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Comparative analysis of physiological, enzymatic, and genetic responses revealed the differences in salt tolerance between two rice varieties at the seedling stage

https://hiroshima.repo.nii.ac.jp/records/2008834
https://hiroshima.repo.nii.ac.jp/records/2008834
97dba39e-3eed-4b05-83be-4d7fc035fda0
名前 / ファイル ライセンス アクション
SAJB_170_145.pdf SAJB_170_145.pdf (1.1 MB)
 Download is available from 2026/5/18.
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2025-01-14
タイトル
タイトル Comparative analysis of physiological, enzymatic, and genetic responses revealed the differences in salt tolerance between two rice varieties at the seedling stage
言語 en
作成者 Mekawy, Ahmad Mohammad M.

× Mekawy, Ahmad Mohammad M.

en Mekawy, Ahmad Mohammad M.

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Assaha, Dekoum V.M.

× Assaha, Dekoum V.M.

en Assaha, Dekoum V.M.

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Jiacheng, Li

× Jiacheng, Li

en Jiacheng, Li

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Ueda, Akihiro

× Ueda, Akihiro

en Ueda, Akihiro

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アクセス権
アクセス権 embargoed access
アクセス権URI http://purl.org/coar/access_right/c_f1cf
権利情報
言語 en
権利情報 © 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
権利情報
言語 en
権利情報 This is not the published version. Please cite only the published version.
権利情報
言語 ja
権利情報 この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
主題
言語 en
主題Scheme Other
主題 Salt stress
主題
言語 en
主題Scheme Other
主題 Proline accumulation
主題
言語 en
主題Scheme Other
主題 Antioxidant enzymes
主題
言語 en
主題Scheme Other
主題 Gene expression
内容記述
内容記述 Salt stress remains a global problem affecting agricultural production, and the elucidation of stress tolerance mechanisms in crops, such as rice, can provide essential information to breeders to generate improved cultivars capable of withstanding environmental challenges. Therefore, this study aimed to evaluate the tolerance mechanisms of two rice cultivars with different salinity tolerance. The rice cultivars, Sakha Super 300 (SS300, tolerant) and Blue Bonnet 76 (BB76, sensitive), were subjected to 0 and 100 mM NaCl (control and salt stress, respectively) for 14 days. Subsequently, growth indices (dry weight and plant length), physiological parameters (Na+ and K+ concentrations, secondary metabolites, enzyme activities, and chlorophyll and carotenoid concentrations), and the expression of Na+ and K+ transport-coding genes were determined. The results showed that the dry weight (DW) of SS300 was not significantly altered by salt stress, whereas that of BB76 decreased by 1.8 folds. The leaf Na+ concentration in SS300 (15.3 mg/g DW) was less than that of BB76 (23.7 mg/g DW), whereas the ratio of Na+/K+ was significantly higher in BB76 than in SS300 leaves. The leaf proline concentration of BB76 was 23-fold that of control and 9-fold that of SS300, whereas total flavonoid increased only in the leaves of SS300 (38 % increase). Regarding antioxidant enzyme activities, peroxidase (POD) significantly declined (2.7-fold) in the leaves of BB76 but remained unchanged in SS300. Regarding gene expression, there was 21- and 10-fold upregulation of OsHKT1;5 expression in the roots of SS300 and BB76, respectively, whereas root OsAKT1 and OsHAK7 were induced only in SS300 (2.3 and 2-fold induction, respectively). These results suggest that the susceptibility of BB76 to salt stress is likely attributed to the utilization of more energy for osmolyte synthesis, and reduced antioxidants and Na+ and K+ regulation.
言語 en
内容記述
内容記述タイプ Other
内容記述 AMMM extends his appreciation to the Academy of Scientific Research and Technology (ASRT, Egypt) for funding the Graduation Projects conducted at Laboratory of Plant Nutritional Physiology, Minia University, Egypt.
言語 en
出版者
出版者 Elsevier
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.sajb.2024.05.023
助成情報
助成機関名 日本学術振興会
言語 ja
研究課題番号URI https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20KK0129/
研究課題番号 20KK0129
研究課題名 タイの塩・アルカリ水田で栽培可能な耐性イネ系統の創出
言語 ja
助成情報
助成機関名 Japan Society for the Promotion of Science
言語 en
研究課題名 タイの塩・アルカリ水田で栽培可能な耐性イネ系統の創出
言語 ja
開始ページ
開始ページ 145
書誌情報 en : South African Journal of Botany

巻 170, p. 145-155, 発行日 2024-05-18
旧ID 56110
備考 The full-text file will be made open to the public on 18 May 2026 in accordance with publisher's 'Terms and Conditions for Self-Archiving'
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