Fig. 4

OsAK3 is involved in rice brassinosteroid signaling. a RT-qPCR analysis of OsAK3 expression under 10^–6 M BL treatment. Data are means ± SD (n = 3). b Coleoptile elongation analysis and root inhibition analysis of DJ and osak3 mutant in response to 0 M, 10^–8 M,10^–7 M and 10^–6 M BL. c Statistical data of coleoptile elongation analysis in DJ and osak3 mutant. The data was analyzed with the relative coleoptile length between BL treatment and mock. Data are means ± SD (n = 20). Statistical analyses were performed by student’s t test. ***P value < 0.001. d Statistical data of root inhibition analysis in DJ and osak3 mutant. The data was analyzed with the relative root length between BL treatment and mock. Data are means ± SD (n = 20). Statistical analyses were performed by student’s t test. ***P value < 0.001