Phylogeny and Biogeography of <i>Tsuga</i> (Pinaceae) Inferred from Nuclear Ribosomal ITS and Chloroplast DNA Sequence Data

Havill, Nathan P.; Campbell, Christopher S.; Vining, Thomas F.; LePage, Ben A.; Bayer, Randall J.; Donoghue, Michael J.; Lavin, Matt

doi:10.1600/036364408785679770

Cited by 73 publications

(63 citation statements)

References 78 publications

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“…ITS2 sequences of A. veitchii were obtained using the newly designed primer P5.8S, and exhibited complete identity (208/208; 100%) to that of A. veitchii sequence EF063713 (Xiang et al 2009). ITS2 sequencing was also used to confirm T. diversifolia, with complete identity (206/206; 100%) to that of T. diversifolia sequence EF395494 (Havill et al 2008).…”

Section: Identification Of Mycorrhizal Root Tips In Both Symbionts Anmentioning

confidence: 99%

Ectomycorrhization of Tricholoma matsutake with Abies veitchii and Tsuga diversifolia in the subalpine forests of Japan

et al. 2015

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Matsutake mushroom Mycorrhizal isolationNuclear ribosomal RNA gene (rDNA) IGS1 region a b s t r a c t Tricholoma matsutake is one of the most highly valued ectomycorrhizal mushrooms, primarily associated with conifers. Here, we examined the association of T. matsutake with hemlock and fir species native to the subalpine forests of Japan. Basidiomata of T. matsutake were harvested from the forests of Honshu Island, Japan, along with two soil samples directly beneath the basidiomata; ectomycorrhizal root tips were also collected, and used for fungal isolation and molecular analyses. Mycorrhizal fungi were isolated from the roots of Abies veitchii (Veitch's fir) and Tsuga diversifolia (northern Japanese hemlock). These fungi were identified as T. matsutake based upon their production of whitish mycelial colonies on nutrient agar media, and confirmed using molecular analyses; the ectomycorrhizal association between T. matsutake and A. veitchii was also confirmed by mycorrhizal synthesis in vitro. This work represents the first description of T. matsutake ectomycorrhizations withAbies and Tsuga species, as well as a detailed morphological description of these associations. /locate /m yc m y c o s c i e n c e 5 6 ( 2 0 1 5 ) 4 0 2 e4 1 2 http://dx.

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Section: Identification Of Mycorrhizal Root Tips In Both Symbionts Anmentioning

confidence: 99%

Ectomycorrhization of Tricholoma matsutake with Abies veitchii and Tsuga diversifolia in the subalpine forests of Japan

et al. 2015

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“…The increase in Tsuga pollen is of particular interest since this genus, particularly Tsuga heterophylla, can tolerate cool climates, but needs humidity and cannot tolerate persistent drought (e.g. Havill et al, 2008).…”

Section: Oligocene/miocene Transition (Late Chattian/earlymentioning

confidence: 99%

Late Eocene to middle Miocene (33 to 13 million years ago) vegetation and climate development on the North American Atlantic Coastal Plain (IODP Expedition 313, Site M0027)

