Back to Search
Start Over
Large Cellular Inclusions Accumulate in Arabidopsis Roots Exposed to Low-Sulfur Conditions1[OPEN]
- Publication Year :
- 2015
- Publisher :
- American Society of Plant Biologists, 2015.
-
Abstract
- Sulfur is vital for primary and secondary metabolism in plant roots. To understand the molecular and morphogenetic changes associated with loss of this key macronutrient, we grew Arabidopsis (Arabidopsis thaliana) seedlings in low-sulfur conditions. These conditions induced a cascade of cellular events that converged to produce a profound intracellular phenotype defined by large cytoplasmic inclusions. The inclusions, termed low-sulfur Pox, show cell type- and developmental zone-specific localization. Transcriptome analysis suggested that low sulfur causes dysfunction of the glutathione/ascorbate cycle, which reduces flavonoids. Genetic and biochemical evidence indicated that low-sulfur Pox are the result of peroxidase-catalyzed oxidation of quercetin in roots grown under sulfur-depleted conditions.
- Subjects :
- inorganic chemicals
Inclusion Bodies
Microscopy, Confocal
Phenylpropionates
Arabidopsis Proteins
Sulfates
Gene Expression Profiling
Glucosinolates
Arabidopsis
Articles
Plants, Genetically Modified
Glutathione
Plant Roots
Luminescent Proteins
Seedlings
Mutation
Quercetin
Oxidation-Reduction
Sulfur
Peroxidase
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.pmid..........50e9503080ea770c4071d90642983836