Jérôme Joubès
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View article: A dual component system instructs membrane hydrolysis during the final stages of plant autophagy
A dual component system instructs membrane hydrolysis during the final stages of plant autophagy Open
Autophagy is an intracellular catabolic process conserved across eukaryotes and critical for plant stress tolerance. Upon their delivery in the vacuole, how autophagic bodies containing cargo are hydrolyzed to warrant autophagy degradation…
View article: Structurally diverse herbicides inhibit β-keto-acyl-CoA synthases from monocotyledonous and dicotyledonous plant species
Structurally diverse herbicides inhibit β-keto-acyl-CoA synthases from monocotyledonous and dicotyledonous plant species Open
View article: Minimum leaf conductance variability during drought, towards a stable measurement protocol
Minimum leaf conductance variability during drought, towards a stable measurement protocol Open
International audience
View article: Plant and algal lipidomes: Analysis, composition, and their societal significance
Plant and algal lipidomes: Analysis, composition, and their societal significance Open
View article: Hello darkness, my old friend: 3-KETOACYL-COENZYME A SYNTHASE4 is a branch point in the regulation of triacylglycerol synthesis in <i>Arabidopsis thaliana</i>
Hello darkness, my old friend: 3-KETOACYL-COENZYME A SYNTHASE4 is a branch point in the regulation of triacylglycerol synthesis in <i>Arabidopsis thaliana</i> Open
Plant lipids are important as alternative sources of carbon and energy when sugars or starch are limited. Here, we applied combined heat and darkness or extended darkness to a panel of ∼300 Arabidopsis (Arabidopsis thaliana) accessions to …
View article: Tackling functional redundancy of Arabidopsis fatty acid elongase complexes
Tackling functional redundancy of Arabidopsis fatty acid elongase complexes Open
Very-long-chain fatty acids (VLCFA) are precursors for various lipids playing important physiological and structural roles in plants. Throughout plant tissues, VLCFA are present in multiple lipid classes essential for membrane homeostasis,…
View article: Phosphatidylinositol-4-phosphate joins the dance of plant autophagosome formation
Phosphatidylinositol-4-phosphate joins the dance of plant autophagosome formation Open
In plants, macroautophagy/autophagy is a key mechanism that contributes to their ability to cope with a wide range of environmental constraints such as drought, nutrient starvation or pathogen resistance. Nevertheless, the molecular mechan…
View article: Phosphatidylinositol-4-phosphate controls autophagosome formation in Arabidopsis thaliana
Phosphatidylinositol-4-phosphate controls autophagosome formation in Arabidopsis thaliana Open
View article: Predictive metabolomics of multiple Atacama plant species unveils a core set of generic metabolites for extreme climate resilience
Predictive metabolomics of multiple Atacama plant species unveils a core set of generic metabolites for extreme climate resilience Open
Summary Current crop yield of the best ideotypes is stagnating and threatened by climate change. In this scenario, understanding wild plant adaptations in extreme ecosystems offers an opportunity to learn about new mechanisms for resilienc…
View article: Biosynthesis and Functions of Very-Long-Chain Fatty Acids in the Responses of Plants to Abiotic and Biotic Stresses
Biosynthesis and Functions of Very-Long-Chain Fatty Acids in the Responses of Plants to Abiotic and Biotic Stresses Open
Very-long-chain fatty acids (i.e., fatty acids with more than 18 carbon atoms; VLCFA) are important molecules that play crucial physiological and structural roles in plants. VLCFA are specifically present in several membrane lipids and ess…
View article: Temperature Acclimation of the Picoalga Ostreococcus tauri Triggers Early Fatty-Acid Variations and Involves a Plastidial ω3-Desaturase
Temperature Acclimation of the Picoalga Ostreococcus tauri Triggers Early Fatty-Acid Variations and Involves a Plastidial ω3-Desaturase Open
Alteration of fatty-acid unsaturation is a universal response to temperature changes. Marine microalgae display the largest diversity of polyunsaturated fatty-acid (PUFA) whose content notably varies according to temperature. The physiolog…
View article: Hello darkness, my old friend: 3-Ketoacyl-Coenzyme A Synthase4 is a branch point in the regulation of triacylglycerol synthesis in<i>Arabidopsis thaliana</i>
Hello darkness, my old friend: 3-Ketoacyl-Coenzyme A Synthase4 is a branch point in the regulation of triacylglycerol synthesis in<i>Arabidopsis thaliana</i> Open
Due to their sessile lifestyle, plants have evolved unique mechanisms to deal with environmental challenges. Under stress, plant lipids are important as alternative sources of carbon and energy when sugars or starch are limited. Here, we a…
View article: Plastidic Δ6 Fatty-Acid Desaturases with Distinctive Substrate Specificity Regulate the Pool of C18-PUFAs in the Ancestral Picoalga <i>Ostreococcus tauri</i>
Plastidic Δ6 Fatty-Acid Desaturases with Distinctive Substrate Specificity Regulate the Pool of C18-PUFAs in the Ancestral Picoalga <i>Ostreococcus tauri</i> Open
