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tdy1 yellow sectors accumulate starch prior to chlorosis. A and B, Wild-type leaf. C and D, tdy1 leaf. Leaves were divided into thirds corresponding to the tip (oldest), middle, and base (youngest) regions. A and C, Photographs before staining. B and D, Photographs of cleared, IKI-stained leaves. Arrows point to faintly visible yellow sector in mutant leaf tip that accumulates excess starch. Arrowhead indicates region of tissue preferentially accumulating starch prior to chlorosis.
