Amino Acid Content of tha2 Seeds and Seedlings.
(A) THA2/tha2-1 and THA2/tha2-2 heterozygotes have slightly elevated levels of Thr and branched-chain amino acids in the seeds. Thr and Ile content in homozygous tha2-3/tha2-3 plants is not significantly different from the wild type.
(B) and (C) Most free amino acids are decreased in albino seeds (B) and seedlings (C) relative to wild-type or heterozygous seedlings.
Mean ± sd of five samples. *P < 0.01, Student's t test.