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Integrative regulatory networks modulating arbuscular mycorrhizal symbiosis 调节丛枝菌根共生的综合调控网络
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2025-12-16 DOI: 10.1016/j.rhisph.2025.101248
Yaseen Khan , Sulaiman Shah , Muhammad Faheem Jan , Mohammed Bouskout
{"title":"Integrative regulatory networks modulating arbuscular mycorrhizal symbiosis","authors":"Yaseen Khan ,&nbsp;Sulaiman Shah ,&nbsp;Muhammad Faheem Jan ,&nbsp;Mohammed Bouskout","doi":"10.1016/j.rhisph.2025.101248","DOIUrl":"10.1016/j.rhisph.2025.101248","url":null,"abstract":"<div><div>Arbuscular mycorrhizal symbiosis plays a pivotal role in nutrient acquisition and stress tolerance, making its regulation crucial for sustainable crop productivity. This review synthesizes current advances in understanding the molecular and physiological factors governing AM symbiosis, with emphasis on transcriptional, hormonal, and nutrient-mediated regulation. From pre-symbiotic signaling to root colonization and arbuscule development, AM formation is orchestrated by a complex network of molecular interactions. Transcription factors, including those with GRAS domains (e.g., NSP1, NSP2, RAM1, and DELLA), and other regulators such as MYB, SPX, WRKY, and CYCLOPS/IPD3, serve as central modulators of symbiosis-related gene expression. Phytohormones, including strigolactones, salicylic acid, and abscisic acid, generally promote symbiosis, whereas gibberellins and ethylene act as inhibitors; cytokinin exerts context-dependent effects. Nutrient status also modulates AM formation—low phosphorus and nitrogen promote, while high nutrient availability suppresses colonization. Collectively, these insights reveal the integrative regulatory networks driving AM symbiosis and offer new avenues to optimize symbiotic efficiency for enhanced plant growth and agricultural sustainability.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101248"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic effects of calcium lignosulfonate and microorganisms on saline-alkali leachate remediation: Enhancing plant growth and shaping rhizosphere microbial communities 木质素磺酸钙和微生物对盐碱渗滤液修复的协同效应:促进植物生长和形成根际微生物群落
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-01-24 DOI: 10.1016/j.rhisph.2026.101284
Zengpeng Chen , Qun zhong Meng , Yifan Liu , Liang Song , Minghua Liu
{"title":"Synergistic effects of calcium lignosulfonate and microorganisms on saline-alkali leachate remediation: Enhancing plant growth and shaping rhizosphere microbial communities","authors":"Zengpeng Chen ,&nbsp;Qun zhong Meng ,&nbsp;Yifan Liu ,&nbsp;Liang Song ,&nbsp;Minghua Liu","doi":"10.1016/j.rhisph.2026.101284","DOIUrl":"10.1016/j.rhisph.2026.101284","url":null,"abstract":"<div><div>The extent of saline-alkali land poses a significant threat to global agricultural productivity and environmental ecosystems, emphasizing the growing need for remediation efforts. Hydraulic improvement, the major technology currently employed in saline-alkali land rehabilitation, efficiently enables quick desalination. However, the leaching process produces significant amounts of saline-alkali leachate (SAL). If discarded directly, it leads to the wasteful consumption of water resources, groundwater pollution, and secondary salinization, posing serious environmental dangers. As a result, addressing the inherent technological limitations and improving water resource recycling are crucial for sustainable management. This study presents a hydroponic system that combines calcium lignosulfonate (CLS) with microorganisms (MO) for the ecological treatment of SAL. The effects of the synergistic treatment on the physicochemical properties of SAL, rice physiological morphology, and microbial composition were comprehensively assessed. The results showed that the synergistic treatment decreased the pH and electrical conductivity (EC) of SAL by 8.21 %–25.88 %. The height of rice plants, leaf number, stem diameter, biomass, root length, nitrogen uptake, chlorophyll, and soluble protein content increased by 24.50 %–102.50 %. Reductions in osmoprotectants (22.82 %–38.29 %), lipid peroxidation production (42.17 %), and antioxidant enzyme activity (16.90 %–27.63 %) were observed. Furthermore, the treatment reshapes the aquatic rhizosphere microbial community structure, fosters closer mutualistic relationships, and may alter microbial community functions. These findings suggest that this treatment may be an effective and environmentally friendly option for improving plant growth in saline-alkali environments, providing a scalable technical pathway for the resource utilization of SAL.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101284"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An overlooked synergy: arbuscular mycorrhizal fungi and increased accumulation of plant saponins 一个被忽视的协同作用:丛枝菌根真菌和植物皂苷积累增加
