Plant Mol Biol (2017) 94:97–107 DOI 10.1007/s11103-017-0595-7 The small auxin-up RNA OsSAUR45 affects auxin synthesis and transport in rice 1,2 2 2 2 2 2 Yan-Xia Xu · Meng-Zhu Xiao · Yan Liu · Jun-Liang Fu · Yi He · De-An Jiang Received: 2 July 2016 / Accepted: 16 February 2017 / Published online: 20 March 2017 © Springer Science+Business Media Dordrecht 2017 Abstract family proteins (OsYUCCAs) and PIN-FORMED family Key message This research is the first to demonstrate proteins (OsPINs). Exogenous auxin application rapidly that OsSAUR45 is involved in plant growth though induced OsSAUR45 expression and partially restored the affecting auxin synthesis and transport by repressing phenotype of rice lines overexpressing OsSAUR45. These OsYUCCA and OsPIN gene expression in rice. results demonstrate that OsSAUR45 is involved in plant Abstract Small auxin-up RNAs (SAURs) comprise a growth by affecting auxin synthesis and transport through large multigene family and are rapidly activated as part the repression of OsYUCCA and OsPIN gene expression in of the primary auxin response in plants. However, little is rice. known about the role of SAURs in plant growth and devel- opment, especially in monocots. Here, we report the biolog- Keywords SAUR · Auxin · Synthesis and transport · ical function of OsSAUR45 in the model
Plant Molecular Biology – Springer Journals
Published: Mar 20, 2017
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