Cross-species identification of Mendel's I locus |
| |
Authors: | Armstead Ian Donnison Iain Aubry Sylvain Harper John Hörtensteiner Stefan James Caron Mani Jan Moffet Matt Ougham Helen Roberts Luned Thomas Ann Weeden Norman Thomas Howard King Ian |
| |
Institution: | Institute of Grassland and Environmental Research, Aberystwyth SY23 3EB, UK. ian.armstead@bbsrc.ac.uk |
| |
Abstract: | A key gene involved in plant senescence, mutations of which partially disable chlorophyll catabolism and confer stay-green leaf and cotyledon phenotypes, has been identified in Pisum sativum, Arabidopsis thaliana, and Festuca pratensis by using classical and molecular genetics and comparative genomics. A stay-green locus in F. pratensis is syntenically equivalent to a similar stay-green locus on rice chromosome 9. Functional testing in Arabidopsis of a homolog of the rice candidate gene revealed (i) senescence-associated gene expression and (ii) a stay-green phenotype after RNA interference silencing. Genetic mapping in pea demonstrated cosegregation with the yellow/green cotyledon polymorphism (I/i) first reported by Gregor Mendel in 1866. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|