Ravikumar, R.* ; Kalbfuß, N.* ; Gendre, D.* ; Steiner, A.* ; Altmann, M. ; Altmann, S. ; Rybak, K.* ; Edelmann, H.* ; Stephan, F.* ; Lampe, M.* ; Facher, E.* ; Wanner, G.* ; Falter-Braun, P. ; Bhalerao, R.P.* ; Assaad, F.F.*
Independent yet overlapping pathways ensure the robustness and responsiveness of trans-Golgi network functions in Arabidopsis.
Development 145:dev169201 (2018)
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 investigate two key regulators of TGN structure and function, ECHIDNA and the Transport Protein Particle II (TRAPPII) tethering complex. An analysis of physical, network and genetic interactions suggests that two network communities are implicated in TGN function and that ECHIDNA and TRAPPII belong to distinct yet overlapping pathways. Whereas ECHIDNA and TRAPPII colocalized at the TGN in interphase cells, their localization diverged in dividing cells. Moreover, ECHIDNA and TRAPPII localization patterns were mutually independent. TGN structure, endocytosis and sorting decisions were differentially impacted in echidna and trappii mutants. Our analyses point to a partitioning of specialized TGN functions, with ECHIDNA being required for cell elongation and TRAPPII for cytokinesis. Two independent pathways able to compensate for each other might contribute to the robustness of TGN housekeeping functions and to the responsiveness and fine tuning of its specialized functions.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Tgn ; Echidna ; Trappii ; Network Interactions ; Sorting ; Cytokinesis; Cell-wall Polysaccharides; Secretory Trafficking; Rab Gtpase; Protein; Cytokinesis; Membrane; Trappii; Colocalization; Dynamics; Complex
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2018
Prepublished im Jahr
HGF-Berichtsjahr
2018
ISSN (print) / ISBN
0950-1991
e-ISSN
1477-9129
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 145,
Heft: 21,
Seiten: ,
Artikelnummer: dev169201
Supplement: ,
Reihe
Verlag
Company of Biologists
Verlagsort
Bidder Building, Station Rd, Histon, Cambridge Cb24 9lf, England
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Network Biology (INET)
POF Topic(s)
30203 - Molecular Targets and Therapies
Forschungsfeld(er)
Environmental Sciences
PSP-Element(e)
G-506400-001
Förderungen
Copyright
Erfassungsdatum
2018-11-13