Recent Insights into Signaling Responses to Cope Drought Stress in Rice

Aslam, Muhammad Mahran; Rashid, Muhammad Abdul Rehman; Siddiqui, M. A.; Khan, Muhammad Tahir; Farhat, Fozia; Yasmeen, Shafquat; Khan, Imtiaz Ahmad; Raja, Shameem; Rasool, Fatima; Sial, Mahboob Ali; Zhao, Yan

doi:10.1016/j.rsci.2021.08.001

Cited by 30 publications

(23 citation statements)

References 95 publications

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“…A wide range of studies have proven the viability of exogenous application of materials that are already involved in several endogenous metabolic process of the organism, i.e., melatonin, polyamines, phytohormones, etc. against abiotic stresses [ 28 ]. Similarly, NAC has been utilized in pharmaceutical drugs and nutritional supplement against various diseases due to its role as a free radical scavenger and chelating agent [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

N-Acetylcysteine Priming Alleviates the Transplanting Injury of Machine-Transplanted Rice by Comprehensively Promoting Antioxidant and Photosynthetic Systems

Zhong

et al. 2022

Plants

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The stress of transplanting injury adversely affects rice growth and productivity worldwide. N-acetylcysteine (NAC), the precursor of glutathione, is a potent ROS scavenger with powerful antioxidant activity. Previous studies on the application of NAC in plants mainly focused on alleviating the stress of heavy metals, UV-B, herbicides, etc. However, the role of NAC in alleviating transplanting injury is still not clear. A barrel experiment was carried out to explain the mechanism of NAC regulating the transplanting injury to machine-transplanted rice during the recovery stage. The results showed that NAC priming shortened the time of initiation of tillering and increased the tiller numbers within 3 weeks after transplanting. In addition, NAC priming increased the chlorophyll content, net photosynthetic rate, and sucrose content, thereby improving the dry weight at the recovery stage, especially root dry weight. At the same time, NAC priming significantly increased the activity of ascorbate peroxidase (APX), glutathione reductase (GR), catalase (CAT), and superoxide dismutase (SOD). In addition, it also regulated flavonoids and total phenols contents to reduce hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents, especially at the initial days after transplanting. These results suggest that NAC priming improves the tolerance of rice seedlings against transplanting injury by enhancing photosynthesis and antioxidant systems at initial days after transplanting, thereby promoting the accumulation of dry matter and tillering for higher yield returns.

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Section: Discussionmentioning

confidence: 99%

N-Acetylcysteine Priming Alleviates the Transplanting Injury of Machine-Transplanted Rice by Comprehensively Promoting Antioxidant and Photosynthetic Systems

Zhong

et al. 2022

Plants

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“…During adverse environmental challenges such as drought, ROS are generated in plants. Increased ROS production causes several damage within the plant cell due to its activities such as nucleic acids, and membrane lipids, consequently undermining plant growth and productivity (Aslam et al, 2022). ROS are considered very harmful and toxic to plants because they disrupt the normal activities and structure of the biomolecules.…”

Section: Biochemical Responses Of Rice Under Droughtmentioning

confidence: 99%

“…The plant generates some defense systems known as antioxidative enzymes and non-enzymes to counteract ROS accumulation and prevent oxidative stress and damage in the plant. The main scavenger is the superoxide dismutase (SOD) enzyme, which converts O 2 to H 2 O 2 (Aslam et al, 2022). Under adverse environmental stress conditions, ascorbate peroxidase and carotenes are also important for scavenging ROS in the plant (Tiwari et al, 2021).…”

Section: Biochemical Responses Of Rice Under Droughtmentioning

confidence: 99%

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Oyebamiji

Shamsudin²,

Ikmal³

et al. 2022

Egypt. J. Agron.

