ArticleScientific reports2020
The clock gene Gigantea 1 from Petunia hybrida coordinates vegetative growth and inflorescence architecture.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 30 citations in OpenAlex.
- Article
- The role of sucrose in maintaining pollen viability and germinability in Corylus avellana L.: a possible strategy to cope with climate variability.Protoplasma · 2025Article
- Petunia PHYTOCHROME INTERACTING FACTOR 4/5 transcriptionally activates key regulators of floral scent.Plant molecular biology · 2024Article
- Drought stress induces early flowering and the stress tolerance of offspring inPlant biotechnology (Tokyo, Japan) · 2024Article
- Comprehensive Analyses of FourPlants (Basel, Switzerland) · 2024Article
- Cell layer-specific expression of the homeotic MADS-box transcription factor PhDEF contributes to modular petal morphogenesis in petunia.The Plant cell · 2024Article
- SCARECROW-like GRAS protein PES positively regulates petunia floral scent production.Plant physiology · 2023Article
- Flower transcriptional response to long term hot and cold environments inFrontiers in plant science · 2023Article
- Developmental and temporal changes in petunia petal transcriptome reveal scent-repressing plant-specific RING-kinase-WD40 protein.Frontiers in plant science · 2023Article
- Identification and Characterization ofInternational journal of molecular sciences · 2022Article
- Article
- Effects of the repression of GIGANTEA gene StGI.04 on the potato leaf transcriptome and the anthocyanin content of tuber skin.BMC plant biology · 2022Article
- TheGenes · 2021Article
- gcProfileMakeR: An R Package for Automatic Classification of Constitutive and Non-Constitutive Metabolites.Metabolites · 2021Article
- Review
- The Effect of Post-harvest Conditions inFrontiers in plant science · 2020Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The gene GIGANTEA (GI) appeared early in land plants. It is a single copy gene in most plants and is found in two to three copies in Solanaceae. We analyzed the silencing of one GI copy, Petunia hybrida GI1 (PhGI1), by hairpin RNAs in Petunia in order to gain knowledge about its range of functions. Decreased transcript levels of PhGI1 were accompanied also by a reduction of PhGI2. They were further associated with increased time period between two consecutive peaks for PhGI1 and CHANEL (PhCHL), the orthologue of the blue light receptor gene ZEITLUPE (ZTL), confirming its role in maintaining circadian rhythmicity. Silenced plants were bigger with modified internode length and increased leaf size while flowering time was not altered. We uncovered a new function for PhGI1 as silenced plants showed reduction of flower bud number and the appearance of two flower buds in the bifurcation point, were normally one flower bud and the inflorescence meristem separate. Furthermore, one of the flower buds consistently showed premature flower abortion. Flowers that developed fully were significantly smaller as a result of decreased cell size. Even so the circadian pattern of volatile emission was unchanged in the silenced lines, flowers emitted 20% less volatiles on fresh weight basis over 24 hours and showed changes in the scent profile. Our results indicate a novel role of PhGI1 in the development of reproductive organs in Petunia. PhGI1 therefore represses growth in vegetative plant parts, maintains the typical cymose inflorescence structure, and inhibits premature flower abortion.
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