{"title":"高浓度二氧化碳对平山红豆杉硒积累及相关根瘤菌群落的影响","authors":"Huawei Zang, Wenyao Shi, Minyi Kau, Jiayuan Li, Jinxing Li, Wanying Zhang, Zeming Zhou, Bowen Sun, Linxi Yuan, Renbin Zhu","doi":"10.1007/s11104-024-07072-0","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Selenium (Se) deficiency in soil and human diets may worsen with elevated atmospheric carbon dioxide (eCO<sub>2</sub>). However, current research focused on essential nutrient elements, such as nitrogen, phosphorus and potassium, the effects of eCO<sub>2</sub> on Se accumulation in staple crops are understudied. Here, the Se-hyperaccumulator <i>Cardamine hupingshanensis</i> was selected to investigate the impacts on Se accumulation, and associated rhizobacterial communities under eCO<sub>2</sub> (800 ppm).</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Simulated CO<sub>2</sub>-elevated greenhouse experiments were conducted, and Se concentrations were measured using inductively coupled plasma mass spectrometry (ICP-MS). Bacterial communities in bulk, rhizosphere and rhizoplane soils were analyzed via high-throughput 16 S rRNA amplicon sequencing.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The eCO<sub>2</sub> increased Se levels by three- to four-fold in <i>C. hupingshanensis</i> cultivated in natural soils. Rhizobacterial communities exhibited notable shifts under eCO<sub>2</sub> with increased relative abundances of Bacillaceae, Rhizobiaceae, Flavobacteriaceae and Xanthomonadaceae, but decreased Sphingomonadaceae, Gemmatimonadaceae and Micrococcaceae. Genera such as <i>Nannocystis</i>, <i>Steroidobacter</i>, <i>Dactylosporangium</i> and <i>Brevundimonas</i>, demonstrated significant positive correlation (<i>P</i> < 0.05) with total Se, bioavailable Se and pH in soils. The abundances of the bacteria involved in Se metabolism exhibited significant positive correlations (<i>P</i> < 0.05) with total inorganic carbon (TIC), total organic carbon (TOC) and carbon metabolism. Structural Equation Modelling analysis indicated that eCO<sub>2</sub> significantly increased soil bioavailable Se and <i>C. hupingshanensis</i> Se levels.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The eCO<sub>2</sub> promoted Se accumulation in <i>C. hupingshanensis</i> roots by regulating soil pH, TIC and bioavailable Se levels, while reshaping rhizobacterial communities. This study contributes to understanding associated mechanisms of Se accumulation under eCO<sub>2</sub>, particularly in plant-rhizobacterial interactions.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"250 1","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of elevated CO2 concentration on Se accumulation and associated rhizobacterial community in Cardamine hupingshanensis\",\"authors\":\"Huawei Zang, Wenyao Shi, Minyi Kau, Jiayuan Li, Jinxing Li, Wanying Zhang, Zeming Zhou, Bowen Sun, Linxi Yuan, Renbin Zhu\",\"doi\":\"10.1007/s11104-024-07072-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Background and aims</h3><p>Selenium (Se) deficiency in soil and human diets may worsen with elevated atmospheric carbon dioxide (eCO<sub>2</sub>). However, current research focused on essential nutrient elements, such as nitrogen, phosphorus and potassium, the effects of eCO<sub>2</sub> on Se accumulation in staple crops are understudied. Here, the Se-hyperaccumulator <i>Cardamine hupingshanensis</i> was selected to investigate the impacts on Se accumulation, and associated rhizobacterial communities under eCO<sub>2</sub> (800 ppm).</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>Simulated CO<sub>2</sub>-elevated greenhouse experiments were conducted, and Se concentrations were measured using inductively coupled plasma mass spectrometry (ICP-MS). Bacterial communities in bulk, rhizosphere and rhizoplane soils were analyzed via high-throughput 16 S rRNA amplicon sequencing.