Rhizosphere最新文献

{"title":"Root interactions in wheat/fababean intercropping system enhanced growth performance and yield","authors":"Yasir Arafat ,&nbsp;Asma Shah ,&nbsp;Israr Ud Din ,&nbsp;Muhsin Jamal ,&nbsp;Mudassir Shah ,&nbsp;Nigora Kuchkarova ,&nbsp;Wenxiong Lin ,&nbsp;Sheng Lin ,&nbsp;Hua Shao","doi":"10.1016/j.rhisph.2024.101007","DOIUrl":"10.1016/j.rhisph.2024.101007","url":null,"abstract":"<div><div>Intercropping has been extensively used to facilitate growth performance and yield in agriculture. However, belowground mechanisms that facilitate aboveground growth performance and yield in cereal/legume intercropping have not been sufficiently validated in the context of low molecular weight organic acids (LMWOA) and microbial communities’ interactions. This study utilized Illumina Mi-Sequencing and GC-MS to assess the community structure of microbes and abundance of LMWOA in rhizosphere soil of different partitions of wheat/fababean intercropping systems compared to their sole cropping plots. The results indicate that the aboveground growth performance and yield advantages in freely-interacted (NRP) or semi-interacted (SRP) wheat/fababean intercropping plots are primarily associated with belowground abundance and diversity of beneficial bacterial groups and bioavailability of LMWOA. The relative abundance of some specific PGPR, such as <em>Ellin6067, Candidatus_solibacter, Bryobactor, Gemmatimonas, Anaerolinea</em> and different genera of <em>rhizobium (Allorhizobium</em> and <em>Bradyrhizobium)</em> in NRP and SRP plots are increased significantly at (p &lt; 0.05) as compared to CRP and sole cropping plots<em>.</em> Moreover, LMWOA such as n-hexadecanoic acid, eicosanoic acid-methyl ester (arachidic acid), 9-octadecenoic acid (Z)-methyl ester, and octadecanoic acid were also found to be abundant in NRP plots as compared to their monocropping wheat and fababean. Furthermore, positive correlations of certain dominant LMWOA and PGPR were recorded in the rhizosphere of NRP as compared to monocropping wheat and fababean rhizosphere. Our study indicated that freely or semi-interactions of fababean with wheat restored beneficial microbial community and LMWOA to the rhizospheres, which provided a better understanding of nutrient availability under cereal/legume intercropping practices. Our results implied that fababean-based intercropping may be an efficient cropping system for improving soil fertility and nutrient availability in agricultural practice.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"33 ","pages":"Article 101007"},"PeriodicalIF":3.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143137674","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}

{"title":"Silicon drives distinctly the bacterial community in the rhizosphere of maize and common bean","authors":"Gelza Carliane Marques Teixeira ,&nbsp;Renato de Mello Prado ,&nbsp;Carlos Vital Gonzalez-Porras ,&nbsp;Patrícia Messias Ferreira ,&nbsp;Lívia Tálita da Silva Carvalho ,&nbsp;Sandra Mara Barbosa Rocha ,&nbsp;Janderson Moura da Silva ,&nbsp;Thâmara Kelly dos Santos Apollo Souza ,&nbsp;Marcos Renan Lima Leite ,&nbsp;Rafael de Souza Miranda ,&nbsp;Arthur Prudêncio de Araújo Pereira ,&nbsp;Francisco de Alcântara Neto ,&nbsp;Ademir Sérgio Ferreira Araujo","doi":"10.1016/j.rhisph.2024.101008","DOIUrl":"10.1016/j.rhisph.2024.101008","url":null,"abstract":"<div><div>Silicon (Si) has been recognized as a beneficial nutrient for plants, though its effect on microbial communities within the rhizosphere remains poorly understood, particularly when comparing plant species. This study assessed the effect of Si on the bacterial community in the rhizosphere of two distinct plant species, i.e., common bean and maize, under field conditions. The experiment compared two doses of Si (0 and 12 kg ha⁻¹), applied via fertigation, on the bacterial community in the rhizosphere of both species using a randomized complete block design. Soil samples from the rhizosphere were collected at the pod formation stage (R7) for common bean and the tasseling stage (V) for maize. DNA was extracted, and the V4 region of the 16S rRNA gene was sequenced using the Illumina platform. The application of Si slightly separated the bacterial communities in the rhizosphere of both plant species. While Si did not affect bacterial richness and diversity in the rhizosphere of common bean, the rhizosphere of maize showed higher bacterial richness and diversity without Si. The co-occurrence network complexity showed less variation in the rhizosphere of common bean in response to Si, whereas maize exhibited more significant differences between treatments with and without Si. The rhizosphere of maize treated with Si had a higher number of edges (32,729) and positive interactions (10,749) compared to the treatment without Si. This study demonstrated that the bacterial communities in the rhizosphere of maize and common bean respond differently to Si, with Si having a greater impact on the bacterial community in the rhizosphere of maize than in common bean.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"33 ","pages":"Article 101008"},"PeriodicalIF":3.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143137773","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}

