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Transcriptome analysis of differentially expressed genes in different pod dehiscence characteristics of soybean

ABSTRACT: Transcriptome analysis of differentially expressed genes in different pod dehiscence characteristics of soybean

PROVIDER: PRJNA533590 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8926860_1.fastq.gz	Fastqsanger.gz
	SRR8926860_2.fastq.gz	Fastqsanger.gz
	SRR8926861_1.fastq.gz	Fastqsanger.gz
	SRR8926861_2.fastq.gz	Fastqsanger.gz
	SRR8926862_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis of differentially expressed genes in different pod dehiscence characteristics of soybean

Project description:Pod dehiscence is an important agronomic trait. Pod dehiscence would cause huge yield losses before soybean maturity. Although some of soybean pod dehiscence associated genes have been identified, the underlying mechanism of pod dehiscence is still not comprehensively explained. In this study, we have identified differentially expressed genes (DEGs) between shattering-resistant and shattering-susceptible soybean accessions based on transcriptome analyses of 10 soybean accessions. Long non-coding RNAs (lncRNAs) that may be involved in soybean pod dehiscence were also identified, and we constructed co-expression networks between mRNAs and lncRNAs. RNA sequencing results were further verified by real-time PCR. Furthermore, DEGs were screened through analyzing positions of soybean pod dehiscence quantitative trait locus (QTLs) and phenotypes of soybean pod dehiscence for achieving pod-dehiscence candidate genes.

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Project description:Soybean is a rich source of protein and oil and a primary feedstock for biodiesel production. Previous research on soybean indicated that protein, oil and yield are controlled quantitatively in soybean seeds. However, genetic mechanisms controlling seed composition and yield in soybean remain unknown. We used Affymetrix Soybean GeneChips® to identify genes that are differentially expressed between developing seeds of the Minsoy and Archer soybean varieties, which differ in seed weight, yield, protein content and oil content. Some of the differentially expressed genes identified in this study may play important roles in controlling these traits. The soybean plants of two soybean varieties Minsoy and Archer and two recombinant inbred lines from the cross that are similar in maturity but differ in yield were grown in St Paul, Minnesota during the summers of 2007 and 2008. In 2007, each line was planted as a single row. In 2008, a randomized complete block (RCB) design was used and each line had 3 replicates planted 1-2 weeks apart. Within each replicate, two rows per line were planted. Seeds were harvested at three developmental stages, namely, seed length = 2 mm, 3.5 mm, and 5-6 mm, which correspond approximately to soybean reproductive stages R4, R5 and early R6, respectively. In 2007 three independent samples were collected for each line and developmental stage. In 2008, two seed samples (one from each row) were collected for each line at each stage within each replicate. The pairs of seed samples were then pooled. Thus, three sets of independent tissue samples were collected for RNA extraction and hybridization on Affymetrix microarrys.

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