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.rhisph.2026.101274
Eduarda Lins Falcão , João Gabriel Lira de Carvalho , Jackson Roberto Guedes da Silva Almeida , Qiang-Sheng Wu , Fábio Sérgio Barbosa da Silva
{"title":"An overlooked synergy: arbuscular mycorrhizal fungi and increased accumulation of plant saponins","authors":"Eduarda Lins Falcão ,&nbsp;João Gabriel Lira de Carvalho ,&nbsp;Jackson Roberto Guedes da Silva Almeida ,&nbsp;Qiang-Sheng Wu ,&nbsp;Fábio Sérgio Barbosa da Silva","doi":"10.1016/j.rhisph.2026.101274","DOIUrl":"10.1016/j.rhisph.2026.101274","url":null,"abstract":"<div><div>The use of arbuscular mycorrhizal fungi (AMF) has been recognized as an effective strategy to increase the accumulation of plant secondary metabolites. However, the role of this approach in promoting saponin production, molecules with broad applications across various industrial sectors, has received limited attention. Thus, this opinion paper aimed to synthesize studies that have investigated AMF inoculation to improve saponin accumulation. Thirty-five relevant publications on this topic were selected and their key findings were highlighted, such as the most frequently studied plant and AMF genera, and whether bioactivities were evaluated. The results underscore the potential of AMF in saponin biosynthesis, while also identifying research gaps that need to be addressed to enable large-scale application of this technology.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101274"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cultivar-dependent responsiveness to mycorrhizal inoculation in sesame and ranking symbionts for drought mitigation 芝麻品种对菌根接种的响应及抗旱共生体排序
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.rhisph.2026.101261
Masoumeh Ghasemi , Banafshe Khalili , Morteza Zahedi , Hamed Aalipour
{"title":"Cultivar-dependent responsiveness to mycorrhizal inoculation in sesame and ranking symbionts for drought mitigation","authors":"Masoumeh Ghasemi ,&nbsp;Banafshe Khalili ,&nbsp;Morteza Zahedi ,&nbsp;Hamed Aalipour","doi":"10.1016/j.rhisph.2026.101261","DOIUrl":"10.1016/j.rhisph.2026.101261","url":null,"abstract":"<div><div>Drought severely limits sesame production in arid regions. While arbuscular mycorrhizal fungi (AMF) can enhance drought tolerance, their efficacy is context-dependent, and a systematic ranking of AMF species for sesame, considering genotype-specific responses, is lacking. We assessed two cultivars (drought-sensitive 'Naz', drought-tolerant 'Yekta') inoculated with four AMF species (<em>Claroideoglomus claroideum</em>, <em>Funneliformis mosseae</em>, <em>Rhizophagus irregularis</em>, and <em>Glomus fasciculatum</em>) under water deficit. A definitive genotype-AMF synergy was found. 'Naz' with <em>Cl. claroideum</em> showed superior resilience, reducing yield loss by 24.4 % and increasing yield by 59.8 % via improved nutrient uptake. The overall efficacy hierarchy was <em>Cl. claroideum</em> &gt; <em>F. mosseae</em> &gt; <em>R. irregularis</em> ≈ <em>G. fasciculatum</em>. While <em>Cl. claroideum</em> specialized in nutrient acquisition, <em>F. mosseae</em> stimulated soil phosphatase activity. This study establishes the first ranked hierarchy of AMF efficacy for sesame under drought and reveals a profound cultivar-specific response, providing a framework for precision bio-inoculation in arid agroecosystems.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101261"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Protected cultivation of the stock plant enhances rooting of wounded cuttings of Caryocar brasiliense (Caryocaraceae) 砧木的保护性栽培促进了巴西核桃科(Caryocar brasiliense)受伤插枝的生根
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.rhisph.2025.101254
Adriene Matos dos Santos , Hellen Cássia Mazzottini-dos-Santos , Leonardo Monteiro Ribeiro , Renan Ribeiro Silva , Nermy Ribeiro Valadares , Paulo Sérgio Nascimento Lopes
