[Role of the nucleolus in plant cell response to environmental physical factors]
Tsitologiia I Genetika
|January 12, 2002
Abstract:
Contemporary data on ultrastructural reconstruction and changes in functional nucleolus activity in plant cells affected by physical environmental factors are presented. The main attention is paid to modifications of ribosomal gene expression under these conditions and induced changes in r-chromatin structure and ribosomal DNA localization. Recent data on fine nucleolus structure and molecular aspects of its organization as well as influence of microgravitation and clinostating on structural and functional organization of plant nucleoli are reported.
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Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
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