Extended Data Fig. 10: Nuclear heat-responsive expression of the chloroplast gene psbA stimulates branching and increases biomass in Arabidopsis and tobacco.

a,c, Number of rosette-leaf branches per mature plant of wild-type and transgenic lines of Arabidopsis (A1 and A3, n=8) and tobacco (T6, T13 and T58, n=10) harboring the pHsfA2::RbcSPTP-psbA cDNA construct. b,d, Comparative analysis of aboveground biomass per plant between wild-type and the transgenic lines of Arabidopsis (A1 and A3, n=8) and tobacco (T6, T13 and T58, n=5). Individual values (black-coded dots) and means are shown. Statistical analyses were performed (*P value < 0.05, **P value < 0.01, ***P value < 0.001, two-sided Student’s t test). Error bars indicate SD.