{"title":"Protected cultivation of the stock plant enhances rooting of wounded cuttings of Caryocar brasiliense (Caryocaraceae)","authors":"Adriene Matos dos Santos ,&nbsp;Hellen Cássia Mazzottini-dos-Santos ,&nbsp;Leonardo Monteiro Ribeiro ,&nbsp;Renan Ribeiro Silva ,&nbsp;Nermy Ribeiro Valadares ,&nbsp;Paulo Sérgio Nascimento Lopes","doi":"10.1016/j.rhisph.2025.101254","DOIUrl":"10.1016/j.rhisph.2025.101254","url":null,"abstract":"<div><div>Little is known about the factors controlling the efficiency of vegetative propagation by cuttings in tropical woody species. <em>Caryocar brasiliense</em>, an endemic fruit tree of the Cerrado biome, shows great potential for domestication through this technique. This study examined anatomical and physiological aspects related to the effects of the cultivation environment of the stock plants and the timing of wounding at the base of cuttings on the success of propagation. Stock plants were cultivated under full sunlight, shade netting, and greenhouse conditions, while cuttings were wounded at their bases at 0, 7, and 14 days after cutting. Rooting, morphoanatomy, and physiology of both stock plants and cuttings were evaluated, together with the ontogeny of adventitious roots. Greenhouse cultivation promoted greater growth, higher photosynthetic efficiency, and increased carbohydrate concentrations, as well as reduced lignification and phenolic compound accumulation in the cortical region. The phytohormones indole-3-acetic acid and jasmonic acid, together with peroxidase enzyme activity and the ratios of indole-3-acetic acid to 1-aminocyclopropane-1-carboxylic acid, peroxidase, and abscisic acid, showed strong positive correlations with rooting, whereas abscisic acid and zeatin showed negative correlations. Cultivation under 70 % shading and wounding applied seven days after cutting favored adventitious root formation. Adventitious root ontogeny in <em>C. brasiliense</em> is multisite, originating from the vascular cambium, phloem, cortex, and callus, depending on the cutting's origin in relation to the stock plant's cultivation environment. These findings provide insights into optimizing the propagation of <em>C. brasiliense</em> for domestication and conservation purposes.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101254"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Root exudate-microbiota interaction: Novel strategies for sustainable crop disease control 根系分泌物-微生物群相互作用:可持续作物病害控制的新策略
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.rhisph.2026.101262
Xiuyun Zhao, Chenyang Du, Qiang Zeng, Yue Kang, Gaofu Qi
{"title":"Root exudate-microbiota interaction: Novel strategies for sustainable crop disease control","authors":"Xiuyun Zhao,&nbsp;Chenyang Du,&nbsp;Qiang Zeng,&nbsp;Yue Kang,&nbsp;Gaofu Qi","doi":"10.1016/j.rhisph.2026.101262","DOIUrl":"10.1016/j.rhisph.2026.101262","url":null,"abstract":"<div><div>Root exudates—up to one-fifth of plant-fixed carbon—function as the rhizosphere's universal currency, simultaneously mobilising nutrients, signalling to microorganisms, and erecting chemical defense. Here, we synthesize recent studies to demonstrate how this metabolite cocktail (amino acids, organic acids, sugars, phenylpropanoids, terpenoids, alkaloids, and peptides) is dynamically reconfigured by genotype, developmental stage, soil type, nutrient status, drought, salinity, temperature, and pathogen attack. The plant-controlled shift in exudate composition feeds, chemoattracts or repels specific microbial taxa, creating a beneficial microbiome that solubilises minerals, fixes nitrogen, induces systemic resistance and outcompetes pathogens, thereby self-engineering a healthier, more resilient soil ecosystem. Conversely, pathogens exploit the same exudate gradients for chemotaxis and infection, forcing plants to mount a rapid, targeted secretion of antimicrobials and defence-associated compounds. We highlight critical gaps: (i) absence of field-realistic, microbe-sparing collection protocols; (ii) limited knowledge of biosynthetic and transport proteins dictating metabolite export; (iii) under-explored perception of exudates by fungi, viruses and nematodes. Bridging these gaps via portable sampling devices, multi-omics and genome editing will convert root exudates from descriptive metabolites into predictable, breedable traits, enabling low-input crops that engineer their own microbiome to enhance nutrient acquisition, stress tolerance and disease resistance.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101262"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plant coexistence shapes microbial carbon and phosphorus limitations in soils of expanding alpine shrubs 植物共存决定了扩张型高山灌木土壤微生物碳磷限制
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.rhisph.2026.101275
Zhiliang Ma, Yamei Chen, Wenjuan Xu
