Reproductive patterns of Caloglossa species (Delesseriaceae, Rhodophyta) from Australia and New Zealand: multiple origins of asexuality in C. leprieurii. Literature review on apomixis, mixed-phase, bisexuality and sexual compatibility

West, John A.; Zuccarello, Giuseppe C.; Kamiya, Mitsunobu

doi:10.1111/j.1440-1835.2001.tb00249.x

Cited by 27 publications

(19 citation statements)

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“…West et al (1994) established many culture strains of Caloglossa leprieurii from Pacific Mexico and found that many populations are composed of asexual specimens, which lack the sexual stage and reproduce only by spores, though these asexual strains show similar morphological and physiological features of the normal sexual strains of C. leprieurii. Recently, additional asexual strains have been isolated from Atlantic USA, French Guiana, Malaysia and eastern and southern Australia (West et al 2001;West, unpublished data). The morphological analyses revealed that the asexual specimens from Pacific Mexico, Atlantic USA, French Guiana, Malaysia and eastern Australia were identical to the multiple/broad type, and those from southern Australia were identical to the single/broad type.…”

Section: Morphology Life Cycle and Distributionmentioning

confidence: 99%

“…Results of the hybridization experiments. + F 1 sporophytes and subsequent F 1 gametophytes were fertile (shaded); +° F 1 sporophytes were fertile but subsequent F 1 gametophytes were not viable; +* F 1 sporophytes were not viable; -* pseudocystocarps were produced; -no reproduction occurred; blank no data among closely related species, so these regions were sequenced on the 30 specimens of the Caloglossa leprieurii complex collected worldwide (Kamiya et al 1998;West et al 2001). The molecular phylogenetic data showed that the C. leprieurii complex is divided into two groups, which morphologically correspond to the single cell row and the multiple cell row type, respectively, and that the multiple/ slender type was derived from the western Pacific populations of the multiple/broad type (Fig.…”

Section: Molecular Phylogenymentioning

confidence: 99%

“…8; West et al 2001;Kamiya et al 2003). This means that an asexualization event has happened at least three times in the Caloglossa leprieurii complex lineage.…”

Section: Molecular Phylogenymentioning

confidence: 99%

“…These asexual strains usually produce viable bispores (i.e., apomictic spores) instead of tetraspores (i.e., meiospores), and these bispores develop into diploid sporophytes, not haploid gametophytes (West et al 1994). Such an asexual life cycle has been observed in various red algae (West et al 2001), but the mechanism to generate apomictic spores is still unknown. The asexual populations from Pacific Mexico and southern Australia are located at the end of the proximal populations of the normal sexual plants, creating an alternative life cycle (Fig.…”

Section: Molecular Phylogenymentioning

confidence: 99%

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Speciation and biogeography of the Caloglossa leprieurii complex (Delesseriaceae, Rhodophyta)

Kamiya

2004

J Plant Res

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Studies on the morphology, reproductive compatibility, life cycle and molecular phylogeny of the euryhaline red alga Caloglossa provide insights into the speciation events and biogeographic patterns. The C. leprieurii complex is separated into three morphotypes based on the number of cell rows at nodes and the blade width. The three morphotypes are reproductively incompatible with each other, and furthermore many mating groups are recognized within the morphotypes. Incomplete reproductive isolation is occasionally seen between geographically distant mating groups, whereas no sexual compatibility occurs between sympatrically or parapatrically distributed mating groups. In the molecular phylogenetic analyses, the C. leprieurii complex is resolved as two clusters that phenotypically correspond to the single and multiple cell row types, respectively. The strains belonging to the same mating group are closely related to each other, without exception, while the mating groups showing incomplete reproductive reactions do not always make a clade. The genetic distance is generally not correlative to the geographic distance, and this is also suggested by the morphological data and crossability. These results indicate that allopatric speciation has frequently occurred in this species complex, although there is some evidence of long-distance dispersal.

