Nitric Oxide Affects Rice Root Growth by Regulating Auxin Transport Under Nitrate Supply.

ABSTRACT: Nitrogen (N) is a major essential nutrient for plant growth, and rice is an important food crop globally. Although ammonium (NH₄⁺) is the main N source for rice, nitrate (NO₃^-) is also absorbed and utilized. Rice responds to NO₃^- supply by changing root morphology. However, the mechanisms of rice root growth and formation under NO₃^- supply are unclear. Nitric oxide (NO) and auxin are important regulators of root growth and development under NO₃^- supply. How the interactions between NO and auxin in regulating root growth in response to NO₃^- are unknown. In this study, the levels of indole-3-acetic acid (IAA) and NO in roots, and the responses of lateral roots (

SUBMITTER: Sun H 

PROVIDER: S-EPMC5974057 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature