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Genome-Wide Study of KNOX Regulatory Network Reveals Brassinosteroid Catabolic Genes Important for Shoot Meristem Function in Rice
- Tsuda, Katsutoshi, Kurata, Nori, Ohyanagi, Hajime, Hake, Sarah
- The plant cell 2014 v.26 no.9 pp. 3488-3500
- RNA interference, brassinosteroids, genes, genomics, inflorescences, loss-of-function mutation, metabolism, plant hormones, rice, shoot meristems, transcription factors
- Gain- and loss-of-function studies revealed that the rice KNOX transcription factor OSH1 negatively regulates the brassinosteroid (BR) phytohormone pathway. Genomics approaches identified BR catabolism genes as direct targets of OSH1 in the shoot meristems. RNAi knockdown studies suggested that BR catabolism is important for shoot meristem function and for regulation of panicle branch angle.