English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Intraplant variation in nuclear DNA content was quantified in DAPI-stained cells of  Laminaria saccharina  and  Alaria esculenta . In both species, meristoderm, cortical and medullary cells were examined from vegetative fronds. In addition, DNA was quantified during sporogenesis, in free-swimming zoospores and gametophytes of  A. esculenta . Zoospores and gametophytes had 1C (= N) levels of nuclear DNA in all cells, but vegetative cells of sporophytes varied from 2C to 16C. In  A. esculenta  nuclear DNA was significantly correlated with cell length, total cell volume and nuclear volume, whereas in  Laminaria saccharina  these correlations were not apparent. During sporogenesis of  Alaria esculenta , maximal nuclear DNA levels of 8C were present in post-meiotic nuclei. During four subsequent mitotic divisions (to form 64 zoospores per sporangium at the 1C level) only one cycle of DNA synthesis occurred. These results show that mitosis can be independent of DNA synthesis in Laminariales, and that endopolyploidy is a generalized feature of multicellular plants.

Intraplant Variation in Nuclear DNA Content in Laminaria saccharina and Alaria esculenta (Phaeophyceae)