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Jolivet G, Daniel-Carlier N, Harscoët E, Airaud E, Dewaele A, Pierson C, Giton F, Boulanger L, Daniel N, Mandon-Pépin B, Pannetier M, Pailhoux E. Fetal Estrogens are not Involved in Sex Determination But Critical for Early Ovarian Differentiation in Rabbits. Endocrinology 2022; 163:6382335. [PMID: 34614143 PMCID: PMC8598387 DOI: 10.1210/endocr/bqab210] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 12/31/2022]
Abstract
AROMATASE is encoded by the CYP19A1 gene and is the cytochrome enzyme responsible for estrogen synthesis in vertebrates. In most mammals, a peak of CYP19A1 gene expression occurs in the fetal XX gonad when sexual differentiation is initiated. To elucidate the role of this peak, we produced 3 lines of TALEN genetically edited CYP19A1 knockout (KO) rabbits that were devoid of any estradiol production. All the KO XX rabbits developed as females with aberrantly small ovaries in adulthood, an almost empty reserve of primordial follicles, and very few large antrum follicles. Ovulation never occurred. Our histological, immunohistological, and transcriptomic analyses showed that the estradiol surge in the XX fetal rabbit gonad is not essential to its determination as an ovary, or for meiosis. However, it is mandatory for the high proliferation and differentiation of both somatic and germ cells, and consequently for establishment of the ovarian reserve.
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Affiliation(s)
- Geneviève Jolivet
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
- Correspondence: Geneviève Jolivet, domaine de Vilvert, INRAE, 78350 Jouy-en-Josas, France.
| | | | - Erwana Harscoët
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Eloïse Airaud
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Aurélie Dewaele
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Cloé Pierson
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Frank Giton
- AP-HP, Pôle biologie-Pathologie Henri Mondor, Créteil, France; INSERM IMRB U955, Créteil, France
| | - Laurent Boulanger
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Nathalie Daniel
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | | | - Maëlle Pannetier
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Eric Pailhoux
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
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Gautier T, Deckert V, Aires V, Le Guern N, Proukhnitzky L, Patoli D, Lemaire S, Maquart G, Bataille A, Xolin M, Magnani C, Masson D, Harscoët E, Da Silva B, Houdebine LM, Jolivet G, Lagrost L. Human apolipoprotein C1 transgenesis reduces atherogenesis in hypercholesterolemic rabbits. Atherosclerosis 2021; 320:10-18. [PMID: 33497863 DOI: 10.1016/j.atherosclerosis.2021.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 12/03/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND AND AIMS Apolipoprotein (apo) C1 is a 6.6 kDa protein associated with HDL and VLDL. ApoC1 alters triglyceride clearance, and it also favors cholesterol accumulation in HDL, especially by inhibiting CETP in human plasma. Apart from studies in mice, which lack CETP, the impact of apoC1 on atherosclerosis in animal models expressing CETP, like in humans, is not known. This study aimed at determining the net effect of human apoC1 on atherosclerosis in rabbits, a species with naturally high CETP activity but with endogenous apoC1 without CETP inhibitory potential. METHODS Rabbits expressing a human apoC1 transgene (HuApoC1Tg) were generated and displayed significant amounts of human apoC1 in plasma. RESULTS After cholesterol feeding, atherosclerosis lesions were significantly less extensive (-22%, p < 0.05) and HDL displayed a reduced ability to serve as CETP substrates (-25%, p < 0.05) in HuApoC1Tg rabbits than in WT littermates. It was associated with rises in plasma HDL cholesterol level and PON-1 activity, and a decrease in the plasma level of the lipid oxidation markers 12(S)-HODE and 8(S)HETE. In chow-fed animals, the level of HDL-cholesterol was also significantly higher in HuApoC1Tg than in WT animals (0.83 ± 0.11 versus 0.73 ± 0.11 mmol/L, respectively, p < 0.05), and it was associated with significantly lower CETP activity (cholesteryl ester transfer rate, -10%, p < 0.05; specific CETP activity, -14%, p < 0.05). CONCLUSIONS Constitutive expression of fully functional human apoC1 in transgenic rabbit attenuates atherosclerosis. It was found to relate, at least in part, to the inhibition of plasma CETP activity and to alterations in plasma HDL.
