Journal
PLANT SIGNALING & BEHAVIOR
Volume 7, Issue 7, Pages 882-884Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.20463
Keywords
viroid-plant interaction; Avsunviroidae compartmentalization; intracellular sorting of non coding RNAs; nucleus-chloroplast signaling; non coding RNAs and plant physiology
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Funding
- Spanish granting agency Direccion General de Investigacion Cientifica [BIO2011-25018]
- Generalitat Valenciana [2011/003]
- Consejo Superior de Investigaciones Cientificas
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Viroids belonging to the family Avsunviroidae are the only functional RNAs known to traffic selectively into chloroplasts. Subcellular targeting is a critical step in guaranteeing their access to the machineries involved in their replication. However, the host mechanisms exploited by these non coding pathogenic RNAs to be selectively imported into chloroplasts are poorly understood. Recently, we provide evidence supporting the idea that the Avsunviroidae have evolved to subvert a signaling mechanism between the nucleus and chloroplasts to regulate their differential compartmentalization into the chloroplast of infected cells. Here, we discuss our model and previous observations that provide biological relevance to our hypothesis.
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