Pinus taeda | definition of Pinus taeda by Medical dictionary
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Exome Genotyping and Association Genetics of Quantitative Traits in a Clonally Tested Loblolly Pine Population (Pinus taeda L.)
Loblolly pine (Pinus taeda L.) is one of the most widely planted and commercially important forest tree species in the USA and worldwide. However, whole genome resequencing in loblolly pine is hampered by its size and complexity. Additionally, the genetics underlying quantitative traits of loblolly pine remains to be discovered. As a valid and more feasible alternative, entire exome sequencing was hence employed to identify the gene-associated single nucleotide polymorphisms (SNPs) and to genotype the 375 tress in a clonally tested loblolly pine population. Adaptive and growth traits were also measured and analyzed on this population. The exome capture efficiency was high. A total of 972,720 high quality SNPs were identified after filtering. We found that linkage disequilibrium (LD) decayed very rapidly within this population. Two main distinct clusters representing western and eastern parts of the loblolly pine range were demonstrated by the population structure analysis ...http://oaktrust.library.tamu.edu/handle/1969.1/158662
Loblolly Pine (Pinus taeda L.) Contains Multiple Expressed Genes Encoding Light-Dependent NADPH:Protochlorophyllide...
NADPH:protochlorophyllide oxidoreductase (POR) catalyzes the light-dependent reduction of protochlorophyllide (Pchlide) to chlorophyllide (Chlide), a key regulatory step in chlorophyll biosynthesis. In most angiosperms, POR is encoded by a small nuclear gene family, containing at least two differentially-expressed genes designated porA and porB. We have demonstrated that the PORs of loblolly pine (Pinus taeda L.), a gymnosperm, are encoded by a large multigene family, composed of two distinct subfamilies encoding porA and porB genes similar to those previously described in angiosperms. DNA gel blot analysis of genomic DNA showed that the two por subfamilies of loblolly pine have duplicated at different rates, with the porA subfamily containing two members, and the porB subfamily containing at least 11 potential members. DNA sequence analysis and gel blot hybridization studies also showed that a subset of the por genes present in the loblolly pine genome are pseudogenes. ...http://oxfordindex.oup.com/view/10.1093/oxfordjournals.pcp.a029437
Elevated CO2 increases root exudation from loblolly pine (Pinus taeda L.) seedlings as an N-mediated response
The degree to which forest ecosystems provide a long-term sink for increasing atmospheric CO2 depends upon the capacity of trees to increase the availability of growth-limiting resources. It has been widely speculated that trees exposed to CO2 enrichment may increase the release of root exudates to soil as a mechanism to stimulate microbes to enhance nutrient availability. As a first test to examine how the atmospheric CO2 and nitrogen availability affect the rates of root exudation, we performed two experiments in which the exudates were collected from loblolly pine (Pinus taeda L.) seedlings that were grown in controlled growth chambers under low and high CO2 and at low and high rates of N supply. Despite the differences in experimental design between the two studies, plants grown at high CO2 were larger, and thus whole plant exudation rates were higher under elevated CO2 (P = 0.019), but the magnitude of this response depended on the N level in both studies. Seedlings ...https://scholarworks.iu.edu/dspace/handle/2022/14322?show=full
Avaliação genética de clones de Pinus taeda propagados via embriogênese somática
Objetivou-se com o presente trabalho, realizar a avaliação genética de Pinus taeda propagado por embriogênese somática implantado em teste clonal. De forma específica, objetivou-se estimar a correlação genética entre idades de seleção (juvenil-adulta), eficiência da seleção precoce para as características altura, diâmetro e volume, eficiência da embriogênese somática na propagação de genótipos com bons ganhos de seleção e avaliar a capacidade de propagação de famílias de Pinus taeda por embriogênese somática, utilizando estimativas de parâmetros genéticos. O estudo foi realizado por meio de análise genético-estatística de uma rede experimental de clones de Pinus taeda, composta por 238 clones propagados via embriogênese somática. Os dados dos caracteres diâmetro(dap), altura total, volume e sobrevivência foram obtidos nas idades de 1, 3 e 4 anos, em quatro testes clonais, sendo dois localizados no Estado do ...http://www.locus.ufv.br/handle/123456789/592
An annotated consensus genetic map for Pinus taeda L. and extent of linkage disequilibrium in three genotype-phenotype...
An annotated consensus genetic map for Pinus taeda L. and extent of linkage disequilibrium in three genotype-phenotype discovery populations Jared W. Westbrook, Vikram E. Chhatre, Le-Shin Wu, Srikar Chamala, Leandro Gomide Neves, Patricio Muñoz, Pedro J Martínez-García, David B. Neale, Matias Kirst, Keithanne Mockaitis, C. Dana Nelson, Gary F. Peter, John M. Davis, Craig S.…https://haldanessieve.org/2014/12/15/an-annotated-consensus-genetic-map-for-pinus-taeda-l-and-extent-of-linkage-disequilibrium-in-three-genotype-phenotype-discovery-populations/
Loopstra, Carol | ESSM | Ecosystem Science & Management Department | Texas A&M University
Association Genetics of Natural Genetic Variation and Complex Traits in Pine. 2005 - 2009. NSF Plant Genome.. Wood formation in loblolly pine. 1999-2003. NSF Plant Genome. PI: Ronald Sederoff, NCSU. Arabinogalactan-proteins in xylem development of loblolly pine. 1995-1998. USDA National Research Initiative Competitive Grants Program.. Isolation of a xylem cellulose synthase gene from poplar. 1998. Texas A&M University Faculty Mini-Grant Program. Publications :. Palle SR, Seeve CM, Eckert AJ, Wegrzyn JL, Neale DB, Loopstra CA. (2013) Association of loblolly pine xylem development gene expression with single nucleotide polymorphisms. Tree Physiology (in press). Palle SR, Seeve CM, Eckert AJ, Cumbie WP, Goldfarb B, and Loopstra CA. (2011) Natural variation in expression of genes involved in xylem development in loblolly pine (Pinus taeda L.). Tree Genetics and Genomes 7: 193-206. Yang SH and Loopstra CA. (2005) Seasonal variation in gene expression for loblolly pines ...https://essm.tamu.edu/people/faculty/loopstra-carol/
Biblioteca Florestal - Organogênese direta de Pinus taeda L.