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>The eCO<sub>2</sub> increased Se levels by three- to four-fold in <i>C. hupingshanensis</i> cultivated in natural soils. Rhizobacterial communities exhibited notable shifts under eCO<sub>2</sub> with increased relative abundances of Bacillaceae, Rhizobiaceae, Flavobacteriaceae and Xanthomonadaceae, but decreased Sphingomonadaceae, Gemmatimonadaceae and Micrococcaceae. Genera such as <i>Nannocystis</i>, <i>Steroidobacter</i>, <i>Dactylosporangium</i> and <i>Brevundimonas</i>, demonstrated significant positive correlation (<i>P</i> < 0.05) with total Se, bioavailable Se and pH in soils. The abundances of the bacteria involved in Se metabolism exhibited significant positive correlations (<i>P</i> < 0.05) with total inorganic carbon (TIC), total organic carbon (TOC) and carbon metabolism. Structural Equation Modelling analysis indicated that eCO<sub>2</sub> significantly increased soil bioavailable Se and <i>C. hupingshanensis</i> Se levels.</p><h3 data-test=\\\"abstract-sub-heading\\\">Conclusion</h3><p>The eCO<sub>2</sub> promoted Se accumulation in <i>C. hupingshanensis</i> roots by regulating soil pH, TIC and bioavailable Se levels, while reshaping rhizobacterial communities. This study contributes to understanding associated mechanisms of Se accumulation under eCO<sub>2</sub>, particularly in plant-rhizobacterial interactions.</p>\",\"PeriodicalId\":20223,\"journal\":{\"name\":\"Plant and Soil\",\"volume\":\"250 1\",\"pages\":\"\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant and Soil\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1007/s11104-024-07072-0\",\"RegionNum\":2,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant and Soil","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s11104-024-07072-0","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
Effects of elevated CO2 concentration on Se accumulation and associated rhizobacterial community in Cardamine hupingshanensis
Background and aims
Selenium (Se) deficiency in soil and human diets may worsen with elevated atmospheric carbon dioxide (eCO2). However, current research focused on essential nutrient elements, such as nitrogen, phosphorus and potassium, the effects of eCO2 on Se accumulation in staple crops are understudied. Here, the Se-hyperaccumulator Cardamine hupingshanensis was selected to investigate the impacts on Se accumulation, and associated rhizobacterial communities under eCO2 (800 ppm).
Methods
Simulated CO2-elevated greenhouse experiments were conducted, and Se concentrations were measured using inductively coupled plasma mass spectrometry (ICP-MS). Bacterial communities in bulk, rhizosphere and rhizoplane soils were analyzed via high-throughput 16 S rRNA amplicon sequencing.
Results
The eCO2 increased Se levels by three- to four-fold in C. hupingshanensis cultivated in natural soils. Rhizobacterial communities exhibited notable shifts under eCO2 with increased relative abundances of Bacillaceae, Rhizobiaceae, Flavobacteriaceae and Xanthomonadaceae, but decreased Sphingomonadaceae, Gemmatimonadaceae and Micrococcaceae. Genera such as Nannocystis, Steroidobacter, Dactylosporangium and Brevundimonas, demonstrated significant positive correlation (P < 0.05) with total Se, bioavailable Se and pH in soils. The abundances of the bacteria involved in Se metabolism exhibited significant positive correlations (P < 0.05) with total inorganic carbon (TIC), total organic carbon (TOC) and carbon metabolism. Structural Equation Modelling analysis indicated that eCO2 significantly increased soil bioavailable Se and C. hupingshanensis Se levels.
Conclusion
The eCO2 promoted Se accumulation in C. hupingshanensis roots by regulating soil pH, TIC and bioavailable Se levels, while reshaping rhizobacterial communities. This study contributes to understanding associated mechanisms of Se accumulation under eCO2, particularly in plant-rhizobacterial interactions.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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