{"title":"Plant species shaping rhizosphere fungal community structure in the subalpine forest steppe belt","authors":"Mengxin Gong ,&nbsp;Jilian Wang ,&nbsp;Mingyuan Li","doi":"10.1016/j.rhisph.2024.100999","DOIUrl":"10.1016/j.rhisph.2024.100999","url":null,"abstract":"<div><div>Rhizosphere fungi are important components of soil ecosystems and play a critical role in soil organic matter decomposition, and nutrient cycling. The influence of plant species on rhizosphere soil properties and how this influence shapes rhizosphere fungal communities in mountain ecosystems remains poorly understood. To provide scientific basis for the management of mountain ecosystem, the diversity pattern of rhizosphere fungal community was investigated by using ITS high-throughput sequencing method among different plants species (<em>Descurainia sophia, Lepidium apetalum</em>, <em>Phlomoides umbrosa</em>, <em>Carum buriticum, Cirsium japonicum,</em> and <em>Artemisia annua</em>) in Tomur Peak National Natural Reserve, China. The results showed that physicochemical properties of rhizosphere soil differed significantly among plants species and plant species had significant effects on rhizosphere fungal community. The total number of fungal species in <em>P</em>. <em>umbrosa</em> was much higher than that in other plants, and the diversity and uniformity of species distribution in fungal communities in <em>C</em>. <em>buriticum</em> were higher. Regardless of plant species, Ascomycota was dominant and positively correlated with the abundance of other phyla fungi, which may play a key role in improving the viability of microbial population in Tomur Peak. The similarity of fungal communities in different host plants was low, and the species composition and structure differed greatly. Plant species significantly affected the fungal variables (path coefficient = 0.57), and this effect can not be attributed to a single plant characteristic, as at least one soil characteristic was related to microbial activity. Soil organic matter content played an important role in triggering fungal diversity.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"33 ","pages":"Article 100999"},"PeriodicalIF":3.4,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143137731","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}

{"title":"Dicamba herbicide alters microbial community, metabolite composition, and nitrogen-cycling function in the wheat rhizosphere","authors":"Tengteng Shao ,&nbsp;Huaqing Liu ,&nbsp;Aiyun Guo ,&nbsp;Dongle Cheng ,&nbsp;Xinhan Chen ,&nbsp;Shugang Hu ,&nbsp;Jian Zhang","doi":"10.1016/j.rhisph.2024.100998","DOIUrl":"10.1016/j.rhisph.2024.100998","url":null,"abstract":"<div><div>Rhizosphere microorganisms are crucial for the growth and health of their host plants. Dicamba is one of the representative herbicides used for the control of wheat weeds. In recent years, the usage of dicamba has escalated globally, particularly with the advent of dicamba-tolerant transgenic crops. However, the impacts of this herbicide on non-target organisms, particularly the rhizosphere microorganisms of wheat, is not yet clear. Furthermore, rhizosphere microorganisms are important for nitrogen cycling in soil-crop systems, the influence of dicamba on rhizosphere nitrogen cycling functionality needs further investigation. This study aims to elucidate the effects of dicamba on the microbial community, metabolite profiles, and nitrogen cycling-related genes in wheat rhizosphere. Our findings indicated that dicamba led to significant alterations in the diversity and co-occurrence patterns of the rhizosphere microbial community, notably reducing the abundances of phyla Verrucomicrobia, Planctomycetes, and Cyanobacteria. Additionally, dicamba markedly disturbed the rhizosphere metabolite profiles, particularly those associated with carbohydrate and amino acid metabolism. Notably, dicamba treatment resulted in an up-regulation of enzymatic genes catalyzing processes of assimilatory nitrate reduction to ammonium (ANRA)/dissimilatory nitrate reduction to ammonium (DNRA) (EC: 1.7.5.1, EC: 1.9.6.1, and EC: 1.7.1.15) and denitrification (EC: 1.7.2.1 and EC: 1.7.2.5). The observed increases in the abundances of the genera <em>Cellulosimicrobium</em> and <em>Pseudomethylobacillus</em> were critical for facilitating ANRA and DNRA. The application of dicamba altered soil organic matter content, which in turn influenced the abundances of microorganisms involved in ANRA/DNRA and denitrification, thereby affecting the nitrogen cycling functionality in the rhizosphere. This study offers valuable theoretical support for assessing the rhizosphere ecological effects of agrochemical application.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"33 ","pages":"Article 100998"},"PeriodicalIF":3.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143137774","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}

