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Article ; Online: Repressor for hire! The vital roles of TOPLESS-mediated transcriptional repression in plants.

Plant, Alastair Robert / Larrieu, Antoine / Causier, Barry

2021 Volume 231, Issue 3, Page(s) 963–973

Abstract: Transcriptional corepressors play important roles in establishing the appropriate levels of gene expression during growth and development. The TOPLESS (TPL) family of corepressors are critical for all plant life. TPLs are involved in numerous ... ...

Abstract	Transcriptional corepressors play important roles in establishing the appropriate levels of gene expression during growth and development. The TOPLESS (TPL) family of corepressors are critical for all plant life. TPLs are involved in numerous developmental processes and in the response to extrinsic challenges. As such these proteins have been the focus of intense study since Long and colleagues first described the TPL corepressor in 2006. In this review we will explore the evolutionary history of these essential plant-specific proteins, their mechanism of action based on recent structural analyses, and the myriad of pathways in which they function. We speculate how relatively minor changes in the peptide sequence of transcriptional regulators allowed them to recruit TPL into new processes, driving innovation and resulting in TPL becoming vital for plant development.
Language	English
Publishing date	2021-05-30
Publishing country	England
Document type	Journal Article
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.17428
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Repressor for hire! The vital roles of TOPLESS‐mediated transcriptional repression in plants

Plant, Alastair Robert / Larrieu, Antoine / Causier, Barry

The new phytologist. 2021 Aug., v. 231, no. 3

2021

Abstract	Transcriptional corepressors play important roles in establishing the appropriate levels of gene expression during growth and development. The TOPLESS (TPL) family of corepressors are critical for all plant life. TPLs are involved in numerous developmental processes and in the response to extrinsic challenges. As such these proteins have been the focus of intense study since Long and colleagues first described the TPL corepressor in 2006. In this review we will explore the evolutionary history of these essential plant‐specific proteins, their mechanism of action based on recent structural analyses, and the myriad of pathways in which they function. We speculate how relatively minor changes in the peptide sequence of transcriptional regulators allowed them to recruit TPL into new processes, driving innovation and resulting in TPL becoming vital for plant development.
Keywords	amino acid sequences ; gene expression ; growth and development ; mechanism of action ; plant development ; transcription (genetics)
Language	English
Dates of publication	2021-08
Size	p. 963-973.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.17428
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Use of Fluorescent Reporters to Analyse Dynamic and Spatial Responses to Mechanical Wounding.

Larrieu, Antoine / Nguyen, Trang Hieu / Champion, Antony

Methods in molecular biology (Clifton, N.J.)

2019 Volume 2085, Page(s) 161–168

Abstract: ... damage to the seedling, affecting downstream analyses (Larrieu A, Champion A, Legrand J, Nat Commun 6 ...

Abstract	Mechanical wounding of plant tissues triggers many different responses (Savatin DV, Gramegna G, Modesti V, Front Plant Sci 5:470, 2014). These are primarily mediated by the plant hormone Jasmonic Acid Isoleucine (JA-Ile). Recently, a fluorescent biosensor for JA-Ile showed that sample preparation (i.e., handling of samples) for fluorescent microscopy very often triggers wound response, even without apparent damage to the seedling, affecting downstream analyses (Larrieu A, Champion A, Legrand J, Nat Commun 6:6043, 2015). In this chapter, we describe how to overcome this technical limitation to monitor any fluorescent reporter or dye in response to wounding, using any type of fluorescent or confocal (inverted or upright, laser scanning or spinning disc) microscopes. Pharmacological or wound treatments can easily be performed and responses monitored over long periods of time. We further describe a simple method to extract and analyse quantitative data from confocal images using the open source software Fiji (Fiji Is Just ImageJ (Schindelin J, Arganda-Carreras I, Frise E, Nat Methods 9:676-682, 2012)) and OpenOffice.
MeSH term(s)	Arabidopsis/physiology ; Biosensing Techniques ; Data Analysis ; Fluorescence ; Fluorescent Dyes ; Germination ; Image Processing, Computer-Assisted ; Microscopy, Confocal ; Molecular Imaging ; Plant Growth Regulators/metabolism ; Plant Physiological Phenomena ; Seeds ; Wounds and Injuries
Chemical Substances	Fluorescent Dyes ; Plant Growth Regulators
Language	English
Publishing date	2019-11-13
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1940-6029
ISSN (online)	1940-6029
DOI	10.1007/978-1-0716-0142-6_12
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Q&A: How does jasmonate signaling enable plants to adapt and survive?

