Expression Patterns of Genes Encoding Sugar and Potassium Transport Proteins Are Simultaneously Upregulated or Downregulated When Carbon and Potassium Availability Is Modified in Shiraz (Vitis vinifera L.) Berries
| Autor: | Celia Barril, Siyang Liao, Suzy Y. Rogiers, Zelmari A. Coetzee, Simon J. Clarke, Alain Deloire, Rob R. Walker, Stephen D. Tyerman |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology Potassium Down-Regulation chemistry.chemical_element Plant Science Berry Vacuole 01 natural sciences 03 medical and health sciences Gene Expression Regulation Plant Gene expression Phloem transport Vitis Sugar Plant Proteins fungi food and beverages Biological Transport Ripening Cell Biology General Medicine Carbon Up-Regulation Transport protein Plant Leaves 030104 developmental biology chemistry Biochemistry Fruit Carrier Proteins Sugars 010606 plant biology & botany |
| Zdroj: | Plant and Cell Physiology. 60:2331-2342 |
| ISSN: | 1471-9053 0032-0781 |
| Popis: | A link between the accumulation of sugar and potassium has previously been described for ripening grape berries. The functional basis of this link has, as of yet, not been elucidated but could potentially be associated with the integral role that potassium has in phloem transport. An experiment was conducted on Shiraz grapevines in a controlled environment. The accumulation of berry sugar was curtailed by reducing the leaf photoassimilation rate, and the availability of potassium was increased through soil fertilization. The study characterizes the relationship between the accumulation of sugar and potassium into the grape berry and describes how their accumulation patterns are related to the expression patterns of their transporter proteins. A strong connection was observed between the accumulation of sugar and potassium in the grape berry pericarp, irrespective of the treatment. The relative expression of proteins associated with sugar and potassium transport across the tonoplast and plasma membrane was closely correlated, suggesting transcriptional coregulation leading to the simultaneous translocation and storage of potassium and sugar in the grape berry cell. |
| Databáze: | OpenAIRE |
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