The Differential Effects of ARR1 and ARR12 on Shoot Regeneration Are Determined by Distinct Protein Functions and Expression Patterns.
(A) to (F) Shoot regeneration from root explants incubated for 14 d on SIM, including root explants of arr1 arr12
(A), arr12
(B), ARR12pro:ARR1 arr12 (ARR1 expressed under the control of the ARR1 and ARR12 promoters; [C]), Col-0 (D), arr1
(E), and ARR1pro:ARR12 arr1 (ARR12 expressed under the control of ARR1 and ARR12 promoters) plants (F).
(G) to (J) Shoot regeneration from root explants incubated for 14 d on SIM, including root explants from Col-0 (G), 35Spro:ARR12 transgenic (lines no. 1 and no. 2; [H] and [I]), and 35Spro:ARR1 transgenic plants (J).
(K) and (L) Number of regenerated shoots after 14 d of culture. Data represent mean ± sd (n = 24). ***Differ at P < 0.001 (Student’s t-test). Scale bars = 0.5 cm. Two independent transgenic lines were analyzed for each genetic background, which exhibited similar phenotypes ([C], [F], [H], and [I]).