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. 1976 Aug;3(8):2033–2039. doi: 10.1093/nar/3.8.2033

Effects of phytohormones on thermal denaturation profiles of Cymbidium DNA: indication of differential DNA replication.

W Nagl, W Rücker
PMCID: PMC343059  PMID: 967687

Abstract

Protocorm pieces of the orchid Cymbidium were aseptically cultured either without phytohormones, or with one of the growth promoting substances, auxin cytokinin, and gibberellin. The derivative melting profiles of the extracted DNA's differ from each other with respect to the size of various AT- and GC- rich fractions. Evidence has been obtained for the increase of the more AT--rich fractions in auxin-treated cultures, while gibberellin stimulated the expansion of the GC-rich fractions. These results are consistent with earlier cytological and cytochemical findings and indicate the involvement of hormone-controlled differential DNA replication in the development of Cymbidium protocorms in vitro.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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