Isolation of Intact Vacuoles from Petunia Petals and Extraction of Sequestered Glycosylated Phenylpropanoid Compounds
| Autor: | Alexander Vainstein, Rafael Knafo, Oded Skaliter, Gony Dvir, Jasmin Ravid, Alon Cna'ani |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Lysis Phenylpropanoid Chemistry Strategy and Management Mechanical Engineering fungi Metals and Alloys food and beverages Vacuole Protoplast Plant cell 01 natural sciences Industrial and Manufacturing Engineering 03 medical and health sciences 030104 developmental biology Biochemistry Organelle Methods Article Petal Centrifugation 010606 plant biology & botany |
| Zdroj: | Bio Protoc |
| Popis: | Plant vacuoles are the largest compartment in plant cells, occupying more than 80% of the cell volume. A variety of proteins, sugars, pigments and other metabolites are stored in these organelles ( Paris et al., 1996 ; Olbrich et al., 2007 ). Flowers produce a variety of specialized metabolites, some of which are unique to this organ, such as components of pollination syndromes, i.e., scent volatiles and flavonoids ( Hoballah et al., 2007; Cna'ani et al., 2015). To study the compounds stored in floral vacuoles, this compartment must be separated from the rest of the cell. To enable isolation of vacuoles, protoplasts were first generated by incubating pierced corollas with cellulase and macrozyme enzymes. After filtering and several centrifugation steps, protoplasts were separated from the debris and damaged/burst protoplasts, as revealed by microscopic observation. Concentrated protoplasts were lysed, and vacuoles were extracted by Ficoll-gradient centrifugation. Vacuoles were used for quantitative GC-MS analyses of sequestered metabolites. This method allowed us to identify vacuoles as the subcellular accumulation site of glycosylated volatile phenylpropanoids and to hypothesize that conjugated scent compounds are sequestered in the vacuoles en route to the headspace (Cna'ani et al., 2017). |
| Databáze: | OpenAIRE |
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