Plant and Soil最新文献

{"title":"Seasonal dynamics of ammonia-oxidizing archaea and bacteria in subalpine forests of western Sichuan","authors":"Li Zhang, Su Chen, Zebin Jiao, Sining Liu, Wenlan Huang, Lulu Huang, Liyun Yu, Lixia Wang, Bo Tan, Hongwei Xu, Lin Xu, Chengming You, Zhenfeng Xu, Jiao Li, Han Li","doi":"10.1007/s11104-025-07271-3","DOIUrl":"https://doi.org/10.1007/s11104-025-07271-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>The composition and structure of soil ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities in subalpine forest ecosystems may vary depending on different forest types and seasonal variations, thus having important implications for soil nitrogen (N) cycling.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Using <i>Abies fargesii</i> var. <i>faxoniana</i> (coniferous forests, CF), <i>Betula albosinensis</i> (broad-leaved forests, BF), and mixed forests of <i>A</i>. <i>fargesii</i> var<i>. faxoniana</i> and <i>B. albosinensis sinensis</i> (mixed forests, MF) in western Sichuan as our objects. The <i>amoA</i> gene abundance and community characteristics of soil AOA and AOB were studied.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Among the three forest types, the AOB gene abundance and diversity index were generally higher than those of AOA. Forest types influenced the AOA gene abundance and the AOB community richness index. In contrast, the AOB gene abundance and AOA and AOB community diversity index were influenced by the main effect of the sampling season. Additionally, two-year average data indicated that in mixed forests, the AOA gene abundance and diversity index and the AOB community richness index were significantly higher in October than in May. Furthermore, the composition of AOA and AOB communities varies among forest types, mainly influenced by pH, ammonium nitrogen (NH₄⁺) concentration, moisture, and soil phosphorus (P).</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>In subalpine forests, soil ammonia oxidation processes may be dominated by AOB. The AOA and AOB gene abundance and community structure differed among forest types and showed significant seasonal variations. These discoveries underscore the sensitive responsiveness of soil microorganisms in subalpine forests to changes in seasons and environmental conditions.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"27 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393192","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":"Soil properties shape soil microarthropod abundance but jointly regulate diversity with climate and vegetation along altitudinal climate zones","authors":"Jinhao Ma, Zhenzhen Shao, Xue Wei, Xiao Ren, Yuying Wang, Donghui Wu, Pengfei Wu","doi":"10.1007/s11104-025-07284-y","DOIUrl":"https://doi.org/10.1007/s11104-025-07284-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Soil microarthropods play a crucial role in soil ecological processes and are easily influenced by environmental changes. However, the distribution patterns of soil microarthropod communities along climatic zones and the major drivers remain unclear.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>The soil microarthropod communities were investigated on the eastern slope of Mount Gongga, including subtropical evergreen broad-leaved forest (SEB, 1600 m), subtropical evergreen and deciduous broad-leaved mixed forest (SEDB, 2000 m), warm temperate deciduous broad-leaved forest (WTDB, 2400 m), mid-temperate coniferous and broad-leaved mixed forest (MTC, 2800 m) and cold-temperate coniferous forest (CTC, 3200 m).</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The differences in the taxonomic composition of soil microarthropod communities between different altitudinal climate zones increased with the interval distance, with the dominant genera abundances (<i>Hypogastrura</i> and <i>Folsomia</i>) varying significantly. The community abundance exhibits an unimodal pattern along the altitudinal zones with maximum values occurring in the WTDB. Alpha diversity stabilizes from the SEB to MTC, but declines significantly in the CTC, while the beta diversity increases slightly from the SEB to WTDB and decreases in the MTC and CTC. The taxonomic composition and abundance of soil microarthropod communities are mainly determined by soil properties, e.g., pH, soil moisture and temperature, K content, while the alpha and beta diversity are mainly affected by the combined and independent effects of climate, vegetation types and soil properties, respectively.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>These findings suggest that the climate, vegetation types and soil properties have specific effects on the spatial distributions of soil microarthropod communities along an altitudinal climate zone.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"55 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385113","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":"Favorable subcellular distribution, stable binding form and synergistic antioxidation restrict Cd accumulation in the medicinal part of Asparagus cochinchinensis","authors":"Li Yang, Yuchen Kang, Yuhao Wang, Na Li, Wenqing Chen","doi":"10.1007/s11104-025-07279-9","DOIUrl":"https://doi.org/10.1007/s11104-025-07279-9","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Soil cadmium (Cd) pollution threatens the safe consumption of medicinal materials (<i>Asparagus cochinchinensis</i>). However, related research on the physiological response and medicinal quality of plants under Cd exposure is insufficient.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>This study preliminarily revealed the Cd uptake characteristics and detoxification mechanism of <i>A. cochinchinensis</i> by analyzing the distribution and morphological changes in Cd and explored the response of enzymes and nonenzymes (medicinal components).