{"title":"Significance of the plastidial stringent response for plant growth on soil","authors":"","doi":"10.1007/s10725-023-01109-7","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>The regulatory nucleotide, guanosine 3′,5′-bis(pyrophosphate) (ppGpp), originally identified in <em>Escherichia coli</em>, controls transcription, translation and enzyme activities in bacteria and plastids of plant cells. We recently reported that seedlings of the ppGpp over-producing mutant of <em>Arabidopsis thaliana</em> grown on agar-solidified medium showed larger biomass than those of wild type (WT), especially under nutrient-limiting conditions. However, the reproducibility of the phenotype on the soil is unknown. To better understand the impact of the ppGpp accumulation on plant growth on the soil, phenotypes of the Arabidopsis ppGpp-less and ppGpp-accumulating mutants were characterized on nitrogen-rich and nitrogen-limiting soil. We found that although fresh weight of the ppGpp-accumulating mutant was significantly larger than that of WT under nitrogen-limiting conditions, dry weights of the mutants were the same as that of WT, indicating that impact of the ppGpp accumulation on plant biomass relies on growth conditions. These results confirmed that artificial modulation of ppGpp-dependent plastidial stringent response could contribute to plant growth on soil in response to nitrogen availability.</p>","PeriodicalId":20412,"journal":{"name":"Plant Growth Regulation","volume":"70 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-01-29","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/s10725-023-01109-7","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
The regulatory nucleotide, guanosine 3′,5′-bis(pyrophosphate) (ppGpp), originally identified in Escherichia coli, controls transcription, translation and enzyme activities in bacteria and plastids of plant cells. We recently reported that seedlings of the ppGpp over-producing mutant of Arabidopsis thaliana grown on agar-solidified medium showed larger biomass than those of wild type (WT), especially under nutrient-limiting conditions. However, the reproducibility of the phenotype on the soil is unknown. To better understand the impact of the ppGpp accumulation on plant growth on the soil, phenotypes of the Arabidopsis ppGpp-less and ppGpp-accumulating mutants were characterized on nitrogen-rich and nitrogen-limiting soil. We found that although fresh weight of the ppGpp-accumulating mutant was significantly larger than that of WT under nitrogen-limiting conditions, dry weights of the mutants were the same as that of WT, indicating that impact of the ppGpp accumulation on plant biomass relies on growth conditions. These results confirmed that artificial modulation of ppGpp-dependent plastidial stringent response could contribute to plant growth on soil in response to nitrogen availability.
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.
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