Evolutionary relationships of the New Caledonian heterotrophic conifer, Parasitaxus usta (Podocarpaceae), inferred from chloroplast trn L-F intron/spacer and nuclear rDNA ITS2 sequences

Sinclair, William; Mill, R. R.; Gardner, Martin; Woltz, P.; Jaffré, Tanguy; Preston, Jill C.; Hollingsworth, Michelle L.; Ponge, A.; Möller, Michael

doi:10.1007/s00606-002-0199-8

Cited by 75 publications

(66 citation statements)

References 47 publications

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“…: 72 (1904 19 genera, ca 180 species, Tropical African mountains, Japan to Australia and New Zealand, SW Pacific, South America, Central America, Caribbean Islands. Phylogenetic analyses followed here are those of Kelch (1997Kelch ( , 1998, Conran et al (2000) and Sinclair et al (2002 Arbor. 34: 25 (1953 Hao et al (2008).…”

Section: Introductionmentioning

confidence: 99%

A new classification and linear sequence of extant gymnosperms

Christenhusz¹,

Reveal²,

Farjon³

et al. 2011

Phytotaxa

425

239

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A new classification and linear sequence of the gymnosperms based on previous molecular and morphological phylogenetic and other studies is presented. Currently accepted genera are listed for each family and arranged according to their (probable) phylogenetic position. A full synonymy is provided, and types are listed for accepted genera. An index to genera assists in easy access to synonymy and family placement of genera.

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Section: Introductionmentioning

confidence: 99%

A new classification and linear sequence of extant gymnosperms

Christenhusz¹,

Reveal²,

Farjon³

et al. 2011

Phytotaxa

425

239

View full text Add to dashboard Cite

show abstract

“…(2000), Quinn et al. (2002), Sinclair et al. (2002) and Kelch (2002) support Quinn's view; all place Phyllocladus in a well‐supported clade comprising Podocarpaceae, but these studies conflict with regard to its relationships within the family.…”

Section: Introductionmentioning

confidence: 92%

“…, 2002). In contrast the ITS sequences were more variable, but difficult to confidently align to putative outgroups, and to date only the ITS‐2 region has been compared (Sinclair et al. , 2002).…”

Section: Study Groupmentioning

confidence: 99%

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Evolution and biogeography of the austral genusPhyllocladus(Podocarpaceae)

Wagstaff

2004

Journal of Biogeography

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Aim To infer evolutionary relationships within the genus Phyllocladus and among its close relatives by phylogenetic analysis of DNA sequences. Interpret the inferred relationships in association with the fossil record to examine the origin and diversification of the genus. Location Australasia. Methods Phylogenetic analyses of rbcL, matK and internal transcribed spacer (ITS) sequences representing all of the extant species of Phyllocladus and a selection of outgroups from Podocarpaceae and Araucariaceae. Results The rbcL and matK sequences exhibit little variation within Phyllocladus, but ally its members to Podocarpaceae although its immediate sister remains unclear. The ITS sequences resolve all five species of Phyllocladus and two intraspecific ecotypes of P. alpinus. Main conclusions Phyllocladus forms a distinct lineage that diverged early in the evolutionary history of Podocarpaceae. The fossil record indicates that the genus was more widely distributed and morphologically diverse during the early Tertiary than at present. Although of Mesozoic origin, the level of sequence variation within Phyllocladus suggests that the extant species radiated during the late Tertiary c. 6.3 ± 0.9 Ma. New Zealand is the present centre of species diversity.

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“…Within land plants, parasitic or non‐photosynthetic life histories have evolved independently at least 11 times (Nickrent et al ., 1998). However, heterotrophy of the dominant generation is found only twice outside of the angiosperms: Parasitaxus ustus (Viellard) de Laubenfels, a conifer (Sinclair et al ., 2002), and in the bryophyte genus Cryptothallus (Malmborg, 1933). The latter is the only land plant with a dominant non‐photosynthetic haploid generation (Brundrett, 2002; Bidartondo, 2005) and, unlike the gametophytes of some ferns, the achlorophyllous liverwort does not have an independent photosynthetic generation.…”

Section: Introductionmentioning

confidence: 99%

Origin and relationships of the myco-heterotrophic liverwort Cryptothallus mirabilis Malmb. (Metzgeriales, Marchantiophyta)

Wickett

Goffinet

2008

Botanical Journal of the Linnean Society

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Heterotrophic life histories have evolved independently numerous times in the angiosperms. In non-vascular embryophytes, heterotrophy is known only in the genus Cryptothallus. Cryptothallus mirabilis obtains photosynthates indirectly from a host tree via a basidiomycete that is simultaneously ectomycorrhizal on the host, a strategy known as myco-heterotrophism. This simple thalloid liverwort was initially described as an albino variant of Aneura pinguis, and the literature varies on whether it should be considered as such, as a distinct species of Aneura, or as a separate genus. Here, the relationships of C. mirabilis within the family Aneuraceae are reconstructed using DNA sequence data from the chloroplast (rps4, rps14, atpB-rbcL spacer, trnG), mitochondrial (trnS), and nuclear (26S and ITS) genomes. Several allopatric populations of C. mirabilis and of both sympatric species of Aneura (i.e. A. pinguis and A. maxima) were included. Cryptothallus mirabilis is resolved as having a single origin from within Aneura, and hence the myco-heterotrophic liverwort should be considered as a distinct species of Aneura, rather than an autonomous genus. The fungal symbiont of the photosynthetic A. pinguis is of the same genus, Tulasnella, as that of C. mirabilis, suggesting that the heterotrophic life strategy might have evolved from a pre-existing symbiosis.

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Evolutionary relationships of the New Caledonian heterotrophic conifer, Parasitaxus usta (Podocarpaceae), inferred from chloroplast trn L-F intron/spacer and nuclear rDNA ITS2 sequences

Cited by 75 publications

References 47 publications

A new classification and linear sequence of extant gymnosperms

A new classification and linear sequence of extant gymnosperms

Evolution and biogeography of the austral genusPhyllocladus(Podocarpaceae)

Origin and relationships of the myco-heterotrophic liverwort Cryptothallus mirabilis Malmb. (Metzgeriales, Marchantiophyta)

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