Chlorotic streak Two leaves of original ChlStk*-N2619/+ heterozygous mutant plant showing chlorotic streaks especially at the tip of older leaves. Very little evidence of necrosis.

Chlorotic streak 5th leaf of heterozygous ChlStk*-N2619/+ mutant plant from a sib cross of heterozygous mutant plants showing intense anthocyanin accumulation in chlorotic tissue with appropriate anthocyanin genes.

Chlorotic streak ChlStk*-N2619 mutant plants showing extreme expression in homozygote (bottom) compared to heterozygote (top).

Chlorotic streak Leaf of a small homozygous ChlStk*-N2619 mutant plant from the cross of heterozygous sib, showing extreme yellow stripe chlorosis but no necrosis. No anthocyanin expression because the needed anthocyanin genes are absent.