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231225s2003 xx |||||o 00| ||eng c |
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|a 10.1046/j.1469-8137.2003.00864.x
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Nielsen, Hanne D
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Inter-population differences in inherited copper tolerance involve photosynthetic adaptation and exclusion mechanisms in Fucus serratus
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|c 2003
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.04.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a • A comparative study of copper (Cu) toxicity and tolerance in three populations of Fucus serratus was conducted by examining Cu2+ effects on various physiological parameters. • Chlorophyll fluorescence, oxygen evolution, copper content, and relative growth rate of embryos and adults were measured on Cu2+ -exposed material. • Algae naturally exposed to elevated total Cu concentration (CuT ), were more Cu2+ resistant than those from clean sites, as indicated by higher embryo and adult growth rates and lower copper contents. The Cu2+ tolerance of F. serratus is at least partly inherited and relies partly on metal exclusion. • There were inhibitory effects of Cu2+ on oxygen exchange rates in both tolerant and non-tolerant algae. By contrast to sensitive algae, the maximum efficiency of photosystem II (Fv /Fm ), maximum fluorescence (Fm ) and zero fluorescence (Fo ) of resistant algae were unaffected by Cu2+ , whereas decreased quantum yield (ΦPSII) and increased nonphotochemical quenching (NPQ) were most pronounced in resistant algae. Inhibitory effects of Cu2+ on ΦPSII may result in the excitation energy being dissipated through xanthophyll-dependent quenching mechanisms in tolerant algae. In nontolerant algae, lower energy dissipation may result in chlorophyll degradation
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| 650 |
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4 |
|a Journal Article
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|a Cu2+
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| 650 |
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|a Fucus serratus (Phaeophyta)
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| 650 |
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4 |
|a algae
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| 650 |
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4 |
|a chlorophyll fluorescence
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| 650 |
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|a heavy metal
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| 650 |
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|a hyper-accumulation
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| 650 |
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|a photosynthesis
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| 650 |
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4 |
|a tolerance
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| 700 |
1 |
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|a Brownlee, Colin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Coelho, Susana M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Brown, Murray T
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 160(2003), 1 vom: 20. Okt., Seite 157-165
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:160
|g year:2003
|g number:1
|g day:20
|g month:10
|g pages:157-165
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