Larrieu, Antoine / Vernoux, Teva

BMC biology

2016 Volume 14, Page(s) 79

Abstract: Jasmonates (JAs) are a class of plant hormones that play essential roles in response to tissue wounding. They act on gene expression to slow down growth and to redirect metabolism towards producing defense molecules and repairing damage. These responses ... ...

Abstract	Jasmonates (JAs) are a class of plant hormones that play essential roles in response to tissue wounding. They act on gene expression to slow down growth and to redirect metabolism towards producing defense molecules and repairing damage. These responses are systemic and have dramatic impacts on yields, making JAs a very active research area. JAs interact with many other plant hormones and therefore also have essential functions throughout development, notably during plant reproduction, leaf senescence and in response to many biotic and abiotic stresses.
MeSH term(s)	Adaptation, Physiological ; Cyclopentanes/chemistry ; Cyclopentanes/metabolism ; Gene Expression Regulation, Plant ; Oxylipins/chemistry ; Oxylipins/metabolism ; Plant Cells/metabolism ; Plant Growth Regulators/metabolism ; Plants/genetics ; Signal Transduction
Chemical Substances	Cyclopentanes ; Oxylipins ; Plant Growth Regulators ; jasmonic acid (6RI5N05OWW)
Language	English
Publishing date	2016-09-19
Publishing country	England
Document type	Journal Article
ISSN	1741-7007
ISSN (online)	1741-7007
DOI	10.1186/s12915-016-0308-8
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Comparison of plant hormone signalling systems.

Larrieu, Antoine / Vernoux, Teva

Essays in biochemistry

2015 Volume 58, Page(s) 165–181

Abstract: Plant growth and development are controlled by nine structurally distinct small molecules termed phytohormones. Over the last 20 years, the molecular basis of their signal transduction, from receptors to transcription factors, has been dissected using ... ...

Abstract	Plant growth and development are controlled by nine structurally distinct small molecules termed phytohormones. Over the last 20 years, the molecular basis of their signal transduction, from receptors to transcription factors, has been dissected using mainly Arabidopsis thaliana and rice as model systems. Phytohormones can be broadly classified into two distinct groups on the basis of whether the subcellular localization of their receptors is in the cytoplasm or nucleus, and hence soluble, or membrane-bound, and hence insoluble. Soluble receptors, which control the responses to auxin, jasmonates, gibberellins, strigolactones and salicylic acid, signal either directly or indirectly via the destruction of regulatory proteins. Responses to abscisic acid are primarily mediated by soluble receptors that indirectly regulate the phosphorylation of targeted proteins. Insoluble receptors, which control the responses to cytokinins, brassinosteroids and ethylene, transduce their signal through protein phosphorylation. This chapter provides a comparison of the different components of these signalling systems, and discusses the similarities and differences between them.
MeSH term(s)	Arabidopsis/metabolism ; Oryza/metabolism ; Plant Growth Regulators/metabolism ; Signal Transduction
Chemical Substances	Plant Growth Regulators
Language	English
Publishing date	2015
Publishing country	England
Document type	Comparative Study ; Journal Article ; Review
ISSN	1744-1358 ; 0071-1365
ISSN (online)	1744-1358
ISSN	0071-1365
DOI	10.1042/bse0580165
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: m

Parker, Matthew T / Soanes, Beth K / Kusakina, Jelena / Larrieu, Antoine / Knop, Katarzyna / Joy, Nisha / Breidenbach, Friedrich / Sherwood, Anna V / Barton, Geoffrey J / Fica, Sebastian M / Davies, Brendan H / Simpson, Gordon Grant

eLife

2022 Volume 11

Abstract: Alternative splicing of messenger RNAs is associated with the evolution of developmentally complex eukaryotes. Splicing is mediated by the spliceosome, and docking of the pre-mRNA 5' splice site into the spliceosome active site depends upon pairing with ... ...

