Plasticity of the Tannosome Ontogenesis in the Tracheophyta
Journal of Plant Sciences
Volume 2, Issue 6, December 2014, Pages: 317-323
Received: Nov. 28, 2014;
Accepted: Dec. 16, 2014;
Published: Dec. 22, 2014
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Jean-Marc Brillouet, UMR SPO INRA/SupAgro/UM I, Montpellier, France
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The tannosome, an organelle producing condensed tannins in the chlorophyllous organs of the Tracheohyta, is formed from the unstacked granal thylakoids by pearling into tiny spheres . Other variants of intraplastidial ontogenesis of the tannosomes were investigated in the Tracheophyta by transmission electron microscopy. The “pearl necklace” model consists in the formation of vaguely ellipsoidal loculi by inflation of the intrathylakoidal lumen in which emerge, bound to the inner face of the lumen, “pear necklace”-shaped suites of osmiophilic spheres (30 nm); once filled with tannins, these loculi can be described as giant tannosomes bound by a single thylakoidal membrane. In the “snail” model, the granal thylakoids whirl upon themselves while pearling tannosomes which remain, in the stroma, aggregated in vaguely spherical osmiophilic structures. While in the former model , numerous isolated tannosomes are packed in a shuttle, the aggregated tannosomes (“pearl necklace” and “snail” models) are ejected from the chloroplast by budding into shuttles.
Tannosome, Tracheophyta, Proanthocyanidins, Condensed Tannins, Polymerization
To cite this article
Plasticity of the Tannosome Ontogenesis in the Tracheophyta, Journal of Plant Sciences.
Vol. 2, No. 6,
2014, pp. 317-323.
J.-M. Brillouet, C. Romieu, B. Schoefs, K. Solymosi, V. Cheynier, H. Fulcrand, J.-L. Verdeil, and G. Conéjéro. 2013. The tannosome is an organelle forming condensed tannins in the chlorophyllous organs of Tracheophyta. Ann. Bot. 112:1003-1014 11003–1014.
G. J. Wagner and G. Hrazdina. 1984. Endoplasmic reticulum as a site of phenylpropanoid and flavonoid metabolism in Hippeastrum. Plant Physiol. 74: 901–906.
G. Hrazdina, A. M. Zobel, and H. C. Hoch. 1987. Biochemical, immunological and immunocytochemical evidence for the association of chalcone synthase with endoplasmic reticulum membranes. PNAS USA 84: 8966–8970.
I. E. Burbulis, and B. Winkel-Shirley. 1999. Interactions among enzymes of the Arabidopsis flavonoid biosynthetic pathway. PNAS USA 96: 12929–12934.
J. Zhao, Y. Pang, and R. A. Dixon. 2010. Update on biosynthesis of proanthocyanidins. The mysteries of proanthocyanidin transport and polymerization. Plant Physiol. 153: 437–443.
J. M. Brillouet, C. Romieu, M. Lartaud, E. Jublanc, L. Torregrosa, and C. Cazevieille. 2014. Formation of vacuolar tannin deposits in the chlorophyllous organs of Tracheophyta: from shuttles to accretions. Protoplasma 251: 1387-1393.
C. Sironval, R. Kirchman, R. Bronchart, and J. M. Michel. 1968. Sur le freinage de l’accumulation des chlorophylles dans les feuilles primordiales de Phaseolus vulgaris L. var. Commodore à` la suite d’une irradiation ; photorestauration en lumière continue. Photosynthetica 2: 57–67.
S. Sato, A. Adachi, Y. Sasaki, and M. Ghazizadeh. 2008. Oolong tea extract as a substitute for uranyl acetate in staining of ultrathin sections. J. Micros. 229: 17–20.
H. Falk. 1969. Rough thylakoids: polysomes attached to chloro plast membranes. J. Cell. Biol. 42: 582-587.
Hagerman AE, Butler HG. 1981. The specificity of proanthocyanidin–protein interactions. J. Biol. Chem. 256: 4444–4497.
K. Schoenhut, D. R.Vann, and B. A. Lepage. 2004. Cytological and ultrastructural preservation in Eocene Metasequoia leaves from the Canadian high arctic. Amer. J. Bot. 91: 816–824.
J. R. Austin II, E. Frost, P.-A. Vidi, F. Kessler, and L. A. Staehelin. 2006. Plastoglobules are lipoprotein subcompartments of the chloroplast that are permanently coupled to thylakoid membranes and contain biosynthetic enzymes. The Plant Cell 18: 1693–1703.