Journal
PLANT CELL REPORTS
Volume 28, Issue 6, Pages 891-902Publisher
SPRINGER
DOI: 10.1007/s00299-009-0693-3
Keywords
MicroRNA; Microarray; Q-RT-PCR; Fragaria x ananassa; Micropropagation
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Funding
- National Natural Science Foundation of China [30671432]
- Program for New Century Excellent Talents in University [NCET-070565]
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MicroRNAs (miRNAs) are a class of small non-coding RNAs which play a critical role in plant growth and development. To detect strawberry miRNAs and discover the expression difference between conventional and micropropagated strawberry plants, we carried out the detection and quantification of strawberry miRNAs by microarray. The main findings were that 74 miRNAs were checked in strawberry plants and four miRNA genes displayed clear expression difference between conventional and micropropagated strawberry plants, including two up-regulated genes (miR535 and miR390) and two down-regulated genes (miR169a and miR169d). The ratios of conventionally propagated strawberry plant/micropropagated strawberry plant for miR535, miR390, miR169a and miR169d were 2.6884, 2.2673, 0.2496 and 0.3814, respectively. Quantitative reverse transcription polymerase chain reaction applied to the two up-regulated genes (miR535 and miR390) validated the microarray result. This is the first report on differential expression of miRNAs in conventional and micropropagated plants.
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