Metatranscriptomic analysis of tomato rhizospheres reveals insight into plant-microbiome molecular response to biochar-amended organic soil

Seanna L. Hewitt, R. Ghogare, William Troxel, Elvir Tenic, Daylen Isaac, A. Dhingra
{"title":"Metatranscriptomic analysis of tomato rhizospheres reveals insight into plant-microbiome molecular response to biochar-amended organic soil","authors":"Seanna L. Hewitt, R. Ghogare, William Troxel, Elvir Tenic, Daylen Isaac, A. Dhingra","doi":"10.3389/frans.2023.1205583","DOIUrl":null,"url":null,"abstract":"We characterized the effects of crop residue derived biochar on tomato growth, soil microbial diversity, and rhizosphere-level gene expression responses in an organic production system. Shoot fresh biomass and fruit yield were assessed at the end of the growing cycle. The corresponding transcriptomic response of the roots, the soil microbial community profiles, and the active transcripts within the communities were quantified using a metatranscriptomic approach at four different developmental stages of the plant. Biochar treatment did not impact shoot biomass or fruit production; however, metatranscriptome analysis revealed that the gene expression activity of the tomato rhizosphere changes over time in response to the biochar treatment, with a number of bacteria with known benefits to soil health and plant growth displaying increased gene expression (e.g., Rhizobiaceae, Pseudomonadaceae, Micromonosporaceae, Sphingomonadaceae). Streptomycetaceae were expressed at the highest levels in the rhizosphere. Biochar seemed to attenuate the expression of this bacteria by the end of the time course, possibly due to the rise in competition for resources driven by the increased activity of other beneficial microbes. Notably, pathogenic fungi in the soil displayed generally reduced expression in the biochar-amended rhizosphere in comparison with the control. In addition to the assessment of the rhizosphere microbiome, transcriptome analysis and gene ontology analysis of tomato roots revealed functional enrichment of genes associated with nitrogen metabolic processes, regulation of metabolic processes, and production of organic compounds in the biochar treated rhizosphere. Together, these results suggest that biochar amendment enhances gene expression of beneficial soil microbes, and also impacts gene expression in the plant roots, which may in turn lead to improvements in soil and plant health. The results of this study provide foundations and a methodology for using metatranscriptomic approaches to investigate the impacts of biochar or other soil amendments in different crops, varying soil types, and with greater experimental complexity. The findings of such investigations will inform the development of biochar-based soil amendment strategies to enhance soil fertility and crop health in a wide range of production systems.","PeriodicalId":73063,"journal":{"name":"Frontiers in analytical science","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in analytical science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3389/frans.2023.1205583","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

Abstract

We characterized the effects of crop residue derived biochar on tomato growth, soil microbial diversity, and rhizosphere-level gene expression responses in an organic production system. Shoot fresh biomass and fruit yield were assessed at the end of the growing cycle. The corresponding transcriptomic response of the roots, the soil microbial community profiles, and the active transcripts within the communities were quantified using a metatranscriptomic approach at four different developmental stages of the plant. Biochar treatment did not impact shoot biomass or fruit production; however, metatranscriptome analysis revealed that the gene expression activity of the tomato rhizosphere changes over time in response to the biochar treatment, with a number of bacteria with known benefits to soil health and plant growth displaying increased gene expression (e.g., Rhizobiaceae, Pseudomonadaceae, Micromonosporaceae, Sphingomonadaceae). Streptomycetaceae were expressed at the highest levels in the rhizosphere. Biochar seemed to attenuate the expression of this bacteria by the end of the time course, possibly due to the rise in competition for resources driven by the increased activity of other beneficial microbes. Notably, pathogenic fungi in the soil displayed generally reduced expression in the biochar-amended rhizosphere in comparison with the control. In addition to the assessment of the rhizosphere microbiome, transcriptome analysis and gene ontology analysis of tomato roots revealed functional enrichment of genes associated with nitrogen metabolic processes, regulation of metabolic processes, and production of organic compounds in the biochar treated rhizosphere. Together, these results suggest that biochar amendment enhances gene expression of beneficial soil microbes, and also impacts gene expression in the plant roots, which may in turn lead to improvements in soil and plant health. The results of this study provide foundations and a methodology for using metatranscriptomic approaches to investigate the impacts of biochar or other soil amendments in different crops, varying soil types, and with greater experimental complexity. The findings of such investigations will inform the development of biochar-based soil amendment strategies to enhance soil fertility and crop health in a wide range of production systems.
番茄根际的超转录组学分析揭示了植物微生物组对生物炭改性有机土壤的分子响应
我们表征了作物残渣衍生的生物炭对有机生产系统中番茄生长、土壤微生物多样性和根际水平基因表达反应的影响。在生长周期结束时,对枝条新鲜生物量和果实产量进行评估。在植物的四个不同发育阶段,使用元转录组学方法量化了根的相应转录组反应、土壤微生物群落概况和群落内的活性转录物。生物炭处理不影响地上部生物量或果实产量;然而,元转录组分析显示,番茄根际的基因表达活性随着时间的推移而变化,对土壤健康和植物生长具有已知益处的许多细菌表现出增加的基因表达(例如,根瘤菌科、假单胞菌科、小单孢菌科、鞘氨醇菌科)。链霉菌科在根际表达水平最高。随着时间的推移,生物炭似乎会减弱这种细菌的表达,这可能是由于其他有益微生物活性的增加导致了对资源的竞争加剧。值得注意的是,与对照相比,土壤中的病原真菌在生物炭改良的根际中的表达普遍降低。除了对根际微生物组的评估外,番茄根的转录组分析和基因本体论分析还揭示了与氮代谢过程相关的基因的功能富集、代谢过程的调节以及生物炭处理根际有机化合物的产生。总之,这些结果表明,生物炭改良剂增强了有益土壤微生物的基因表达,也影响了植物根部的基因表达。这反过来可能会改善土壤和植物的健康。这项研究的结果为使用元转录组方法研究生物炭或其他土壤改良剂对不同作物、不同土壤类型和更大实验复杂性的影响提供了基础和方法。这些调查的结果将为制定基于生物炭的土壤改良策略提供信息,以提高土壤肥力和作物健康,从而在广泛的生产系统中实现这一目标。
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 求助全文
来源期刊
自引率
0.00%
发文量
0
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信