Table 2.

Estimates of broad (H²) and narrow-sense heritability (h²) of richness in the root and leaf microbiome of A. thaliana.

Organ	Microbiome trait	H 2	h 2
root	bacterial richness	0.57	0.21
root	fungal richness	0.47	0.52
root	combined bacteria and fungi	0.29	0.40
leaf	bacterial richness	0.76	0.15
leaf	fungal richness	0.51	0.25
leaf	combined bacteria and fungi	0.31	0.19

Both broad and narrow-sense estimates were calculated from a GLMM that corrected for sequencing effort and other technical artifacts. SNPs (minor allele frequency, or MAF ≥ 0.05) from the 1001 Genomes Project⁴⁴ were used to estimate narrow-sense heritability.