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Affiliation(s)
- Thomas Gautier
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France.
| | - Valérie Deckert
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Virginie Aires
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Naig Le Guern
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Lil Proukhnitzky
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Danish Patoli
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Stéphanie Lemaire
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Guillaume Maquart
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Amandine Bataille
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Marion Xolin
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - Charlène Magnani
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France
| | - David Masson
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France; University Hospital of Dijon, Dijon, France
| | - Erwana Harscoët
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Bruno Da Silva
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France; Laboratory of Developmental Biology, CNRS UMR7622, Université Pierre et Marie Curie, Paris, France
| | | | - Geneviève Jolivet
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Laurent Lagrost
- INSERM / University of Bourgogne Franche-Comté LNC UMR1231 and LipSTIC LabEx, UFR Sciences de Santé, Dijon, France; University Hospital of Dijon, Dijon, France
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Gautier T, Deckert V, Aires V, Le Guern N, Patoli D, Lemaire S, Maquart G, Bataille A, Xolin M, Magnani C, Masson D, Harscoët E, Da Silva B, Houdebine L, Jolivet G, Lagrost L. Human Apolipoprotein C1 Transgenesis To Inhibit Cetp And To Attenuate Atherosclerosis In Hypercholesterolemic Rabbits. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Jolivet G, Braud S, DaSilva B, Passet B, Harscoët E, Viglietta C, Gautier T, Lagrost L, Daniel-Carlier N, Houdebine LM, Harosh I. Induction of body weight loss through RNAi-knockdown of APOBEC1 gene expression in transgenic rabbits. PLoS One 2014; 9:e106655. [PMID: 25216115 PMCID: PMC4162549 DOI: 10.1371/journal.pone.0106655] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 08/01/2014] [Indexed: 01/07/2023] Open
Abstract
In the search of new strategies to fight against obesity, we targeted a gene pathway involved in energy uptake. We have thus investigated the APOB mRNA editing protein (APOBEC1) gene pathway that is involved in fat absorption in the intestine. The APOB gene encodes two proteins, APOB100 and APOB48, via the editing of a single nucleotide in the APOB mRNA by the APOBEC1 enzyme. The APOB48 protein is mandatory for the synthesis of chylomicrons by intestinal cells to transport dietary lipids and cholesterol. We produced transgenic rabbits expressing permanently and ubiquitously a small hairpin RNA targeting the rabbit APOBEC1 mRNA. These rabbits exhibited a moderately but significantly reduced level of APOBEC1 gene expression in the intestine, a reduced level of editing of the APOB mRNA, a reduced level of synthesis of chylomicrons after a food challenge, a reduced total mass of body lipids and finally presented a sustained lean phenotype without any obvious physiological disorder. Interestingly, no compensatory mechanism opposed to the phenotype. These lean transgenic rabbits were crossed with transgenic rabbits expressing in the intestine the human APOBEC1 gene. Double transgenic animals did not present any lean phenotype, thus proving that the intestinal expression of the human APOBEC1 transgene was able to counterbalance the reduction of the rabbit APOBEC1 gene expression. Thus, a moderate reduction of the APOBEC1 dependent editing induces a lean phenotype at least in the rabbit species. This suggests that the APOBEC1 gene might be a novel target for obesity treatment.
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Affiliation(s)
- Geneviève Jolivet
- INRA UMR1198, Biologie du Développement et Reproduction, Jouy en Josas, France
- * E-mail: (GJ); (IH)
| | | | - Bruno DaSilva
- INRA UMR1198, Biologie du Développement et Reproduction, Jouy en Josas, France
| | - Bruno Passet
- INRA UMR1313, Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France
| | - Erwana Harscoët
- INRA UMR1198, Biologie du Développement et Reproduction, Jouy en Josas, France
| | - Céline Viglietta
- INRA UMR1198, Biologie du Développement et Reproduction, Jouy en Josas, France
| | | | | | | | | | - Itzik Harosh
- ObeTherapy Biotechnology, Evry, France
- * E-mail: (GJ); (IH)
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Daniel-Carlier N, Harscoët E, Thépot D, Auguste A, Pailhoux E, Jolivet G. Gonad differentiation in the rabbit: evidence of species-specific features. PLoS One 2013; 8:e60451. [PMID: 23593221 PMCID: PMC3620232 DOI: 10.1371/journal.pone.0060451] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 02/25/2013] [Indexed: 11/19/2022] Open
Abstract
The rabbit is an attractive species for the study of gonad differentiation because of its 31-day long gestation, the timing of female meiosis around birth and the 15-day delay between gonadal switch and the onset of meiosis in the female. The expression of a series of genes was thus determined by qPCR during foetal life until adulthood, completed by a histological analysis and whenever possible by an immunohistological one. Interesting gene expression profiles were recorded. Firstly, the peak of SRY gene expression that is observed in early differentiated XY gonads in numerous mammals was also seen in the rabbit, but this expression was maintained at a high level until the end of puberty. Secondly, a peak of aromatase gene expression was observed at two-thirds of the gestation in XX gonads as in many other species except in the mouse. Thirdly, the expression of STRA8 and DMC1 genes (which are known to be specifically expressed in germ cells during meiosis) was enhanced in XX gonads around birth but also slightly and significantly in XY gonads at the same time, even though no meiosis occurs in XY gonad at this stage. This was probably a consequence of the synchronous strong NANOS2 gene expression in XY gonad. In conclusion, our data highlighted some rabbit-specific findings with respect to the gonad differentiation process.