{"title":"Plant coexistence shapes microbial carbon and phosphorus limitations in soils of expanding alpine shrubs","authors":"Zhiliang Ma,&nbsp;Yamei Chen,&nbsp;Wenjuan Xu","doi":"10.1016/j.rhisph.2026.101275","DOIUrl":"10.1016/j.rhisph.2026.101275","url":null,"abstract":"<div><div>Alpine shrub expansion restructures plant communities and soil biogeochemistry on the Qinghai-Tibetan Plateau, but how contrasting plant coexistence patterns (shrub-conifer vs. mixed shrubs) shape microbial metabolic limitation across bulk/rhizosphere soils and soil layers remains unresolved—limiting predictions of ecosystem responses to vegetation shifts. We quantified microbial metabolic limitation via extracellular enzyme stoichiometry and vector properties in bulk/rhizosphere soils (organic/mineral layers) of expanding <em>Salix oritrepha</em> shrubs under three coexistence patterns: pure stands, coexistence with <em>Picea likiangensis</em> (shrub-conifer), or <em>Sibiraea angustata</em> (mixed shrubs). Our key findings reveal that microbial communities in <em>S. oritrepha</em> soils were primarily C- and P-limited, with coexisting plants identity driving divergent limitation patterns: relative to pure stands, conifer coexistence (<em>P. likiangensis</em>) consistently alleviated C limitation across all soils and layers, whereas mixed shrub coexistence (<em>S. angustata</em>) intensified C limitation (except for an alleviating effect in the mineral-layer rhizosphere). For P limitation, conifer coexistence strengthened limitation only in bulk soil, while mixed shrub coexistence primarily amplified P limitation in the rhizosphere. Soil moisture emerged as the dominant driver: it correlated positively with C limitation and negatively with P limitation. These results demonstrate that coexisting plants determines the direction and compartment-specificity of microbial resource limitation under shrub expansion—providing a functional framework to predict soil biogeochemical responses to alpine vegetation shifts, with critical implications for ecosystem management under global change.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101275"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of nitrogen and phosphorus addition on the diversity of arbuscular mycorrhizal fungal communities in agroecosystems 氮磷添加对农业生态系统丛枝菌根真菌群落多样性的影响
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-02-03 DOI: 10.1016/j.rhisph.2026.101286
Xiaojuan Du, Xiaoxu Fan
{"title":"Effects of nitrogen and phosphorus addition on the diversity of arbuscular mycorrhizal fungal communities in agroecosystems","authors":"Xiaojuan Du,&nbsp;Xiaoxu Fan","doi":"10.1016/j.rhisph.2026.101286","DOIUrl":"10.1016/j.rhisph.2026.101286","url":null,"abstract":"<div><div>As food demand increases, more and more agricultural ecosystems are widely applying nitrogen (N) and phosphorus (P) fertilizers to boost yields. Arbuscular mycorrhizal (AM) fungi have demonstrated outstanding potential in enhancing soil nutrient absorption and improving agricultural productivity by forming mutualistic symbiotic relationships with host plants. However, there is currently no definite conclusion regarding the impact of N and P fertilizer addition on AM fungal communities and soil nutrient content change in farmland. This study systematically evaluated the effects of N and P fertilizers by collecting 3147 sets of experimental data from 44 literatures. The results indicated that N addition significantly inhibited AM fungal α-diversity (within-community diversity), mainly reflected the inhibition of richness, Chao1 and abundance-based coverage estimator (ACE) indices. The application of urea or ammonium nitrate (NH<sub>4</sub>NO<sub>3</sub>) also showed inhibitory effects on AM fungal α-diversity. P addition at rates &gt;50 kg P ha<sup>−1</sup> yr<sup>−1</sup>, also demonstrated notable inhibitory effects on the AM fungal α-diversity. The single or mixed addition of N or P addition significantly enhanced AM fungal β-diversity (the extent of community composition similarity) and altered their community structure. In terms of soil nutrient content, N addition significantly promoted the contents of nitrate nitrogen (NO<sub>3</sub><sup>−</sup>-N) and electrical conductivity (EC), while inhibiting available phosphorus (AP). P addition significantly inhibited NO<sub>3</sub><sup>−</sup>-N but significantly promoted AP. The combined addition of N and P significantly promoted AP. Random Forest model pinpointed soil pH as the dominant driver behind the multidimensional responses, including AM fungal communities α-diversity, β-diversity, and structure under N addition. From this, it could be seen that the study systematically elucidated N and P fertilization regulated the of AM fungal diversity and soil nutrient content in farmland, providing a theoretical basis for sustainable management of high agricultural yields and soil quality maintenance.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101286"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The bioherbicidal potential of Streptomyces spp.: Mechanisms, applications, and future prospects in sustainable weed management 链霉菌的生物除草潜力:机制、应用及其在杂草可持续管理中的前景
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-02-05 DOI: 10.1016/j.rhisph.2026.101288
