Author： Krzesłowska M. Woźny A.
Publisher： Springer Publishing Company
ISSN： 0006-3134
Source： Biologia Plantarum, Vol.43, Iss.1, 2000-01, pp. : 93-98
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Abstract
Two-days-old protonemata of Funaria hygrometrica Hedw. growing in in vitro conditions were treated with 4 M PbCl_2 for 48 h. After this time grey or brown colour thickenings of the cell wall appeared in protonemata cells. They were then localized in tip parts of apical cells. Electron microscopical (TEM) observations showed that the thickenings were structurally connected with the wall and sometimes they included lead deposits. Cytochemically it was found that they contained pectic polysaccharides, callose, lipid substances (probably suberin or sporopollenin) and only few cellulose. Other compounds of cell wall, e.g. lignin and cutin were not detected.
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