Autoradiographs of Pollen Tube Nuclei with Calcium-45

Autoradiography with Ca(45) has been used to obtain information about the relation between calcium and chromosomes. Labelled pollen from the Easter lily, Lilium longiflorum, was allowed to develop into pollen tubes between 5 and 6 cm. long in the styles of non-radioactive flowers. All of the nuclei,...

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Detalles Bibliográficos
Autores principales: Steffensen, Dale, Bergeron, John A.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1959
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2224692/
https://www.ncbi.nlm.nih.gov/pubmed/13834023
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author Steffensen, Dale
Bergeron, John A.
author_facet Steffensen, Dale
Bergeron, John A.
author_sort Steffensen, Dale
collection PubMed
description Autoradiography with Ca(45) has been used to obtain information about the relation between calcium and chromosomes. Labelled pollen from the Easter lily, Lilium longiflorum, was allowed to develop into pollen tubes between 5 and 6 cm. long in the styles of non-radioactive flowers. All of the nuclei, namely the tube nucleus and the two sperm nuclei, retain Ca(45) after this period of growth and development. Since the two sperm nuclei have formed during this interval by the mitotic division of the generative nucleus and growth of the tube has occurred under the influence of the tube nucleus, it is inferred that the calcium was bound in a stable nuclear component, the chromosomes.
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spelling pubmed-22246922008-05-01 Autoradiographs of Pollen Tube Nuclei with Calcium-45 Steffensen, Dale Bergeron, John A. J Biophys Biochem Cytol Article Autoradiography with Ca(45) has been used to obtain information about the relation between calcium and chromosomes. Labelled pollen from the Easter lily, Lilium longiflorum, was allowed to develop into pollen tubes between 5 and 6 cm. long in the styles of non-radioactive flowers. All of the nuclei, namely the tube nucleus and the two sperm nuclei, retain Ca(45) after this period of growth and development. Since the two sperm nuclei have formed during this interval by the mitotic division of the generative nucleus and growth of the tube has occurred under the influence of the tube nucleus, it is inferred that the calcium was bound in a stable nuclear component, the chromosomes. The Rockefeller University Press 1959-12-01 /pmc/articles/PMC2224692/ /pubmed/13834023 Text en Copyright © Copyright, 1959, by The Rockefeller Institute
spellingShingle Article
Steffensen, Dale
Bergeron, John A.
Autoradiographs of Pollen Tube Nuclei with Calcium-45
title Autoradiographs of Pollen Tube Nuclei with Calcium-45
title_full Autoradiographs of Pollen Tube Nuclei with Calcium-45
title_fullStr Autoradiographs of Pollen Tube Nuclei with Calcium-45
title_full_unstemmed Autoradiographs of Pollen Tube Nuclei with Calcium-45
title_short Autoradiographs of Pollen Tube Nuclei with Calcium-45
title_sort autoradiographs of pollen tube nuclei with calcium-45
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2224692/
https://www.ncbi.nlm.nih.gov/pubmed/13834023
work_keys_str_mv AT steffensendale autoradiographsofpollentubenucleiwithcalcium45
AT bergeronjohna autoradiographsofpollentubenucleiwithcalcium45

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