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The Role of Egg-Shell Calcium in the Hatching of He Ter Odera Schachtii

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For more content, see Nematology.

The Ca2+ content of Heterodera schachtii egg-shells was investigated by X-ray microanalysis. The egg-shells contained Ca2+, most of which was probably present in the inner lipoprotein membrane. Results from experiments with artificial hatching and non-hatching agents suggested that hatching agents, by binding to or replacing membrane-bound cations, induced structural change in the membrane and hence altered egg-shell permeability to solutes. The results are discussed in relation to previous work on the hatching mechanism of Globodera rostochiensis.

Affiliations: 1: Nematology Department, Rothamsted Experimental Station, Harpenden, Herts., England


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