ArticlePlant physiology2009
De novo synthesis and degradation of Lx and V cycle pigments during shade and sun acclimation in avocado leaves.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 45 citations in OpenAlex.
- Transcriptome analysis reveals key regulatory networks and genes involved in the acquisition of cold stress memory in pepper seedlings.BMC plant biology · 2024Article
- The Responses of Light Reaction of Photosynthesis to Dynamic Sunflecks in a Typically Shade-Tolerant SpeciesFrontiers in plant science · 2021Article
- Photosynthetic and Photoprotective Responses to Steady-State and Fluctuating Light in the Shade-Demanding CropFrontiers in plant science · 2021Article
- Drought stress memory in the photosynthetic mechanisms of an invasive CAM species, Aptenia cordifolia.Photosynthesis research · 2017Article
- Grapevine Plasticity in Response to an Altered Microclimate: Sauvignon Blanc Modulates Specific Metabolites in Response to Increased Berry Exposure.Plant physiology · 2016Article
- Decreased photochemical efficiency of photosystem II following sunlight exposure of shade-grown leaves of avocado: because of, or in spite of, two kinetically distinct xanthophyll cycles?Plant physiology · 2013Article
- Effects of altered α- and β-branch carotenoid biosynthesis on photoprotection and whole-plant acclimation of Arabidopsis to photo-oxidative stress.Plant, cell & environment · 2013Article
- From ecophysiology to phenomics: some implications of photoprotection and shade-sun acclimation in situ for dynamics of thylakoids in vitro.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2012Review
- Thermal energy dissipation and xanthophyll cycles beyond the Arabidopsis model.Photosynthesis research · 2012Review
- Lutein from deepoxidation of lutein epoxide replaces zeaxanthin to sustain an enhanced capacity for nonphotochemical chlorophyll fluorescence quenching in avocado shade leaves in the dark.Plant physiology · 2011Article
- Continuous turnover of carotenes and chlorophyll a in mature leaves of Arabidopsis revealed by 14CO2 pulse-chase labeling.Plant physiology · 2010Article
- Photosystem II and pigment dynamics among ecotypes of the green alga Ostreococcus.Plant physiology · 2009Article
- Water deficit alters differentially metabolic pathways affecting important flavor and quality traits in grape berries of Cabernet Sauvignon and Chardonnay.BMC genomics · 2009Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The photoprotective role of the universal violaxanthin cycle that interconverts violaxanthin (V), antheraxanthin (A), and zeaxanthin (Z) is well established, but functions of the analogous conversions of lutein-5,6-epoxide (Lx) and lutein (L) in the selectively occurring Lx cycle are still unclear. We investigated carotenoid pools in Lx-rich leaves of avocado (Persea americana) during sun or shade acclimation at different developmental stages. During sun exposure of mature shade leaves, an unusual decrease in L preceded the deepoxidation of Lx to L and of V to A+Z. In addition to deepoxidation, de novo synthesis increased the L and A+Z pools. Epoxidation of L was exceptionally slow, requiring about 40 d in the shade to restore the Lx pool, and residual A+Z usually persisted overnight. In young shade leaves, the Lx cycle was reversed initially, with Lx accumulating in the sun and declining in the shade. De novo synthesis of xanthophylls did not affect alpha- and beta-carotene pools on the first day, but during long-term acclimation alpha-carotene pools changed noticeably. Nonetheless, the total change in alpha- and beta-branch carotenoid pools was equal. We discuss the implications for regulation of metabolic flux through the alpha- and beta-branches of carotenoid biosynthesis and potential roles for L in photoprotection and Lx in energy transfer to photosystem II and explore physiological roles of both xanthophyll cycles as determinants of photosystem II efficiency.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.