Mariana V. Franções, Juan Fernández
{"title":"The bioherbicidal potential of Streptomyces spp.: Mechanisms, applications, and future prospects in sustainable weed management","authors":"Mariana V. Franções,&nbsp;Juan Fernández","doi":"10.1016/j.rhisph.2026.101288","DOIUrl":"10.1016/j.rhisph.2026.101288","url":null,"abstract":"<div><div>The intensive application of synthetic herbicides in agriculture drives the urgent need for sustainable alternatives, particularly in the context of widespread herbicide resistance, environmental pollution, and health risks. This comprehensive review evaluates the potential of <em>Streptomyces</em> spp. as producers of bioherbicidal metabolites, focusing on their biochemical diversity, mechanisms of action, and prospects for weed management. A literature survey identified that <em>Streptomyces</em> species synthesize a broad spectrum of phytotoxic secondary metabolites—including thaxtomins, herbicidins, coronafacoyl compounds, and indole-3-acetic acid (IAA)—which demonstrate strong potential for biological weed control. These molecules act via distinct mechanisms, such as inhibition of cell wall biosynthesis, disruption of hormonal homeostasis, and interference with primary metabolism. However, the full realization of this potential is currently limited by challenges in large-scale production, including the metabolic complexity of biosynthesis, instability of active compounds, and insufficient formulation strategies. Bioherbicides derived from <em>Streptomyces</em> represent a promising and environmentally compatible alternative to synthetic options. Overcoming current barriers through advances in genomics, metabolic engineering, and formulation technology will be key to developing effective, scalable <em>Streptomyces</em>-based products and realizing their role in integrated and sustainable weed management.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101288"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model-based insights on the relationship between planar root length density observed in minirhizotron images and volumetric root length density in the field 基于模型的见解,观察到的平面根长度密度在微型zozotron图像和体积根长度密度之间的关系
IF 3.5 3区 生物学
Rhizosphere Pub Date : 2026-03-01 Epub Date: 2026-02-16 DOI: 10.1016/j.rhisph.2026.101294
Magdalena Landl, Sibghat Ullah, Lena Lärm, Anja Klotzsche, Jan Vanderborght, Andrea Schnepf
{"title":"Model-based insights on the relationship between planar root length density observed in minirhizotron images and volumetric root length density in the field","authors":"Magdalena Landl,&nbsp;Sibghat Ullah,&nbsp;Lena Lärm,&nbsp;Anja Klotzsche,&nbsp;Jan Vanderborght,&nbsp;Andrea Schnepf","doi":"10.1016/j.rhisph.2026.101294","DOIUrl":"10.1016/j.rhisph.2026.101294","url":null,"abstract":"<div><div>Minirhizotrons (MR) enable non-destructive investigation of plant root systems in the field. However, MR images only provide information about root systems in the 2D plane, whose relationship to 3D root system measures remains unclear. This study uses model simulation to investigate the relationship between planar root length density (pRLD) as determined from MR images and volumetric root length density (vRLD) in the field.</div><div>We set up a virtual MR facility resembling the field MR facilities in Selhausen. Root systems of maize and winter wheat were grown around horizontally laid rhizotubes in a virtual field setup using the root architecture model CPlantBox. We calculated pRLD from virtual MR images, as well as vRLD from virtual soil layers.</div><div>Our simulations confirmed experimental observations of weak correlations between pRLD and vRLD in topsoil, and of strong correlations in subsoil. The ratio of vRLD to pRLD remained relatively constant across the entire subsoil depth. The greater the heterogeneity in the distribution of root length density or in the anisotropy of root growth across depth, the higher the ratio of vRLD to pRLD. Different numbers of MR images led to similar mean pRLD values if the MR images were distributed evenly along the rhizotube length. Larger rhizotube diameters resulted in lower vRLD-to-pRLD ratios, while different plant densities had no effect.</div><div>Model simulation provides valuable insights into the factors influencing the relationship between pRLD and vRLD. It also draws attention to the potential and limitations of using minirhizotron image data, making it a useful complement to experimental studies.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"37 ","pages":"Article 101294"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147395910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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