ArticleThe Plant cell2011
Pollen tubes lacking a pair of K+ transporters fail to target ovules in Arabidopsis.
Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.
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Who cites it
78 citing papers in PubMed, 166 citations in OpenAlex.
- Molecular understanding of plant pollination, fertilization, seed development and protoplast regeneration.Science China. Life sciences · 2026Review
- ABA-Induced Transcriptomic Dynamics inPlants (Basel, Switzerland) · 2026Article
- Intermediate evolutionary state of motile sperm and pollen tubes in the extant gymnospermProceedings of the National Academy of Sciences of the United States of America · 2026Article
- N-terminal phosphorylation inhibits Arabidopsis katanin and affects vegetative and reproductive development in opposite ways.bioRxiv : the preprint server for biology · 2026Article
- Three-dimensional visualization of tip-vesicles in growing pollen tubes by electron tomography.Science China. Life sciences · 2026Article
- Identification and Expression Analysis of theBiology · 2025Article
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- The TRAPPC8/TRS85 subunit of the Arabidopsis TRAPPIII tethering complex regulates endoplasmic reticulum function and autophagy.Plant physiology · 2025Article
- Peptides in plant reproduction-small yet powerful.Frontiers in plant science · 2025Review
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- Na + -driven pH regulation by Na+/H+ antiporters promotes photosynthetic efficiency in cyanobacteria.Plant physiology · 2024Article
- The Role of Female and Male Genes in Regulating Pollen Tube Guidance in Flowering Plants.Genes · 2024Review
- High-quality genome of a modern soybean cultivar and resequencing of 547 accessions provide insights into the role of structural variation.Nature genetics · 2024Article
- Molecular Insights into Red Palm Weevil Resistance Mechanisms of Coconut (Plants (Basel, Switzerland) · 2024Article
- From gametes to zygote: Mechanistic advances and emerging possibilities in plant reproduction.Plant physiology · 2024Review
- The Molecular Mechanism of Potassium Absorption, Transport, and Utilization in Rice.International journal of molecular sciences · 2023Review
- Metal-based-oxide nanoparticles assisted theRSC advances · 2023Article
- Pollen tube emergence is mediated by ovary-expressed ALCATRAZ in cucumber.Nature communications · 2023Article
- Article
18 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Flowering plant reproduction requires precise delivery of the sperm cells to the ovule by a pollen tube. Guidance signals from female cells are being identified; however, how pollen responds to those cues is largely unknown. Here, we show that two predicted cation/proton exchangers (CHX) in Arabidopsis thaliana, CHX21 and CHX23, are essential for pollen tube guidance. Male fertility was unchanged in single chx21 or chx23 mutants. However, fertility was impaired in chx21 chx23 double mutant pollen. Wild-type pistils pollinated with a limited number of single and double mutant pollen producing 62% fewer seeds than those pollinated with chx23 single mutant pollen, indicating that chx21 chx23 pollen is severely compromised. Double mutant pollen grains germinated and grew tubes down the transmitting tract, but the tubes failed to turn toward ovules. Furthermore, chx21 chx23 pollen tubes failed to enter the micropyle of excised ovules. Green fluorescent protein-tagged CHX23 driven by its native promoter was localized to the endoplasmic reticulum of pollen tubes. CHX23 mediated K(+) transport, as CHX23 expression in Escherichia coli increased K(+) uptake and growth in a pH-dependent manner. We propose that by modifying localized cation balance and pH, these transporters could affect steps in signal reception and/or transduction that are critical to shifting the axis of polarity and directing pollen growth toward the ovule.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.