Plant and Soil最新文献

{"title":"Response of nitrifier and denitrifier community to Epichloë endophytes mediated host litter decomposition under phosphorus addition treatments","authors":"Jie Jin, Chao Wang, Yang Yang, Ronggui Liu, Rong Zheng, Maohua Deng, Jianfeng Wang","doi":"10.1007/s11104-024-07019-5","DOIUrl":"https://doi.org/10.1007/s11104-024-07019-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aim</h3><p>Nutrient availability plays a crucial role in both litter decomposition and decomposer communities. However, the specific effects of <i>Epichloë</i> endophytes on soil decomposer communities during the decomposition of their host litter under fertilized conditions are still unclear.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>In this study, qPCR combined with Illumina sequencing was conducted to reveal the responses of functional gene communities involved in organic P recycling (<i>phoD</i>), nitrification (AOA/AOB-<i>amoA</i>), and denitrification (<i>nirS</i>/<i>nirK</i>) to <i>Epichloë gansuensis</i>-mediated decomposition of <i>Achnatherum inebrians</i> litter under different P addition treatments. Meanwhile, soil physicochemical properties and enzyme activities were measured.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Both <i>E. gansuensis</i> infection and P addition exerted limited effect on the abundance and diversity of <i>phoD</i>-harboring microbial community. In the <i>E. gansuensis</i>-free (E−) samples, 60 mM P addition significantly increased the gene copies of AOA-<i>amoA</i> and significantly decreased those of AOB-<i>amoA</i>. Additionally, P addition decreased the richness and diversity of the <i>nirK</i>-harboring community in the E− samples, while <i>E. gansuensis</i> appeared to alleviate this response. P addition decreased the relative abundance of <i>nirS</i>-harboring <i>Acidovorax</i> and <i>Azospirillum</i>, while increasing the <i>nirK</i>-harboring <i>Rhodopseudomonas</i> and <i>Bosea</i>. Mantel’s test showed that <i>E. gansuensis</i> infection decreased the correlation between nitrifier communities and soil properties. Furthermore, <i>nirS</i>- and <i>nirK</i>-harboring communities showed a similar correlation pattern with soil properties in both E+ and E− soil samples.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>This study demonstrates the important roles of <i>E. gansuensis</i> on nitrifier and denitrifier communities during its host grass decomposition under different P nutrient conditions, facilitating our comprehensive understanding of the ecological significance of <i>Epichloë</i> endophytes.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hot viewpoint on how soil texture, soil nutrient availability, and root exudates interact to shape microbial dynamics and plant health","authors":"Adegboyega Adeniji, Jingxuan Huang, Shidong Li, Xiaohong Lu, Rongjun Guo","doi":"10.1007/s11104-024-07020-y","DOIUrl":"https://doi.org/10.1007/s11104-024-07020-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and Aims</h3><p>This review explores how soil texture and nutrient availability influence root exudate composition and their effects on rhizosphere microbial dynamics and disease suppression, ultimately affecting plant health and resilience.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The findings reveal that clay soil has a dense structure and limited aeration. As a stress response, clay soil restricts root growth, prompts plants to release more exudates to enhance nutrient uptake and attracts beneficial microbes. In contrast, sandy soil, due to its loose texture, is easier for roots to penetrate, often resulting in less exudation. Nutrient availability plays a pivotal role in shaping exudate profiles, such as coumarins and organic acids, which recruit beneficial microbes like <i>Pseudomonas</i> and <i>Trichoderma harzianum</i>, aiding in nutrient acquisition and disease suppression. The interaction between soil texture and nutrient levels creates a dynamic environment that shapes microbial community structure and promotes disease suppression.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>This review highlights the current understanding of how variations in soil texture and nutrient levels impact root exudates and microbial communities in the rhizosphere. It also identifies key gaps, particularly the need for long-term field studies to explore these interactions under diverse environmental conditions. These insights are critical for developing targeted rhizosphere management strategies, paving the way for more resilient and productive agricultural systems.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of plant litter diversity on soil enzyme activity and microbial community composition in a Mongolian pine plantation","authors":"Bing Mao, Guigang Lin, Biao Zhu, Lei Zhao, Qiong Zhao, Qun Gang, De-Hui Zeng","doi":"10.1007/s11104-024-07034-6","DOIUrl":"https://doi.org/10.1007/s11104-024-07034-6","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Plant diversity loss is increasingly recognized to affect ecological functions such as primary productivity and nutrient cycling, yet how the diversity of organic materials derived from plant litter influences soil microbial processes is largely unclear.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>A laboratory microcosm experiment was conducted to explore the effects of litter species diversity on soil enzyme activity and microbial community in a Mongolian pine (<i>Pinus sylvestris</i> var. <i>mongolica</i>) plantation of Northeast China in 2018. Leaf litter of Mongolian pine was decomposed with the senesced aboveground materials of three dominant understory species in all possible combinations.