Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Tissue specific expression of chalcone synthase siRNAs

ABSTRACT: In a previous study, seed coat and cotyledon tissues of Williams, Richland and T157 soybean lines were investigated to show tissue specificity of CHS siRNA expression (Tuteja et al., 2009). Here, we investigated more tissues such as leaf, root and germinating cotyledon to ascertain the tissue specificity of CHS siRNAs in Williams. Data from multiple small RNA libraries were sequenced deeply by the Illumina high-throughput sequencing technology. The total numbers of small RNA reads were from three million to thirty million, providing sufficient data to show the tissue specificity of CHS siRNA. High-throughput sequencing using Genome Analyzer II and Illumina HiSeq 2000 was performed.

ORGANISM(S): Glycine max

SUBMITTER: Lila Vodkin

PROVIDER: E-GEOD-49708 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

The transition from primary siRNAs to amplified secondary siRNAs that regulate chalcone synthase during development of Glycine max seed coats.

Cho Young B YB Jones Sarah I SI Vodkin Lila L

PloS one 20131021 10

The I locus is a 27-kb inverted repeat cluster of chalcone synthase genes CHS1-3-4 that mediates siRNA down-regulation of CHS7 and CHS8 target mRNAs during seed development leading to yellow seed coats lacking anthocyanin pigments. Here, we report small RNA sequencing of ten stages of seed development from a few days post fertilization through maturity, revealing the amplification from primary to secondary short interfering RNAs (siRNAs) occurring during development. The young seed populations h ...[more]

PMID: 24204712

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Project description:To understand gene expression networks leading to functional properties and compositional traits of the soybean seed, we have undertaken a detailed examination of soybean seed development from a few days post-fertilization to the mature seed using Illumina high-throughput transcriptome sequencing (RNA-Seq). RNA was sequenced from seven different stages of seed development, yielding between 12 million and 78 million sequenced transcripts. These have been aligned to the 79,000 gene models predicted from the soybean genome recently sequenced by the Department of Energy Joint Genome Institute. Over one hundred gene models were identified with high expression exclusively in young seed stages, starting at just four days after fertilization. These were annotated as being related to many basic components and processes such as histones and proline-rich proteins. Genes involved with some storage proteins such as glycinin and beta-conglycinin had their highest expression levels at the stages of largest fresh weight, confirming previous knowledge that these storage products are being rapidly accumulated before the seed begins the desiccation process. Other gene models showed high expression in the dry, mature seeds, perhaps indicating the preparation of pathways needed later, in the early stages of imbibition. Many highly-expressed gene models at the dry seed stage are, as expected, annotated as hydrophilic proteins associated with low water conditions, such as late embryogenesis abundant (LEA) proteins and dehydrins, which help preserve the cellular structures and nutrients within the seed during desiccation. Hundreds of transcription factors with notable expression in at least one stage of seed development were also identified and examined. Results from a second biological replicate demonstrate high reproducibility of these data. High-throughput sequencing using Illumina Genome Analyzer II and Illumina HiSeq 2000 (RNA-Seq) was performed on seven stages of soybean seeds, with two biological replicates per stage.

Dataset Information

Tissue specific expression of chalcone synthase siRNAs

Publications

The transition from primary siRNAs to amplified secondary siRNAs that regulate chalcone synthase during development of Glycine max seed coats.

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