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240508s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2024.108682
|2 doi
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|a pubmed24n1433.xml
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|a (DE-627)NLM372027539
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|a (NLM)38714133
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|a (PII)S0981-9428(24)00350-4
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|e rakwb
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|a eng
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|a Basu, Sahana
|e verfasserin
|4 aut
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|a Sub1 QTL confers submergence tolerance in rice through nitro-oxidative regulation and phytohormonal signaling
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 24.05.2024
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|a Date Revised 08.06.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 Elsevier Masson SAS. All rights reserved.
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|a Constant change in global climate has become the most important limiting factor to crop productivity. Asymmetrical precipitations are causing recurrent flood events around the world. Submergence is one of the most detrimental abiotic stresses for sustainable rice production in the rainfed ecosystems of Southeast Asia. Therefore, the development of submergence-tolerant rice is an essential requirement to encounter food security. Submergence tolerance in rice is governed by the major quantitative trait locus (QTL) designated as Submergence1 (Sub1) near the centromere of chromosome 9. The introduction of the Sub1 in high-yielding rice varieties producing near-isogenic lines (NILs) has shown extreme submergence tolerance. The present study aimed to understand the responses of rice genotype IR64 and its Sub1 NIL IR64 Sub1 following one week of complete submergence treatment. Submergence imposed severe nitro-oxidative stress in both the rice genotypes, consequently disrupting the cellular redox homeostasis. In this study, IR64 exhibited higher NADPH oxidase activity accompanied by increased reactive oxygen species, reactive nitrogen species, and malondialdehyde buildups and cell death under submergence. Higher accumulations of 1-Aminocyclopropane-1-carboxylic acid, gibberellic acid, and Indole-3-acetic acid were also observed in IR64 which accelerated the plant growth and root cortical aerenchyma development following submergence. In contrast, IR64 Sub1 had enhanced submergence tolerance associated with an improved antioxidant defense system with sustainable morpho-physiological activities and restricted root aerenchyma formation. The comprehensive analyses of the responses of rice genotypes with contrasting submergence tolerance may demonstrate the intricacies of rice under complete submergence and may potentially contribute to improving stress resilience by advancing our understanding of the mechanisms of submergence tolerance in rice
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|a Journal Article
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|a Antioxidant
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|a Phytohormone
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|a Reactive nitrogen species
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|a Reactive oxygen species
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|a Rice
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|a Submergence
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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|a Reactive Oxygen Species
|2 NLM
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| 700 |
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|a Monika
|e verfasserin
|4 aut
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| 700 |
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|a Kumari, Surbhi
|e verfasserin
|4 aut
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| 700 |
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|a Kumar, Gautam
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 211(2024) vom: 28. Juni, Seite 108682
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:211
|g year:2024
|g day:28
|g month:06
|g pages:108682
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|u http://dx.doi.org/10.1016/j.plaphy.2024.108682
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