Abstract	Alternative splicing of messenger RNAs is associated with the evolution of developmentally complex eukaryotes. Splicing is mediated by the spliceosome, and docking of the pre-mRNA 5' splice site into the spliceosome active site depends upon pairing with the conserved ACAGA sequence of U6 snRNA. In some species, including humans, the central adenosine of the ACAGA box is modified by
Language	English
Publishing date	2022-11-21
Publishing country	England
Document type	Journal Article
ZDB-ID	2687154-3
ISSN	2050-084X ; 2050-084X
ISSN (online)	2050-084X
ISSN	2050-084X
DOI	10.7554/eLife.78808
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Article ; Online: The molecular signatures of compatible and incompatible pollination in Arabidopsis.

Kodera, Chie / Just, Jérémy / Da Rocha, Martine / Larrieu, Antoine / Riglet, Lucie / Legrand, Jonathan / Rozier, Frédérique / Gaude, Thierry / Fobis-Loisy, Isabelle

BMC genomics

2021 Volume 22, Issue 1, Page(s) 268

Abstract: Background: Fertilization in flowering plants depends on the early contact and acceptance of pollen grains by the receptive papilla cells of the stigma. Deciphering the specific transcriptomic response of both pollen and stigmatic cells during their ... ...

Abstract	Background: Fertilization in flowering plants depends on the early contact and acceptance of pollen grains by the receptive papilla cells of the stigma. Deciphering the specific transcriptomic response of both pollen and stigmatic cells during their interaction constitutes an important challenge to better our understanding of this cell recognition event. Results: Here we describe a transcriptomic analysis based on single nucleotide polymorphisms (SNPs) present in two Arabidopsis thaliana accessions, one used as female and the other as male. This strategy allowed us to distinguish 80% of transcripts according to their parental origins. We also developed a tool which predicts male/female specific expression for genes without SNP. We report an unanticipated transcriptional activity triggered in stigma upon incompatible pollination and show that following compatible interaction, components of the pattern-triggered immunity (PTI) pathway are induced on the female side. Conclusions: Our work unveils the molecular signatures of compatible and incompatible pollinations both at the male and female side. We provide invaluable resource and tools to identify potential new molecular players involved in pollen-stigma interaction.
MeSH term(s)	Arabidopsis/genetics ; Pollen/genetics ; Pollination/genetics ; Transcriptome
Language	English
Publishing date	2021-04-14
Publishing country	England
Document type	Journal Article
ZDB-ID	2041499-7
ISSN	1471-2164 ; 1471-2164
ISSN (online)	1471-2164
ISSN	1471-2164
DOI	10.1186/s12864-021-07503-7
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Article ; Online: Bat responses to changes in forest composition and prey abundance depend on landscape matrix and stand structure.

Froidevaux, Jérémy S P / Barbaro, Luc / Vinet, Olivier / Larrieu, Laurent / Bas, Yves / Molina, Jérôme / Calatayud, François / Brin, Antoine

Scientific reports

2021 Volume 11, Issue 1, Page(s) 10586

Abstract: Despite the key importance of the landscape matrix for bats, we still not fully understand how the effect of forest composition interacts at combined stand and landscape scales to shape bat communities. In addition, we lack detailed knowledge on the ... ...