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Affiliation(s)
- Nathalie Daniel-Carlier
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
| | - Erwana Harscoët
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
| | - Dominique Thépot
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
| | - Aurélie Auguste
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
| | - Eric Pailhoux
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
| | - Geneviève Jolivet
- UMR 1198, Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy en Josas, France
- * E-mail:
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Xu W, Grain D, Le Gourrierec J, Harscoët E, Berger A, Jauvion V, Scagnelli A, Berger N, Bidzinski P, Kelemen Z, Salsac F, Baudry A, Routaboul JM, Lepiniec L, Dubos C. Regulation of flavonoid biosynthesis involves an unexpected complex transcriptional regulation of TT8 expression, in Arabidopsis. New Phytol 2013; 198:59-70. [PMID: 23398515 DOI: 10.1111/nph.12142] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 12/11/2012] [Indexed: 05/20/2023]
Abstract
TT8/bHLH042 is a key regulator of anthocyanins and proanthocyanidins (PAs) biosynthesis in Arabidopsis thaliana. TT8 transcriptional activity has been studied extensively, and relies on its ability to form, with several R2R3-MYB and TTG1 (WD-Repeat protein), different MYB-bHLH-WDR (MBW) protein complexes. By contrast, little is known on how TT8 expression is itself regulated. Transcriptional regulation of TT8 expression was studied using molecular, genetic and biochemical approaches. Functional dissection of the TT8 promoter revealed its modular structure. Two modules were found to specifically drive TT8 promoter activity in PA- and anthocyanin-accumulating cells, by differentially integrating the signals issued from different regulators, in a spatio-temporal manner. Interestingly, this regulation involves at least six different MBW complexes, and an unpredicted positive feedback regulatory loop between TT8 and TTG2. Moreover, the results suggest that some putative new regulators remain to be discovered. Finally, specific cis-regulatory elements through which TT8 expression is regulated were identified and characterized. Together, these results provide a molecular model consistent with the specific and highly regulated expression of TT8. They shed new light into the transcriptional regulation of flavonoid biosynthesis and provide new clues and tools for further investigation in Arabidopsis and other plant species.
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Affiliation(s)
- Wenjia Xu
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Damaris Grain
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - José Le Gourrierec
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Erwana Harscoët
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Adeline Berger
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Vincent Jauvion
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Aurélie Scagnelli
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Nathalie Berger
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Przemyslaw Bidzinski
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Zsolt Kelemen
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Fabien Salsac
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Antoine Baudry
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Jean-Marc Routaboul
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Loïc Lepiniec
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
| | - Christian Dubos
- INRA, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, Saclay Plant Sciences, UMR1318, RD10, F-78026, Versailles, France
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Baud S, Mendoza MS, To A, Harscoët E, Lepiniec L, Dubreucq B. WRINKLED1 specifies the regulatory action of LEAFY COTYLEDON2 towards fatty acid metabolism during seed maturation in Arabidopsis. Plant J 2007; 50:825-38. [PMID: 17419836 DOI: 10.1111/j.1365-313x.2007.03092.x] [Citation(s) in RCA: 292] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The WRINKLED1 (WRI1) transcription factor has been shown to play a role of the utmost importance during oil accumulation in maturing seeds of Arabidopsis thaliana. However, little is known about the regulatory processes involved. In this paper, comprehensive functional analyses of three new mutants corresponding to null alleles of wri1 confirm that the induction of WRI1 is a prerequisite for fatty acid synthesis and is important for normal embryo development. The strong expression of WRI1 specifically detected at the onset of the maturation phase in oil-accumulating tissues of A. thaliana seeds is fully consistent with this function. Complementation experiments carried out with various seed-specific promoters emphasized the importance of a tight regulation of WRI1 expression for proper oil accumulation, raising the question of the factors controlling WRI1 transcription. Interestingly, molecular and genetic analyses using an inducible system demonstrated that WRI1 is a target of LEAFY COTYLEDON2 and is necessary for the regulatory action of LEC2 towards fatty acid metabolism. In addition to this, quantitative RT-PCR experiments suggested that several genes encoding enzymes of late glycolysis, the fatty acid synthesis pathway, and the biotin and lipoic acid biosynthetic pathways are targets of WRI1. Taken together, these results indicate new relationships in the regulatory model for the control of oil synthesis in maturing A. thaliana seeds. In addition, they exemplify how metabolic and developmental processes affecting the developing embryo can be coordinated at the molecular level.
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Affiliation(s)
- Sébastien Baud
- Laboratoire de Biologie des Semences, IJPB,UMR 204 INRA/AgroParis Tech, F-78026 Versailles, France
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