ArticleFrontiers in plant science2021
An Integrative Model of Plant Gravitropism Linking Statoliths Position and Auxin Transport.
Article in Frontiers in plant science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 11 citations in OpenAlex.
- Angle dependence as a unifying feature of root graviresponse modules.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Biomechanical analysis reveals hormonal crosstalk in inflorescence bending of cut stock flower.Scientific reports · 2025Article
- How it all begins: molecular players of the early graviresponse in the non-elongating part of flax stem.Plant molecular biology · 2025Article
- A quantitative model for spatio-temporal dynamics of root gravitropism.Journal of experimental botany · 2024Article
- Simulated microgravity facilitates stomatal ingression by Salmonella in lettuce and suppresses a biocontrol agent.Scientific reports · 2024Article
- Plants sum and subtract stimuli over different timescales.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Dynamic GOLVEN-ROOT GROWTH FACTOR 1 INSENSITIVE signaling in the root cap mediates root gravitropism.Plant physiology · 2023Article
- High-gradient magnetic fields and starch metabolism: results from a space experiment.Scientific reports · 2022Article
- Genome-Wide Identification and Characterization of PIN-FORMED (PIN) Gene Family Reveals Role in Developmental and Various Stress Conditions inInternational journal of molecular sciences · 2021Article
- Nutations in Plant Shoots: Endogenous and Exogenous Factors in the Presence of Mechanical Deformations.Frontiers in plant science · 2021Article
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Authors and funding
3 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Gravity is a major cue for the proper growth and development of plants. The response of plants to gravity implies starch-filled plastids, the statoliths, which sediments at the bottom of the gravisensing cells, the statocytes. Statoliths are assumed to modify the transport of the growth hormone, auxin, by acting on specific auxin transporters, PIN proteins. However, the complete gravitropic signaling pathway from the intracellular signal associated to statoliths to the plant bending is still not well-understood. In this article, we build on recent experimental results showing that statoliths do not act as gravitational force sensor, but as position sensor, to develop a bottom-up theory of plant gravitropism. The main hypothesis of the model is that the presence of statoliths modifies PIN trafficking close to the cell membrane. This basic assumption, coupled with auxin transport and growth in an idealized tissue made of a one-dimensional array of cells, recovers several major features of the gravitropic response of plants. First, the model provides a new interpretation for the response of a plant to a steady stimulus, the so-called sine-law of plant gravitropism. Second, it predicts the existence of a gravity-independent memory process as observed recently in experiments studying the response to transient stimulus. The model suggests that the timescale of this process is associated to PIN turnover, calling for new experimental studies.
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