</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>As the degree of Cd stress increased, the biomass of different tissues increased under Cd0.5. Mineral elements were absorbed synergistically with Cd in the roots under Cd0.5 (0.91 mg/kg), which counteracted the growth toxicity caused by Cd absorption. In addition, Cd significantly increased in the cell sap to protect organelles, protein and pectic acid (F_NaCl) increased to chelate Cd and maintain a low level of water-soluble Cd (F_W) to reduce its toxicity, and synergistic antioxidation by enzymes and nonenzymes (SOD–CAT–saponins) increased to alleviate damage. In contrast, a high level of Cd stress inhibited the absorption of Mn in tubers and aboveground parts and led to the accumulation of numerous toxic forms of Cd (F_W) in organelles under Cd2 (3.68 mg/kg), potentially affecting photosynthesis and decreasing biomass.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p><i>A. cochinchinensis</i> has an adaptive detoxification mechanism to maintain low toxicity; in particular, adjusting the subcellular distribution and morphological changes in Cd increase the resistance of medicinal components, thus maintaining safe growth.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"13 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375464","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":"Montmorillonite as an “accelerator” for the microbial carbon pump during artificial biocrust construction","authors":"Cui Zhang, Keqiang Zhou, Zhen Wang, Zhou Zhou, J. Viridiana García Meza, Shaoxian Song, H. Kim, María Luciana Montes, Mostafa Benzaazoua, Ling Xia","doi":"10.1007/s11104-025-07256-2","DOIUrl":"https://doi.org/10.1007/s11104-025-07256-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Artificial biocrusts play a crucial role as a carbon pool in reversing desertification. However, current research has focused predominantly on the microbes, not the specific interaction between biocrusts and clay minerals, such as montmorillonite, in the biocrust carbon pump.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>This study established clay-based artificial biocrusts and investigated the effects of a clay mineral on the dynamics of soil organic carbon (SOC) accumulation. Montmorillonite and <i>Microcoleus vaginatus</i> were co-inoculated, and parameters related to SOC accumulation were determined, including microbial biomass carbon, SOC content, and chlorophyll a (Chl-<i>a</i>).</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The experimental results demonstrate that on day 84, the SOC contents in the montmorillonite-algae (≥ 1.4 g dm⁻²) inoculated microcosms were over 3.45 times higher than in those inoculated with algae, identifying 1.4 g dm⁻² as the optimal areal mass density of montmorillonite addition. Furthermore, montmorillonite played a crucial role in microbial growth and SOC stability, with microbial proliferation being the primary driver of SOC accumulation. Moreover, montmorillonite favored microorganisms with strong photosynthetic capabilities.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The experimental results indicate that montmorillonite promoted microbial growth and SOC accumulation in artificial biocrusts. Thus, montmorillonite may act as an accelerator for the microbial carbon pump during artificial biocrusts construction. Further field trials examining the positive effects of montmorillonite on artificial biocrust construction and organic carbon accumulation in the long-term are needed in the future. </p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"15 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385111","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":"Exopolysaccharides in biological soil crusts are important contributors to carbon and nutrient storage after the restoration of inland sand dunes","authors":"Karolina Chowaniec, Szymon Zubek, Kaja Skubała","doi":"10.1007/s11104-025-07258-0","DOIUrl":"https://doi.org/10.1007/s11104-025-07258-0","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Inland sand dunes in a temperate climate constitute challenging environments for plant colonization. Organisms forming biological soil crusts (BSCs) secrete exopolysaccharides (EPS), which are key for soil aggregation and water/nutrient accumulation. We aimed to estimate the contribution of EPS excreted by BSCs to total organic carbon (TOC) and cationic nutrient accumulation and the contribution of photoautotrophs to C fixation and production of EPS in the succession process of inland dunes.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We quantified EPS, TOC, exchangeable K, and Ca concentrations, and photosynthetic biomass in BSCs collected from three successional stages after the restoration of inland dunes.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Our study showed that C originated from EPS contributed mostly to TOC accumulated in BSC in the initial succession stage, however, this contribution was lower than observed in BSCs from arid climates. EPS content increased with BSC development, which was facilitated by photoautotrophs, yet participation of heterotrophs in EPS secretion cannot be excluded. Glycocalyx EPS fraction dominated and contributed to nutrient enrichment in BSCs.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results contribute to a deeper understanding of the importance of BSC in the accumulation of organic carbon and nutrients. This may prove useful in the restoration aimed at maintaining the specific vegetation of temperate inland dune ecosystems. Locally dispersed mechanical disturbances of biocrusts should be applied already in the initial stages of succession to maintain the aeolian activity and prevent accumulation of carbon and nutrients caused by the development of BSC.