Maize w3 disrupts homogentisate solanesyl transferase (ZmHst) and reveals a plastoquinone‐9 independent path for phytoene desaturation and tocopherol accumulation in kernels

• Published in: The Plant journal : for cell and molecular biology Vol. 93; no. 5; pp. 799 - 813
• Main Authors: Hunter, Charles T., Saunders, Jonathan W., Magallanes‐Lundback, Maria, Christensen, Shawn A., Willett, Denis, Stinard, Philip S., Li, Qin‐Bao, Lee, Kwanghee, DellaPenna, Dean, Koch, Karen E.
• Format: Journal Article
• Language: English
• Published: England Blackwell Publishing Ltd 01.03.2018
• Subjects: Abscisic acid; Accumulation; albino; Biosynthesis; Carotenoids; color; Corn; Desaturase; Desaturation; Electron transfer; Embryos; Endosperm; genes; Grain; homogentisate solanesyl transferase; homozygosity; Kernels; leaves; mutants; mutation; nutrient deficiencies; oxidants; Oxidative stress; Oxidizing agents; Phenotypes; Photosynthesis; phytoene; phytoene desaturase; Plant tissues; plastoquinone; seed maturation; Seedlings; tissues; tocochromanols; Tocopherol; Tocopherols; tocotrienols; transferases; Vitamin E; white seedling 3; Zea mays; Zea mays; homogentisate solanesyl transferase; carotenoids; plastoquinone; tocochromanols; phytoene desaturase; abscisic acid; phytoene; white seedling 3

Summary Maize white seedling 3 (w3) has been used to study carotenoid deficiency for almost 100 years, although the molecular basis of the mutation has remained unknown. Here we show that the w3 phenotype is caused by disruption of the maize gene for homogentisate solanesyl transferase (HST), which...