Characterization of Stem Nodes Associated with Carbon Partitioning in Maize in Response to Nitrogen Availability.

ABSTRACT: Stem node has been found to be a hub for controlling mineral nutrient distribution in gramineous plants. However, the characteristics of stem nodes associated with whole-plant carbon partitioning in maize (Zea mays L.) and their responses to nitrogen (N) availability remains elusive. Maize plants were grown in greenhouse under low to high N supply. Plant growth, sugar accumulation, and sugar transporters in nodes and leaves, as well as the anatomical structure of nodes, were investigated at vegetative phase. When compared to N-sufficient plants, low-N availability stunted growth and resulted in 49-64% less sugars in leaves, which was attributed to low photosynthesis or the accelerated carbon export, as evidenced by more ¹³C detected further below leaf tips. Invariably hig

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC9024680 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature