TCP14 and TCP15 Mediate the Promotion of Seed Germination by Gibberellins in Arabidopsis thaliana

Resentini, Francesca; Felipo-Benavent, Amelia; Colombo, Lucia; Blázquez, Miguel Á.; Alabadı́, David; Masiero, Simona

doi:10.1016/j.molp.2014.11.018

Cited by 147 publications

(133 citation statements)

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“…PCF-like genes are also involved in the regulation of circadian clock genes, that is the case of CCA1 Hiking Expedition CHE (AtTCP21) (Pruneda-Paz et al, 2009; Giraud et al, 2010). In addition dimers formed between AtTCP15 and other TCP-like proteins (AtTCP2, AtTCP3, AtTCP11) are known to regulate circadian cycles, cell proliferation in floral organs and leaves, and to promote seed germination (Koyama et al, 2007; Kieffer et al, 2011; Resentini et al, 2015). PCF-like genes are also expressed in ovule, seed and fruit development in Solanum lycopersicum, Solanum tuberosum, O. sativa and in P. equestris , suggesting that they mediate cell proliferation in the carpel to fruit transition in both eudicots and monocots (Supplementary Figure 3; Kosugi and Ohashi, 1997; Yao et al, 2007; Parapunova et al, 2014; Lin et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, O. sativa PCF1 and PCF2 are involved in axillary meristem repression, likely via the activation of PROLIFERATING CELL NUCLEAR ANTIGEN (PCNA) , which encodes a protein involved in DNA replication and repair, maintenance of chromatin structure, chromosome segregation, and cell-cycle progression (Kosugi and Ohashi, 1997). Other studies in A. thaliana suggest that PCF-like genes are also involved in gametophyte development, transduction of hormonal signals, mitochondrial biogenesis, leaf and flower morphogenesis, seed germination, branching, and even circadian clock regulation (Koyama et al, 2007; Pruneda-Paz et al, 2009; Giraud et al, 2010; Kieffer et al, 2011; Resentini et al, 2015). Recent studies in the model orchid P. equestris have found that PeCIN8 ( CIN-like ) and PePCF10 ( PCF-like ) control cell proliferation and cell shape in petals, ovules and leaves (Lin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Evolution and Expression Patterns of TCP Genes in Asparagales

2017

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CYCLOIDEA-like genes are involved in the symmetry gene network, limiting cell proliferation in the dorsal regions of bilateral flowers in core eudicots. CYC-like and closely related TCP genes (acronym for TEOSINTE BRANCHED1, CYCLOIDEA, and PROLIFERATION CELL FACTOR) have been poorly studied in Asparagales, the largest order of monocots that includes both bilateral flowers in Orchidaceae (ca. 25.000 spp) and radially symmetrical flowers in Hypoxidaceae (ca. 200 spp). With the aim of assessing TCP gene evolution in the Asparagales, we isolated TCP-like genes from publicly available databases and our own transcriptomes of Cattleya trianae (Orchidaceae) and Hypoxis decumbens (Hypoxidaceae). Our matrix contains 452 sequences representing the three major clades of TCP genes. Besides the previously identified CYC specific core eudicot duplications, our ML phylogenetic analyses recovered an early CIN-like duplication predating all angiosperms, two CIN-like Asparagales-specific duplications and a duplication prior to the diversification of Orchidoideae and Epidendroideae. In addition, we provide evidence of at least three duplications of PCF-like genes in Asparagales. While CIN-like and PCF-like genes have multiplied in Asparagales, likely enhancing the genetic network for cell proliferation, CYC-like genes remain as single, shorter copies with low expression. Homogeneous expression of CYC-like genes in the labellum as well as the lateral petals suggests little contribution to the bilateral perianth in C. trianae. CIN-like and PCF-like gene expression suggests conserved roles in cell proliferation in leaves, sepals and petals, carpels, ovules and fruits in Asparagales by comparison with previously reported functions in core eudicots and monocots. This is the first large scale analysis of TCP-like genes in Asparagales that will serve as a platform for in-depth functional studies in emerging model monocots.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolution and Expression Patterns of TCP Genes in Asparagales

2017

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“…TCP14 physically interacts with SRFR1 and contributes to effector-triggered immunity (Kim et al, 2014). In various tissues, TCP14 promotes cytokinin and gibberellic acid growth hormone responses (Kieffer et al, 2011; Resentini et al, 2015; Steiner et al, 2012). TCP14 is localized to sub-nuclear foci and its co-expression resulted in the re-localization of 22/33 tested nuclear-localized effectors from the three pathogens noted above (Wessling et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Pseudomonas syringae Type III Effector HopBB1 Promotes Host Transcriptional Repressor Degradation to Regulate Phytohormone Responses and Virulence

Yang

Teixeira

Biswas

et al. 2017

Cell Host & Microbe

118

143

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Summary Independently evolved pathogen effectors from three branches of life (ascomycete, eubacteria and oomycete) converge onto the Arabidopsis TCP14 transcription factor to manipulate host defense. However, the mechanistic basis for defense control via TCP14 regulation is unknown. We demonstrate that TCP14 regulates the plant immune system by transcriptionally repressing a subset of the Jasmonic acid (JA) hormone signaling outputs. A previously unstudied Pseudomonas syringae (Psy) type III effector, HopBB1, interacts with TCP14 and targets it to the SCFCOI1- degradation complex by connecting it to the JA signaling repressor JAZ3. Consequently, HopBB1 de-represses the TCP14-regulated subset of JA response genes and promotes pathogen virulence. Thus, HopBB1 fine-tunes host phytohormone crosstalk by precisely manipulating part of the JA regulon to avoid pleiotropic host responses, while promoting pathogen proliferation.

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“…In A. thaliana , loss of DELLA function mimics the phenotype of plants treated with an excess of GAs, both anatomically and also at the transcriptional level (Schwechheimer, 2011; Locascio et al, 2013b). Work in the past few years has established that DELLAs regulate transcription through the interaction with more than 100 transcription factors (TFs) in A. thaliana (de Lucas et al, 2008; Feng et al, 2008; Crocco et al, 2010; Hou et al, 2010; Gallego-Bartolomé et al, 2012; Daviere et al, 2014; Marin-de la Rosa et al, 2014, 2015; Resentini et al, 2015). In some cases, interaction with the TF inhibits its ability to bind DNA, while in other cases DELLAs seem to act as co-activators (Locascio et al, 2013b; Daviere and Achard, 2016).…”

Section: Introductionmentioning

confidence: 99%

Evolutionary Analysis of DELLA-Associated Transcriptional Networks

et al. 2017

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DELLA proteins are transcriptional regulators present in all land plants which have been shown to modulate the activity of over 100 transcription factors in Arabidopsis, involved in multiple physiological and developmental processes. It has been proposed that DELLAs transduce environmental information to pre-wired transcriptional circuits because their stability is regulated by gibberellins (GAs), whose homeostasis largely depends on environmental signals. The ability of GAs to promote DELLA degradation coincides with the origin of vascular plants, but the presence of DELLAs in other land plants poses at least two questions: what regulatory properties have DELLAs provided to the behavior of transcriptional networks in land plants, and how has the recruitment of DELLAs by GA signaling affected this regulation. To address these issues, we have constructed gene co-expression networks of four different organisms within the green lineage with different properties regarding DELLAs: Arabidopsis thaliana and Solanum lycopersicum (both with GA-regulated DELLA proteins), Physcomitrella patens (with GA-independent DELLA proteins) and Chlamydomonas reinhardtii (a green alga without DELLA), and we have examined the relative evolution of the subnetworks containing the potential DELLA-dependent transcriptomes. Network analysis indicates a relative increase in parameters associated with the degree of interconnectivity in the DELLA-associated subnetworks of land plants, with a stronger effect in species with GA-regulated DELLA proteins. These results suggest that DELLAs may have played a role in the coordination of multiple transcriptional programs along evolution, and the function of DELLAs as regulatory ‘hubs’ became further consolidated after their recruitment by GA signaling in higher plants.

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TCP14 and TCP15 Mediate the Promotion of Seed Germination by Gibberellins in Arabidopsis thaliana

Cited by 147 publications

References 15 publications

Evolution and Expression Patterns of TCP Genes in Asparagales

Evolution and Expression Patterns of TCP Genes in Asparagales

Pseudomonas syringae Type III Effector HopBB1 Promotes Host Transcriptional Repressor Degradation to Regulate Phytohormone Responses and Virulence

Evolutionary Analysis of DELLA-Associated Transcriptional Networks

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