Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Evidence for sanctions: more beneficial symbionts form more progeny in single strain and co-infected nodules. More beneficial Mesorhizobium strains form more CFUs in (a) single-strain nodules and a higher proportion of CFUs in (b) mixed nodules. Filled circles, genotype mean values for each Mesorhizobium strain. Black line, linear regression. Grey shading, 95% confidence interval. (Online version in colour.)