{"title":"Functional profiling of abundant glycosyltransferases in the rhizospheric bacteriome of Abutilon fruticosum","authors":"Hana S. Sonbol ,&nbsp;Rewaa S. Jalal","doi":"10.1016/j.rhisph.2024.101001","DOIUrl":"10.1016/j.rhisph.2024.101001","url":null,"abstract":"<div><div>In this study, we undertook an extensive exploration of the rhizospheric bacteriome of <em>Abutilon fruticosum</em>, focusing on the activities of Carbohydrate-Active Enzymes (CAZymes) of class glycosyltransferases (GTs), and their potential impact on plant growth and fortification against environmental adversities and soil-borne pathogens. Investigation revealed a predominance of families GT1, GT31, GT35, GT39, and GT51, mainly ascribed to bacterial genera <em>Microvirga</em>, <em>Arthrobacter</em>, <em>Blastococcus</em>, <em>Bacillus</em>, <em>Nocardioides</em>, and <em>Kocuria</em>. Our findings unveiled the pivotal role of phenylalanine, mostly exuded by plant roots, serving as the primary substrate for the catalytic activities of the identified CAZymes. With glucosylation emerging as the predominant enzymatic function, we propose UDP-D-glucose as the central core intermediate metabolite, orchestrating a multifaceted network of interrelated metabolic pathways. Subsequent profiling delineated a diverse array of metabolites synthesized by 10 CAZymes actively participating in 10 crosstalking pathways. Functional analyses of these metabolites underscore their significance in the biosynthesis of flavonoids, anthocyanins, and related derivatives, crucial for the reproductive success of plants by serving as visual cues for insect pollinators and conferring protection against deleterious effects of radiation. Certain other metabolites play vital roles in reinforcing the structural integrity of plant cell walls, thus enhancing resistance against enzymatic degradation while augmenting cytokinin activity. In conclusion, our study elucidates a novel paradigm of plant-bacteria mutualistic interaction, offering insights into the intricate mechanisms underlying plant-microbe symbiosis. We posit that the integration of high-throughput technologies with metabolic engineering strategies presents a promising approach for applying cost-effective and environmentally benign alternatives to conventional agricultural practices. (249 words).</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"33 ","pages":"Article 101001"},"PeriodicalIF":3.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143137775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metagenomics reveals the profiles and drivers of antibiotic resistance genes and virulence factors in Glebionis coronaria L. planting soil","authors":"Qingchao Xie ,&nbsp;Fanfan Shang ,&nbsp;Zhe Zhang ,&nbsp;Yihui Liu ,&nbsp;Hongmin Zhang ,&nbsp;Zheng Han ,&nbsp;Yong Zhao","doi":"10.1016/j.rhisph.2024.100992","DOIUrl":"10.1016/j.rhisph.2024.100992","url":null,"abstract":"<div><div>Due to the application of contaminated water irrigation and bio-amendments, the emergence and spread of antibiotic resistance genes (ARGs) and virulence factors (VFs) in soil have become a global problem, thus having potential threats to human health and ecology. However, limited knowledge exists regarding how variations in the soils of <em>Glebionis coronaria</em> L. (previously called <em>Chrysanthemum coronarium</em> L., or the crown daisy) planting sites influence the profiles of ARGs and VFs. In this study, ARGs, VFs, mobile genetic elements (MGEs), and microbial communities were comprehensively characterized using metagenomic methods in the soils from five different <em>Glebionis coronaria</em> L. planting sites in Shanghai. The dominant microbial populations in <em>Glebionis coronaria</em> L. planting soil were not affected by different planting sites, but there were changes in their relative abundance. The abundance and diversity of ARGs, VFs, and MGEs were different among the soils of five planting sites. The overall distribution characteristics of ARGs and VFs in the soils of each planting site remained consistent. Potential hosts shared by ARGs and VFs were present at each site, raising the risk of soil antibiotic resistance. Fe and T were the primary driving factors for the changes in ARGs and VFs, contributing to 11.32 % and 10.74 % of the overall variation in ARGs and VFs, respectively. Taken together, the identification of biological and non-biological factors that affect ARGs and VFs in the soils from different planting sites could provide valuable perspectives for controlling the dissemination of these genes. This study underscored the necessity for accurate and coordinated strategies to tackle the worldwide antibiotic resistance challenge.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"32 ","pages":"Article 100992"},"PeriodicalIF":3.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747544","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}

