Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages

Soil salinity is a key source of abiotic stress in the cultivation of rice. In this study, two currently cultivated <i>japonica</i> rice species—Zhegeng 78 (salt-tolerant) and Zhegeng 99 (salt-sensitive)—with similar backgrounds were identified and used to investigate their differential...

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Autores principales:	Shenghai Ye, Zhibo Huang, Guibin Zhao, Rongrong Zhai, Jing Ye, Mingming Wu, Faming Yu, Guofu Zhu, Xiaoming Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Oryza sativa</i> salt stress Na<sup>+</sup>/K<sup>+</sup> homeostasis hydrogen peroxide seed germination seedling growth Botany QK1-989
Acceso en línea:	https://doaj.org/article/113143809cb74fd5ac75e874745478e6
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spelling	oai:doaj.org-article:113143809cb74fd5ac75e874745478e62021-11-25T18:46:33ZDifferential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages10.3390/plants101124332223-7747https://doaj.org/article/113143809cb74fd5ac75e874745478e62021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2433https://doaj.org/toc/2223-7747Soil salinity is a key source of abiotic stress in the cultivation of rice. In this study, two currently cultivated <i>japonica</i> rice species—Zhegeng 78 (salt-tolerant) and Zhegeng 99 (salt-sensitive)—with similar backgrounds were identified and used to investigate their differential responses to salt stress at the post-germination and seedling stages. Quantitative RT-PCR analysis demonstrated that the expression of <i>OsSOS1</i>, <i>OsHAK1</i>, and <i>OsHAK5</i> at the post-germination stage, and the expression of <i>OsHKT1,1</i>, <i>OsHTK2,1</i>, and <i>OsHAK1</i> at the seedling stage, were significantly higher in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. The significantly lower Na<sup>+</sup> net uptake rate at the post-germination and higher K<sup>+</sup> net uptake rates at the post-germination and seedling stages were observed in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. Significantly higher activity of peroxidase (POD) and the lower hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) accumulation were observed in the salt-tolerant Zhegeng 78 compared with those of salt-sensitive Zhegeng 99 under salt stress at the seeding stage. The salt-tolerant Zhegeng 78 might be valuable in future cultivation in salinity soils.Shenghai YeZhibo HuangGuibin ZhaoRongrong ZhaiJing YeMingming WuFaming YuGuofu ZhuXiaoming ZhangMDPI AGarticle<i>Oryza sativa</i>salt stressNa<sup>+</sup>/K<sup>+</sup> homeostasishydrogen peroxideseed germinationseedling growthBotanyQK1-989ENPlants, Vol 10, Iss 2433, p 2433 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Oryza sativa</i> salt stress Na<sup>+</sup>/K<sup>+</sup> homeostasis hydrogen peroxide seed germination seedling growth Botany QK1-989
spellingShingle	<i>Oryza sativa</i> salt stress Na<sup>+</sup>/K<sup>+</sup> homeostasis hydrogen peroxide seed germination seedling growth Botany QK1-989 Shenghai Ye Zhibo Huang Guibin Zhao Rongrong Zhai Jing Ye Mingming Wu Faming Yu Guofu Zhu Xiaoming Zhang Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
description	Soil salinity is a key source of abiotic stress in the cultivation of rice. In this study, two currently cultivated <i>japonica</i> rice species—Zhegeng 78 (salt-tolerant) and Zhegeng 99 (salt-sensitive)—with similar backgrounds were identified and used to investigate their differential responses to salt stress at the post-germination and seedling stages. Quantitative RT-PCR analysis demonstrated that the expression of <i>OsSOS1</i>, <i>OsHAK1</i>, and <i>OsHAK5</i> at the post-germination stage, and the expression of <i>OsHKT1,1</i>, <i>OsHTK2,1</i>, and <i>OsHAK1</i> at the seedling stage, were significantly higher in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. The significantly lower Na<sup>+</sup> net uptake rate at the post-germination and higher K<sup>+</sup> net uptake rates at the post-germination and seedling stages were observed in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. Significantly higher activity of peroxidase (POD) and the lower hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) accumulation were observed in the salt-tolerant Zhegeng 78 compared with those of salt-sensitive Zhegeng 99 under salt stress at the seeding stage. The salt-tolerant Zhegeng 78 might be valuable in future cultivation in salinity soils.
format	article
author	Shenghai Ye Zhibo Huang Guibin Zhao Rongrong Zhai Jing Ye Mingming Wu Faming Yu Guofu Zhu Xiaoming Zhang
author_facet	Shenghai Ye Zhibo Huang Guibin Zhao Rongrong Zhai Jing Ye Mingming Wu Faming Yu Guofu Zhu Xiaoming Zhang
author_sort	Shenghai Ye
title	Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
title_short	Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
title_full	Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
title_fullStr	Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
title_full_unstemmed	Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages
title_sort	differential physiological responses to salt stress between salt-sensitive and salt-tolerant <i>japonica</i> rice cultivars at the post-germination and seedling stages
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/113143809cb74fd5ac75e874745478e6
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Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant <i>japonica</i> Rice Cultivars at the Post-Germination and Seedling Stages

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