Delphine Gendre

TYPHON proteins are RAB-dependent mediators of the trans-Golgi network secretory pathway

Anirban Baral, Delphine Gendre, Bibek Aryal, Bernadette Sztojka et autres

The trans-Golgi network (TGN), a key compartment in endomembrane trafficking, participates in both secretion to and endocytosis from the plasma membrane. Consequently, the TGN plays a key role in plant growth and development. Understanding how proteins are sorted for secretion or endocytic …

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TYPHON proteins are RAB-dependent mediators of the trans-Golgi network secretory pathway

Anirban Baral, Delphine Gendre, Bibek Aryal, Louise Fougère et autres

The trans-Golgi network (TGN), a key compartment in endomembrane trafficking, participates in both secretion to and endocytosis from the plasma membrane. Consequently, the TGN plays a key role in plant growth and development. Understanding how proteins are sorted for secretion or endocytic …

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New Impact in Numbers and Beyond

Ykä Helariutta, Karin Fredriksson, Delphine Gendre, Maria Lundmark et autres

The aim was to promote plant physiology research in the Nordic countries (Sweden, Norway, Finland, Denmark) at a time when Germany dominated the experimental sciences in Europe.A lot has happened since then, and Physiologia Plantarum has become a respected international journal, publishing …

Rho-of-plant activated root hair formation requires Arabidopsis YIP4a/b gene function

Delphine Gendre, Anirban Baral, Xie Dang, Nicolas Esnay et autres

Root hairs are protrusions from root epidermal cells with crucial roles in plant soil interactions. Although much is known about patterning, polarity and tip growth of root hairs, contributions of membrane trafficking to hair initiation remain poorly understood. Here, we demonstrate that …

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Independent yet overlapping pathways ensure the robustness and responsiveness of trans-Golgi network functions in Arabidopsis

Raksha Ravikumar, Nils Kalbfuß, Delphine Gendre, Alexander Steiner et autres

ABSTRACT The trans-Golgi-network (TGN) has essential housekeeping functions in secretion, endocytosis and protein sorting, but also more specialized functions in plant development. How the robustness of basal TGN function is ensured while specialized functions are differentially regulated is poorly understood. Here, we …

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Ethylene Regulates Differential Growth via BIG ARF-GEF-Dependent Post-Golgi Secretory Trafficking in Arabidopsis

Kristoffer Jonsson, Yohann Boutté, Rajesh Kumar Singh, Delphine Gendre et autres

During early seedling development, the shoot apical meristem is protected from damage as the seedling emerges from soil by the formation of apical hook. Hook formation requires differential growth across the epidermis below the meristem in the hypocotyl. The plant hormones ethylene …

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Implementing SA8000 certification standards

Éric Davoine, Delphine Gendre

Purpose – The aim of this paper is to identify difficulties and tension fields encountered in a Social Accountability (SA) 8000 certification process. The paper is based on a case study within a multinational small–medium enterprise (SME) during the implementation of a …

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Journey to the cell surface—the central role of the trans-Golgi network in plants

Delphine Gendre, Kristoffer Jonsson, Yohann Boutté, Rishikesh P. Bhalerao

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Seed Coat Ruthenium Red Staining Assay

Heather E. McFarlane, Delphine Gendre, Tamara L. Western

The goal of this protocol is to assay for defects in synthesis/secretion/release of seed coat mucilage by ruthenium red staining of mature whole seeds.The mucilage secretory cells of the Arabidopsis seed coat synthesize and secrete a large quantity of primarily pectinaceous mucilage …

Cell Wall Polysaccharides are Mislocalized to the Vacuole in echidna Mutants

Heather E. McFarlane, Yoichiro Watanabe, Delphine Gendre, Kimberley Carruthers et autres

During cell wall biosynthesis, the Golgi apparatus is the platform for cell wall matrix biosynthesis and the site of packaging, of both matrix polysaccharides and proteins, into secretory vesicles with the correct targeting information. The objective of this study was to dissect …

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ECHIDNA-mediated post-Golgi trafficking of auxin carriers for differential cell elongation

Yohann Boutté, Kristoffer Jonsson, Heather E. McFarlane, Errin Johnson et autres

The plant hormone indole-acetic acid (auxin) is essential for many aspects of plant development. Auxin-mediated growth regulation typically involves the establishment of an auxin concentration gradient mediated by polarly localized auxin transporters. The localization of auxin carriers and their amount at the …

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Trans-Golgi Network Localized ECHIDNA/Ypt Interacting Protein Complex Is Required for the Secretion of Cell Wall Polysaccharides inArabidopsis

Delphine Gendre, Heather E. McFarlane, Errin Johnson, Grégory Mouille et autres

The secretion of cell wall polysaccharides through the trans-Golgi network (TGN) is required for plant cell elongation. However, the components mediating the post-Golgi secretion of pectin and hemicellulose, the two major cell wall polysaccharides, are largely unknown. We identified evolutionarily conserved YPT/RAB …

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