{"title":"Primer pairs to identify physiological races of Plasmodiophora brassicae","authors":"Hui Zhao (赵辉) ,&nbsp;Hai-di Liang (梁海迪) ,&nbsp;Hu Zhou (周瑚) ,&nbsp;Bing-ying Ling (凌丙英) ,&nbsp;Erming Liu (刘二明) ,&nbsp;Zuo-hua Ren (任佐华)","doi":"10.1016/j.rhisph.2024.100983","DOIUrl":"10.1016/j.rhisph.2024.100983","url":null,"abstract":"<div><div>Clubroot is a soil-borne disease caused by infection with <em>Plasmodiophora brassicae</em>, the causal agent of clubroot, and clubroot can directly cause enormous economic losses in cruciferous crops. The latent spores of <em>P. brassicae</em> are highly active, have a high rate of infection, and are transmitted over a wide range of channels. The manifestation of <em>P. brassicae</em> in fields is often caused by the mixed infection of multiple physiological races, and such mixed infections often pose a substantial challenge to the breeding of plants that are resistant to <em>P. brassicae</em>. In this study, a set of multiple molecular markers for the identification of the main physiological race of <em>P. brassicae</em> was established by utilizing a system to detect the clubroot microspecies-specific primers <em>SCL14 (UP/LP)</em>, <em>PBRA_000030-2 (F/R)</em>, <em>PBRA_000303-1 (F/R)</em>, <em>PBRA_009348-2 (F/R)</em>, and <em>Novel342-1 (F/R)</em>. The molecular identification of clubroot physiological race resulted in identifying of five such races, including No. 1, 4, 7, 9, and 11. The primers used in this study were more specific, and some strains were not only identified as No. 4 but also as No. 7, such as strains P2, P3, and P4, or as No. 1, such as strain P60. The highest frequency and widest distribution of the small species No. 4 in the sampling site indicated that race No. 4 is the dominant race of <em>P. brassicae</em>. Based on the distribution of race in the sampling site, it was found that the isolated strains of <em>P. brassicae</em> were more differentiated and caused more types of disease. In this study, the primers obtained for the molecular identification of <em>P. brassicae</em> in previous studies were improved and combined to form a multi-molecular marker method to identify the physiological race isolates of <em>P. brassicae</em>, which will provide a theoretical basis to identify the isolates of P. brassicae using molecular markers.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"32 ","pages":"Article 100983"},"PeriodicalIF":3.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747545","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}

{"title":"Identification of Phytophthora nicotianae tolerant citrus hybrids using subordinate function analysis of disease and morpho-physio-biochemical responses","authors":"Harsimran Singh ,&nbsp;Krishan Kumar ,&nbsp;Neeraj Kumar ,&nbsp;Rimaljeet Kaur ,&nbsp;Anita Arora ,&nbsp;Nirmaljit Kaur ,&nbsp;Jaswinder Brar ,&nbsp;Harleen Kaur","doi":"10.1016/j.rhisph.2024.101000","DOIUrl":"10.1016/j.rhisph.2024.101000","url":null,"abstract":"<div><div><em>Phytophthora nicotianae</em> is a devastating fungus, which causes significant losses to citrus. To find new <em>Phytophthora</em> tolerant citrus rootstock hybrids, 13 Rangpur lime (RL; susceptible parent) × sour orange (SO; tolerant parent) hybrids were screened against <em>P</em>. <em>nicotianae</em> using artificial soil inoculation method. Their response was judged on the basis of feeder root rot (FRR) ratings and the alterations of morphology (shoot length, shoot diameter, leaf number and root weight), physiology [net photosynthesis rate (Pn), transpiration rate (E), stomatal conductance (gs)] and activity of defence enzymes [Leaf and root activity of peroxidase (POX), lipoxygenase (LOX), and phenyl alanine ammonia lyase (PAL)] under <em>Phytophthora</em> infection. In FRR ratings (1–5), the donor parent, SO and six hybrids scored rating of one, delineating to the tolerant reaction. From rest, four, two and one hybrids were rated as moderately tolerant (MT), moderately susceptible (MS) and susceptible (S), respectively. <em>Phytophthora</em> infection adversely impacted the morphological and physiological parameters in most of the hybrids. A significant (<em>P</em> <em>&lt;</em> 0.05 or 0.01) negative correlation of feeder root rot ratings (FRRR) with morphological (r = −0.53 for shoot length to r = −0.87 for shoot diameter) and physiological traits (r = −0.76 for leaf chlorophyll content to r = −0.95 for transpiration rate) verified this adverse impact. The relative reduction in these parameters was maximum for S or MS-individuals, while the T-individuals were least affected. The transpiration rate among physiological parameters witnessed significant (<em>P</em> <em>&lt;</em> 0.01) reductions only for S or MS category hybrids, indicating its importance in screening programs. Among the enzymes, the leaf POX activity showed moderate negative relationship with FRR score, reflecting its role in host defence. The six tolerant hybrids harboured high leaf POX activity (≥1000 ΔA min⁻¹ g⁻¹ fresh weight), while it was lower in S or MS category hybrids. To find overall response of the hybrids to pathogen infection, principal component analysis (PCA) and subordinate function analysis were performed on all the parameters, and comprehensive value (D-value) was calculated. SO attained the D value of 0.716 while RL scored 0.060. Four of the six tolerant hybrids shared D value in the range of 0.700–0.905. The four tolerant hybrids identified through this comprehensive analysis should prove useful to the citrus industry provided that the tolerance to other biotic and abiotic stresses is evaluated.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"32 ","pages":"Article 101000"},"PeriodicalIF":3.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100268","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}

