Table I. Rosette fresh biomass and chlorophyll fluorescence of 8-week-old wild-type and nramp3nramp4 plants grown on perlite in the presence (control; 5 μm Mn) or absence of Mn (−Mn)

Results shown correspond to means ± se with n number of plants weighted and n′ number of Fv/Fm measurements on different leaves. Results from one representative experiment out of five are shown. Asterisks denote significant differences based on Mann-Whitney U test: ** P < 0.01, * P < 0.05.

SampleFresh Biomass (n)Fv/Fm (n′)
Control medium
    Wild type537 ± 69 (11)0.798 ± 0.003 (10)
    nramp3nramp4582 ± 92 (6)0.796 ± 0.004 (12)
−Mn medium
    Wild type279 ± 36 (15)0.655 ± 0.013 (11)
    nramp3nramp482 ± 24** (10)0.572 ± 0.017* (9)