Summary
In pea axillary meristems submitted to or released from apical dominance, basic nuclear proteins and their fractions (lysine or arginine-rich) were localized at the infrastructural level using convergent methods. In the inhibited nuclei, the condensed chromatin and the nucleoli are the most reactive regions to alcoholic solution of phosphotungstic acid and to ammoniacal silver nitrate. It is the same in the reactivated nuclei after the release from dominance, but the increase in diameter of the nucleoli is accompanied by the creation of a granular component which is observed around the nucleoli during the G1 S or G2 phases. This structure is built up essentially by a lysin-rich ribonucleoprotein complex characteristic of active nuclei.
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Nougarède, A. On the infrastructural localization of basic proteins in the nucleus and nucleolus of cells in pea axillary meristems submitted to or released from apical dominance. Protoplasma 93, 341–356 (1977). https://doi.org/10.1007/BF01275664
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DOI: https://doi.org/10.1007/BF01275664