Fig. 3

Analysis of beta diversity and differential abundance between the rhizosphere and bulk soil samples. PcoA plot of Bray-Curtis index between rhizosphere soil (N = 8) and bulk soil (N = 8) non-supplemented samples in A) and iron supplemented samples in B). Samples irrigated with water or with 0.5 mM FeSO4 solution are represented with a black border, while samples without water or irrigated with 0.1 mM FeSO4 solution are without a black border