By Silvano Bonotto
Biology and Radiobiology of Anucleate platforms: II. Plant Cells encompasses the court cases of overseas Symposium held in Mol, June 21-23, 1971. The symposium is prepared by means of the dept of Radiobiology, Centre d'Etude de I'Energie Nucleaire (C.E.N./S.C.K.), Mol (Belgium) lower than the auspices of the fee of the ecu groups (EURATOM) and of the ""Relations Culturelles Internationales"" (Brussels). the purpose of the three-day symposium is to compile, for the 1st time, scientists engaged on anucleate platforms received from micro organism and animal or plant cells.
This quantity consists of sixteen papers touching on particularly to plant cells. every one paper is prepared in keeping with the date and consultation once they were provided.
This booklet will supply worthwhile info for evaluating the homes of anucleate Acetabularia with these of alternative anucleate cells, which might be very beneficial for higher realizing of many difficulties in regards to the nucleocytoplasmic relationships and mobile differentiation in basic and irradiated cells.
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Extra resources for Biology and Radiobiology of Anucleate Systems. Plant Cells
Rev. Cytol. 27, 29. H. F. W. ), Academic Press, London and New York. 82. W. G. (1969) J. Cell Biol, 42, 404-417. 83. K. and Muscatine,L. (1970) - Comp. Biochem. Physiol. 37, 113-117. 84. K. C. (1970) - Nature, Lond. 227, 196. 85. B. G. S. (1968) Biochem. Biophys. Res. Commun. 32, 413. 86. B. C. (1970) - PI. , Lancaster 45, 70-75. 87. R. and Lerson,S. (1969) - Biochem. Biophys. Res. Commun. 37, 278-82. 41 Fig. 1. Electron micrograph of a chloroplast in a leaf cell of Vicia faba L (x 3100). Fixed in glutaraldehyde/osmium and stained with lead citrate Embedded in Epon.
Carbohydrate metabolism does not seem to be implicated directly in this increase, since the chloroplasts of both whole and anucleate algae are capable of regulatory modulation in constant light. Implication of enzymes of the transformation of the carbohydrate degradation products in intermediate that cross the plastidial membrane is a likely hypothesis, which would be compatible with the variation of the ratio of the glucose to the fructose residues in the reserve carbohydrates of the chloroplasts of Acetabularia.
If the exchange of relatively simple molecules can have such a profound effect on chloroplast function, it is perhaps not surprising that as yet we have been unable to simulate the conditions inside the cell artificially. Ac knowled gement s The experiments on chloroplast survival were carried out in collaboration with Dr. M. Ridley who discovered the chloroplast division in vitro. I am also indebted to Dr. K. Trench for many interesting discussions and for permission to use the electron micrograph in Fig.