Biochar effects on drought tolerance in maize roots are linked to K+ concentration, Ca2+ efflux, and apoplastic pH

IF 3.5 3区 生物学 Q1 PLANT SCIENCES Plant Growth Regulation Pub Date : 2023-12-28 DOI:10.1007/s10725-023-01104-y
Renjie Ruan, Yue Yuan, Chao Wang, Yaosheng Wang
{"title":"Biochar effects on drought tolerance in maize roots are linked to K+ concentration, Ca2+ efflux, and apoplastic pH","authors":"Renjie Ruan, Yue Yuan, Chao Wang, Yaosheng Wang","doi":"10.1007/s10725-023-01104-y","DOIUrl":null,"url":null,"abstract":"<p>Biochar amendment is a management strategy to alleviate drought stress in plants. However, in-depth assessments are needed to elucidate how biochar amendment affects root growth by modulating various physiological and biochemical changes under drought stress. In this study, we investigated ion fluxes, metabolic levels, and physiological traits of maize roots in biochar-amended soil under drought stress using noninvasive micro-test technology, metabolomics profiling, and ratiometric fluorescence. The results revealed that the biochar treatment increased soil K<sup>+</sup> supply and root sap K<sup>+</sup> concentration, but decreased root Ca<sup>2+</sup> efflux under moderate drought stress, compared to the no biochar treatment. Root apoplastic pH and abscisic acid content increased significantly in the biochar treatment under severe drought stress. Consequently, root osmolality and root malonaldehyde content decreased, whereas root water potential, root ascorbate peroxidase activity, and plant fresh weight increased in the biochar treatment under severe drought stress. In addition, the biochar treatment enhanced the accumulation of trehalose and 3-hydroxyanthranilic acid in response to moderate and severe drought stress while reducing the levels of uridine, cytidine, guanosine, <span>l</span>-tryptophan, and <span>l</span>-glutamine in maize roots. These results indicate that the biochar-mediated improvements in plant drought tolerance were associated with increased K<sup>+</sup> concentration, less Ca<sup>2+</sup> efflux, and an increase in apoplastic pH in maize roots.</p>","PeriodicalId":20412,"journal":{"name":"Plant Growth Regulation","volume":"6 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Growth Regulation","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s10725-023-01104-y","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

Biochar amendment is a management strategy to alleviate drought stress in plants. However, in-depth assessments are needed to elucidate how biochar amendment affects root growth by modulating various physiological and biochemical changes under drought stress. In this study, we investigated ion fluxes, metabolic levels, and physiological traits of maize roots in biochar-amended soil under drought stress using noninvasive micro-test technology, metabolomics profiling, and ratiometric fluorescence. The results revealed that the biochar treatment increased soil K+ supply and root sap K+ concentration, but decreased root Ca2+ efflux under moderate drought stress, compared to the no biochar treatment. Root apoplastic pH and abscisic acid content increased significantly in the biochar treatment under severe drought stress. Consequently, root osmolality and root malonaldehyde content decreased, whereas root water potential, root ascorbate peroxidase activity, and plant fresh weight increased in the biochar treatment under severe drought stress. In addition, the biochar treatment enhanced the accumulation of trehalose and 3-hydroxyanthranilic acid in response to moderate and severe drought stress while reducing the levels of uridine, cytidine, guanosine, l-tryptophan, and l-glutamine in maize roots. These results indicate that the biochar-mediated improvements in plant drought tolerance were associated with increased K+ concentration, less Ca2+ efflux, and an increase in apoplastic pH in maize roots.

Abstract Image

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
生物碳对玉米根系耐旱性的影响与 K+ 浓度、Ca2+ 外流和根细胞 pH 值有关
生物炭改良是减轻植物干旱胁迫的一种管理策略。然而,需要进行深入评估,以阐明生物炭改良剂如何通过调节干旱胁迫下的各种生理生化变化来影响根系生长。在本研究中,我们利用无创微测技术、代谢组学分析和比率荧光法研究了干旱胁迫下生物炭改良土壤中玉米根系的离子通量、代谢水平和生理特征。结果表明,与无生物炭处理相比,在中度干旱胁迫下,生物炭处理增加了土壤K+供应和根汁液K+浓度,但减少了根Ca2+外流。在严重干旱胁迫下,生物炭处理的根系凋落物 pH 值和赤霉酸含量显著增加。因此,在严重干旱胁迫下,生物炭处理的根渗透压和根丙二醛含量降低,而根水势、根抗坏血酸过氧化物酶活性和植株鲜重增加。此外,在中度和重度干旱胁迫下,生物炭处理增强了玉米根中三卤糖和 3-羟基黄腐酸的积累,同时降低了玉米根中尿苷、胞苷、鸟苷、l-色氨酸和 l-谷氨酰胺的含量。这些结果表明,生物炭介导的植物耐旱性的提高与玉米根中 K+浓度的增加、Ca2+外流的减少以及凋亡体 pH 值的增加有关。
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
Plant Growth Regulation
Plant Growth Regulation 生物-植物科学
CiteScore
6.90
自引率
9.50%
发文量
139
审稿时长
4.5 months
期刊介绍: Plant Growth Regulation is an international journal publishing original articles on all aspects of plant growth and development. We welcome manuscripts reporting question-based research using hormonal, physiological, environmental, genetical, biophysical, developmental or molecular approaches to the study of plant growth regulation. Emphasis is placed on papers presenting the results of original research. Occasional reviews on important topics will also be welcome. All contributions must be in English.
期刊最新文献
Plant growth-promoting rhizobacteria biochemical pathways and their environmental impact: a review of sustainable farming practices Beyond the surface: delving into plant signaling during flooding stress The cross-talk of brassinosteroid signaling and strigolactone signaling during mesocotyl development in rice Identification and characterization of microRNAs in virus-resistant and susceptible barley cultivars The DOF transcription factor, FaDOF1 affects eugenol accumulation in strawberry
×
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