potassium Supply under Osmotic Stress Mitigates Oxidative Damage in Barley

Contact Info

Product

Resources

About