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Rice stem at early stage growth: Control vs.Chromosome segment substitution lines (SLs) from a cross the Koshihikari (japonica) and Habataki (indica)

ABSTRACT: By performing QTL mapping using 82 backcross inbred lines (BILs) of the Koshihikari (japonica) and Habataki (indica) cultivars for the rice initial growth, we identified two QTLs, qEPD1 and qEPD2, responsible for modulating plant height and/or leaf sheath length. To narrow down the number of candidate genes of each QTL, we conducted transcriptional profiling using RNAs isolated from the vegetative stem of Koshihikari and its two substituted lines (SL) with the Habataki qEPD1 or qEPD2 allele.

ORGANISM(S): Oryza sativa Oryza sativa Japonica Group

PROVIDER: GSE35762 | GEO | 2012/04/01

SECONDARY ACCESSION(S): PRJNA152105

REPOSITORIES: GEO

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Rice stem at early stage growth: Control vs.Chromosome segment substitution lines (SLs) from a cross the Koshihikari (japonica) and Habataki (indica)

Project description:By performing QTL mapping using 82 backcross inbred lines (BILs) of the Koshihikari (japonica) and Habataki (indica) cultivars for the rice initial growth, we identified two QTLs, qEPD1 and qEPD2, responsible for modulating plant height and/or leaf sheath length. To narrow down the number of candidate genes of each QTL, we conducted transcriptional profiling using RNAs isolated from the vegetative stem of Koshihikari and its two substituted lines (SL) with the Habataki qEPD1 or qEPD2 allele. Expression profiling with the rice 44K-Agilent microarray (Agilent-028517) was conducted using RNAs extracted from the 30-day-old vegetative stem of the corresponding lines. Each dataset was obtained from three biological replicates.

2012-03-31 | E-GEOD-35762 | biostudies-arrayexpress

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Transcription profiling of indica rice cultivar FR13A under submergence treatment.

Project description:An indica rice cultivar FR13A, is widely grown as submergence tolerant variety and can withstand submergence up to two weeks. The tolerance is governed by a major QTL on chromosome 9 and represented as sub1. Recently the gene for sub1 has been mapped and cloned. However, the trait is governed by several QTLs and not by a single gene. To understand the mechanism of submergence tolerance we selected, two indica rice genotypes namely, I) FR13A, a tolerant indica variety and ii) IR24, a susceptible genotype for this study. We used the 22K rice Oligoarray from Agilent technologies to study the transcript profile in the leaves of the two contrasting rice genotypes under constitutive and submerged conditions at seedling stage. SUBMITTER_CITATION: Combining In Silico Mapping and Arraying: an Approach to Identifying Common Candidate Genes for Submergence Tolerance and Resistance to Bacterial Leaf Blight in Rice. Mol. Cells 2007 24:394-408. Experiment Overall Design: We used Agilent rice gene chips (G4138A) to investigate the transcript level changes in rice leaf tissues during submergence treatment. We used two contrasting rice genotypes (FR13A tolerant and IR24 susceptible) differing in submergence response. Plants were grown in growth chambers and treated by submerging the plants in transparent polythene bags on14th DAS. Leaf sampling was done in both constitutive and treated plants at 3 time points. Two replications of microarray experiments were carried out by hybridizing the RNA from tolerant samples against the susceptible lines.

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Waltheria indica DCM extracts positive ionization mode

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