The cellular structure of the Hartig net: coenocytic and transfer cell‐like organization

Abstract:

The organization of the Hartig net in the mature state was studied in mycorrhizas of Amanita muscaria (Pers. ex. Fries) Hook. Picea abies (L.) Karst. grown in vitro. The tips of the fan‐like branched hyphae contain dense cytoplasm with a large number of mitochondria and rER frequently stretched in the direction of the hyphal growth, indicating that active transfer of solutes between host and fungus is localized here. Lack of septation of the hyphae and their intimate juxtaposition, leaving no space in between, result in a coenocytic, transfer cell‐like structure of the Hartig net. The multinucleate status of the cells is shown. The advantage of this organization for nutrient exchange between host and fungus and for nutrient transport within the hyphal system is discussed. Copyright © 1987, Wiley Blackwell. All rights reserved

Año de publicación:

1987

Keywords:

Fuente:

scopus