Conditional phenotype of Atnudt7-1 mutant plants in different potting mixes. A. Three-week-old WT Col-0 and Atnudt7-1 mutant plants grown in two different potting mixes under identical conditions. The 12:3:1 potting mix is a mix of 12 parts of vermiculite, 3 parts of Redi-earth and 1 part of sand. Metro-Mix 200 (MM) is the commercial potting mix. B. Average fresh weight of 4-week old plants grown in 12:3:1 mix and metro-mix potting soil (n = 48 plants for each condition).