Protective mechanisms of heat tolerance in crop plants

Asthir, Bavita

doi:10.1080/17429145.2015.1067726

Cited by 77 publications

(39 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Heat stress (late sown condition) increased average canopy temperature across all cultivars. The correlation between canopy temperature and grain yield was negative and significant which agrees with previously reported results [49][50][51]. The prevalence and severity of stem and leaf rust were increased due to the late sown condition.…”

Section: Discussionsupporting

confidence: 91%

Performance and Stability of Commercial Wheat Cultivars under Terminal Heat Stress

Elbasyoni

2018

Agronomy

View full text Add to dashboard Cite

Egypt, the fifteenth most populated country and the largest wheat importer worldwide, is vulnerable to global warming. Ten of the commercial and widely grown wheat cultivars were planted in two locations, i.e., Elbostan and Elkhazan for three successive seasons 2014/2015, 2015/2016, and 2016/2017 under two sowing dates (recommended and late). Elbostan and Elkhazan are the two locations used in this study because they represent newly reclaimed sandy soil and the Nile delta soil (clay), respectively. A split-plot, with main plots arranged as a randomized complete block design and three replicates, was used. The overall objective of this study was to identify the ideal cultivar for recommended conditions and heat stressed conditions. The results revealed that heat stress had a significant adverse impact on all traits while it raised the prevalence and severity of leaf and stem rust which contributed to overall yield losses of about 40%. Stability measurements, the additive main effects and multiplicative interaction model (AMMI) and genotype main effect plus genotype × environment interaction (GGE), were useful to determine the ideal genotypes for recommended and late sowing conditions (heat stressed). However, inconsistency was observed among some of these measurements. Cultivar "Sids12" was stable and outperformed other tested cultivars under combined sowing dates across environments. However, cultivar "Gemmeiza9" was more stable and outperformed other cultivars across environments under the recommended sowing date. Moreover, cultivar "Gemmeiza12" was the ideal cultivar for the late sown condition. Based on our findings, importing and evaluating heat stress tolerant wheat genotypes under late sown conditions or heat stressed conditions in Egypt is required to boost heat stress tolerance in the adapted wheat cultivars.

show abstract

Section: Discussionsupporting

confidence: 91%

Performance and Stability of Commercial Wheat Cultivars under Terminal Heat Stress

Elbasyoni

2018

Agronomy

View full text Add to dashboard Cite

show abstract

“…Thermo tolerance capacity was analyzed using total antioxidant capacity parameter and was found high in thermo tolerant genotypes as compared to thermo susceptible genotypes Kumar et al, (2013). Similar results were found by Almeselmani et al, (2006); (Asthir 2015). Membrane is the first line of defense having many heat responsive sensors which helps plant to trigger its defense mechanism against heat stress, so the integrity of the membrane is an important parameter for heat tolerance Kumar et al, (2012).…”

Section: Relation Between Cell Membrane Stability and Total Antioxidasupporting

confidence: 66%

Evaluation of Wheat Genotypes for Protective Mechanisms of Terminal Heat Stress

ja¹,

Munjal²,

Ram³

2017

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

“…Facing extreme environmental changes, plants have evolved a protective mechanism known as acclimation . The regulated induction of reactive oxygen species (ROS) and enhancement of membrane stability act as temperature resistance for plants . As such, enzymatic and non‐enzymatic protective mechanisms have been reported for the scavenging of the over‐generated ROS under oxidative stress.…”

Section: Introductionmentioning

confidence: 99%

Effects of temperature stress on the accumulation of ascorbic acid and folates in sweet corn (Zea mays L.) seedlings

Xiang

Teng

et al. 2019

J Sci Food Agric

View full text Add to dashboard Cite

BACKGROUND: Extreme temperatures are among the primary abiotic stresses that affect plant growth and development. Ascorbic acid (AsA) is an efficient antioxidant for scavenging relative oxygen species accumulated under stress. Folates play a significant role in DNA synthesis and protect plants against oxidative stress. Sweet corn (Zea mays L.), a crop grown worldwide, is sensitive to extreme temperatures at seedling stage, which may cause yield loss. This study was conducted to explore the biosynthetic regulative mechanism of AsA and folates in sweet corn seedlings under temperature stress. RESULTS:The AsA and folate composition and relative gene expression in sweet corn seedlings grown under different temperature stresses (10, 25, and 40 ∘ C) were evaluated. The imposition of temperature stress altered the AsA content mainly by modulating the expression of Zm DHAR, whose encoded enzyme dehydroascorbic reductase (DHAR) is essential in the AsA recycle pathway. Low temperature stress raised the expressions of relative genes, leading to folate accumulation. High temperature stress modulated the folate content by influencing the expression of the correspondence gene for aminodeoxychorismate synthase, Zm ADCS, as well as downstream genes that connected with DNA methylation. CONCLUSION: These results provided a theoretical basis, at a genetic level, for understanding the stress responses mechanism in sweet corn seedlings, offering guidance for sweet corn cultivation.

show abstract

Protective mechanisms of heat tolerance in crop plants

Cited by 77 publications

References 65 publications

Performance and Stability of Commercial Wheat Cultivars under Terminal Heat Stress

Performance and Stability of Commercial Wheat Cultivars under Terminal Heat Stress

Evaluation of Wheat Genotypes for Protective Mechanisms of Terminal Heat Stress

Effects of temperature stress on the accumulation of ascorbic acid and folates in sweet corn (Zea mays L.) seedlings

Contact Info

Product

Resources

About