Alfalfa (Medicago sativa L.) pho2 mutant plants hyperaccumulate phosphate
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ABSTRACT:
PROVIDER: PRJNA810484 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18145606_1.fastq.gz | Fastqsanger.gz | |||
| SRR18145606_2.fastq.gz | Fastqsanger.gz | |||
| SRR18145607_1.fastq.gz | Fastqsanger.gz | |||
| SRR18145607_2.fastq.gz | Fastqsanger.gz | |||
| SRR18145608_1.fastq.gz | Fastqsanger.gz |
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Similar Datasets
Project description:Alfalfa (Medicago sativa L.) pho2 mutant plants hyperaccumulate phosphate [RNA-seq]
| PRJNA810492 | ENA
Project description:Alfalfa (Medicago sativa L.) pho2 mutant plants hyperaccumulate phosphate [Iso-seq]
| PRJNA810491 | ENA
Project description:Arbuscular mycorrhizas (AM) are the most common symbiotic associations between plant’s root compartment and fungi. They can provide both nutritional benefit (mostly inorganic phosphate) leading to improved growth and non-nutritional benefits including defense responses to environmental cues throughout the host plant, which in return delivers carbohydrates to the symbiont. However how transcriptional changes occurring in AM leaves differ from those induced by phosphate fertilization is poorly understood. We investigated systemic changes in the leaves of mycorrhized Medicago truncatula compared to non-mycorrhized control plants, and in phosphate fertilized plants compared to control plants.
2016-04-26 | GSE80610 | GEO
Project description:In this article, we describe a set of novel alfalfa (Medicago sativa L.) plants that hyper-accumulate Phosphate ion (Pi) at levels 3- to 6-fold higher than wild-type. This alfalfa germplasm will have practical applications reclaiming Pi from contaminated or enriched soil or be used in conservation buffer strips to protect waterways from Pi run-off. Hyper-accumulating alfalfa plants were generated by targeted mutagenesis of PHOSPHATE2 (PHO2) using newly created CRISPR/Cas9 reagents and an improved mutant screening strategy. PHO2 encodes a ubiquitin conjugating E2 enzyme (UBC24) previously characterized in Arabidopsis thaliana, Medicago truncatula, and Oryza sativa. Mutations of PHO2 disrupt Pi homeostasis resulting in Pi hyper-accumulation. Successful CRISPR/Cas9 editing of PHO2 demonstrates that this is an efficient mutagenesis tool in alfalfa despite its complex autotetraploid genome structure. Arabidopsis and M. truncatula ortholog genes were used to identify PHO2 haplotypes in outcrossing tetraploid M. sativa with the aim of generating heritable mutations in both PHO2-like genes (PHO2-B and PHO2-C). After delivery of the reagent and regeneration from transformed leaf explants, plants with mutations in all haplotypes of PHO2-B and PHO2-C were identified. These plants were evaluated for morphology, Pi accumulation, heritable transmission of targeted mutations, segregation of mutant haplotypes and removal of T-DNA(s). The Agrobacterium-mediated transformation assay and gene editing reagents reported here were also evaluated for further optimization for future alfalfa functional genomic studies.