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The decomposition of mixed-species litter showed more cases of antagonistic effects on the activities of soil acid phosphomonoesterase, N-acetyl-β-D-glucosaminidase and β-glucosidase and the amount of fungal PLFAs, and synergistic effects on soil cellulase activity, the ratio of Gram-positive to Gram-negative bacteria, and the amount of actinomycetes PLFAs. Litter species composition had significant non-additive influence on soil enzyme activities and microbial community composition. According to the results of constrained redundancy analyses, litter chemical composition was significantly correlated with soil enzyme activities and microbial community composition, while the chemical diversity and stoichiometric dissimilarity had no significant effects on soil enzyme activity.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Our results indicate that the non-additive decomposition effects of mixed-species litter on soil enzyme activities and microbial community composition depended primarily on litter species composition, which is partly explained by litter chemical composition rather than litter chemical diversity and stoichiometric dissimilarity. Our findings highlight the intricate legacy effects of species loss on soil microbial processes.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predatory protist promotes disease suppression against bacterial wilt through enriching plant beneficial microbes at the early stage of plant growth","authors":"Yuqi Song, Chen Liu, Keming Yang, Shiqi Sun, Lin Wang, Cansheng Yuan, Yangchun Xu, Wu Xiong, Qirong Shen, Zhong Wei","doi":"10.1007/s11104-024-07052-4","DOIUrl":"https://doi.org/10.1007/s11104-024-07052-4","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Plant health is closely associated with the rhizosphere microbial community. Predatory protists can regulate the rhizosphere microbes and thereby affect plant health. However, there is limited research on how the exogenous addition of predatory protists influences plant rhizosphere microbiome across plant growth.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Here, we isolated a predatory protist species, named <i>Naegleria</i> sp. QL92, from healthy tomato rhizosphere soil, which can effectively suppress bacterial wilt. We investigated the impact of predatory protist addition on the rhizosphere bacterial community across tomato growth stages in pots.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>We found that the predatory protist of <i>Naegleria</i> significantly altered the community structure and composition of the rhizosphere bacteria during the seedling, flowering and fruiting stages of tomato growth. Moreover, the relative abundances of bacterial phylum of Proteobacteria, Gemmatimonadetes, and Nitrospirae as well as majority bacterial genera, especially <i>Pseudomonas</i> were increased during the seedling stage after <i>Naegleria</i> addition. <i>Naegleria</i> inoculation reduced the density of the <i>Ralstonia solanacearum</i> pathogen, which was negatively correlated with <i>Pseudomonas</i> relative abundance. The addition of <i>Naegleria</i> also increased the connections within rhizosphere bacterial communities, resulting in a complex microbial network.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Overall, our study highlighted the application of predatory protists as puppet masters of rhizosphere bacterial communities with enriching plant beneficial microbes, which offer new venues to manage rhizosphere microbial communities to support healthy plant growth in sustainable agriculture.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of intercropping on phosphorus availability in plant–soil systems: a meta-analysis","authors":"Xiangwei Gong, Xinjie Ji, Anran Long, Hua Qi, Ying Jiang","doi":"10.1007/s11104-024-07041-7","DOIUrl":"https://doi.org/10.1007/s11104-024-07041-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Intercropping is an effective practice for increasing crop diversity and achieving sustainable agricultural development, especially in areas with limited agricultural land. Although the nitrogen turnover and trade-off responses of plant–soil systems to intercropping have been extensively studied, quantitative information on the association between P and crop productivity is lacking. Therefore, in this study, we aimed to elucidate the effects of intercropping on plant P concentration, uptake, and use efficiency and soil P availability.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We conducted a quantitative meta-analysis using a database containing 453 comparisons from 56 peer-reviewed studies.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Intercropping significantly increased the soil available P concentration and phosphatase activity by 14.68% and 11.74%, respectively, compared with monocropping. However, the effects of intercropping on other P characteristics and grain yield were not significant. Among the evaluated influencing factors, crop type (cereal or legume) had the greatest effect on soil P availability, followed by soil pH and P fertilizer input. Regression analysis revealed that plant P concentration and uptake were significantly and linearly correlated with soil available P concentration and phosphatase activity. Notably, in maize–legume intercropping systems, maize exhibited increased P concentration and uptake and increased grain yield, whereas legumes exhibited constrained growth.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Overall, we determined that intercropping improves soil P availability, depending on the ecological environment, nutrient management, and intercropping system. This study serves as a valuable reference for effective P fertilizer input in cereal–legume intercropping systems under different management practices.