Kotthoff¹,

Greenwood

McCarthy

et al. 2014

Clim. Past

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Abstract.We investigated the palynology of sediment cores from Site M0027 of IODP (Integrated Ocean Drilling Program) Expedition 313 on the New Jersey shallow shelf to examine vegetation and climate dynamics on the east coast of North America between 33 and 13 million years ago and to assess the impact of over-regional climate events on the region. Palynological results are complemented with pollenbased quantitative climate reconstructions. Our results indicate that the hinterland vegetation of the New Jersey shelf was characterized by oak-hickory forests in the lowlands and conifer-dominated vegetation in the highlands from the early Oligocene to the middle Miocene. The Oligocene witnessed several expansions of conifer forest, probably related to cooling events. The pollen-based climate data imply an increase in annual temperatures from ∼ 11.5 • C to more than 16 • C during the Oligocene.The Mi-1 cooling event at the onset of the Miocene is reflected by an expansion of conifers and mean annual temperature decrease of ∼ 4 • C, from ∼ 16 • C to ∼ 12 • C around 23 million years before present. Relatively low annual temperatures are also recorded for several samples during an interval around ∼ 20 million years before present, which may reflect the Mi-1a and the Mi-1aa cooling events. Generally, the Miocene ecosystem and climate conditions were very similar to those of the Oligocene. Miocene grasslands, as known from other areas in the USA during that time period, are not evident for the hinterland of the New Jersey shelf, possibly reflecting moisture from the proto-Gulf Stream.The palaeovegetation data reveal stable conditions during the mid-Miocene climatic optimum at ∼ 15 million years before present, with only a minor increase in deciduousevergreen mixed forest taxa and a decrease in swamp forest taxa. Pollen-based annual temperature reconstructions show average annual temperatures of ∼ 14 • C during the midMiocene climatic optimum, ∼ 2 • C higher than today, but ∼ 1.5 • C lower than preceding and following phases of the Miocene. We conclude that vegetation and regional climate in the hinterland of the New Jersey shelf did not react as sensitively to Oligocene and Miocene climate changes as other regions in North America or Europe due to the moderating effects of the North Atlantic. An additional explanation for the relatively low regional temperatures reconstructed for the mid-Miocene climatic optimum could be an uplift of the Appalachian Mountains during the Miocene, which would also have influenced the catchment area of our pollen record.

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“…Havill et al (2008) reconstructed the phylogeny of Tsuga using ITS and cpDNA sequences. The analysis resolved a clade that includes the two western North American species, Tsuga heterophylla and Tsuga mertensiana, and a clade of Asian species within which one of the eastern North American species, Tsuga caroliana, is nested.…”

Section: Tsuga Phylogenymentioning

confidence: 99%

Karyotype evolution in the Pinaceae: implication with molecular phylogeny

Nkongolo

Mehes-Smith

2012

Genome

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The family Pinaceae is made up mostly of diploid species (2n = 24). Systematization of karyotype analysis was developed to make comparison of intra- and interspecific karyotypes among the Pinaceae more accurate and reliable. Considering all parameters, the genera Pseudotsuga and Pseudolarix have the "most derived" (or advanced) and asymmetric karyotypes in the Pinaceae, followed by Larix, Picea, Abies, and Cedrus. The genus Pinus was the "least derived" (or ancestral) of all the genera of the Pinaceae analyzed. Differences in karyotype formulae and asymmetry indices were found among species within the same genera, suggesting that structural changes may have contributed to the diversification of the genus. This review is a detailed analysis of comparative karyotyping based on similar parameters, including numeric data and cytogenetic information. Telomeric sequence repeats and rDNA distribution in the Pinaceae were surveyed. The role of transposition in rDNA chromosome distribution is analyzed. Cytogenetic implications of hybridization between related species are reported. Likewise, the relationships between molecular phylogenetic and karyotype evolution is discussed in light of several reports. Within many genera, chromosomal organization was conserved despite independent molecular divergence and adaptation through the evolutionary history of the species of the Pinaceae.

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Phylogeny and Biogeography of Tsuga (Pinaceae) Inferred from Nuclear Ribosomal ITS and Chloroplast DNA Sequence Data

Cited by 73 publications

References 78 publications

Ectomycorrhization of Tricholoma matsutake with Abies veitchii and Tsuga diversifolia in the subalpine forests of Japan

Ectomycorrhization of Tricholoma matsutake with Abies veitchii and Tsuga diversifolia in the subalpine forests of Japan

Late Eocene to middle Miocene (33 to 13 million years ago) vegetation and climate development on the North American Atlantic Coastal Plain (IODP Expedition 313, Site M0027)

Karyotype evolution in the Pinaceae: implication with molecular phylogeny

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