Fig. 1.

Translocation of B into shoots in response to B conditions. Col-0 (WT) and bor1-1 mutant plants were grown with media containing ¹¹B-enriched B. The plants were treated with high-B (+B) or low-B (-B) media for 6 days, and a part of the plants with low-B media was resupplied with high-B media for 1, 3, and 6 h (re1h, re3h, re6h). Then, the plants were exposed to media containing 30 μM ¹⁰B-enriched B for 60 min, and ¹⁰B concentrations in shoots were determined. FW, fresh weight. Averages and standard deviations are shown (n = 3). Asterisks indicate significant difference from the WT plants at +B condition (P < 0.05, Student's t test).