miR319 was the first plant miRNA discovered via forward genetic mutation screening. In this study, we found that miR319 family members had similar sequences but different expression patterns in and RT-PCR analysis revealed that and had similar expression patterns and were widely expressed in plant development, whereas could only be detected in stems. The overexpression of each family member in could inhibit cell division and function in leaf and petal morphogenesis. Bra-miR319a formed a new regulatory relationship after whole genome triplication, and overexpressing in led to the degradation of pollen content and affected the formation of intine, thereby causing pollen abortion. Our results suggest that family members have functional similarity and difference in plant development.
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| http://dx.doi.org/10.3390/genes10120952 | DOI Listing |
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