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Plasma Membrane-Localized Calcium Pumps and Copines Coordinately Regulate Pollen Germination and Fertility in Arabidopsis.
- Source :
-
International Journal of Molecular Sciences . Jun2018, Vol. 19 Issue 6, p1774. 1p. 1 Diagram, 1 Graph. - Publication Year :
- 2018
-
Abstract
- Calcium plays an important role in plant growth, development, and response to environmental stimuli. Copines are conserved plasma membrane-localized calcium-binding proteins which regulate plant immune responses and development. In this study, we found that copine proteins BON2 and BON3, the paralogs of BON1, physically interact with calcium pumps ACA8 and ACA10 in Arabidopsis. Notably, ACA9, the closest homologue of ACA8 and ACA10 functioning in pollen tube growth, interacts with all three copines. This is consistent with the protein–protein interactions between the two protein families, the <italic>aca8</italic>, <italic>aca10</italic>, <italic>aca8/aca10</italic>, <italic>bon1/2/3</italic> mutants as well as <italic>aca9</italic> mutant exhibited defects on pollen germination and seed production. Taken together, plasma membrane-localized interacting calcium pumps and copines coordinately control pollen tube growth, likely through manipulating calcium efflux. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CALCIUM
*PLANT growth
*CELL membranes
*CALCIUM-binding proteins
*POLLEN tube
Subjects
Details
- Language :
- English
- ISSN :
- 16616596
- Volume :
- 19
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- International Journal of Molecular Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 130618221
- Full Text :
- https://doi.org/10.3390/ijms19061774