ReviewPlanta2012
Root phototropism: from dogma to the mechanism of blue light perception.
Review in Planta, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
The trial behind it
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
28 citing papers in PubMed, 79 citations in OpenAlex.
- Light is sufficient to compensate for random positioning machine-simulated microgravity in plant roots.NPJ microgravity · 2025Article
- Investigation ofPlant signaling & behavior · 2024Article
- Application of Green-enhanced Nano-lantern as a bioluminescent ratiometric indicator for measurement of Arabidopsis thaliana root apoplastic fluid pH.Plant, cell & environment · 2022Article
- Root growth direction in simulated microgravity is modulated by a light avoidance mechanism mediated by flavonols.Physiologia plantarum · 2022Article
- Root electrotropism in Arabidopsis does not depend on auxin distribution but requires cytokinin biosynthesis.Plant physiology · 2022Article
- Abscisic acid induced a negative geotropic response in dark-incubated Chlamydomonas reinhardtii.Scientific reports · 2019Article
- Root Tropisms: Investigations on Earth and in Space to Unravel Plant Growth Direction.Frontiers in plant science · 2019Review
- Light and plant development: the discovery of phototropins by Winslow R. Briggs (1928-2019).Plant signaling & behavior · 2019Article
- Light Signaling, Root Development, and Plasticity.Plant physiology · 2018Review
- Auxin Information Processing; Partners and Interactions beyond the Usual Suspects.International journal of molecular sciences · 2017Review
- Expression of Root Genes in Arabidopsis Seedlings Grown by Standard and Improved Growing Methods.International journal of molecular sciences · 2017Article
- Skewing in Arabidopsis roots involves disparate environmental signaling pathways.BMC plant biology · 2017Article
- A Soil-Plate Based Pipeline for Assessing Cereal Root Growth in Response to Polyethylene Glycol (PEG)-Induced Water Deficit Stress.Frontiers in plant science · 2017Article
- A novel blue-light phototropic response is revealed in roots of Arabidopsis thaliana in microgravity.Planta · 2016Article
- Flavonols Mediate Root Phototropism and Growth through Regulation of Proliferation-to-Differentiation Transition.The Plant cell · 2016Article
- Phytochrome A Mediates Blue-Light Enhancement of Second-Positive Phototropism in Arabidopsis.Frontiers in plant science · 2016Article
- Growth-limiting proteins in maize coleoptiles and the auxin-brassinosteroid hypothesis of mesocotyl elongation.Protoplasma · 2016Review
- Genetic control of root growth: from genes to networks.Annals of botany · 2016Review
- Phototropic solar tracking in sunflower plants: an integrative perspective.Annals of botany · 2016Review
- How and why do root apices sense light under the soil surface?Frontiers in plant science · 2015Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In roots, the "hidden half" of all land plants, gravity is an important signal that determines the direction of growth in the soil. Hence, positive gravitropism has been studied in detail. However, since the 19th century, the response of roots toward unilateral light has also been analyzed. Based on studies on white mustard (Sinapis alba) seedlings, botanists have concluded that all roots are negatively phototropic. This "Sinapis-dogma" was refuted in a seminal study on root phototropism published a century ago, where it was shown that less then half of the 166 plant species investigated behave like S. alba, whereas 53% displayed no phototropic response at all. Here we summarize the history of research on root phototropism, discuss this phenomenon with reference to unpublished data on garden cress (Lepidium sativum) seedlings, and describe the effects of blue light on the negative bending response in Thale cress (Arabidopsis thaliana). The ecological significance of root phototropism is discussed and the relationships between gravi- and phototropism are outlined, with respect to the starch-statolith-theory of gravity perception. Finally, we present an integrative model of gravi- and blue light perception in the root tip of Arabidopsis seedlings. This hypothesis is based on our current view of the starch-statolith-concept and light sensing via the cytoplasmic red/blue light photoreceptor phytochrome A and the plasma membrane-associated blue light receptor phototropin-1. Open questions and possible research agendas for the future are summarized.
Indexed as
Identifiers
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.