Genetic differentiation among populations of marine algae

Innes, David J.

doi:10.1007/bf02027689

Cited by 40 publications

(16 citation statements)

References 48 publications

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“…The variation of biological characteristics within the Porphyra population may result from selection in significant difference in temperature, which means adaptive-genetic variety may occur. Research has indicated that differentiation among populations of marine algae can be the result of direct modification of the environmental temperature difference (Bolton 1983;Innes 1984). The differentiation may manifest as morphological, physiological, and biochemical differences (Innes 1984).…”

Section: Discussionmentioning

confidence: 99%

Analysis of photosynthetic pigments and chlorophyll fluorescence characteristics of different strains of Porphyra yezoensis

Tao

Shen

et al. 2011

J Appl Phycol

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The levels of photosynthetic pigments and chlorophyll fluorescence of Porphyra yezoensis strains selected from high-light environments were investigated. Sutong and Sulian strains originated from the same high-light environment but were selected from different sites on the Yellow Sea coast of Jiangsu Province, China. In January (a low temperature period), the Sulian strain and the WT (a widely cultivated strain) had higher levels of chlorophyll a, phycoerythrin, phycocyanin, and allophycocyanin, and higher actual photochemical efficiency of PSII (ΔF/F m ′) than the Sutong strain. This indicated that Sulian and the WT may have better adaptation to low temperature. In March (an optimal temperature period), Sutong had higher levels of photosynthetic pigments and higher ΔF/F m ′ than the WT and Sulian strains. This suggested that Sutong had higher light use efficiency at optimal temperatures and that most energy absorbed by PSII was used for photosynthetic electron transport. The differing areas of origin of these strains may have resulted in these differences in temperature adaptation.

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Section: Discussionmentioning

confidence: 99%

Analysis of photosynthetic pigments and chlorophyll fluorescence characteristics of different strains of Porphyra yezoensis

Tao

Shen

et al. 2011

J Appl Phycol

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“…The methodology employed in this paper might be particularly useful in indicating biochemical differentidtion in populations that are morphologically undifferentiated. Similarly, isozyme studies such as those discussed by Innes (1984) would be useful; however, it should be noted that there are considerable problems in giving phylogenetic interpretations to such data types (Farris, 1981).…”

Section: Vicariance Biogeographymentioning

confidence: 99%

A critique of traditional approaches to seaweed distribution in light of the development of vicariance biogeography

Garbary

1987

Helgolander Meeresunters

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An overview of the primary approaches to seaweed biogeography is provided in light of the development of vicariance biogeography. Each approach is discussed with particular regard to the extent to which the methods and objectives are compatible with vicafiance. Ecological biogeography is considered an offshoot of ecology and physiology and is more appropriate in determining current distributions of organisms and aspects of physiological ecology rather than the spedation history of monophyletic groups. The R/P quotient of Feldmann and distribution of algal life-forms do not fall within the aegis of vicariance and are considered useful only in a descriptive sense. The examination of seaweed spans propounded by Pielou is considered flawed because of the lack of dependence on monophyletic groups. The floristic school of analysis of many seaweed biogeographers is analagous to the panhiogeography of Croizat, and provides the basis for the more concrete phylogenetic hypotheses that are the basis for vicariance analysis. The latter is considered the best methodology for studying the relationship between patterns of cladogenesis and the distribution of constituent taxa.

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“…That is, due to their morphological plasticity and interfertility, taxonomic delineations of several kelp species have been confusing (Chapman, 1974;Mathieson et al, 1980;Yarish et al, 1990). Recent interfertility studies have demonstrated that interspecific and possibly intergeneric hybridization may occur (Ltining et al, 1978;Mathieson et al, 1981;Bolton etal., 1983;Innes, 1984;Egan et al, 1989;Neushul, 1989). For example, Cosson & Olivari (1982) describe interspecific hybrids of Laminaria digitata with L. saccharina and L. ochroleuca and between each of these and Saccorhiza polyschides.…”

Section: Introductionmentioning

confidence: 99%

“…Blair etal. (1982), Innes (1984Innes ( , 1987, and Innes & Yarish (1984) investigated genetic variation between species of green algae, while Cheney and Babbel (1978) and Cheney & Mathieson (1979) examined species of red algae. Marsden etal.…”

Section: Introductionmentioning

confidence: 99%

An examination of the population genetics of Laminaria and other brown algae in the laminariales using starch gel electrophoresis

et al. 1993

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While some investigators have attempted to use isozyme electrophoresis to gain information on the genetics of brown algae, most have reported unsatisfactory results. Through exhaustive screening and modification of sample preparation techniques, gel and tray buffers systems, plus staining recipes, we have developed procedures that consistently provide scorable bands for over 20 enzyme systems in several laminarian algae. We have used our procedures to examine geographically diverse populations of Laminaria saccharina and L. longicruris, as well as L. digitata, L. groenlandica, Agarum cribrosum, Alaria esculenta, Chorda tomentosa, and Macrocystispyrifera. Overall, these kelp species seem to have an extremely low degree of enzyme polymorphism, both within and between populations. While some 'rare alleles' occurred in several enzyme systems, only 3-5 loci were found to be polymorphic. Our results are consistent with the few reported studies that have used molecular genetic techniques to look at the intraspecific variability of laminarian algae. We suggest that at the species level the Laminariales, and perhaps other groups of brown algae, are genetically extremely conservative as compared to other divisions of plants. We further suggest that isozyme electrophoresis provides a quick and useful tool for algal population genetic studies.

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Genetic differentiation among populations of marine algae

Cited by 40 publications

References 48 publications

Analysis of photosynthetic pigments and chlorophyll fluorescence characteristics of different strains of Porphyra yezoensis

Analysis of photosynthetic pigments and chlorophyll fluorescence characteristics of different strains of Porphyra yezoensis

A critique of traditional approaches to seaweed distribution in light of the development of vicariance biogeography

An examination of the population genetics of Laminaria and other brown algae in the laminariales using starch gel electrophoresis

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