ArticleThe Plant cell2013
Ca2+-dependent protein kinase11 and 24 modulate the activity of the inward rectifying K+ channels in Arabidopsis pollen tubes.
Article in The Plant cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.
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Who cites it
63 citing papers in PubMed, 131 citations in OpenAlex.
- Calcium-Dependent Protein Kinases in Plants: Structure, Signaling, and Multifaceted Regulatory Roles in Development and Stress Adaptation.International journal of molecular sciences · 2026Review
- OsCML17 a pollen-expressed calmodulin-like protein regulates pollen germination and tube growth in rice (Oryza sativa).Plant cell reports · 2026Article
- OPEN STOMATA 1 activates SLAC1 anion channel primarily through CPK15 in ABA-induced stomatal closure inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Loss of calcium-dependent protein kinases OsCPK5 and OsCPK13 leads to NLR-dependent resistance in rice.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Genome-Wide Investigation ofInternational journal of molecular sciences · 2025Article
- ACT2.6: Global Gene Coexpression Network inGenes · 2025Article
- Article
- Calcium-dependent protein kinases in plant immunity: from calcium signaling to network integration.Frontiers in plant science · 2025Review
- The Role of Female and Male Genes in Regulating Pollen Tube Guidance in Flowering Plants.Genes · 2024Review
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- From gametes to zygote: Mechanistic advances and emerging possibilities in plant reproduction.Plant physiology · 2024Review
- Calmodulin-Domain Protein Kinase PiCDPK1 Interacts with the 14-3-3-like Protein NtGF14 to Modulate Pollen Tube Growth.Plants (Basel, Switzerland) · 2024Article
- The Molecular Mechanism of Potassium Absorption, Transport, and Utilization in Rice.International journal of molecular sciences · 2023Review
- The miR166d/International journal of molecular sciences · 2023Article
- Structural basis for the activity regulation of a potassium channel AKT1 from Arabidopsis.Nature communications · 2022Article
- Calmodulin Domain Protein Kinase PiCDPK1 Regulates Pollen Tube Growth Polarity through Interaction with RhoGDI.Plants (Basel, Switzerland) · 2022Article
- Two calcium-dependent protein kinases enhance maize drought tolerance by activating anion channel ZmSLAC1 in guard cells.Plant biotechnology journal · 2022Article
- The role of CDPKs in plant development, nutrient and stress signaling.Frontiers in genetics · 2022Review
- Molecular Characterization Reveals the Involvement of Calcium Dependent Protein Kinases in Abiotic Stress Signaling and Development in Chickpea (Frontiers in plant science · 2022Article
- A Decade of Pollen Phosphoproteomics.International journal of molecular sciences · 2021Review
3 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Potassium (K(+)) influx into pollen tubes via K(+) transporters is essential for pollen tube growth; however, the mechanism by which K(+) transporters are regulated in pollen tubes remains unknown. Here, we report that Arabidopsis thaliana Ca(2+)-dependent protein kinase11 (CPK11) and CPK24 are involved in Ca(2+)-dependent regulation of the inward K(+) (K(+)in) channels in pollen tubes. Using patch-clamp analysis, we demonstrated that K(+)in currents of pollen tube protoplasts were inhibited by elevated [Ca(2+)]cyt. However, disruption of CPK11 or CPK24 completely impaired the Ca(2+)-dependent inhibition of K(+)in currents and enhanced pollen tube growth. Moreover, the cpk11 cpk24 double mutant exhibited similar phenotypes as the corresponding single mutants, suggesting that these two CDPKs function in the same signaling pathway. Bimolecular fluorescence complementation and coimmunoprecipitation experiments showed that CPK11 could interact with CPK24 in vivo. Furthermore, CPK11 phosphorylated the N terminus of CPK24 in vitro, suggesting that these two CDPKs work together as part of a kinase cascade. Electrophysiological assays demonstrated that the Shaker pollen K(+)in channel is the main contributor to pollen tube K(+)in currents and acts as the downstream target of the CPK11-CPK24 pathway. We conclude that CPK11 and CPK24 together mediate the Ca(2+)-dependent inhibition of K(+)in channels and participate in the regulation of pollen tube growth in Arabidopsis.
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