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- W2001951743 abstract "K.Y. Kim, H.J. Jeong, H.P. Main and D.J. Garbary. 2006. Fluorescence and photosynthetic competency in single eggs and embryos of Ascophyllum nodosum (Phaeophyceae). Phycologia 45: 331–336. DOI: 10.2216/05-40.1Pulse amplitude modulation (PAM) fluorometry was used in 2004 and 2005 to measure chlorophyll α fluorescence associated with photosystem II in eggs and embryos of Ascophyllum nodosum (Linnaeus) Le Jolis from the Atlantic coast of Nova Scotia. Fucoid eggs and embryos were maintained in the laboratory for 8 days over which fluorescence measurements were taken. Newly released eggs saturated at about 20 μmol photons m−2 s−1 with maximum electron transport rate (rETRmax) declining to <3 after 3 days. Embryos saturated at about 50 μmol photons m−2 s−1 and rETRmax increased to >11 by day 3. Although some egg senescence was apparent by day 3, some eggs continued to generate a strong photosynthetic signal throughout the 8-day experimental period, even though rETRmax was reduced. Differences in photosynthetic responses associated with fertilisation were apparent in Fv/Fm, within 24 h, and in rETRmax after 2 days. Eggs showed relatively stable or declining responses, whereas embryos showed stable or increasing responses. By day 8, quantum yield of embryos was similar to values reported elsewhere for mature fucoids." @default.
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- W2001951743 date "2006-05-01" @default.
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- W2001951743 title "Fluorescence and photosynthetic competency in single eggs and embryos of Ascophyllum nodosum (Phaeophyceae)" @default.
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- W2001951743 doi "https://doi.org/10.2216/05-40.1" @default.
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