ArticlePlant signaling & behavior2014
Identification of gravitropic response indicator genes in Arabidopsis inflorescence stems.
Article in Plant signaling & behavior, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 33 citations in OpenAlex.
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- Flower movement induced by weather-dependent tropism satisfies attraction and protection.Nature communications · 2025Article
- How it all begins: molecular players of the early graviresponse in the non-elongating part of flax stem.Plant molecular biology · 2025Article
- Review
- AtSNP_TATAdb: Candidate Molecular Markers of Plant Advantages Related to Single Nucleotide Polymorphisms within Proximal Promoters ofInternational journal of molecular sciences · 2024Article
- Conserved plant transcriptional responses to microgravity from two consecutive spaceflight experiments.Frontiers in plant science · 2023Article
- Leveraging orthology within maize and Arabidopsis QTL to identify genes affecting natural variation in gravitropism.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Genome-wide characterization and expression analysis of SAUR gene family in Melon (Cucumis melo L.).Planta · 2022Article
- Transcription Profile of Auxin Related Genes during Positively Gravitropic Hypocotyl Curvature ofPlants (Basel, Switzerland) · 2022Article
- Plant growth promotion by the interaction of a novel synthetic small molecule with GA-DELLA function.Plant direct · 2022Article
- Functional Characterization ofInternational journal of molecular sciences · 2022Article
- Plant Gravitropism: From Mechanistic Insights into Plant Function on Earth to Plants Colonizing Other Worlds.Methods in molecular biology (Clifton, N.J.) · 2022Review
- Grape Small Auxin Upregulated RNA (International journal of molecular sciences · 2021Article
- Transcriptomic Analysis of Radish (Plants (Basel, Switzerland) · 2021Article
- Switching the Direction of Stem Gravitropism by Altering Two Amino Acids in AtLAZY1.Plant physiology · 2020Article
- Prediction of auxin response elements based on data fusion in Arabidopsis thaliana.Molecular biology reports · 2018Article
- A Core Regulatory Pathway Controlling Rice Tiller Angle Mediated by theThe Plant cell · 2018Article
- A subset of plasma membrane-localized PP2C.D phosphatases negatively regulate SAUR-mediated cell expansion in Arabidopsis.PLoS genetics · 2018Article
- Article
- The Arabidopsis LAZY1 Family Plays a Key Role in Gravity Signaling within Statocytes and in Branch Angle Control of Roots and Shoots.The Plant cell · 2017Article
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Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Differential organ growth during gravitropic response is caused by differential accumulation of auxin, that is, relative higher auxin concentration in lower flanks than in upper flanks of responding organs. Auxin responsive reporter systems such as DR5::GUS and DR5::GFP have usually been used as indicators of gravitropic response in roots and hypocotyls of Arabidopsis. However, in the inflorescence stems, the reporter systems don't work well to monitor gravitropic response. Here, we aim to certify appropriate gravitropic response indicators (GRIs) in inflorescence stems. We performed microarray analysis comparing gene expression profiles between upper and lower flanks of Arabidopsis inflorescence stems after gravistimulation. Thirty genes showed > 2-fold differentially increased expression in lower flanks at 30 min, of which 19 were auxin response genes. We focused on IAA5 and IAA2 and verified whether they are appropriate GRIs by real-time qRT-PCR analyses. Transcript levels of IAA5 and IAA2 were remarkably higher in lower flanks than in upper flanks after gravistimulation. The biased IAA5 or IAA2 expression is disappeared in sgr2-1 mutant which is defective in gravity perception, indicating that gravity perception process is essential for formation of the biased gene expression during gravitropism. IAA5 expression was remarkably increased in lower flanks at 30 min after gravistimulation, whereas IAA2 expression was gradually decreased in upper flanks in a time-dependent manner. Therefore, we conclude that IAA5 is a sensitive GRI to monitor asymmetric auxin signaling caused by gravistimulation in Arabidopsis inflorescence stems.
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