Rice nitrate transporter OsNPF7.2 positively regulates tiller number and grain yield.

ABSTRACT:

Background

Rice tiller number is one of the most important factors that determine grain yield, while nitrogen is essential for the crop growth and development, especially for tiller formation. Genes involved in nitrogen use efficiency processes have been identified in the previous studies, however, only a small number of these genes have been found to improve grain yield by promoting tillering.

Results

We constructed over-expression (OX) lines and RNA-interference (Ri) lines, and selected a mutant of OsNPF7.2, a low-affinity nitrate transporter. Our analyses showed that rice tiller number and grain yield were significantly increased in OX lines, whereas Ri lines and mutant osnpf7.2 had fewer tiller number and lower grain yield. Under different nitrate concentrations, tiller

SUBMITTER: Wang J 

PROVIDER: S-EPMC5826914 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature