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Pearl millet seedlings infected with rust (Puccinia substriata)

ABSTRACT: Transcriptional profiling of rust-infected pearl millet seedlings over time [0h, 20h, 5d and 8d post infection (pi)]. Keywords: Time course, Stress response

ORGANISM(S): Cenchrus americanus

PROVIDER: GSE13479 | GEO | 2009/01/01

SECONDARY ACCESSION(S): PRJNA113993

REPOSITORIES: GEO

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Pearl millet seedlings infected with rust (Puccinia substriata)

Project description:Transcriptional profiling of rust-infected pearl millet seedlings over time [0h, 20h, 5d and 8d post infection (pi)]. Keywords: Time course, Stress response Loop design. All time points compared with time = 0 h in data analysis. Two biological replicates per sample, and one technical dye swap replicate.

2010-05-14 | E-GEOD-13479 | biostudies-arrayexpress

Pearl millet seedlings infected with rust, or treated with MeJA or SA

Project description:This SuperSeries is composed of the following subset Series: GSE13478: Pearl millet seedlings treated with methyl jasmonate (MeJA) GSE13479: Pearl millet seedlings infected with rust (Puccinia substriata) GSE13480: Pearl millet seedlings treated with salicylic acid (SA) Refer to individual Series

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A Spatiotemporal Transcriptome Revealed Stalk Development in Pearl Millet

Project description:Pearl millet is a major cereal crop that feeds more than 90 million people worldwide in arid and semi-arid regions. The stalk phenotypes of Poaceous grasses are critical for their productivity and stress tolerance, however, the molecular mechanisms governing stalk development in pearl millet remained to be deciphered. In this study, we spatiotemporally measured 19 transcriptomes for stalk internodes of four different early developmental stages. Data analysis of the transcriptomes defined 4 developmental zones on the stalks and identified 12 specific gene sets with specific expression patterns across the zones. Using weighted gene co-expression network analysis (WGCNA), we found that 2 co-expression modules together with candidate genes were involved in stalk elongation and thickening of pearl millet. Among the elongation-related candidate genes, we established by SELEX that a MYB-family transcription factor PMF7G02448 can bind to the promoters of three cell wall synthases genes (CesAs). In summary, these findings provide insights into stalk development and offer potential targets for future genetic improvement of pearl millet.

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Pearl millet seedlings treated with salicylic acid (SA)

Project description:Transcriptional profiling of SA-treated pearl millet seedlings over time [0, 12, 24 and 48 hours post treatment (hpt)]. Keywords: Time course, Stress response

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Pearl millet seedlings treated with methyl jasmonate (MeJA)

Project description:Transcriptional profiling of MeJA-treated pearl millet seedlings over time [0, 12, 24 and 48 hours post treatment (hpt)]. Keywords: Time course, Stress response

2009-01-01 | GSE13478 | GEO

Pearl millet seedlings treated with methyl jasmonate (MeJA)

Project description:Transcriptional profiling of MeJA-treated pearl millet seedlings over time [0, 12, 24 and 48 hours post treatment (hpt)]. Keywords: Time course, Stress response Loop design. All time points compared with time = 0 h in data analysis. Two biological replicates per sample, and one technical dye swap replicate.

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Pearl millet seedlings treated with salicylic acid (SA)

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Comparison of the root tip transcriptome of 2 pearl millet lines with contrasted root soil aggregation

Project description:We analyzed global gene expression in the crown tip of 2 pearl millet (Pennisetum glaucum) inbred lines with high (line 249) and low (line 220) root soil aggregation using RNAseq. The obtective was to identify genes potentially associated with changes in rhizosheath formation.

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Comparison of the root tip transcriptome of 2 pearl millet lines with contrasted primary root growth

Project description:We analysed global gene expression in the primary root tip of 2 pearl millet (Pennisetum glaucum) inbred lines with high (line 249) and low (line 337) primary root growth using RNAseq. The objective was to identify genes potentially associated with changes in root growth.

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Project description:Salinity stress poses a significant risk to agricultural yield and productivity. Therefore, elucidation of plant salt-response mechanisms has become essential to identify stress-tolerance genes. In the present study, two pearl millet genotypes with contrasting salt-tolerance showed differential morpho-physiological and proteomic responses under 150 mM NaCl, and the genotype IC 325825 could withstand salt-stress better than IP 17224. The salt-tolerance potential of IC 325825 was associated with its ability to maintain ionic, osmotic balance and membrane integrity under stress. The IC 325825 exhibited better growth under salinity as compared to IP 17224 due to higher expression of C4 photosynthesis enzymes, efficient antioxidant system, and lower Na+/K+ ratio. Comparative proteomics analysis revealed greater metabolic perturbation in IP 17224 under salinity, in contrast to IC 325825 that harbored pro-active stress-responsive machinery, allowing its survival and better adaptability under salt-stress. The differentially expressed proteins were in-silico characterized for their functions, subcellular-localization, pathway/ interaction analysis, and relative transcript levels. This study has provided novel insights into salinity stress adaptive mechanisms in pearl millet, demonstrating the power of proteomics-based approaches. The critical proteins identified in the present study could be further explored as potential objects for increasing salt-tolerance in sensitive crop plants.

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