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ARS Home » Southeast Area » Gainesville, Florida » Center for Medical, Agricultural and Veterinary Entomology » Chemistry Research » Research » Publications at this Location » Publication #333449

Research Project: Disease Defense Responses Signaling in Maize

Location: Chemistry Research

Title: Homogentisate solanesyl transferase (HST) cDNA’s in maize

Author
item Li, Qin-bao
item Hunter, Charles

Submitted to: Genbank
Publication Type: Other
Publication Acceptance Date: 9/9/2016
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Maize white seedling 3 (w3) has served as a model albino-seedling mutant since its discovery in 1923. We show that the w3 phenotype is caused by disruptions in homogentisate solanesyl transferase (HST), an enzyme that catalyzes the committed step in plastoquinone-9 (PQ9) biosynthesis. This reaction lies at the heart of a complex metabolic network of plastidial antioxidants, pigments, and phytohormones. Disruption of PQ9 biosynthesis has broad-ranging implications, from nutritional quality of grains to plant defense. These cDNAs were sequenced as normal variants of HST in various maize lines and further our research towards understanding plant responses to environmental and biotic stresses.