Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.7/221
Título: MicroRNA activity in the Arabidopsis male germline
Autor: Borges, F.
Pereira, P.A.
Slotkin, R.K.
Martienssen, R.A.
Becker, J.D.
Palavras-chave: Arabidopsis
male germ cells
microRNA
post-transcriptional gene silencing
pollen
Data: Mar-2011
Editora: Oxford University Press
Citação: Borges, F., Pereira, P.A., Slotkin, R.K, Martienssen, R.A. , Becker, J.D. MicroRNA activity in the Arabidopsis male germline. (2011). Journal of Experimental Botany. 62 (5): 1611-1620 Sp. Iss.
Resumo: Most of the core proteins involved in the microRNA (miRNA) pathway in plants have been identified, and almost simultaneously hundreds of miRNA sequences processed in the Arabidopsis sporophyte have been discovered by exploiting next-generation sequencing technologies. However, there is very limited understanding about potentially distinct mechanisms of post-transcriptional regulation between different cell lineages. In this review the focus is on the Arabidopsis male gametophyte (pollen), where the germline differentiates after meiosis giving rise to the male gametes. Based on comparative analysis of miRNAs identified in sperm cells by in-depth sequencing, their possible functions during germ cell specification and beyond fertilization are discussed. In addition, 25 potentially novel miRNAs processed in sperm cells and pollen were identified, as well as enriched variations in the sequence length of known miRNAs, which might indicate subfunctionalization by association with a putative germline-specific Argonaute complex. ARGONAUTE 5 (AGO5), by close homology to AGO1 and localizing preferentially to the sperm cell cytoplasm in mature pollen, may be part of such a complex.
Peer review: yes
URI: http://hdl.handle.net/10400.7/221
ISSN: 00220957
Versão do Editor: http://dx.doi.org/10.1093/jxb/erq452
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