Transcriptomic and physiological analyses of rice seedlings under different nitrogen supplies provide insight into the regulation involved in axillary bud outgrowth

摘要

The growth of axillary bud responses to different N concentrations. The length of the first ( ) and second ( ) axillary bud length under different N concentration for 18 to 33 days after germination (DAG). Data are means ± SD (  = 30). Phenotypes of axillary bud growth under different N concentration for 30 days after germination. Scale bar, 1 mm. The axillary buds and basal parts for 30 DAG were used for transcriptional analysis. The 0.5 to 15.0 mM N concentrations were provided by 0.25–7.50 mM NH NO as the nitrogen source, respectively. The parts between the white dashed lines represent the basal parts that cut for RNA-seq. The white arrowhead represents the first axillary; the red arrowhead represents the secondary axillary. Bp stands for basal part. Ab stands for axillary bud