Abby J. Cuttriss

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Carotenoids are essential photoprotective and antioxidant pigments synthesized by all photosynthetic organisms. Most carotenoid biosynthetic enzymes were thought to have evolved independently in bacteria and plants. For example, in bacteria, a single enzyme (CrtI) catalyzes the four desaturations leading from the colorless compound phytoene to the red(More)
Vitamin A deficiency, a global health burden, can be alleviated through provitamin A carotenoid biofortification of major crop staples such as maize (Zea mays) and other grasses in the Poaceae. If regulation of carotenoid biosynthesis was better understood, enhancement could be controlled by limiting beta-carotene hydroxylation to compounds with lower or no(More)
Carotenoid pigments are critical for plant survival, and carotenoid composition is tuned to the developmental stage, tissue, and to environmental stimuli. We report the cloning of the CAROTENOID CHLOROPLAST REGULATORY1 (CCR1) gene. The ccr1 mutant has increased shoot branching and altered carotenoid composition, namely, reduced lutein in leaves and(More)
Vitamin A deficiency is a serious global health problem that can be alleviated by improved nutrition. Development of cereal crops with increased provitamin A carotenoids can provide a sustainable solution to eliminating vitamin A deficiency worldwide. Maize is a model for cereals and a major staple carbohydrate source. Here, we discuss maize carotenogenesis(More)
Plant-specific PIN-formed (PIN) efflux transporters for the plant hormone auxin are required for tissue-specific directional auxin transport and cellular auxin homeostasis. The Arabidopsis PIN protein family has been shown to play important roles in developmental processes such as embryogenesis, organogenesis, vascular tissue differentiation, root meristem(More)
Plants have a range of mechanisms to protect against oxidative damage induced by excess light and environmental stress. One of these processes consists of the detoxification of reactive oxygen species by the ascorbate peroxidase (APX) family of enzymes, which convert H2O2 into H2O. Two of the genes encoding APX in Arabidopsis are induced by high light,(More)
Cellular auxin homeostasis controls many aspects of plant growth, organogenesis and development. The existence of intracellular auxin transport mediated by endoplasmic reticulum (ER)-localized PIN5, PIN6 and PIN8 proteins is a relatively recent discovery shaping a new era in understanding auxin-mediated growth processes. Here we summarize the importance of(More)
The chloroplast is the largest and arguably the most complex of the three energy organelles in the plant cell. The biogenesis of the chloroplast requires a combination of thousands of proteins encoded by the chloroplastic and nuclear genomes. Chloroplast function is also subject to modifications to enable responses to changes in environmental and(More)
Christopher I. Cazzonelli,a,1 Abby J. Cuttriss,a,1 Susan B. Cossetto,a William Pye,a Peter Crisp,a JimWhelan,b E. Jean Finnegan,c Colin Turnbull,d and Barry J. Pogsona,2 a Australian Research Council Centre of Excellence in Plant Energy Biology, School of Biochemistry and Molecular Biology, Australian National University, Canberra, ACT 0200, Australia b(More)
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