Drought Tolerance and Stress Hormones: From Model Organisms to Forage Crops

Aimar, Darío C.; Calafat, Mario Jose; Andrade, Andrea; Carassay, Luciano Raúl; Abdala, Guillermina; Molas, María Lía

doi:10.5772/24279

Cited by 8 publications

(4 citation statements)

References 149 publications

(145 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gain in weight is the result of carbon assimilation, which is lower in wilted tissues. Drought-induced suppression in photosynthesis and growth induce significant changes in important biochemical processes of plants [26]; in addition, the decrease in photosynthesis due to water stress is associated with interrupted enzyme activities, loss of membrane integrity and stomatal closure. In the 30 % blade, the situation of higher water deficit faced by plants, grain yield, dry matter weight and weight of 1000 grains had lower values.…”

Section: Resultsmentioning

confidence: 99%

Sources of Potassic Fertilization in Soybean Production under Different Irrigation Blades

Bianchini

Marques

2019

JEAI

View full text Add to dashboard Cite

Aims: The objective of this research was to evaluate the physiological and biometric parameters of the soybean crop in potassic fertilization sources under different irrigation blades. Two potassium sources (ground rock, “phonolite”, with 9% K2O and potassium chloride with 60% K2O) and five irrigation blades (30, 70, 100, 130 and 160% of the recommended blade) were used. Study Design: The experimental design was in randomized blocks, with ten treatments and four replications, in a 2 x 5 factorial scheme, totaling 40 vessels. Place and Duration of Study: Sample: Department of Agronomy, UNIFENAS, between March 2018 and November 2018. Methodology: Soil moisture was determined through tensiometers, using a water potential of -30kPa, considered adequate for the soybean crop. At the end of the crop cycle, the weight of shoot dry matter, weight of 1000 seeds, weight of seeds standardized to 13% moisture, total chlorophyll, chlorophyll a, chlorophyll b and carotenoids, besides nutrient content of the leaf tissue, were evaluated. Conclusion: KCl favors the accumulation of dry matter, weight of 1000 grains and grain production in the soybean crop in the different irrigation blades. Phonolite increases calcium and magnesium contents in the leaves, independently of the irrigation blade used, also favoring the increase in phosphorus and sulfur contents when soil moisture increases.

show abstract

Section: Resultsmentioning

confidence: 99%

Sources of Potassic Fertilization in Soybean Production under Different Irrigation Blades

Bianchini

Marques

2019

JEAI

View full text Add to dashboard Cite

show abstract

“…Drought stress at any stages of plant at the end of growing period, all different parts of plant send all their stored photosynthesis matters to seed, this lead to increase the weight of seeds and pods. In this study, drought stress decreased the weight of seeds per plant (Aimar et al, 2011). The reduction in seed weight per plant during drought stress might be due to less development of seeds under stress conditions, and a reduction indirectly of the photosynthesis and consumption of photosynthesis matters by increased the growing of the leaves compared with growing of seeds and pods (Mirzaei et al, 2013).…”

Section: Discussionmentioning

confidence: 70%

“…Drought stress is a multidimensional stress affecting plants at various levels of their organization (Farooq et al, 2020b). Thus, the effects of drought stress are often manifested at morphological, physiological, biochemical and Ali et al 1117 molecular level, such as inhibition of growth, accumulation of compatible organic solutes, changes in plant hormones endogenous contents (Aimar et al, 2011). In addition, drought stress causes alternations in physiology, growth and plant metabolism by disturbing plant water relations, enzyme activities, photosynthesis, membrane integrity and enhanced oxidative stress (Farooq et al, 2020b).…”

Section: Discussionmentioning

confidence: 99%

Effects of irrigation regimes at different growth stages on seed yield and yield components of two soybeans (Glycine max L. (Merr.)) varieties in semi-arid conditions

Adam,

Muhi,

Samia

2023

Afr. J. Agric. Res.

