ArticleThe New phytologist2021
Studies of moss reproductive development indicate that auxin biosynthesis in apical stem cells may constitute an ancestral function for focal growth control.
Article in The New phytologist, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 47 citations in OpenAlex.
- Morphogenesis of moss leaf-like organs through variations in deeply shared developmental principles.Science advances · 2026Article
- Dynamic auxin maxima regulate male-to-hermaphrodite conversion and de novo meristem formation in the fern Ceratopteris gametophytes.PLoS biology · 2026Article
- The role of auxin-mediated gene activation in the bryophyte, Physcomitrium patens.Journal of experimental botany · 2025Article
- Diversification of CLE expression patterns and nonmeristematic roles for CLAVATA receptor-like kinases in a moss.The New phytologist · 2025Article
- Sexual reproduction in land plants: an evolutionary perspective.Plant reproduction · 2025Review
- The transcription factor PpRKD evokes female developmental fate in the sexual reproductive organs of Physcomitrium patens.The New phytologist · 2025Article
- Analysis of auxin responses in the fern Ceratopteris richardii identifies the developmental phase as a major determinant for response properties.Development (Cambridge, England) · 2024Article
- The maternal embrace: the protection of plant embryos.Journal of experimental botany · 2024Review
- Clade-D auxin response factors regulate auxin signaling and development in the moss Physcomitrium patens.PLoS biology · 2023Article
- MS1/MMD1 homologues in the moss Physcomitrium patens are required for male and female gametogenesis.The New phytologist · 2022Article
- Dependence on clade II bHLH transcription factors for nursing of haploid products by tapetal-like cells is conserved between moss sporangia and angiosperm anthers.The New phytologist · 2022Article
- Imaging the living plant cell: From probes to quantification.The Plant cell · 2022Review
- Auxin Does the SAMba: Auxin Signaling in the Shoot Apical Meristem.Cold Spring Harbor perspectives in biology · 2021Review
- Regulation of gametangia and gametangiophore initiation in the liverwort Marchantia polymorpha.Plant reproduction · 2021Review
- Fluorescent biosensors illuminating plant hormone research.Plant physiology · 2021Review
- Article
- Auxin Biology in Bryophyta: A Simple Platform with Versatile Functions.Cold Spring Harbor perspectives in biology · 2021Review
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5 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The plant hormone auxin is a key factor for regulation of plant development, and this function was probably reinforced during the evolution of early land plants. We have extended the available toolbox to allow detailed studies of how auxin biosynthesis and responses are regulated in moss reproductive organs, their stem cells and gametes to better elucidate the function of auxin in the morphogenesis of early land plants. We measured auxin metabolites and identified IPyA (indole-3-pyruvic acid) as the main biosynthesis pathway in Physcomitrium (Physcomitrella) patens and established knock-out, overexpressor and reporter lines for biosynthesis genes which were analyzed alongside previously reported auxin-sensing and transport reporters. Vegetative and reproductive apical stem cells synthesize auxin. Sustained stem cell activity depends on an inability to sense the auxin produced while progeny of the stem cells respond to the auxin, aiding in the control of cell division, expansion and differentiation. Gamete precursors are dependent on a certain degree of auxin sensing, while the final differentiation is a low auxin-sensing process. Tha data presented indicate that low auxin activity may represent a conserved hallmark of land plant gametes, and that local auxin biosynthesis in apical stem cells may be part of an ancestral mechanism to control focal growth.
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