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Soil bacteria

ABSTRACT: Peanut-based intercropping systems altered soil bacterial communities, potential functions, and crop yield

PROVIDER: PRJNA1006275 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25679300_1.fastq.gz	Fastqsanger.gz
	SRR25679300_2.fastq.gz	Fastqsanger.gz
	SRR25679301_1.fastq.gz	Fastqsanger.gz
	SRR25679301_2.fastq.gz	Fastqsanger.gz
	SRR25679287_1.fastq.gz	Fastqsanger.gz

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Comparative transcriptomic analysis of the roots of intercropped maize by microarray

Project description:Intercropping is a vital technology in resource-limited agricultural systems with low inputs. Peanut/maize intercropping enhances iron (Fe) nutrition in calcareous soil. Proteomic studies of the differences in peanut leaves, maize leaves and maize roots between intercropping and monocropping systems indicated that peanut/maize intercropping not only improves Fe availability in the rhizosphere but also influences the levels of proteins related to carbon and nitrogen metabolism. Moreover, intercropping may enhance stress resistance in the peanut plant (Xiong et al. 2013b). Although the mechanism and molecular ecological significance of peanut/maize intercropping have been investigated, little is known about the genes and/or gene products in peanut and maize roots that mediate the benefits of intercropping. In the present study, we investigated the transcriptomes of maize roots grown in intercropping and monocropping systems by microarray analysis. The results enabled exploration differentially expressed genes in intercropped maize. Peanut (Arachis hypogaea L. cv. Luhua14) and maize (Zea mays L. cv. Nongda108) seeds were grown in calcareous sandy soil in a greenhouse. The soil was enhanced with basal fertilizers [composition (mg·kg−1 soil): N, 100 (Ca (NO3)2·4H2O); P, 150 (KH2PO4); K, 100 (KCl); Mg, 50 (MgSO4·7H2O); Cu, 5 (CuSO4·5H2O); and Zn, 5 (ZnSO4·7H2O)]. The experiment consisted of three cropping treatments: peanut monocropping, maize monocropping and intercropping of peanut and maize. After germination of peanut for 10 days, maize was sown. Maize samples were harvested after 63 days of growth of peanut plants based on the degree of Fe chlorosis in the leaves of monocropped peanut. The leaves of monocropped peanut plants exhibited symptoms of Fe-deficiency chlorosis at 63 days, while the leaves of peanut plants intercropped with maize maintained a green color.

2017-01-24 | GSE93771 | GEO

Legume rhizodeposition promotes nitrogen fixation by soil microbiota under crop diversification

Project description:<p>Biological nitrogen fixation by free-living bacteria and rhizobial symbiosis with legumes plays a key role in sustainable crop production. Here, we study how different crop combinations influence the interaction between peanut plants and their rhizosphere microbiota via metabolite deposition and functional responses of free-living and symbiotic nitrogen-fixing bacteria. Based on a long-term (8 year) diversified cropping field experiment, we find that peanut co-cultured with maize and oilseed rape lead to specific changes in peanut rhizosphere metabolite profiles and bacterial functions and nodulation. Flavonoids and coumarins accumulate due to the activation of phenylpropanoid biosynthesis pathways in peanuts. These changes enhance the growth and nitrogen fixation activity of free-living bacterial isolates, and root nodulation by symbiotic Bradyrhizobium isolates. Peanut plant root metabolites interact with Bradyrhizobium isolates contributing to initiate nodulation. Our findings demonstrate that tailored intercropping could be used to improve soil nitrogen availability through changes in the rhizosphere microbiome and its functions.</p>

2024-03-19 | MTBLS6537 | MetaboLights

Gene expression profiling of resistance genes to salt stress in roots of peanut (Arachis hypogaea L.)

Project description:Investigation of resistance genes from 36,158 peanut ESTs after salt stress treatment, compared with untreated peanut. Yield some useful insights into salt-mediated signal transduction pathways in peanut.

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Gene expression profiling of resistance genes to low temperature in leaves of peanut (Arachis hypogaea L.)

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Project description:Soil salinity is one of the major factors that limits area of cultivable land and yield potential of crops. Considered as a moderately salt sensitive economically-important crop, biological processes involved in salt stress response in peanut remain elusive. Publishing of the genomic sequence of cultivar peanut represent a new opportunity for further research. ABA INSENSITIVE 4 (ABI4) is an evolutionary conserved transcription factor. Mutation of ABI4 in Arabidopsis enhanced salt tolerance of seedlings significantly by targeting and down-regulating of HKT1;1. However, few achievements were reported in other aspects. In this study, AhABI4s in peanut were first cloned and silenced via virus-induced gene silencing method. Phenotype analysis showed that down-regulation of AhABI4s enhanced salt tolerance of peanut significantly. According to proteome and phosphoproteome analysis, expression of 1,900 proteins and 2,620 phosphorylation sites were predicted to be affected by silencing of AhABI4s under salt stress. Proteins with ion transporting activity were enriched by GO analysis. Further analysis showed that, 31 proteins may participate in homeostasis maintain of Na+, K+, Ca2+, H+ and Cl- in plant cells. Combined transcriptome and proteome analysis indicated that 63 genes may regulated by AhABI4s directly and 7 of them, ABI5-like5, RABA1f, SCAMP3, PK, RP-S26e, HSP70, cysteine proteinase inhibitor, were able to interact with the predicted ion transporters. Silencing of AhABI4s altered down-stream protein-protein interaction network to regulate expression/phosphorylation level of ion transporters, and finally influence homeostasis under salt stress. This work provides novel insights for salt response mechanism research and offer important evidence for protein function study.

2021-07-18 | PXD015090 | Pride

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Project description:Stressful environmental conditions, including heat stress (HS), are a major limiting factor in crop yield. Understanding the molecular mechanisms of plant stress memory and resilience is important for improving crop yield. We performed a sRNA-seq to reveal the biological pathways and potential functional inter-layer associations affected by HS

2023-03-17 | E-MTAB-12739 | biostudies-arrayexpress

Project description:sugarcane and peanut intercropping

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Project description:Temporal soil bacterial community responses to cropping systems and crop identity

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Multi-omic dissection of heat stress memory responses in Brachypodium distachyon - DNA methylation data

Project description:Stressful environmental conditions, including heat stress (HS), are a major limiting factor in crop yield. Understanding the molecular mechanisms of plant stress memory and resilience is important for improving crop yield. We performed a temporal atlas of DNA methylation to reveal the biological pathways and potential functional inter-layer associations affected by HS

2023-03-17 | E-MTAB-12727 | biostudies-arrayexpress

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