{"title":"Inside Front Cover - Editorial Board Page","authors":"","doi":"10.1016/S2452-2198(24)00158-7","DOIUrl":"10.1016/S2452-2198(24)00158-7","url":null,"abstract":"","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"32 ","pages":"Article 101003"},"PeriodicalIF":3.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100269","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}

{"title":"Suppression of canary grass (Phalaris minor) with simultaneous use of rhizobacteria and sunflower allelopathy","authors":"Abubakar Dar ,&nbsp;Umme Habiba ,&nbsp;Muhammad Tauseef Jaffar ,&nbsp;Maqshoof Ahmad ,&nbsp;Azhar Hussain ,&nbsp;Umar Farooq ,&nbsp;Sajid Mehmood Nadeem ,&nbsp;Muhammad Zahid Mumtaz ,&nbsp;Usman Zulfiqar ,&nbsp;Abd El-Zaher M.A. Mustafa ,&nbsp;Mohamed S. Elshikh","doi":"10.1016/j.rhisph.2024.100997","DOIUrl":"10.1016/j.rhisph.2024.100997","url":null,"abstract":"<div><div>Although the environmental and health challenges associated with conventional herbicide use are well-documented, studies comparing the potential of microbial and plant allelopathy for weed management remain limited. This study aims to fill this gap by evaluating the combined and individual impacts of <em>Pseudomonas fulva</em> T19 and sunflower extract on suppressing the weed canary grass (<em>Phalaris minor</em> Retz.) in wheat, offering a potential eco-friendly alternative to chemical herbicides. The experiment includes 10 treatments: 1) control, 2) sunflower soil incorporation 1% (1% SSI), 3) sunflower extract 2.5% (2.5% SE), 4) sunflower extract 5% (5% SE), 5) sunflower extract 10% (10% SE), 6) T19 bacterial strain (AB), 7) 1% SSI + AB, 8) 2.5% SE + AB, 9) 5% SE + AB, and 10) 10% SE + AB. Applying AB and SE significantly (<em>p</em> ≤ 0.05) suppressed the <em>P. minor</em> and promoted wheat's biochemical properties, growth, and yield. Specifically, AB + 10% SE notably promoted wheat root and shoot lengths (46.6 and18.1%) and their biomasses (38.5 and 30.1%) as compared to the control. Moreover the similar treatment also promoted chlorophyll ‘a’ and ‘b’ contents (32.8 and 28.7%), antioxidant enzymes (APX by 40.4%, CAT by 45.6% and POD by 40.2%), and grain yield per pot by 21.7% by causing the reduction in such characteristics of <em>P. minor</em>. Principal component analysis revealed a negative correlation between wheat and <em>P. minor</em> attributes under the influence of AB and SE allelopathy. Pearson correlation indicated positive correlations among wheat attributes and negative ones with <em>P. minor</em>. Ultimately, combining AB with SE synergistically enhanced wheat growth and yield by suppressing <em>P. minor</em>, suggesting a sustainable alternative to herbicides.</div></div>","PeriodicalId":48589,"journal":{"name":"Rhizosphere","volume":"32 ","pages":"Article 100997"},"PeriodicalIF":3.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757670","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}