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"26 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367420","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":"Soil compaction reduces the yield potential of densely planted maize (Zea mays L.) by disrupting root and shoot growth coordination","authors":"Zhuohan Gao, Lu Liang, Xinbing Wang, Wenchao Zhen, Zaisong Ding, Congfeng Li, Zheng Liu, Ming Zhao, Zhigang Wang, Baoyuan Zhou","doi":"10.1007/s11104-025-07272-2","DOIUrl":"https://doi.org/10.1007/s11104-025-07272-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Increasing planting density is a management option to improve maize (<i>Zea mays</i> L.) yield; however, soil compaction poses a challenge to this practice by adversely affecting maize growth. This study aimed to understand the physiological processes related to limitations in yield potential of densely planted maize from soil compaction.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>A two-year field experiment was conducted with two planting densities (low density—LD, high density—HD) and three soil compactions (no compaction—NC, 1.30 g cm⁻³, moderate compaction—MC, 1.45 g cm⁻³, and heavy compaction—HC, 1.60 g cm⁻³). Yield, root and shoot growth traits were measured during the maize growing season.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Compared to LD, HD increased maize yield by 22.4–29.1%, 17.2–24.5%, and 10.6–12.3% under NC, MC, and HC condition, respectively. Yield benefits obtained from HD were diminished by compaction through inhibiting root and shoot growth. Compaction stress reduced root length, root surface area, and root dry weight, as well as root dehydrogenase activity and absorption capacity, and then negatively influenced photosynthetic parameters and dry matter accumulation, more severely in HD than in LD. Moreover, root growth indices declined more rapidly than shoot growth with increasing compaction, particularly under HD, leading to a reduced root/shoot ratio.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Soil compaction impacts maize root and shoot growth differently depending on planting density. Root growth was more sensitive to compaction stress than shoot growth under HD, which constrained yield potential of densely planted maize. Therefore, addressing soil compaction is essential for improving maize yields at high planting densities.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"26 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367422","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":"Structure and assembly of fungal communities in the phyllosphere and endosphere of healthy and diseased faba bean plants","authors":"Juan Li, Lu Hou, Yujiao Liu","doi":"10.1007/s11104-025-07255-3","DOIUrl":"https://doi.org/10.1007/s11104-025-07255-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Leaf-associated microorganisms are intimately related to plant diseases. The majority of faba bean leaf diseases are induced by fungal communities. Nevertheless, limited studies have been presented on the structure and assembly of the fungal communities in faba bean plants.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>This study investigated the structure and assembly of the fungal communities in the phyllosphere and endosphere of healthy and diseased five germplasm resource faba bean plants with ITS amplicons using the Illumina high-throughput sequencing platform.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The fungal community in both phyllosphere and endosphere samples, as well as healthy and diseased, displayed significant distinctions. Additionally, substantial variations were identified in the fungal communities of different germplasm resources and the degrees of illness of phyllosphere and endosphere samples. Distinct differences were also found in the species richness of phyllosphere and endosphere samples among different illness degrees. The Mortierellomycota was the predominant phylum in the healthy samples. The dominated genus of diseased samples were <i>Vishniacozyma</i> and <i>Cystofilobasidium.</i> The <i>Apiotrichum</i> was significantly enriched in healthy endosphere samples. The network structure of the healthy phyllosphere samples was more sophisticated and stable, with the genus <i>Ganoderma</i> being the core fungal taxa within the healthy phyllosphere samples. The deterministic processes dominated the assembly of healthy samples fungal communities, whereas stochastic processes mainly influenced the assembly of fungal communities in the diseased phyllosphere samples.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Overall, this research contributes to understand the correlation between leaf microbiota and hosts, and provides theoretical support for the healthy plant growth and disease prevention of faba beans.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"14 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258373","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":"Plant carbon allocation, soil carbon and nutrient condition, and microbial community jointly regulate microbial biomass carbon accumulation","authors":"Huijuan Xia, Youchao Chen, Zhi Yu, Xiaomin Zeng, Shuwei Yin, Xinshuai Li, Kerong Zhang","doi":"10.1007/s11104-025-07261-5","DOIUrl":"https://doi.org/10.1007/s11104-025-07261-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Microbial biomass carbon (MBC) has a significant contribution to soil carbon (C) pool. It has been suggested that plant input, soil C and nutrient condition, and microbial characteristic play crucial roles in MBC accumulation. However, the primary driver of MBC accumulation remains uncertain.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>To fill this knowledge gap, we conducted a greenhouse ¹³CO₂ labelling experiment by planting three pioneer species (<i>Pinus tabuliformis</i>, <i>Betula platyphylla</i>, <i>Populus purdomii</i>) in soils collected from three different depths, i.e., top-soil (0–10 cm), mid-soil (10–30 cm), and deep-soil (30–100 cm).