Effect of Drought Stress on Crop Production

Iqbal, Mohammad Perwaiz; Singh, Akhilesh Kumar; Ansari, Mohammad Israil

doi:10.1007/978-981-15-1322-0_3

Cited by 60 publications

(44 citation statements)

References 66 publications

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“…Drought imposing water deficit stress leads to water scarcity, restricted growth, and yield in plants [ 23 , 46 , 47 ]. Water deficit stress sets a reduction in the plant water potential and turgor to the level that impairs the normal functioning of cells [ 45 ].…”

Section: Climate Change Triggers Abiotic Stress and Ros Generationmentioning

confidence: 99%

“…According to a World Bank report (2006), India ranks second among the most severely drought-affected Asian countries [ 48 ]. Due to drought, worldwide productivity has reduced by 21% in wheat and 40% in maize during the past few years [ 23 ]. Lee et al [ 49 ] have reported a decrease in dry mass, enhanced accumulation of ROS, and increased MDA content in white clover leaves under water deficit conditions.…”

Section: Climate Change Triggers Abiotic Stress and Ros Generationmentioning

confidence: 99%

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Abiotic Stress and Reactive Oxygen Species: Generation, Signaling, and Defense Mechanisms

et al. 2021

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Climate change is an invisible, silent killer with calamitous effects on living organisms. As the sessile organism, plants experience a diverse array of abiotic stresses during ontogenesis. The relentless climatic changes amplify the intensity and duration of stresses, making plants dwindle to survive. Plants convert 1–2% of consumed oxygen into reactive oxygen species (ROS), in particular, singlet oxygen (1O2), superoxide radical (O2•–), hydrogen peroxide (H2O2), hydroxyl radical (•OH), etc. as a byproduct of aerobic metabolism in different cell organelles such as chloroplast, mitochondria, etc. The regulatory network comprising enzymatic and non-enzymatic antioxidant systems tends to keep the magnitude of ROS within plant cells to a non-damaging level. However, under stress conditions, the production rate of ROS increases exponentially, exceeding the potential of antioxidant scavengers instigating oxidative burst, which affects biomolecules and disturbs cellular redox homeostasis. ROS are similar to a double-edged sword; and, when present below the threshold level, mediate redox signaling pathways that actuate plant growth, development, and acclimatization against stresses. The production of ROS in plant cells displays both detrimental and beneficial effects. However, exact pathways of ROS mediated stress alleviation are yet to be fully elucidated. Therefore, the review deposits information about the status of known sites of production, signaling mechanisms/pathways, effects, and management of ROS within plant cells under stress. In addition, the role played by advancement in modern techniques such as molecular priming, systems biology, phenomics, and crop modeling in preventing oxidative stress, as well as diverting ROS into signaling pathways has been canvassed.

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Section: Climate Change Triggers Abiotic Stress and Ros Generationmentioning

confidence: 99%

Section: Climate Change Triggers Abiotic Stress and Ros Generationmentioning

confidence: 99%

Abiotic Stress and Reactive Oxygen Species: Generation, Signaling, and Defense Mechanisms

et al. 2021

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“…Such morphological and physiological responses are visible at various phenological stages. Drought retards the expansion of roots, shoots and leaves, division, expansion and differentiation of cells, germination and seedling growth, resulting in reduced plant growth and biomass (Farooq et al, 2012; Iqbal et al, 2020). These vegetative complications are expected to confer productivity setbacks in the stressed plant.…”

Section: Drought‐induced Effects In Higher Plantsmentioning

confidence: 99%

Drought: Sensing, signalling, effects and tolerance in higher plants

Mukarram

Choudhary

Kurjak

et al. 2021

Physiologia Plantarum

145

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Drought can be considered as a cocktail of multiple stressful conditions that contribute to osmotic and ionic imbalance in plants. Considering that water is vital for plant life, the very survival of the plant becomes questionable during drought conditions. Water deficit affects a wide spectrum of morpho-physiological phenomena restricting overall plant growth, development and productivity. To evade such complications and ameliorate drought-induced effects, plants have a battery of various defence mechanisms. These mechanisms can vary from stomatal adjustments to osmotic adjustments and antioxidant metabolism to ion regulations. In this review, we critically evaluate how drought is perceived and signalled through the whole plant via abscisic acid mediated pathways. Additionally, the impact of drought on photosynthesis, gas exchange variables and reactive oxygen species pathway was also reviewed, along with the reversal of these induced effects through associated morpho-physiological counter mechanisms. | INTRODUCTIONAlthough drought threatens plant and animal kingdom alike, there is no unanimous scale that classify drought (Ault, 2020;Gupta et al., 2020). It is a shared understanding that organisms strive hard to meet their water demand during drought. This struggle could be fatal depending on the duration and severity of the drought. Considering plants cannot migrate from such environments, like their animal counterparts, they tend to take a heavier blow from the drought. Depending

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“…With the onset of drought, plants are investing much of the energy metabolism to withstand stress through a wide range of biochemical and morphological adaptations, which negatively impact plant development and productivity (Raja et al, 2020). Accordingly, DS impaired the normal distribution cycle of plant growth and development by affecting plant height and biomass production or, more specifically, via key physiological and biochemical functions, that is, stomatal conductivity, net photosynthesis and transpiration rate (Iqbal et al, 2020).…”

Section: Introductionmentioning

confidence: 99%