Ontology highlight
ABSTRACT:
SUBMITTER: Little DY
PROVIDER: S-EPMC1224627 | biostudies-literature | 2005 Sep
REPOSITORIES: biostudies-literature
Little Daniel Y DY Rao Hongyu H Oliva Sabrina S Daniel-Vedele Françoise F Krapp Anne A Malamy Jocelyn E JE
Proceedings of the National Academy of Sciences of the United States of America 20050912 38
Lateral root initiation is strongly repressed in Arabidopsis by the combination of high external sucrose and low external nitrate. A previously isolated mutant, lin1, can overcome this repression. Here, we show that lin1 carries a missense mutation in the NRT2.1 gene. Several allelic mutants, including one in which the NRT2.1 gene is completely deleted, show similar phenotypes to lin1 and fail to complement lin1. NRT2.1 encodes a putative high-affinity nitrate transporter that functions at low e ...[more]