期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1971
卷号：68
期号：10
页码：2431-2435
DOI：10.1073/pnas.68.10.2431
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：An immunocytochemical assay, which localizes phytochrome in situ, indicates that this plant chromoprotein is associated with both nuclei and plastids, in addition to the cytoplasm. In an etiolated oat shoot, phytochrome is most abundant just behind the apex of the coleoptile, where it is associated with parenchyma cells; it is apparently absent at the extreme apx of the coleoptile. Further back from the tip, phytochrome is found in the epidermal cells of the coleoptile; it decreases in concentration toward the node, where it is again abundant. Phytochrome is also abundant in the extreme apical cells of young adventitious roots and in association with the procambium of the mesocotyl.