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Can nitrogen availability impact plant performance under water stress? A review of traits, mechanisms, and whole plant effects","authors":"S. T. Drobnitch, T. C. Donovan, J. A. Wenz, N. E. Flynn, M. E. Schipanski, L. H. Comas","doi":"10.1007/s11104-024-07006-w","DOIUrl":"https://doi.org/10.1007/s11104-024-07006-w","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Introduction</h3><p>Identifying mechanisms with potential to increase crop performance under limited water availability is critical to the future of agriculture. Many plant traits (stomatal behavior, specific leaf area, xylem architecture, ROS scavenging, root allocation, and increased osmotic potential) may enable crops to avoid or tolerate water limitation. Additionally, there is evidence that increased nitrogen (N) availability can ameliorate the negative effects of water limitation, although the mechanisms driving this effect are unclear. Here we seek to identify and synthesize the diverse plant physiological mechanisms by which increased N availability may improve plant performance under water limitation. We present four primary plant functional areas in which increased N availability has the potential to offset the negative impacts of water limitation: 1. Belowground resource acquisition, 2. Osmotic adjustment, 3. Photoprotective mechanisms, and 4. Regulation of water and light utilization.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We synthesized the diverse literature with variable N and water treatments for three important grain crop species: <i>Zea mays, Triticum aestivum</i>, and <i>Oryza sativa</i>. N treatments were standardized to ppm and normalized by soil water holding capacity, background soil N concentrations and number of fertilizer applications.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Ultimately, we conclude that moderate N availability may improve plant yield under water limitation via mechanisms from all four plant functional areas, but high levels of N availability can also be detrimental to plant responses to water limitations.</p><h3 data-test=\"abstract-sub-heading\">Discussion</h3><p>We provide recommendations for specific traits to measure in future field studies, as well as caveats to consider N species, N levels, and timing of N application in such studies.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arbuscular mycorrhizal fungi enhance Leymus chinensis resistance to salinity predominantly through regulating root endosphere bacteria","authors":"Peiran Guo, Yazhou Hou, Bingbing Jia, Yuchen Wang, Chengyan Lu, Run Wang, Jiaying Lin, Yanan Zhang, Wei Guo, Frank Yonghong Li","doi":"10.1007/s11104-024-07047-1","DOIUrl":"https://doi.org/10.1007/s11104-024-07047-1","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p><i>Leymus chinensis</i> is a promising grass species for restoring saline alkali grasslands, and its salt tolerance can be improved after inoculation with AMF. However, it is still unknown whether AMF can help plant adapt to saline stress by regulating plant associated microbiome of <i>L. chinensis</i>.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Pot experiments were conducted to investigate the effects of <i>Rhizophagus intraradices</i> on the growth of <i>L. chinensis</i> in natural saline soil through determining physicochemical indicators included biomass, ion concentration, physiological characteristics, rhizosphere soil properties and bacterial communities in the rhizosphere, root and shoot endosphere.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results demonstrated that <i>R. intraradices</i> significantly increased the biomass of <i>L. chinensis</i> and had a positive impact on ion absorption balance and physiological regulation. More importantly, the beneficial bacteria within rhizosphere, root and shoot endosphere were enriched. The microbial interaction networks in the rhizosphere, root and shoot endosphere became more complex and modular, with the changes of keystone taxa. Moreover, the correlation between microbial and plant biomass indicators has been strengthened. Microbial interaction networks had more effect than microbial diversity in promoting plant growth. Compared with the rhizosphere and shoot endosphere bacteria, the root endosphere bacteria regulated by AMF plays a greater role in improving biomass of <i>L. chinensis</i>.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Bacterial interaction patterns in the rhizosphere, root and shoot endosphere contribute to the growth of <i>L. chinensis</i> with AMF inoculation. Root bacterial community regulated by AMF play an important role in <i>L. chinensis</i> resistance to salinity.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The heterogeneous response in leaf traits among seasons and plant types of an evergreen broadleaf forest in western China to nitrogen addition was regulated by fertilization intensity","authors":"Wenzheng Chang, Qiu Song, Tianxing Liang, Jie Chen, Lixia Wang, Han Li, Li Zhang, Chengming You, Hongwei Xu, Lin Xu, Bo Tan, Zhenfeng Xu, Sining Liu","doi":"10.1007/s11104-024-07053-3","DOIUrl":"https://doi.org/10.1007/s11104-024-07053-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Previous studies have focused on the differing response patterns of leaf functional traits (LFTs) to nitrogen (N) addition under spatiotemporal or species classification variations. However, in N-rich forest ecosystems, it remains unclear whether continuous N input regulates the sensitivity of various plant types in different seasons to simulated N deposition.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We examined how N addition at 0, 20 (LN), and 40 kg N hm^–2 a^–1 (HN) affected the variations in LFTs and trait-trait covariations among seasons (April and August) and plant types in a N-rich evergreen broadleaf forest in western China.