Ciencias Agrarias >
Instituto de Investigaciones Agrobiológicas de Galicia (IIAG) >
(IIAG) Artículos >
Open Access item Two SCARECROW-LIKE genes are induced in response to exogenous
auxin in rooting-competent cuttings of distantly related forest species.
Mier, B. de
|Keywords:||vegetative propagation, pine, chestnut,, root meristem|
|Citation:||Tree Physiology 27, 1459–1470 (2007)|
|Abstract:||This paper reports for the first time the identification of SCARECROW-LIKE genes from two distantly-related forest species, Pinus radiata and Castanea sativa, which are auxin-induced in rooting-competent cuttings before the activation of cell division that gives rise to adventitious root formation. The predicted protein sequences contain domains characteristic of the GRAS protein family, and show a strong similarity to the SCARECROW-LIKE proteins, which indicates conserved functions of these proteins. Quantitative RT-PCR analysis shows that these genes are expressed at relatively high levels in roots. In addition, an induction of the mRNA levels in rooting-competent cuttings from P. radiata and C. sativa in response to exogenous auxin is observed within the first 24 h of the root induction process, a time when cell reorganization takes place, prior to the resumption of cell division and to the appearance of adventitious root primordia. These results suggest that SCARECROW-LIKE genes may play a role at very early stages of adventitious root formation.|
|Publisher version (URL):||http://dx.doi.org/10.1093/treephys/27.10.1459|
|E-ISSNmetadata.dc.identifier.doi = DOI:||1758-4469|
|Appears in Collections:||(IIAG) Artículos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.