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.
Phylogenetic analysis of SPS (A), SUS (B), acid INV proteins (C) and alkaline/neutral INV proteins (D). Trees were built using amino acid sequences from Arabidopsis thaliana, tomato (Solanum lycopersicum) and rice (Oryza sativa). The phylogenetic tree was constructed using the maximum likelihood method with MEGA-X.
