An insight into drought stress and signal transduction of abscisic acid

Abstract

The sustainable crop production is one of the major issue in the era of urbanization, industrialization, and globalization. In the environment, there are number of abiotic and biotic factors which are hampering the sustainable production of crops. The drought is one of the constraints which directly/indirectly affects the crop yield. It has various negative effects on the normal physiology and biochemistry of the plants. Therefore, researchers must have to work in the field of developing drought-tolerant crop plants to meet the food needs of the exponentially growing population of the world. The present study is the outcome of an extensive literature survey on the basic perturbations of drought to the crops, role of abscisic acid (ABA) in stressful conditions and its signal transduction.

Terminal drought and heat stress alter physiological and biochemical attributes in flag leaf of bread wheat

“…The extract obtained from sample was centrifuged (12000 × g) for 5 min to separate the supernatant and was stored for determination of the total of soluble proteins by following Bradford assay [31]. Bovine serum albumin with different dilutions (10,20,30,40,50,60,70,80, 90 and 100 μg μL -1 ) was used to construct standard curves. After adding 400 μL deionized water and Dye stock, sample tubes were vortexed and incubated at room temperature for 30 minutes followed by recording of the sample absorbance using UV 4000 UV-VIS spectrophotometer.…”

“…The significant decrease in pigment contents was due to exposure of drought and heat stresses, while reduction was increased under combined stresses. The photo-inhibition and photo-destruction of pigments and related protein complexes, and disruption of photosynthetic membrane both are caused by drought stress [39,40]. Decreased chlorophyll content under drought stress is usually attributed to the destruction of various enzymes involved in the synthesis of chlorophyll and enhanced activity of enzymes that degrade the chlorophyll content [39,41], while heat stress causes reduction in chlorophyll content by destroying thylakoid membranes [42,43].…”

Nanoparticles: An Emerging Soil Crops Saviour under Drought and Heavy Metal Stresses

“…The ecosystem and public health are at risk due to industrial sector toxic element emissions into the air, water, and soil, and ongoing urbanization (Liu et al 2022). HMs in soil, which is difficult to degrade, are extremely poisonous to the surroundings and human health (Kumari et al 2018). Owing to their highly reactive oxidative states, HMs can alter plant physiology by deactivating enzymes, denaturing proteins, replacing essential metals, and destroying membranes (Salehi-Lisar et al 2016).…”

The Significance Of Nanomaterials In Enhancing Soil Microbial Communitya Short Review

“…A significant environmental element that slows plant development and reduces plant production is drought stress (Kumari et al, 2018). By reducing oxidative stress, increasing photosynthetic enzymatic activity, and other factors, nano fertilizers effectively outperformed control plants (2000 mg kg1).…”