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ABSTRACT: Bacteria isolated from alfalfa

PROVIDER: PRJNA884125 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR21705845_1.fastq.gz	Fastqsanger.gz
	SRR21705845_2.fastq.gz	Fastqsanger.gz
	SRR21705846_1.fastq.gz	Fastqsanger.gz
	SRR21705846_2.fastq.gz	Fastqsanger.gz

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Pediococcus pentosaceus/Lactiplantibacillus pentosus/Lactococcus lactis/Lactiplantibacillus plantarum

Project description:Genome of Lactic Acid Bacteria Isolated from Alfalfa phyllospheric

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nar nodule vs root transcriptome-analysis of symbiotic root nodule development

Project description:12plex_medicago_2014_02 - nar nodule vs root transcriptome - which are the genes differentially expressed in alfalfa spontaneous (non rhizobium-infected) nodules vs. control roots? - biological material: aeroponically grown cuttings of a Medicago sativa (alfalfa) accession that produces empty nodules when nitrogen-starved. Samples for transcriptome comparison: isolated NAR nodules (10 days post N-starvation) vs. roots of the same plants (pools of 3 roots).

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Project description:Alfalfa rhizosphere bacteria

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Transcription profiling by array of Rhizobium leguminosarum biovar viciae strain Rlv3841grown in pea, alfalfa or sugarbeet rhizospheres compared to bacteria grown on glucose ammonia AMS medium

Project description:Rhizobium leguminosarum biovar viciae strain Rlv3841 was grown for 7 d in the pea or alfalfa or sugarbeet rhizosphere (plants all 7 d old at inoculation) and compared against bacteria grown on glucose ammonia AMS medium in the laboratory.

2010-08-04 | E-MEXP-2852 | biostudies-arrayexpress

Small RNA-seq for alfalfa roots under alkaline stress

Project description:Abstract: In order to understand the expression patterns of miRNAs in alfalfa under alkali stress, small RNA sequencing was performed on alfalfa roots at different time points under alkali stress, and miRNAs were identified and analyzed.

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Project description:Bacteria in alfalfa silage

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Genotype- and tissue-specific microRNA profiles and their targets in three alfalfa (Medicago sativa L) accessions

Project description:Alfalfa (Medicago sativa L.) is a forage legume with significant agricultural value worldwide. MicroRNAs (miRNAs) are key components of post-transcriptional gene regulation and essentially control almost all aspect of plant growth and development. Although miRNAs have been reported from alfalfa but their expression profiles in different tissues and novel miRNAs as well as their targets have not been confirmed in this plant species. Therefore, we sequenced small RNAs in whole plantlets, shoots and roots of three different alfalfa genotypes (Altet-4, NECS-141 and NF08ALF06) to identify tissue-specific profiles. After comprehensive analysis using bioinformatics methods, we have identified 100 miRNA families, of which 21 belongs to the highly conserved families whereas the remaining 79 families are conserved between M. truncatula and M. sativa. The profiles of the six highly expressed conserved miRNA families (miR156, 159, 166, 319, 396, 398,) were relatively similar between the plantlets, roots and shoots of three genotypes. Contrastingly, the differenecs were robust between shoots and roots for miR160 and miR408 levels, which were low in roots compared to shoots. The study also has identified 17 novel miRNAs that also differed in their abundanecs between tissues of the alfalfa genotypes. Additionally, we have generated and analyzed the degradome libraries from three alfalfa genotypes that has confirmed 69 genes as targets for 31 miRNA families in alfalfa. The identification of conserved and novel miRNAs as well as their targets in different tissues of three genotypes not only enhanced our understanding of miRNA-mediated gene regulation in alfalfa but could also be useful for practical applications in alfalfa as well as related legume species.

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Transcriptomic analysis of Alfalfa response to low selenium concentration

Project description:We studied the application of transcriptome technology in alfalfa selenium (Se) treatment. Alfalfa had different states after different concentrations of Se treatment. It shows that lower concentration promoted growth and higher concentration produced toxicity. The positive regulatory effects of moderate Se (100 mg / kg) on alfalfa was determined through preliminary experiments, and the gene expression of Alfalfa under this treatment was further analyzed by transcriptome.

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Project description:Rhizosphere microbiota of alfalfa (bacteria)

| PRJNA1124538 | ENA

Transcriptome Profiles of Medicago Stem Internodes

Project description:Advances in alfalfa [Medicago sativa (L.) subsp. sativa] breeding, molecular genetics and genomics have been slow because this crop is an allogamous autotetraploid (2n = 4x = 32) with complex polysomic inheritance. Increasing cellulose and decreasing lignin in alfalfa stem cell walls would improve this crop as a cellulosic ethanol feedstock. We selected two alfalfa genotypes (252, 1283) that differ in cellulose and Klason lignin concentration in stem cell walls. Analysis of GeneChip expression data files of alfalfa stem internodes of genotypes 252 and 1283 at two growth stages (elongating, post-elongation) revealed 10,887 SFPs in 8,230 probe sets. Validation analysis by PCR-sequencing of a random sample of SFPs indicated a 12% false discovery rate. Functional classification and over-representation analysis showed that both genotypes were highly enriched in SFP-harboring cell wall genes. We mapped 5,833 of the 8,230 SFP-harboring genes onto putative orthologous loci on Medicago truncatula chromosomes. Clustering and over-representation of SFP-harboring genes within the same functional class (e.g. cell wall genes) was observed on some chromosomes. Prior to analysis of expression data for the two alfalfa genotypes, SFP probes were masked to reduce false positives and false negatives. The combination of SFP and gene expression analysis provide a list of candidate cell wall genes that can be used as molecular markers in a breeding program to improve alfalfa as a cellulosic feedstock. The results of this study will also be useful in advancing understanding of genome organization in alfalfa and for comparative genomics research with other legume species. Keywords: Stem development and genotype comparison

2009-05-28 | GSE13602 | GEO

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