The Arabidopsis thaliana ecotype Ct-1 achieves higher salt tolerance relative to Col-0 via higher tissue retention of K+ and NO3-

IF 4 3区 生物学 Q1 PLANT SCIENCES Journal of plant physiology Pub Date : 2024-08-03 DOI:10.1016/j.jplph.2024.154321
{"title":"The Arabidopsis thaliana ecotype Ct-1 achieves higher salt tolerance relative to Col-0 via higher tissue retention of K+ and NO3-","authors":"","doi":"10.1016/j.jplph.2024.154321","DOIUrl":null,"url":null,"abstract":"<div><p>Agriculture is vital for global food security, and irrigation is essential for improving crop yields. However, irrigation can pose challenges such as mineral scarcity and salt accumulation in the soil, which negatively impact plant growth and crop productivity. While numerous studies have focused on enhancing plant tolerance to high salinity, research targeting various ecotypes of <em>Arabidopsis thaliana</em> has been relatively limited. In this study, we aimed to identify salt-tolerant ecotypes among the diverse wild types of <em>Arabidopsis thaliana</em> and elucidate their characteristics at the molecular level. As a result, we found that Catania-1 (Ct-1), one of the ecotypes of Arabidopsis, exhibits greater salt tolerance compared to Col-0. Specifically, Ct-1 exhibited less damage from reactive oxygen species (ROS) than Col-0, despite not accumulating antioxidants like anthocyanins. Additionally, Ct-1 accumulated more potassium ions (K<sup>+</sup>) in its shoots and roots than Col-0 under high salinity, which is crucial for water balance and preventing dehydration. In contrast, Ct-1 plants were observed to accumulate slightly lower levels of Na<sup>+</sup> than Col-0 in both root and shoot tissues, regardless of salt treatment. These findings suggest that Ct-1 plants achieve high salinity resistance not by extruding more Na<sup>+</sup> than Col-0, but rather by absorbing more K<sup>+</sup> or releasing less K<sup>+</sup>. Ct-1 exhibited higher nitrate (NO<sub>3</sub><sup>-</sup>) levels than Col-0 under high salinity conditions, which is associated with enhanced retention of K<sup>+</sup> ions. Additionally, genes involved in NO<sub>3</sub><sup>-</sup> transport and uptake, such as <em>NRT1.5</em> and <em>NPF2.3</em>, showed higher transcript levels in Ct-1 compared to Col-0 when exposed to high salinity. However, Ct-1 did not demonstrate significantly greater resistance to osmotic stress compared to Col-0. These findings suggest that enhancing plant tolerance to salt stress could involve targeting the cellular processes responsible for regulating the transport of NO<sub>3</sub><sup>-</sup> and K<sup>+</sup>. Overall, our study sheds light on the mechanisms of plant salinity tolerance, emphasizing the importance of K<sup>+</sup> and NO<sub>3</sub><sup>-</sup> transport in crop improvement and food security in regions facing salinity stress.</p></div>","PeriodicalId":16808,"journal":{"name":"Journal of plant physiology","volume":null,"pages":null},"PeriodicalIF":4.0000,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of plant physiology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0176161724001524","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Agriculture is vital for global food security, and irrigation is essential for improving crop yields. However, irrigation can pose challenges such as mineral scarcity and salt accumulation in the soil, which negatively impact plant growth and crop productivity. While numerous studies have focused on enhancing plant tolerance to high salinity, research targeting various ecotypes of Arabidopsis thaliana has been relatively limited. In this study, we aimed to identify salt-tolerant ecotypes among the diverse wild types of Arabidopsis thaliana and elucidate their characteristics at the molecular level. As a result, we found that Catania-1 (Ct-1), one of the ecotypes of Arabidopsis, exhibits greater salt tolerance compared to Col-0. Specifically, Ct-1 exhibited less damage from reactive oxygen species (ROS) than Col-0, despite not accumulating antioxidants like anthocyanins. Additionally, Ct-1 accumulated more potassium ions (K+) in its shoots and roots than Col-0 under high salinity, which is crucial for water balance and preventing dehydration. In contrast, Ct-1 plants were observed to accumulate slightly lower levels