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Section: Morphology Life Cycle and Distributionmentioning

confidence: 99%

Section: Molecular Phylogenymentioning

confidence: 99%

“…8; West et al 2001;Kamiya et al 2003). This means that an asexualization event has happened at least three times in the Caloglossa leprieurii complex lineage.…”

Section: Molecular Phylogenymentioning

confidence: 99%

Section: Molecular Phylogenymentioning

confidence: 99%

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Speciation and biogeography of the Caloglossa leprieurii complex (Delesseriaceae, Rhodophyta)

Kamiya

2004

J Plant Res

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“…by less favourable abiotic conditions and lower species diversity) than their sexual counterparts (Stebbins 1950, 1971; Grant 1983; Lynch 1984; Bierzychudek 1985; Haag & Ebert 2004; Kearny 2005) but in other red algae (e.g. Bostrychia moritziana , Caloglossa leprieurii ) such patterns are more difficult to discern (West & Zuccarello 1999; West et al 2001; Kamiya & West 2008). Nevertheless, these algae similarly show geographic separation of sexual and asexual life cycle variants.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution and reproductive phenology of sexual and asexualMastocarpus papillatus(Rhodophyta)

2010

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Species of the genus Mastocarpus exhibit two distinct life cycles, a sexual alternation of generations and an obligate, asexual direct life cycle that produces only female upright fronds. In the intertidal red alga, M. papillatus (Kützing) sexual fronds dominate southern populations and asexual fronds dominate northern populations along the northeast Pacific coast, a pattern of spatial separation called geographic parthenogenesis. Along the central coast of California, sexual and asexual variants occur in mixed populations, but it is not known whether they are spatially separated within the intertidal zone at a given site. We investigated reproductive phenologies and analyzed patterns of spatial distributions of sexual and asexual M. papillatus at three sites in this region. Sexual M. papillatus were aggregated lower on the shore at two sites and only reproduced during part of a year, while asexual M. papillatus occurred throughout the intertidal range at all sites and reproduced throughout the year. The distribution patterns of sexual and asexual M. papillatus are consistent with a hypothesis of shoreline topography influencing their dynamics of dispersal and colonization. Spatial and temporal partitioning may contribute to the long-term coexistence of sexual and asexual life histories in this, and other, species of Mastocarpus. The occurrence of geographic parthenogenesis at multiple spatial scales in M. papillatus provides an opportunity to gain insight into the phenomenon.

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Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

Maneiro

Couceiro

Bárbara

et al. 2011

Aquatic Conserv: Mar. Freshw. Ecosyst.

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ABSTRACT1. Marine macroalgae are rarely considered from the point of view of conservation and the assessment of their conservation status is often limited by a lack of appropriate data. The red algae Grateloupia lanceola is a common inhabitant of Atlantic rocky shores along West Africa that also occurs in a small number of enclaves in the north-west Iberian Peninsula (NWIP).2. NWIP populations are notoriously separated from the main range of the species, and were proposed as candidates for inclusion in the regional list of species of conservation concern.3. In an attempt to provide further information to assess the status of these populations, amplified fragment length polymorphism (AFLP) and mitochondrial cytochrome oxidase subunit 2 and subunit 3 gene (cox2-3) sequences were used to investigate their genetic structure in the Iberian Peninsula. In contrast with the absence of variation in the cox2-3 region, AFLP revealed significant genetic differentiation and a clear isolation by distance pattern for samples separated by 100 s to 1000 km along Iberian shores.4. Together with assignment/exclusion tests, these results suggest that G. lanceola has geographically restricted dispersal, and indicate that NWIP sites are probably demographically isolated from other conspecifics. Therefore, it would be a mistake, from a conservation perspective, to assume that these populations may be subsidized by arrivals from distant populations located within the main range of the species.5. On a regional scale, most NWIP sites cluster into a single genetic unit with low genetic variation. Altogether, these results support the listing of NWIP populations of G. lanceola as vulnerable.

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Reproductive patterns of Caloglossa species (Delesseriaceae, Rhodophyta) from Australia and New Zealand: multiple origins of asexuality in C. leprieurii. Literature review on apomixis, mixed-phase, bisexuality and sexual compatibility

Cited by 27 publications

References 66 publications

Speciation and biogeography of the Caloglossa leprieurii complex (Delesseriaceae, Rhodophyta)

Speciation and biogeography of the Caloglossa leprieurii complex (Delesseriaceae, Rhodophyta)

Spatial distribution and reproductive phenology of sexual and asexualMastocarpus papillatus(Rhodophyta)

Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

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