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Egyptian Journal of Agronomy http://agro.journals.ekb.eg/ Review 9 R ICE (Oryza sativa L.) is considered the major source of calories for more than half of the world's population. However, this Asian staple crop is susceptible to abiotic stress, including drought, throughout its life cycle. The main theme covered in this review includes types of drought and its effects on rice morphological, physiological, biochemical, and agronomical levels and their adaptive mechanisms under drought. Drought in the rainfed ecosystem during critical stages (germination and reproductive stages) has seriously undermined rice production, posing a danger to global food supply and sustainable food production worldwide. It caused a reduction in the germination rate, CO 2 assimilation rate, photosynthesis activities, gas exchange via the leaf, plant height, number of panicles, seed weight, biomass, harvest index, and yield. Delayed seed germination, flowering, and maturity of the rice plant are also associated with water stress. Under mild or adverse drought conditions, plants exhibit certain adaptive changes or tolerance mechanisms, including activating antioxidant systems and the production of osmolytes such as proline and polyamine, subsequently enhancing drought tolerance. The role of phytohormones in alleviating stress has been recognized and highlighted in this review. Furthermore, the plant root system also plays a significant role in drought. The information provided in this review will help researchers to have comprehensive knowledge and understanding of the changes and disruptions that occur in rice during water stress and its tolerance mechanisms, subsequently facilitating the selection and development of droughttolerant rice.

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“…These newly developed stresstolerant rice varieties can mitigate stress-induced plant growth and productivity inhibition (Abid et al, 2018). Overall, developing stress-tolerant rice genotypes is an economically viable and sustainable strategy for enhancing rice production to meet the rising demand for rice (Pandey and Shukla, 2015;Aslam et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

et al. 2023

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Water scarcity is a crucial environmental stress that constrains rice growth and production. Thus, breeding for developing high-yielding and drought-tolerant rice genotypes is decisive in sustaining rice production and ensuring global food security, particularly under stress conditions. To this end, this study was conducted to evaluate the effects of water deficit on 31 genotypes of rice (seven lines, viz., Puebla, Hispagran, IET1444, WAB1573, Giza177, Sakha101, and Sakha105, and three testers, viz., Sakha106, Sakha107, and Sakha108) and their 21 crosses produced by line × tester mating design under normal and water deficit conditions; this was to estimate the combining ability, heterosis, and gene action for some traits of physiological, biochemical, and yield components. This study was performed during the summer seasons of 2017 and 2018. The results showed that water deficit significantly decreased relative water content, total chlorophyll content, grain yield, and several yield attributes. However, osmolyte (proline) content and antioxidant enzyme activities (CAT and APX) were significantly increased compared with the control condition. Significant mean squares were recorded for the genotypes and their partitions under control and stress conditions, except for total chlorophyll under normal irrigation. Significant differences were also detected among the lines, testers, and line × tester for all the studied traits under both irrigation conditions. The value of the σ²GCA variance was less than the value of the σ²SCA variance for all the studied traits. In addition, the dominance genetic variance (σ2D) was greater than the additive genetic variance (σ2A) in controlling the inheritance of all the studied traits under both irrigation conditions; this reveals that the non-additive gene effects played a significant role in the genetic expression of the studied traits. The two parental genotypes (Puebla and Hispagran) were identified as good combiners for most physiological and biochemical traits, earliness, shortness, grain yield, and 1,000-grains weight traits. Additionally, the cross combinations Puebla × Sakha107, Hispagran × Sakha108, and Giza177 × Sakha107 were the most promising. These results demonstrated the substantial and desirable specific combining ability effects on all the studied traits, which suggested that it could be considered for use in rice hybrid breeding programs.

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Recent Insights into Signaling Responses to Cope Drought Stress in Rice

Cited by 30 publications

References 95 publications

N-Acetylcysteine Priming Alleviates the Transplanting Injury of Machine-Transplanted Rice by Comprehensively Promoting Antioxidant and Photosynthetic Systems

N-Acetylcysteine Priming Alleviates the Transplanting Injury of Machine-Transplanted Rice by Comprehensively Promoting Antioxidant and Photosynthetic Systems

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

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