HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Tomenius, K. Articles by Oxelfelt, P. Search for Related Content PubMed Articles by Tomenius, K. Articles by Oxelfelt, P. Agricola Articles by Tomenius, K. Articles by Oxelfelt, P.

Ultrastructure of Pea Leaf Cells Infected with Three Strains of Red Clover Mottle Virus

Swedish University of Agricultural Sciences Department of Plant and Forest Protection, P.O. Box 7044, S-750 07 Uppsala, Sweden

Electron microscopy of pea (Pisum sativum L. cv. English Sabre) leaf cells, infected with three strains (N, S and O) of red clover mottle virus, revealed membranous inclusions characteristic of many comoviruses. The inclusions contained membranous vesicles with fine fibrils, osmiophilic globules and microbodies. The inclusions were not present in dark-green regions of systemically infected leaves (strains N and S). Membranous structures were also seen inside a few nuclei. In the chloroplasts of chlorotic regions of systemically infected leaves (strains N and S) phytoferritin was frequently observed. Chloroplasts in cells infected with strain O had no phytoferritin crystals, but were deformed by very large starch grains. Cell wall modifications were common in mesophyll regions infected with all three strains. Virus-like particles were found in all cell types, scattered or in crystals but not in the aggregated form in dark-green regions of systemically infected leaves (strains N and S).

Keywords: red clover mottle virus strains, ultrastructure, membranous inclusions

Received 27 November 1981; accepted 4 March 1982.