Details

Autor(en) / Beteiligte

• Calvert, H.E.
• Pence, M.K.
• Peters, G.A.

Titel

The Ultrastructure of Cellular Ontogeny in Leaf Cavity Trichomes of Azolla Caroliniana Willd

Ist Teil von

• Proceedings, annual meeting, Electron Microscopy Society of America, 1982, Vol.40, p.152-153

Erscheinungsjahr

1982

Beschreibungen/Notizen

• A cyanobacterium, Anabaena azollae, lives symbiotically with the water-fern Azolla. It occupies cavities formed in the AzoIIa leaves and can provide the association with its total N requirement by fixing N 2 . Multicellular trichomes, present on the walls of the cavities, are intimately associated with the microsymbiont. The discovery of transfer cell ultrastructure in some of these trichomes has led to suggestions that they may be involved in metabolic exchange between the partners. To gain insight into their role in the symbiosis, the ontogeny of the cavity trichomes has been examined in detail and its stages correlated with microsymbiont development and N 2 fixation activity.