View full text Add to dashboard Cite

Water stress is the most limiting abiotic stress factor for soybean growth, development and production in semi-arid regions. The development of new soybean cultivars with high efficiency and ability to drought resistance is very important. Field experiment was conducted to investigated the impact of irrigation regimes at different growth stages (Full irrigation, irrigation regimes at vegetable growth, flowering, and pod full stages) on yield and yield components of two soybean varieties (1448 and Egyptian) under semi-arid regions. The results indicated that irrigation regimes had significant effect on most of traits except the weight of plant. The pod full stage higher affected by the drought than other stages on most of parameters tested. Irrigation regimes at pod full stage reduced the number of pods plant -1 by 38.4 and 26.0%, weight of pods plant -1 by 23.7 and 53.6%, number of seeds plant -1 by 29.0 and 28.8%, seeds weight plant -1 by 17.2 and 38.8%, 100-seeds weight by 35.3 and 38.1% for 1488 and Egyptian respectively. While, irrigation regimes at flowering stage decreased the weight of plant for Egyptian by 57.5% and seed yield by 24.4 and 31.2% for 1448 and Egyptian respectively as compared with same variety at full irrigation. Varieties had significant differences on plant weight, number of pods plant -1 , number of seeds plant -1 , harvest index, and seeds yield. In conclusion, the soybean cultivars used in this study were very sensitive to water stress. The 448 cultivar is recommended due to having higher seed yield and yield components in the study conditions.

show abstract

“…These phytohormones include ABA, salicylic acid (SA), ethylene (ET), cytokinins (CKs), gibberellin acid (GA), jasmonic acid (JA) and brassinosteroids (BRs) among others. Among these, ABA is the key and most extensively studied hormone that regulates drought resistance in plants [38,49]. ABA acts as the second messenger coordinating hormonal cross-talk between several stresses signaling cascades, thereby leading to adaptations to changing physiological and environmental conditions [50].…”

Section: Plants Drought Stress Responses and Resistance Mechanismsmentioning

confidence: 99%

Adapting Cereal Grain Crops to Drought Stress: 2020 and Beyond

Zenda¹,

Liu²,

Duan³

2021

Abiotic Stress in Plants

View full text Add to dashboard Cite

Among other environmental instabilities, drought stress is the primary limitation to cereal crops growth, development and productivity. In the context of continuing global climate change, breeding of drought resistant crop cultivars is the most economical, effective and sustainable strategy for adapting the crop production system and ensuring food security for the growing human population. Additionally, there is need for improving management practices. Whereas conventional breeding has sustained crop productivity gains in the past century, modern technological advancements have revolutionized our identification of important drought tolerance genes and underlying mechanisms, and accelerated new cultivar development. Large-scale high throughput sequencing, phenotyping, 'omics' and systems biology, as well as marker assisted and quantitative trait loci mapping based breeding approaches have offered significant insights into crop drought stress tolerance and provided some new tools for crop improvement. Despite this significant progress in elucidating the mechanisms underlying drought tolerance, considerable challenges remain and our understanding of the crop drought tolerance mechanisms is still abstract. In this chapter, therefore, we highlight current progress in the identification of drought tolerance genes and underlying mechanisms, as well as their practical applications. We then offer a holistic approach for cereal crops adaptation to future climate change exacerbated drought stress.

show abstract

Drought Tolerance and Stress Hormones: From Model Organisms to Forage Crops

Cited by 8 publications

References 149 publications

Sources of Potassic Fertilization in Soybean Production under Different Irrigation Blades

Sources of Potassic Fertilization in Soybean Production under Different Irrigation Blades

Effects of irrigation regimes at different growth stages on seed yield and yield components of two soybeans (Glycine max L. (Merr.)) varieties in semi-arid conditions

Adapting Cereal Grain Crops to Drought Stress: 2020 and Beyond

Contact Info

Product

Resources

About