ZmNRT1.1B (ZmNPF6.6) determines nitrogen use efficiency via regulation of nitrate transport and signalling in maize.

ABSTRACT: Nitrate (NO₃ ^- ) is crucial for optimal plant growth and development and often limits crop productivity under low availability. In comparison with model plant Arabidopsis, the molecular mechanisms underlying NO₃ ^- acquisition and utilization remain largely unclear in maize. In particular, only a few genes have been exploited to improve nitrogen use efficiency (NUE). Here, we demonstrated that NO₃ ^- -inducible ZmNRT1.1B (ZmNPF6.6) positively regulated NO₃ ^- -dependent growth and NUE in maize. We showed that the tandem duplicated proteoform ZmNRT1.1C is irrelevant to maize seedling growth under NO₃ ^- supply; however, the loss of function of ZmNRT1.1B significantly weakened plant grow

SUBMITTER: Cao H 

PROVIDER: S-EPMC10826987 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature