NDLI: Identification and characterization of a novel miR159 target not related to MYB in tomato

Content Provider	Springer Nature Link
Author	Buxdorf, Kobi Hendelman, Anat Stav, Ran Lapidot, Moshe Ori, Naomi Arazi, Tzahi
Copyright Year	2010
Abstract	MicroRNA 159 (miR159) is a highly conserved miRNA with roles in flowering under short days, anther development and seed germination via repression of GAMYB-like genes. In tomato, the function of miR159 (Sl-miR159) is currently unknown and target transcripts have not been experimentally validated. Here, we identified and characterized a new miR159 target gene (SGN-U567133) in Solanum lycopersicum (tomato) that is not related to MYB. SGN-U567133 is predominantly expressed in flowers and encodes a nuclear-localized protein that contains a unique NOZZLE-like domain at its N terminus. In tomato, SGN-U567133 represents a small gene family and orthologs have been identified in other plant species, all containing a conserved miR159 target site in their coding sequence. Accordingly, 5′-RACE cleavage assay supported miRNA-mediated cleavage of SGN-U567133 transcripts in vivo. Moreover, the SGN-U567133 transcript accumulated in P19-HA-expressing tomato leaves in which miRNA-mediated cleavage is inhibited. In addition, transgenic tomato plants expressing a miR159-resistant form of SGN-U567133 accumulated higher levels of the SGN-U567133 transcript and exhibited defects in leaf and flower development. Together, our results suggest that SGN-U567133 represents a novel class of miR159 targets in plants and raise the possibility that its post-transcriptional regulation by Sl-miR159 is essential for normal tomato development.
Starting Page	1009
Ending Page	1022
Page Count	14
File Format	PDF
ISSN	00320935
Journal	Planta
Volume Number	232
Issue Number	5
e-ISSN	14322048
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-07-27
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flower Development Leaf MiRNA MiR159 Tomato Ecology Forestry Agriculture Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science

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