VDE — Cucumis sativus
Summary
CSA_2G083740, designated VDE (also known as CsAVDE1, CsVDE, NPQ1), encodes a violaxanthin de-epoxidase on cucumber chromosome 2. The product contains a VDE domain and a lipocalin conserved site, and exhibits violaxanthin de-epoxidase activity, NAD(P)H dehydrogenase (quinone) activity, and protein binding. It localizes to the chloroplast thylakoid lumen and photosystem II. VDE is associated with the xanthophyll cycle, pigment and chlorophyll metabolism, electron transfer, fruit development, and response to heat. The gene is linked to photosynthetic rate, photochemical quenching, carotene content, and respiration rate. Phenotypic associations include photoprotection, cold and drought tolerance, non-photochemical quenching, zeaxanthin conversion, high light tolerance, and photosystem II repair. Studies of related genes in other species link the family to zeaxanthin biosynthesis, stomatal response to light, and photoinhibition sensitivity.
Annotations
- Chromosome
- 2
- Related genes
- VDE, NPQ1, LTO1
- GO terms
- homeostasis, pigment metabolism, GO:0010205, NAD(P)H Dehydrogenase (quinone) Activity, Fruit Development, Protein Domain Specific Binding, carotenoid anabolism, xanthophyll metabolism
- Publications
- 16913871, 20964339, 20100799, 19011000, 27446097, 27076397, 22771437, 25747136
- Traits
- drought tolerance, photoinhibition sensitivity, Extreme High Light Sensitivity, Leaf Bleaching Under Light Stress, Partially Restores NPQ Defects, Decreased Rosette Size, Altered Chlorophyll Fluorescence, Impaired Xanthophyll Cycle, Photoinhibition Sensitivity, Lacks Both Zeaxanthin and Tocopherols, Reduced Nonphotochemical Quenching, Absent Zeaxanthin Formation, Reduced Photosynthetic Efficiency, Stunted Growth in Fluctuating Light