ArticlePlant molecular biology2021
Class I TCP proteins TCP14 and TCP15 are required for elongation and gene expression responses to auxin.
Article in Plant molecular biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 49 citations in OpenAlex.
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- Genome-wide characterization of the TCP family in Lagerstroemia and functional analysis of LfiTCP12 uncover its role in shoot branching promotion.Plant cell reports · 2026Article
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- Comparative analysis of the transcriptomes from regenerated plants and root explants of endangered Oplopanax elatus.Genes & genomics · 2024Article
- Identification and Expression Analysis of TCP Transcription Factors Under Abiotic Stress inPlants (Basel, Switzerland) · 2024Article
- Insights into the genetic architecture of the reciprocal interspecific hybrids derived fromMolecular breeding : new strategies in plant improvement · 2024Article
- Different viral effectors hijack TCP17, a key transcription factor for host Auxin synthesis, to promote viral infection.PLoS pathogens · 2024Article
- Transcriptome Analysis Reveals Coexpression Networks and Hub Genes Involved in Papillae Development inInternational journal of molecular sciences · 2024Article
- Involvement of Abscisic Acid in Transition of Pea (Plants (Basel, Switzerland) · 2024Article
- Class I TCP in fruit development: much more than growth.Frontiers in plant science · 2024Review
- Genome-Wide Analysis of TCP Transcription Factors and Their Expression Pattern Analysis of Rose Plants (Current issues in molecular biology · 2023Article
- Dissection of Developmental Programs and Regulatory Modules Directing Endosperm Transfer Cell and Aleurone Identity in the Syncytial Endosperm of Barley.Plants (Basel, Switzerland) · 2023Article
- Physiological Roles and Mechanisms of Action of Class I TCP Transcription Factors.International journal of molecular sciences · 2023Review
- Advances in Research on the Regulation of Floral Development byCurrent issues in molecular biology · 2023Review
- Overexpression of theInternational journal of molecular sciences · 2022Article
- SAUR63 stimulates cell growth at the plasma membrane.PLoS genetics · 2022Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
key messageTwo class I TCP transcription factors are required for an efficient elongation of hypocotyls in response to auxin and for the correct expression of a subset of auxin-inducible genes In this work, we analyzed the response to auxin of plants with altered function of the class I TEOSINTE BRANCHED 1, CYCLOIDEA, PCF (TCP) transcription factors TCP14 and TCP15. Several SMALL AUXIN UP RNA (SAUR) genes showed decreased expression in mutant plants defective in these TCPs after an increase in ambient temperature to 29 °C, a condition that causes an increase in endogenous auxin levels. Overexpression of SAUR63 caused a more pronounced elongation response in the mutant than in the wild-type at 29 °C, suggesting that the decreased expression of SAUR genes is partly responsible for the defective elongation at warm temperature. Notably, several SAUR genes and the auxin response gene IAA19 also showed reduced expression in the mutant after auxin treatment, while the expression of other SAUR genes and of IAA29 was not affected or was even higher. Expression of the auxin reporter DR5::GUS was also higher in a tcp15 mutant than in a wild-type background after auxin treatment. However, the elongation of hypocotyls in response to auxin was impaired in the mutant. Remarkably, a significant proportion of auxin inducible genes and of targets of the AUXIN RESPONSE FACTOR 6 are regulated by TCP15 and often contain putative TCP recognition motifs in their promoters. Furthermore, we demonstrated that several among them are recognized by TCP15 in vivo. Our results indicate that TCP14 and TCP15 are required for an efficient elongation response to auxin, most likely by regulating a subset of auxin inducible genes related to cell expansion.
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