PATTERNS AND LEVELS OF GENETIC VARIATION IN GREAT BASIN BRISTLECONE PINE,
            <i>PINUS LONGAEVA</i>

Hiebert, Ronald D.; Hamrick, J. L.

doi:10.1111/j.1558-5646.1983.tb05540.x

Cited by 56 publications

(28 citation statements)

References 10 publications

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“…Genetic diversity at the population level (H ep ϭ 0.134) was very similar to the average for other pine species (H ep ϭ 0.136; Hamrick, Godt, and Sherman-Broyles, 1992). However, genetic variation of the eastern Great Basin bristlecone pine was substantially greater (Hiebert and Hamrick, 1983;Hamrick, Schnabel, and Wells, 1994). Foxtail pine (Pinus balfouriana Grev.…”

Section: Discussionmentioning

confidence: 81%

“…Population differentiation (G ST ) for RAPDs was more than three times greater than that observed for allozymes (Table 4), Note: Data as follows: Pinus longaeva from the eastern Great Basin (Hiebert and Hamrick, 1983); P. longaeva from the western Rocky Mountains in Utah and from montane islands in the Great Basin (Hamrick, Schnabel, and Wells, 1994); P. aristata and P. balfouriana (unpublished data from Hiebert and Hamrick, 1983); P. attenuata, P. radiata, and P. muricata (Wu, Krutovskii, and Strauss, 1999); P. sylvestris (Szmidt, Wang, and Lu, 1996); P. densiflora (Lee et al, 1997); Pseudotsuga menziesii (Aagaard, Krutovskii, and Strauss, 1998); Picea mariana (Isabel, Beaulieu, and Bousquet, 1995).…”

Section: Comparison Between Allozymes and Rapds-mentioning

confidence: 93%

“…Great Basin bristlecone pine (Pinus longaeva Bailey) would be an especially interesting species for such a comparison because estimates of genetic diversity in the species are the highest ever reported in the well-studied genus Pinus (Hiebert and Hamrick, 1983;Ledig, 1998). Furthermore, genetic diversity of bristlecone pine in the White Mountains, at the western extreme of the species' range ( Fig.…”

mentioning

confidence: 99%

“…Hiebert and Hamrick (1983) studied genetic variation of bristlecone pine in the eastern Great Basin and the western Colorado Plateau (Nevada and Utah), employing allozyme markers. Expected heterozygosity (H e ) was 0.327 and total genetic diversity (H T ) within the range that they sampled was 0.484, well above the average range of values reported for other pines (Ledig, 1998).…”

mentioning

confidence: 99%

“…Great Basin bristlecone pine is a species believed to have high variability (Hiebert and Hamrick, 1983). Hiebert and Hamrick (1983) studied genetic variation of bristlecone pine in the eastern Great Basin and the western Colorado Plateau (Nevada and Utah), employing allozyme markers.…”

mentioning

confidence: 99%

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Genetic variation at allozyme and RAPD markers in Pinus longaeva (Pinaceae) of the White Mountains, California

Lee

Ledig

Johnson

2002

American J of Botany

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We compared genetic diversity estimated from allozymes and from random amplified polymorphic DNA (RAPDs) in a sample of 210 Great Basin bristlecone pines (Pinus longaeva Bailey) from three groves in the White Mountains, California, USA. The White Mountains are the most westerly extension of bristlecone pine and home to the oldest known living trees. We assayed two forks of each tree to determine whether they originated from multiple seed caches of the Clark's nutcracker. Despite the limited and fragmented distribution of bristlecone pine, its level of genetic diversity was comparable to that of other pines, but lower than that reported for eastern populations of Great Basin bristlecone pine. Twenty-six of 36 allozymes were polymorphic (p(95) = 38.9%; p = 63.0%), with observed heterozygosity (H(o)) of 0.122 and expected heterozygosity (H(e)) of 0.134. The proportion of the total variation among populations (G(ST)) was only 0.011. The high proportion of trees with multiple stems was not due to germination in seed caches; only six of 210 forked trees had multiple allozyme genotypes. Of the 42 RAPD loci scored, 27 were monomorphic. Genetic diversity for RAPDs was nearly the same as that for allozymes (p(95) = 34.1%, H(e) = 0.130). However, the estimates of diversity and differentiation were much higher (H(e) = 0.321, G(ST) = 0.039) after excluding monomorphic loci.

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Section: Discussionmentioning

confidence: 81%

Section: Comparison Between Allozymes and Rapds-mentioning

confidence: 93%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Genetic variation at allozyme and RAPD markers in Pinus longaeva (Pinaceae) of the White Mountains, California

Lee

Ledig

Johnson

2002

American J of Botany

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Pines

Tang

Newton

2008

Compendium of Transgenic Crop Plants

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Transgenic plants play an important role in plant productivity and in a variety of biotic and abiotic stresses including drought, low/high temperatures, high salinity, and oxidative stress. Changes in gene expression patterns ultimately influence biochemical, cellular, developmental, and physiological activities. Transgenic pine is critical in improving wood production and in forest biotechnology. In this chapter, we overview the transgenic pine and its application in forest biotechnology, in forest industry, and in environmental improvement with emphasis on the history, origin, and distribution of Loblolly pine ( Pinus taeda L.), Scots pine ( Pinus sylvestris L.), and Monterey pine ( Pinus radiata D. Don).

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Genetic Diversity and Population Structure in Camellia Japonica L. (Theaceae)

Wendel

Parks

1985

American J of Botany

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Camellia japonica is a widespread and morphologically diverse tree native to parts of Japan and adjacent islands. Starch gel electrophoresis was used to score allelic variation at 20 loci in seeds collected from 60 populations distributed throughout the species range. In comparison with other plant species, the level of genetic diversity within C. japonica populations is very high: 66.2% of loci were polymorphic on average per population, with a mean number of 2.16 alleles per locus; the mean observed and panmictic heterozygosities were 0.230 and 0.265, respectively. Genotypic proportions at most loci in most populations fit Hardy‐Weinberg expectations. However, small heterozygote deficiencies were commonly observed (mean population fixation index = 0.129). It is suggested that the most likely cause of the observed deficiencies is population subdivision into genetically divergent subpopulations. The overall level of population differentiation is greater than is typically observed in out‐breeders: The mean genetic distance and identity (Nei's D and I) between pairs of populations were 0.073 and 0.930, respectively, and Wright's Fst was 0.144. Differences among populations appeared to be manifested as variation in gene frequencies at many loci rather than variation in allelic composition per se. However, the patterns of variation were not random. Reciprocal clinal variation of gene frequencies was observed for allele pairs at six loci. In addition, principal components analysis revealed that populations tended to genetically cluster into four regions representing the geographic areas Kyushu, Shikoku, western Honshu, and eastern Honshu. There was a significant relationship between genetic and geographic distance (r = 0.61; P < 0.01). Analysis of variance on allozyme frequencies showed that there was approximately four times as much differentiation among populations within regions, as among regions. It is likely that the observed patterns of population relationships result from the balance between genetic drift in small subpopulations and gene flow between them.

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PATTERNS AND LEVELS OF GENETIC VARIATION IN GREAT BASIN BRISTLECONE PINE, PINUS LONGAEVA

Cited by 56 publications

References 10 publications

Genetic variation at allozyme and RAPD markers in Pinus longaeva (Pinaceae) of the White Mountains, California

Genetic variation at allozyme and RAPD markers in Pinus longaeva (Pinaceae) of the White Mountains, California

Pines

Genetic Diversity and Population Structure in Camellia Japonica L. (Theaceae)

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