</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>We found that MB¹³C positively correlated with plant aboveground and belowground ¹³C. The effects of plant ¹³C on MBC accumulation were mainly mediated by fungal diversity and composition. Specifically, mycorrhizal fungi (e.g., <i>Peziza</i>) and toxigenic genera (e.g., <i>Fusarium</i> and <i>Penicillium</i>) were identified as crucial fungal taxa. Notably, plant ¹³C allocation (aboveground ¹³C, belowground ¹³C, proportion of aboveground ¹³C, and proportion of belowground ¹³C) explained a larger proportion (17.50%) of MB¹³C variation among treatments than did soil available phosphorus contents and microbial community structure (fungal diversity and composition) (1.98%).</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our study suggests that plant inputs are major determinants of soil C storage, as plant C allocation was identified as the primary driver of MBC accumulation. Given the different roles of fungi and bacteria, separating fungal and bacterial biomass C can refine our understanding of MBC accumulation.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"12 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258374","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":"Investigating soil–root interactions and mucilage secretion under varying soil mechanical resistance in maize cultivars","authors":"Ehsan Ghezelbash, Mohammad Hossein Mohammadi, Mahdi Shorafa","doi":"10.1007/s11104-025-07263-3","DOIUrl":"https://doi.org/10.1007/s11104-025-07263-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aim</h3><p>This study explores how variations in soil mechanical resistance (SMR) impact two maize cultivars, 703 and 704, with a specific focus on root mucilage secretion and associated plant responses. Understanding these dynamics is crucial for optimizing crop growth in soils with varying compaction levels.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>SMR was systematically manipulated through soil compaction at five different bulk density levels (1.56, 1.6, 1.66, 1.69, and 1.71 Mg m⁻³) and through cementation in loamy sandy soil while keeping the matric potential constant. This approach allowed for a controlled analysis of how increased soil resistance influences maize root development and physiological responses.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Increased SMR resulted in increased mucilage exudation, which initially seemed to mitigate resistance to root penetration. However, when the SMR reached specific thresholds (bulk density &gt; 1.6 Mg m⁻³ or SMR &gt; 1.8 MPa), root water uptake was significantly reduced beyond this point. Additionally, soil cementation consistently impedes plant growth. A significant correlation was observed between SMR, mucilage exudation, and total root water uptake (TRWU), suggesting that mucilage secretion plays a critical role in managing root interactions with compacted soils.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>This study did not identify a specific SMR threshold at which plant responses abruptly change. Instead, mucilage exudation metrics may serve as indicators of critical SMR limits. Analyzing the properties of root mucilage provides valuable insights into SMR thresholds, offering potential strategies for improving crop resilience under varying soil conditions.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"78 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258741","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 molecular mechanism for improvement of coastal silt soil by the intercropping model of Suaeda glauca (Bunge) Bunge and Sesbania cannabina (Retz.) Pers","authors":"Xiaochi An, Ying Li, Yinhua Cao, Zaifeng Wang, Min Xu, Bin Lian","doi":"10.1007/s11104-025-07262-4","DOIUrl":"https://doi.org/10.1007/s11104-025-07262-4","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>The eastern coastal regions of China, which are undergoing rapid economic development, are characterized by extensive areas of coastal silt soil (CSS) with poor permeability, high salinity, and nutrient scarcity, necessitating immediate remediation.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Based on the intercropping pattern of <i>Suaeda glauca</i> (Bunge) Bunge and <i>Sesbania cannabina</i> (Retz.) Pers., the molecular mechanism of this intercropping pattern on the CSS improvement, and the rhizosphere microbial community adaptability of the two intercropping plants, were researched by means of metagenomics analysis, soil physicochemical properties, plant growth status.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results demonstrated that the improvement of soil salinity and alkalinity was positively correlated with the growth of <i>S. glauca</i>. Conversely, the growth of <i>S. cannabina</i>, was positively correlated with the significant increase in the contents of soil TN and TOC. Metagenomic analysis indicated that the rhizosphere of <i>S. cannabina</i> intercropped with <i>S. glauca</i> was enriched with bacteria related to nitrogen-cycle, which could assist biological nitrogen-fixation, thereby enhancing soil fertility and also promoting the growth of <i>S. glauca</i>; moreover, the two-component system in the rhizosphere microbial community of <i>S. cannabina</i> was enhanced to adapt better to saline-alkali stress. Due to the characteristics of salt-accumulation, the rhizosphere microenvironment of <i>S. glauca</i> was highly saline, and its rhizosphere microorganisms mainly resisted, and adapted to, the high-salt environment by promoting carbohydrate metabolism and energy metabolism.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>This study confirms that intercropping <i>S. glauca</i> with <i>S. cannabina</i> is an effective strategy for improvement of saline-alkali soil, providing a new method for management and sustainable development of CSS.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"21 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258372","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}