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Insights into nitric oxide-mediated water balance, antioxidant defence and mineral homeostasis in rice (Oryza sativa L.) under chilling stress
AAM. Sohag, M. Tahjib-Ul-Arif, S. Afrin, MK. Khan, MA. Hannan, M. Skalicky, MG. Mortuza, M. Brestic, MA. Hossain, Y. Murata,
Language English Country United States
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Nitric Oxide Donors pharmacology MeSH
- Homeostasis drug effects MeSH
- Germination drug effects MeSH
- Malondialdehyde metabolism MeSH
- Nitroprusside pharmacology MeSH
- Cold Temperature MeSH
- Crop Protection methods MeSH
- Nitric Oxide metabolism MeSH
- Hydrogen Peroxide metabolism MeSH
- Lipid Peroxidation drug effects MeSH
- Peroxidases metabolism MeSH
- Cold-Shock Response physiology MeSH
- Oryza drug effects MeSH
- Seedlings drug effects MeSH
- Superoxides metabolism MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Being a chilling-sensitive staple crop, rice (Oryza sativa L.) is vulnerable to climate change. The competence of rice to withstand chilling stress should, therefore, be enhanced through technological tools. The present study employed chemical intervention like application of sodium nitroprusside (SNP) as nitric oxide (NO) donor and elucidated the underlying morpho-physiological and biochemical mechanisms of NO-mediated chilling tolerance in rice plants. At germination stage, germination indicators were interrupted by chilling stress (5.0 ± 1.0 °C for 8 h day-1), while pretreatment with 100 μM SNP markedly improved all the indicators. At seedling stage (14-day-old), chilling stress caused stunted growth with visible toxicity along with alteration of biochemical markers, for example, increase in oxidative stress markers (superoxide, hydrogen peroxide, and malondialdehyde) and osmolytes (total soluble sugar; proline and soluble protein content, SPC), and decrease in chlorophyll (Chl), relative water content (RWC), and antioxidants. However, NO application attenuated toxicity symptoms with improving growth attributes which might be related to enhance activities of antioxidants, mineral contents, Chl, RWC and SPC. Furthermore, principal component analysis indicated that water imbalance and increased oxidative damage were the main contributors to chilling injury, whereas NO-mediated mineral homeostasis and antioxidant defense were the critical determinants for chilling tolerance in rice. Collectively, our findings revealed that NO protects against chilling stress through valorizing cellular defense mechanisms, suggesting that exogenous application of NO could be a potential tool to evolve cold tolerance as well as climate resilience in rice.
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- $a Sohag, Abdullah Al Mamun $u Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh. Electronic address: sohag2010bmb.sust@gmail.com.
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- $a Being a chilling-sensitive staple crop, rice (Oryza sativa L.) is vulnerable to climate change. The competence of rice to withstand chilling stress should, therefore, be enhanced through technological tools. The present study employed chemical intervention like application of sodium nitroprusside (SNP) as nitric oxide (NO) donor and elucidated the underlying morpho-physiological and biochemical mechanisms of NO-mediated chilling tolerance in rice plants. At germination stage, germination indicators were interrupted by chilling stress (5.0 ± 1.0 °C for 8 h day-1), while pretreatment with 100 μM SNP markedly improved all the indicators. At seedling stage (14-day-old), chilling stress caused stunted growth with visible toxicity along with alteration of biochemical markers, for example, increase in oxidative stress markers (superoxide, hydrogen peroxide, and malondialdehyde) and osmolytes (total soluble sugar; proline and soluble protein content, SPC), and decrease in chlorophyll (Chl), relative water content (RWC), and antioxidants. However, NO application attenuated toxicity symptoms with improving growth attributes which might be related to enhance activities of antioxidants, mineral contents, Chl, RWC and SPC. Furthermore, principal component analysis indicated that water imbalance and increased oxidative damage were the main contributors to chilling injury, whereas NO-mediated mineral homeostasis and antioxidant defense were the critical determinants for chilling tolerance in rice. Collectively, our findings revealed that NO protects against chilling stress through valorizing cellular defense mechanisms, suggesting that exogenous application of NO could be a potential tool to evolve cold tolerance as well as climate resilience in rice.
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- $a Tahjib-Ul-Arif, Md $u Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh; Graduate School of Environmental and Life Science, Okayama University, Kita-ku, Okayama, 700-8530, Japan. Electronic address: tahjib@bau.edu.bd.
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- $a Afrin, Sonya $u Graduate School of Environmental and Life Science, Okayama University, Kita-ku, Okayama, 700-8530, Japan. Electronic address: sonya.bau288@gmail.com.
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- $a Khan, Md Kawsar $u Department of Biochemistry and Molecular Biology, Shahjalal University of Science & Technology, Sylhet, 3114, Bangladesh. Electronic address: bmbkawsar@gmail.com.
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- $a Brestic, Marian $u Department of Botany and Plant Physiology, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences, 16500, Prague, Czech Republic; Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, 94976, Nitra, Slovakia. Electronic address: marian.brestic@uniag.sk.
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