VTE1 — Arabidopsis thaliana
Summary
AT4G32770 (VTE1, also known as SUCROSE EXPORT DEFECTIVE 1) in Arabidopsis thaliana encodes a tocopherol cyclase with isomerase activity. This chloroplast-localized enzyme is associated with vitamin E metabolism and tocochromanol biosynthesis. VTE1 is associated with drought tolerance, oxidative stress tolerance, and photooxidative stress tolerance, as well as with seed longevity, seed dormancy, and seed desiccation tolerance. The gene has been connected to chlorophyll content, carotenoid content, anthocyanin content, and quantum yield, and to phloem sucrose loading and xanthophyll cycle processes. VTE1 is linked to plastoglobule formation, vascular development, and responses to salt stress, metal stress, and Botrytis cinerea. Studies of related genes in other species connect the tocopherol cyclase family to plant height and starch mobilization.
Annotations
- Chromosome
- 4
- Related genes
- VTE1
- GO terms
- homeostasis, vitamin A anabolism, Chlorophyll Fluorescence, NO storage, zeaxanthin anabolism, vitamin A metabolism, vitamin E metabolism, carotenoid anabolism
- Publications
- 18810749, 23299430, 17619201, 37026385, 16290217, 29194404, 41024265, 18452591
- Traits
- Lacks Both Zeaxanthin and Tocopherols, Tocopherol-deficient, DMPBQ Accumulation, Tocopherol-deficient, ER Fatty Acid Desaturation Deficiency, Suppressed Stress Response, Complete Absence of All Tocopherol Forms, No Lipid Peroxidation Under High Light at Low Temperature, Extreme High Light Sensitivity, Leaf Bleaching Under Light Stress, Tocopherol-deficient, Increased Anthocyanin, Reduced Growth Under Low Temperature, tocopherol biosynthesis