| S-EPMC9157135 | biostudies-literature
Project description:We used an M. truncatula 16K oligonucleotide array to profile gene expression in the leaves of transgenic alfalfa plants expressing Medicago truncatula isoflavone synthase 1 (MtIFS1). RNA purified from leaves of MtIFS1-expressing lines C22 and B20 and vector control line VC11 was used to generate Cy5-labeled cDNA. RNA purified from a second vector control line, VB2, was used to generate Cy3-labeled reference cDNA. Three independently propagated cuttings of each line were used and a total of nine hybridizations were performed. Our results indicated that MtIFS1-expression does not significantly alter global gene expression in the leaves. Keywords = Medicago Keywords = isoflavone synthase Keywords = alfalfa Keywords: other
2005-07-20 | GSE2546 | GEO
Project description:Alkaline salts (e.g., NaHCO3 and Na2CO3) causes more severe morphological and physiological damage to plants than neutral salts (e.g., NaCl and Na2SO4) due to differences in pH. The mechanism by which plants respond to alkali stress is not fully understood, especially in plants having symbotic relationships such as alfalfa (Medicago sativa L.). Therefore, a study was designed to evaluate the metabolic response of the root-nodule symbiosis in alfalfa under alkali stress using comparative metabolomics. Rhizobium-nodulized (RI group) and non-nodulized (NI group) alfalfa roots were treated with 200 mmol/L NaHCO3 and, roots samples were analyzed for malondialdehydyde (MDA), proline, glutathione (GSH), superoxide dismutase (SOD), and peroxidase (POD) content. Additionally, metabolite profiling was conducted using gas chromatography combined with time-of-flight mass spectrometry (GC/TOF-MS). Phenotypically, the RI alfalfa exhibited a greater resistance to alkali stress than the NI plants examined. Physiological analysis and metabolic profiling revealed that RI plants accumulated more antioxidants (SOD, POD, GSH), osmolytes (sugar, glycols, proline), organic acids (succinic acid, fumaric acid, and alpha-ketoglutaric acid), and metabolites that are involved in nitrogen fixation. Our pairwise metabolomics comparisons revealed that RI alfalfa plants exhibited a distinct metabolic profile associated with alkali putative tolerance relative to NI alfalfa plants. Data provide new information about the relationship between non-nodulized, rhizobium-nodulized alfalfa and alkali resistance.
2018-07-27 | MTBLS481 | MetaboLights
Project description:This SuperSeries is composed of the SubSeries listed below.
2022-03-31 | GSE197482 | GEO
Project description:By comparing transcriptomes of tolerant and intolerant plants of sickle alfalfa subject to intensive animal grazing, we identified pathways involved in nutrient-responsive signaling, light and wound response, cell wall formation, and energy metabolism. In these pathways, grazing suppressed 39 genes, but less severe in the tolerant plant, and activated 5 genes all carrying polymorphisms in their homologous transcripts between the tolerant and intolerant plants. These genes and pathways - responsive to grazing and differentially expressed between the tolerant and intolerant plants – underline a defense mechanism in alfalfa against grazing stresses.
2016-08-24 | GSE50430 | GEO
Project description:• Phosphate starvation response (PHR) transcription factors play essential roles in regulating phosphate uptake in plants through binding to the P1BS cis-element in the promoter of phosphate starvation response genes. Recently, PHRs were also shown to positively regulate arbuscular mycorrhizal colonization in rice and lotus by controlling the expression of a large set of symbiotic genes. However, their role in arbuscule development has remained unclear. In Medicago we previously showed that arbuscule degradation is controlled by two SPX proteins that are highly expressed in arbuscule-containing cells. Since SPX proteins bind to PHRs and repress their activity in a phosphate-dependent manner, we investigated whether arbuscule maintenance is also regulated by PHR. • Here, we show that MtPHR2 is a major regulator of the phosphate starvation response in Medicago. Knock-out of mtphr2 showed reduced phosphate starvation response, symbiotic gene expression and AM colonization levels. However, the arbuscules that formed showed less degradation, suggesting a negative role for PHR2 in arbuscule maintenance. This was supported by the observation that overexpression of MtPHR2 led to enhanced degradation of arbuscules. Although many arbuscule-induced genes contain P1BS elements in their promoters, we found that the P1BS cis-elements in the promoter of the symbiotic phosphate transporter MtPT4 are not required for arbuscule-containing cell specific expression. • These results indicate that MtSPX1 and MtSPX3 control arbuscule maintenance independent from PHR2. While MtPHR2 potentiates symbiotic gene expression and colonization, its activity in arbuscule-containing cells needs to be tightly controlled to maintain a successful symbiosis in Medicago.
2024-01-19 | GSE252717 | GEO