ArticlePlanta2018
The combined effects of real or simulated microgravity and red-light photoactivation on plant root meristematic cells.
Article in Planta, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
18 citing papers in PubMed, 34 citations in OpenAlex.
- Optimizing plant growth and pigment profiles of African marigold (Tagetes erecta L.) under different light spectra.BMC plant biology · 2025Article
- Light regulates the synthesis and accumulation of plant secondary metabolites.Frontiers in plant science · 2025Review
- Light has a principal role in the Arabidopsis transcriptomic response to the spaceflight environment.NPJ microgravity · 2024Article
- Perspectives for plant biology in space and analogue environments.NPJ microgravity · 2023Review
- Recent insights into metabolic and signalling events of directional root growth regulation and its implications for sustainable crop production systems.Frontiers in plant science · 2023Review
- Gravi-Sensitivity of Mosses and Their Gravity-Dependent Ontogenetic Adaptations.Life (Basel, Switzerland) · 2022Review
- Red Light Enhances Plant Adaptation to Spaceflight and MarsLife (Basel, Switzerland) · 2022Review
- Microgravity enhances the phenotype of Arabidopsis zigzag-1 and reduces the Wortmannin-induced vacuole fusion in root cells.NPJ microgravity · 2022Article
- Root growth direction in simulated microgravity is modulated by a light avoidance mechanism mediated by flavonols.Physiologia plantarum · 2022Article
- Use of Reduced Gravity Simulators for Plant Biological Studies.Methods in molecular biology (Clifton, N.J.) · 2022Article
- Conducting Plant Experiments in Space and on the Moon.Methods in molecular biology (Clifton, N.J.) · 2022Review
- Plant Gravitropism and Signal Conversion under a Stress Environment of Altered Gravity.International journal of molecular sciences · 2021Review
- Potential evidence for transgenerational epigenetic memory in Arabidopsis thaliana following spaceflight.Communications biology · 2021Article
- From Spaceflight to MarsInternational journal of molecular sciences · 2021Article
- Transcriptomic Analysis of the Interaction BetweenFrontiers in cell and developmental biology · 2021Article
- Article
- RNAseq Analysis of the Response ofFrontiers in plant science · 2019Article
- Effect of Weightlessness on the 3D Structure Formation and Physiologic Function of Human Cancer Cells.BioMed research international · 2019Review
Corrections and comments
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Authors and funding
9 authors at 5 institutions in 3 countries.
Funding
Abstract
MAIN
conclusionRed light is able to compensate for deleterious effects of microgravity on root cell growth and proliferation. Partial gravity combined with red light produces differential signals during the early plant development. Light and gravity are environmental cues used by plants throughout evolution to guide their development. We have investigated the cross-talk between phototropism and gravitropism under altered gravity in space. The focus was on the effects on the meristematic balance between cell growth and proliferation, which is disrupted under microgravity in the dark. In our spaceflight experiments, seedlings of three Arabidopsis thaliana genotypes, namely the wild type and mutants of phytochrome A and B, were grown for 6 days, including red-light photoactivation for the last 2 days. Apart from the microgravity and the 1g on-board control conditions, fractional gravity (nominally 0.1g, 0.3g, and 0.5g) was created with on-board centrifuges. In addition, a simulated microgravity (random positioning machine, RPM) experiment was performed on ground, including both dark-grown and photostimulated samples. Photoactivated samples in spaceflight and RPM experiments showed an increase in the root length consistent with phototropic response to red light, but, as gravity increased, a gradual decrease in this response was observed. Uncoupling of cell growth and proliferation was detected under microgravity in darkness by transcriptomic and microscopic methods, but red-light photoactivation produced a significant reversion. In contrast, the combination of red light and partial gravity produced small but consistent variations in the molecular markers of cell growth and proliferation, suggesting an antagonistic effect between light and gravity signals at the early plant development. Understanding these parameters of plant growth and development in microgravity will be important as bioregenerative life support systems for the colonization of the Moon and Mars.
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What OpenQuestion holds
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.