Eukaryotic Δ6-desaturases are microsomal enzymes that balance the synthesis of ω-3 and ω-6 C18-polyunsaturated fatty acids (C18-PUFAs) according to their specificity. In several microalgae, including Ostreococcus tauri, plastidic C1…
View article: AtMYB92 enhances fatty acid synthesis and suberin deposition in leaves of <i>Nicotiana benthamiana</i>
AtMYB92 enhances fatty acid synthesis and suberin deposition in leaves of <i>Nicotiana benthamiana</i> Open
SUMMARY Acyl lipids are important constituents of the plant cell. Depending on the cell type, requirements in acyl lipids vary greatly, implying a tight regulation of fatty acid and lipid metabolism. The discovery of the WRINKLED1 (WRI1) t…
View article: Plastidic Δ6 fatty-acid desaturases with distinctive substrate specificity regulate the pool of c18-pufas in the ancestral picoalga<i>ostreococcus tauri</i>
Plastidic Δ6 fatty-acid desaturases with distinctive substrate specificity regulate the pool of c18-pufas in the ancestral picoalga<i>ostreococcus tauri</i> Open
Eukaryotic Δ6-desaturases are microsomal enzymes which balance the synthesis of ω-3 and ω-6 C18-polyunsaturated-fatty-acids (PUFA) accordingly to their specificity. In several microalgae, including O. tauri , plastidic C18-PUFA are specifi…
View article: A stress-response-related inter-compartmental signalling pathway regulates embryonic cuticle integrity in Arabidopsis
A stress-response-related inter-compartmental signalling pathway regulates embryonic cuticle integrity in Arabidopsis Open
The embryonic cuticle is necessary for normal seed development and seedling establishment in Arabidopsis. Although mutants with defective embryonic cuticles have been identified, neither the deposition of cuticle material, nor its regulati…
View article: Arabidopsis CER1-LIKE1 Functions in a Cuticular Very-Long-Chain Alkane-Forming Complex
Arabidopsis CER1-LIKE1 Functions in a Cuticular Very-Long-Chain Alkane-Forming Complex Open
Plant aerial organs are coated with cuticular waxes, a hydrophobic layer that primarily serves as a waterproofing barrier. Cuticular wax is a mixture of aliphatic very-long-chain molecules, ranging from 22 to 48 carbons, produced in the en…
View article: A stress-response-related inter-compartmental signalling pathway regulates embryonic cuticle integrity in Arabidopsis
A stress-response-related inter-compartmental signalling pathway regulates embryonic cuticle integrity in Arabidopsis Open
The embryonic cuticle is necessary for normal seed development and seedling establishment in Arabidopsis. Although mutants with defective embryonic cuticles have been identified, neither the deposition of cuticle material, nor its regulati…
View article: Lipids in membrane dynamics during autophagy in plants
Lipids in membrane dynamics during autophagy in plants Open
Autophagy is a critical pathway for plant adaptation to stress. Macroautophagy relies on the biogenesis of a specialized membrane named the phagophore that maturates into a double membrane vesicle. Proteins and lipids act synergistically t…
View article: Arabidopsis ketoacyl‐CoA synthase 16 (KCS16) forms C<sub>36</sub>/C<sub>38</sub> acyl precursors for leaf trichome and pavement surface wax
Arabidopsis ketoacyl‐CoA synthase 16 (KCS16) forms C<sub>36</sub>/C<sub>38</sub> acyl precursors for leaf trichome and pavement surface wax Open
The aliphatic waxes sealing plant surfaces against environmental stress are generated by fatty acid elongase complexes, each containing a β ‐ketoacyl‐CoA synthase (KCS) enzyme that catalyses a crucial condensation forming a new C─C bond to…
View article: Enrichment of hydroxylated C24- and C26-acyl-chain sphingolipids mediates PIN2 apical sorting at trans-Golgi network subdomains
Enrichment of hydroxylated C24- and C26-acyl-chain sphingolipids mediates PIN2 apical sorting at trans-Golgi network subdomains Open
View article: Primary Fatty Alcohols Are Major Components of Suberized Root Tissues of Arabidopsis in the Form of Alkyl Hydroxycinnamates
Primary Fatty Alcohols Are Major Components of Suberized Root Tissues of Arabidopsis in the Form of Alkyl Hydroxycinnamates Open
Suberin is a complex hydrophobic polymer that acts as a barrier controlling water and solute fluxes and restricting pathogen infections. Suberin is deposited immediately outside of the plasmalemma in the cell wall of certain tissues such a…
View article: The glycerol-3-phosphate acyltransferase GPAT6 from tomato plays a central role in fruit cutin biosynthesis
The glycerol-3-phosphate acyltransferase GPAT6 from tomato plays a central role in fruit cutin biosynthesis Open
The thick cuticle covering and embedding the epidermal cells of tomato (Solanum lycopersicum) fruit acts not only as a protective barrier against pathogens and water loss but also influences quality traits such as brightness and postharves…
View article: ECERIFERUM2-LIKE Proteins Have Unique Biochemical and Physiological Functions in Very-Long-Chain Fatty Acid Elongation
ECERIFERUM2-LIKE Proteins Have Unique Biochemical and Physiological Functions in Very-Long-Chain Fatty Acid Elongation Open
The extension of very-long-chain fatty acids (VLCFAs) for the synthesis of specialized apoplastic lipids requires unique biochemical machinery. Condensing enzymes catalyze the first reaction in fatty acid elongation and determine the chain…