Redox imbalance impedes photosynthetic activity in rice by disrupting cellular membrane integrity and induces programmed cell death under submergence

Basu, Saumik; Kumari, Surbhi; Kumar, Pankaj; Kumar, Gautam; Rajwanshi, Ravi

doi:10.1111/ppl.13387

Cited by 27 publications

(13 citation statements)

References 62 publications

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“…Li and Li (2018) found that the soluble sugar content in the stem of bermudagrass was also significantly decreased under shallow submergence (above the soil 10 cm) and under deep submergence (above the soil 2 m) [ 17 ], whereas the soluble sugar content in the root of bermudagrass increased under shallow submergence and decreased under deep submergence. Meanwhile, due to the low-oxygen content and slow diffusion rate in the flooding environment, aerobic respiration of plants becomes limited [ 18 , 19 , 20 ], which results in a limited supply of energy for nutrient uptake and transport [ 21 ]. A former study documented that ethanol dehydrogenase activity in bermudagrass roots increased under submergence and increased submergence depth [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass (Cynodon dactylon) under Different Submergence Stress

Yuan

Arif

et al. 2021

IJMS

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Submergence impedes photosynthesis and respiration but facilitates aerenchyma formation in bermudagrass. Still, the regulatory genes underlying these physiological responses are unclear in the literature. To identify differentially expressed genes (DEGs) related to these physiological mechanisms, we studied the expression of DEGs in aboveground and underground tissues of bermudagrass after a 7 d treatment under control (CK), shallow submergence (SS), and deep submergence (DS). Results show that compared with CK, 12276 and 12559 DEGs were identified under SS and DS, respectively. Among them, the DEGs closely related to the metabolism of chlorophyll biosynthesis, light-harvesting, protein complex, and carbon fixation were down-regulated in SS and DS. Meanwhile, a large number of DEGs involved in starch and sucrose hydrolase activities, glycolysis/gluconeogenesis, tricarboxylic acid (TCA) cycle, and oxidative phosphorylation were down-regulated in aboveground tissues of bermudagrass in SS and DS. Whereas in underground tissues of bermudagrass these DEGs were all up-regulated under SS, only beta-fructofuranosidase and α-amylase related genes were up-regulated under DS. In addition, we found that DEGs associated with ethylene signaling, Ca2+-ROS signaling, and cell wall modification were also up-regulated during aerenchyma formation in underground tissues of bermudagrass under SS and DS. These results provide the basis for further exploration of the regulatory and functional genes related to the adaptability of bermudagrass to submergence.

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Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass (Cynodon dactylon) under Different Submergence Stress

Yuan

Arif

et al. 2021

IJMS

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“…Membrane stability index (MSI) was calculated following the equation proposed by Basu et al (2021a).…”

Section: Determination Of Electrolyte Leakage and Membrane Stability ...mentioning

confidence: 99%

“…Accumulation of superoxide anion ( • O 2 − ), singlet oxygen (O 2 * ), hydrogen peroxide (H 2 O 2 ), hydroxide ion (OH − ) induced by water stress triggers membrane lipid peroxidation and cell death (Basu et al 2021a).…”

Section: Introductionmentioning

confidence: 99%

Micronutrient and redox homeostasis contribute to Moringa oleifera-regulated drought tolerance in wheat

et al. 2022

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Global food security is being severely affected by rapid increase in population and drastic climate change. With the changing climate, drought stress has become the most important limiting factor for sustainable production of several important agricultural crops, including wheat. Gradual rise in temperature and reduced precipitations are likely to cause frequent onset of droughts around the world.Therefore, alleviation of drought stress in crop plants has become an essential requirement to meet the increasing food demand. The present study explored the role of foliar application of Moringa leaf extract (MLE) in conferring drought tolerance in wheat during the anthesis stage. The results showed that MLE treatment improved the concentration of the macro-(K, Ca) and micronutrients (Cu, Fe, Na, Mn, Zn, Si) in ag-leaves of wheat under non-stressed conditions and also maintained their concentrations under drought stress. The micro-nutrients (Cu, Fe, Mn, Zn) being the co-factors of the enzymes also stimulated the antioxidant enzyme activities, eventually leading to signi cant reduction in the reactive oxygen species (ROS) and malondialdehyde (MDA) accumulations under drought stress. Furthermore, micronutrients played a crucial role in osmoregulation and sustainable plant growth under drought stress.Overall, the study provided insights into the functional role of micronutrients in improving drought tolerance and also indicated the potential to commercialize MLE as an effective bio-stimulant for sustainable agriculture in drought prone regions.

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“…Plant extract containing equal concentrations of proteins were run on SDS-PAGE along with a pre-stained marker (Basu et al 2021). The proteins were blotted with trans-blot membrane (Bio Rad) followed by blocking with skimmed milk.…”

Section: Western Blottingmentioning

confidence: 99%

Nitro‐oxidative stress induces the formation of roots' cortical aerenchyma in rice under osmotic stress

Basu

Kumari

Kumar

et al. 2021

Physiologia Plantarum

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Drought stress induces the formation of cortical aerenchyma in roots, providing drought tolerance by reducing respiration. However, unrestricted aerenchyma formation impedes the radial transport of water through the root's central cylinder; thereby decreasing the water uptake under drought stress. Therefore, exploring the root architectural and anatomical alterations in rice under drought is essential for targeting crop improvement. Drought stress-induced accumulation of reactive oxygen species (ROS) plays a key role in the lysigenous aerenchyma development. However, the influence of nitric oxide (NO) and reactive nitrogen species (RNS) in the development of lysigenous aerenchyma under drought has never been studied in rice. The present study examined the effect of ROS and RNS, generated by progressive drought stress, on the lysigenous aerenchyma formation in the roots of contrasting rice genotypes of the Eastern Indo-Gangetic plains (EIGP). As expected, the PEG-induced drought stress stimulated the expression of NADPH oxidase (NOX), thereby promoting the ROS generation in roots of the rice seedlings. Excessive ROS and RNS accumulations in roots affected the membrane lipids, promoting the tissue-specific programmed cell death (PCD) in rice. The activation of the antioxidant defense system played a major role in the ROS and RNS detoxification, thereby restricting the root aerenchyma formation in rice under drought stress. The results also displayed that drought tolerance in rice is associated with the formation of the Casparian strip, which limits the apoplastic flow of water in the water-deficient roots. Overall, our study revealed the association of nitro-oxidative metabolism with PCD and lysigenous aerenchyma formation in the cortical cells of root under drought stress in rice.

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Redox imbalance impedes photosynthetic activity in rice by disrupting cellular membrane integrity and induces programmed cell death under submergence

Cited by 27 publications

References 62 publications

Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass (Cynodon dactylon) under Different Submergence Stress

Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass (Cynodon dactylon) under Different Submergence Stress

Micronutrient and redox homeostasis contribute to Moringa oleifera-regulated drought tolerance in wheat

Nitro‐oxidative stress induces the formation of roots' cortical aerenchyma in rice under osmotic stress

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