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Along the vertical vegetation gradient within the forest, LFTs that exhibit significant seasonal variations are most prevalent in trees, followed by shrubs, while they are rare in herbs. Most plants had higher C and P concentration in August than in April. The HN treatment reduced the seasonal variation in C concentration of trees and herbs, while it accentuated that of shrubs. Additionally, HN significantly decreased the differences in C and P between trees and both shrubs and herbs, while enhancing the differences in leaf N between shrubs and herbs in August. Only the scaling exponent of the N-P allometric function (i.e., the major regression slope of (logLNC = α logLPC + logβ)) decreased with increasing N addition.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Various ecological adaptation strategies and environmental sensitivities among plant types resulted in heterogeneous responses of plants to N addition. Meanwhile, continuous N input enhancing (weakening) the differences in certain leaf traits among species and across seasons.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation of leaf elemental composition in a subtropical river basin with diverse forest landscapes","authors":"Kundong Bai, Wenjun Li, Shihong Lv, Shiguang Wei, Xueqing Xu","doi":"10.1007/s11104-024-07039-1","DOIUrl":"https://doi.org/10.1007/s11104-024-07039-1","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Understanding the eco-evolutionary processes that govern leaf elemental composition in subtropical regions with diverse forest landscapes remains a challenge. Here, we investigated the phylogenetic and environmental regulation of leaf elemental composition in subtropical forests.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We sampled surface soils and leaves from herbs, ferns, deciduous woody species, and evergreen woody species across four forest landscapes (montane, valley, karst, and island forests) in the subtropical Lijiang River basin. We used phylogenetic comparative methods to identify regulators of leaf elemental composition.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Leaf elemental concentrations varied significantly among growth forms, with evergreen woody species presenting the highest leaf C concentration relative to N, P, and K. Apart from C, leaf elemental concentrations also showed significant variations across forest landscapes; for instance, karst forest species exhibited the highest leaf Ca and Mg concentrations but the lowest leaf P concentration, reflecting pronounced P deficiency and enhanced supply of Ca and Mg. Phylogenetic signal, indicating phylogenetic conservatism, was significantly detected in leaf C, K, Ca, and Mg concentrations. Evolutionary model comparisons suggested that stabilizing selection towards multiple optima for growth forms best explained variation in leaf C concentration, while stabilizing selection towards multiple optima for each growth form within a specific landscape emerged as the dominant process for leaf N, P, K, Ca, and Mg concentrations.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Our study highlights the critical roles of leaf elemental conservatism and stabilizing selection towards multiple optima for growth forms within and across forest landscapes in regulating leaf elemental composition in subtropical region.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic analysis of urban tree-soil interactions: Species-specific water use and desiccation effects on expansive clays","authors":"Xi Sun, Jie Li, Xin Liu, Shengshen Wu, You Gao","doi":"10.1007/s11104-024-07032-8","DOIUrl":"https://doi.org/10.1007/s11104-024-07032-8","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>This study investigates the complex interactions between urban trees and expansive clay soils, focusing on two prevalent species (<i>Corymbia maculata</i> and <i>Lophostemon confertus</i>) in Melbourne’s urban landscape. Limited field data and understanding of species-specific water use necessitate this research. We aim to quantify the spatiotemporal variability in soil-plant-water interactions within the urban contexts, a crucial factor for informed green infrastructure planning and sustainable ecosystem management in metropolitan areas.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Comprehensive field measurements were conducted over 12 months, including soil movement, soil water dynamics, tree transpiration, and leaf water potential. Sap flow sensors monitored tree water requirements. Laboratory soil testing determined soil properties and developed soil suction and water content profiles. The intercorrelation between soil water dynamics and tree water use was investigated.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Peak water use for both trees occurred during summer, contributing 32–40% of their total consumption. <i>C. maculata</i> transpired 48.1 kL, exceeding <i>L. confertus</i> by 106%. The trees’ desiccation influence extended horizontally to 0.4–0.5 times the tree height and vertically to 2.3–3.3 m depth. Soil water content explained 31–36% of soil movement variability, with a strong correlation (R² &gt; 0.9) between soil suction and water content within the active root zone.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>This study enhances our mechanistic understanding of urban tree-soil interactions, providing valuable insights for sustainable city planning. It emphasizes species-specific considerations in tree selection and placement, especially in areas with expansive soils. The robust field data contributes to refining predictive models of soil-plant-atmosphere interactions in urban landscapes, supporting informed decision-making in urban greening initiatives.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}