Isolation of Arabidopsis cDNAs by Complementation in Yeast Includes: Isolation of Arabidopsis LEU2 cDNAs by complementation of the yeast leu2 mutation; Recovery of plasmid DNA from yeast cells; Analysis of Arabidopsis cDNAs that complement a yeast leu2 mutation; Preparation of library DNA from the Lacroute cDNA library; Preparation of Yeast Media.