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| Status |
Public on Feb 13, 2014 |
| Title |
The Transition from Primary siRNAs to Amplified Secondary siRNAs that Regulate Chalcone Synthase During Development of Glycine max Seed Coat |
| Organism |
Glycine max |
| Experiment type |
Non-coding RNA profiling by high throughput sequencing
|
| Summary |
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 had a higher proportion of siRNAs representing the CHS1-3-4 gene family members, consistent with this region as the origin of the primary siRNAs. More intriguingly, the very young seed had a higher proportion of 22-nt CHS siRNAs than did the mid-maturation seed. We infer that the primary CHS siRNAs increase during development to levels sufficient to trigger amplification of secondary CHS siRNAs from the CHS7/8 target mRNAs, enabling the total levels of 21-nt CHS siRNAs to rise dramatically. Further, we demonstrate that the soybean system exhibits tissue-specific CHS siRNA production because primary CHS siRNA levels are not sufficient to trigger secondary amplification in tissues other than the seed coat.
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| Overall design |
High-throughput sequencing using Genome Analyzer II and Illumina HiSeq 2000 was performed with two biological replicates (Some stages don't have replicate).
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| Contributor(s) |
Cho YB, Jones SI, Vodkin LO |
| Citation(s) |
24204712 |
| |
| Submission date |
Jan 08, 2013 |
| Last update date |
May 15, 2019 |
| Contact name |
Lila O. Vodkin |
| E-mail(s) |
[email protected]
|
| Phone |
217-244-6147
|
| Organization name |
University of Illinois
|
| Department |
Crop Sciences
|
| Lab |
Lila Vodkin
|
| Street address |
1201 W. Gregory Dr.
|
| City |
Urbana |
| State/province |
IL |
| ZIP/Postal code |
61801 |
| Country |
USA |
| |
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| Platforms (2) |
| GPL11192 |
Illumina Genome Analyzer II (Glycine max) |
| GPL15008 |
Illumina HiSeq 2000 (Glycine max) |
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| Samples (17)
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| Relations |
| BioProject |
PRJNA185754 |
| SRA |
SRP017813 |
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