of Na+ than Col-0 in both root and shoot tissues, regardless of salt treatment. These findings suggest that Ct-1 plants achieve high salinity resistance not by extruding more Na+ than Col-0, but rather by absorbing more K+ or releasing less K+. Ct-1 exhibited higher nitrate (NO3-) levels than Col-0 under high salinity conditions, which is associated with enhanced retention of K+ ions. Additionally, genes involved in NO3- transport and uptake, such as NRT1.5 and NPF2.3, showed higher transcript levels in Ct-1 compared to Col-0 when exposed to high salinity. However, Ct-1 did not demonstrate significantly greater resistance to osmotic stress compared to Col-0. These findings suggest that enhancing plant tolerance to salt stress could involve targeting the cellular processes responsible for regulating the transport of NO3- and K+. Overall, our study sheds light on the mechanisms of plant salinity tolerance, emphasizing the importance of K+ and NO3- transport in crop improvement and food security in regions facing salinity stress.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
与 Col-0 相比,拟南芥生态型 Ct-1 通过提高组织对 K+ 和 NO3 的保持能力而获得更高的耐盐性。
农业对全球粮食安全至关重要,而灌溉则是提高作物产量的关键。然而,灌溉可能带来矿物质匮乏和土壤盐分积累等挑战,对植物生长和作物产量产生负面影响。虽然大量研究都集中在提高植物对高盐度的耐受性上,但针对拟南芥不同生态型的研究却相对有限。在本研究中,我们旨在从拟南芥的不同野生型中识别耐盐生态型,并从分子水平阐明其特征。结果,我们发现拟南芥生态型之一的卡塔尼亚-1(Ct-1)与 Col-0 相比表现出更强的耐盐性。具体来说,尽管Ct-1没有积累花青素等抗氧化剂,但与Col-0相比,Ct-1受活性氧(ROS)的损害较小。此外,在高盐度条件下,Ct-1 的嫩枝和根部比 Col-0 积累了更多的钾离子(K+),而钾离子对水分平衡和防止脱水至关重要。相比之下,无论盐度处理如何,Ct-1 植物在根部和芽组织中积累的 Na+ 水平都略低于 Col-0。这些发现表明,Ct-1 植物不是通过比 Col-0 挤出更多的 Na+,而是通过吸收更多的 K+或释放更少的 K+来实现高抗盐性的。在高盐度条件下,Ct-1 表现出比 Col-0 更高的硝酸盐(NO3-)水平,这与 K+ 离子的保留能力增强有关。此外,在高盐度条件下,与 Col-0 相比,Ct-1 中涉及 NO3- 运输和吸收的基因(如 NRT1.5 和 NPF2.3)的转录水平更高。然而,与 Col-0 相比,Ct-1 对渗透胁迫的抗性并没有明显增强。这些研究结果表明,提高植物对盐胁迫的耐受性可能需要针对负责调节 NO3- 和 K+ 运输的细胞过程。总之,我们的研究揭示了植物耐盐性的机制,强调了 K+ 和 NO3- 运输在面临盐胁迫地区作物改良和粮食安全中的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of plant physiology
Journal of plant physiology 生物-植物科学
CiteScore
7.20
自引率
4.70%
发文量
196
审稿时长
32 days
期刊介绍: The Journal of Plant Physiology is a broad-spectrum journal that welcomes high-quality submissions in all major areas of plant physiology, including plant biochemistry, functional biotechnology, computational and synthetic plant biology, growth and development, photosynthesis and respiration, transport and translocation, plant-microbe interactions, biotic and abiotic stress. Studies are welcome at all levels of integration ranging from molecules and cells to organisms and their environments and are expected to use state-of-the-art methodologies. Pure gene expression studies are not within the focus of our journal. To be considered for publication, papers must significantly contribute to the mechanistic understanding of physiological processes, and not be merely descriptive, or confirmatory of previous results. We encourage the submission of papers that explore the physiology of non-model as well as accepted model species and those that bridge basic and applied research. For instance, studies on agricultural plants that show new physiological mechanisms to improve agricultural efficiency are welcome. Studies performed under uncontrolled situations (e.g. field conditions) not providing mechanistic insight will not be considered for publication. The Journal of Plant Physiology publishes several types of articles: Original Research Articles, Reviews, Perspectives Articles, and Short Communications. Reviews and Perspectives will be solicited by the Editors; unsolicited reviews are also welcome but only from authors with a strong track record in the field of the review. Original research papers comprise the majority of published contributions.
期刊最新文献
Alkaline tolerance in plants: The AT1 gene and beyond Developmental-specific regulation promotes the free amino acids accumulation in chlorotic tea plants (Camellia sinensis) SPOTLIGHT: Orchestrating nitrogen metabolism: Histone modifications and its interplay with the biological clock Tripartite interactions between grapevine, viruses, and arbuscular mycorrhizal fungi provide insights into modulation of oxidative stress responses Adaptive mechanisms of wheat cultivars to lead toxicity through enhanced oxidative defense, ionomic redistribution, and anatomical modifications
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1