Abstract	Despite the key importance of the landscape matrix for bats, we still not fully understand how the effect of forest composition interacts at combined stand and landscape scales to shape bat communities. In addition, we lack detailed knowledge on the effects of local habitat structure on bat-prey relationships in forested landscapes. We tested the assumptions that (i) forest composition has interacting effects on bats between stand and landscape scales; and (ii) stand structure mediates prey abundance effects on bat activity. Our results indicated that in conifer-dominated landscapes (> 80% of coniferous forests) bat activity was higher in stands with a higher proportion of deciduous trees while bats were less active in stands with a higher proportion of deciduous trees in mixed forest landscapes (~ 50% of deciduous forests). Moth abundance was selected in the best models for six among nine bat species. The positive effect of moth abundance on Barbastella barbastellus was mediated by vegetation clutter, with dense understory cover likely reducing prey accessibility. Altogether, our findings deepen our understanding of the ecological processes affecting bats in forest landscapes and strengthen the need to consider both landscape context and trophic linkage when assessing the effects of stand-scale compositional and structural attributes on bats.
MeSH term(s)	Animals ; Chiroptera ; Food Chain ; Forests ; France ; Moths ; Population Density
Language	English
Publishing date	2021-05-19
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-021-89660-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Rapid Prototyping Software for Avionics Systems

Larrieu, Nicolas / Varet, Antoine

Model-oriented Approaches for Complex Systems Certification

(Focus Series)

2014

Abstract: The design, implementation and validation of avionics and aeronautical systems have become extremely complex tasks due to the increase of functionalities that are deployed in current avionics systems and the need to be able certify them before putting ... ...

Series title	Focus Series
Abstract	The design, implementation and validation of avionics and aeronautical systems have become extremely complex tasks due to the increase of functionalities that are deployed in current avionics systems and the need to be able certify them before putting them into production. This book proposes a methodology to enable the rapid prototyping of such a system by considering from the start the certification aspects of the solution produced. This method takes advantage of the model-based design approaches as well as the use of formal methods for the validation of these systems. Furthermore, the use
Language	English
Size	Online-Ressource (154 p)
Document type	Book ; Online
Note	Description based upon print version of record
ISBN	1119050642 ; 1848217641 ; 9781119050643 ; 9781848217645 ; 9781848217645
DOI	10.1002/9781119050643
Database	ECONomics Information System

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Article ; Online: Transcriptional reprogramming during floral fate acquisition.

Larrieu, Antoine / Brunoud, Géraldine / Guérault, Aurore / Lainé, Stéphanie / Hennet, Lauriane / Stigliani, Arnaud / Gildea, Iris / Just, Jeremy / Soubigou-Taconnat, Ludivine / Balzergue, Sandrine / Davies, Brendan / Scarpella, Enrico / Helariutta, Ykä / Parcy, François / Vernoux, Teva

iScience

2022 Volume 25, Issue 7, Page(s) 104683

Abstract: Coordinating growth and patterning is essential for eukaryote morphogenesis. In plants, auxin is a key regulator of morphogenesis implicated throughout development. Despite this central role, our understanding of how auxin coordinates cell fate and ... ...

Abstract	Coordinating growth and patterning is essential for eukaryote morphogenesis. In plants, auxin is a key regulator of morphogenesis implicated throughout development. Despite this central role, our understanding of how auxin coordinates cell fate and growth changes is still limited. Here, we addressed this question using a combination of genomic screens to delve into the transcriptional network induced by auxin at the earliest stage of flower development, prior to morphological changes. We identify a shoot-specific network suggesting that auxin initiates growth through an antagonistic regulation of growth-promoting and growth-repressive hormones, quasi-synchronously to floral fate specification. We further identify two DNA-binding One Zinc Finger (DOF) transcription factors acting in an auxin-dependent network that could interface growth and cell fate from the early stages of flower development onward.
Language	English
Publishing date	2022-06-27
Publishing country	United States
Document type	Journal Article
ISSN	2589-0042
ISSN (online)	2589-0042
DOI	10.1016/j.isci.2022.104683
Database	MEDical Literature Analysis and Retrieval System OnLINE

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