O objetivo deste trabalho foi estabelecer um protocolo de micropropagação para Pinus taeda, pelas técnicas de organogênese direta e multiplicação de gemas axilares. Sementes de famílias selecionadas (F27 e B05) e de pomar comercial, fornecidas pela empresa Battistella Florestal (Rio Negrinho - SC) foram submetidas a tratamento de estratificação (5°C 1°C durante 25 dias) para a superação da dormência. Brotações apicais obtidas de plântulas com cinco ou dez dias de germinação foram as fontes de explantes. Para a indução da formação de brotações adventícias e/ou axilares, foram utilizados meio de cultura WV5 com 0, 11, 22 ou 44 M de 6-benzilaminopurina (BAP) combinada com 0,05 M de ácido naftaleno acético (ANA) e meio de cultura WPM com 11 a 44,0 M de BAP e 0; 0,5 ou 0,75 M de ANA durante 14 dias, e subcultivo para meio sem reguladores e WPM. Para a técnica de multiplicação de brotações axilares, utilizaram-se brotações apicais (0,5 a 2,0 cm de ...http://www.bibliotecaflorestal.ufv.br/handle/123456789/17193
A comparison of the community diversity of foliar fungal endophytes between seedling and adult loblolly pines (Pinus taeda). |...
A comparison of the community diversity of foliar fungal endophytes between seedling and adult loblolly pines (Pinus taeda).'s profile, publications, research topics, and co-authorshttps://scholars.duke.edu/display/pub1103028
Post-harvest forest floor manipulation effects on nutrient dynamics in a loblolly pine (Pinus taeda) plantation | RTI
Zerpa, J., Allen, H., McLaughlin, B., Phelan, J., Campbell, R., & Hu, S. (2014). Post-harvest forest floor manipulation effects on nutrient dynamics in a loblolly pine (Pinus taeda) plantation. Canadian Journal of Forest Research ...https://www.rti.org/publication/post-harvest-forest-floor-manipulation-effects-nutrient-dynamics-loblolly-pine-pinus
A comparison of crown attributes for six genotypes on Pinus taeda as affected by site and management intensity
This study was designed to investigate the development of the crown architecture of six genotypes of loblolly pine across a variety of growing conditions, and also to investigate the stability of the crown ideotype for these genotypes over a range of site and silvicultural management regimes. The objectives were to determine whether the crown dimensions that determine the crown ideotype of four clones, a mass-control-pollinated family, and an open-pollinated family of Pinus taeda L. are consistent within their respective genotypes, and to determine whether those same crown dimensions and genotypes follow consistent patterns even when established on different sites with contrasting qualities and different silvicultural regimes. The study was conducted on a 5-year-old plantation with an initial spacing of 1,235 trees per hectare. The plots had not reached crown closure, which provided the opportunity to assess the crown characteristics of individual trees of each genotype and ...https://vtechworks.lib.vt.edu/handle/10919/56963
Bacterias Endófitas de Pinus taeda L. como Agentes de control Biológico de Fusarium circinatum Nirenberg & O'Donnell
To evaluate the antagonist effect of different live bacteria, mycelia plugs from the edges of actively growing fungal cultures were placed in the center of Petri dish containing PDA. Four bacteria isolates were streaked on the same plates at equal distance from the fungal inocula. Plates with the fungal plug without bacteria were used as control. Plates were incubated at 25 °C for 5 d to evaluate the inhibition activity of bacteria on the fungus. Each treatment was replicated five times. The fungal strains used were Fc 2052, Fc2053, Fc2054, and Fc2057. Bacteria strains of Bacillus subtilis used were B1, B2, B3, B4, and one strain of Burkholderia sp. (B5).. Observations of mycelia of the interaction zone between fungi and bacteria were performed under microscope.. The activity of bacteria thermostable metabolites was also evaluated. Liquid cultures of bacteria were performed transferring colonies of each bacterium to a 250 mL Erlenmeyer flask containing 100 mL of potato dextrose broth (PDB) and ...http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200018&lng=es&nrm=iso&tlng=en
Washing Roots Reduces Vigor of Loblolly Pine Seedlings: Ingenta Connect
Loblolly pine (Pinus taeda L.) seedlings were lifted from two nurseries in Georgia, and the roots were washed using equipment built for that purpose. Seedlings then received two levels of storage and were outplanted not far from the nursery of origin (one loam soil and one sandy soil). Immediately after washing, root weights and the length of fine roots did not differ among wash treatments from either nursery. Survival was excellent for all treatments on the loam soil, but a single wash reduced survival by 5 to 10% when seedlings were planted in sand. Washing slowed the rate of budbreak and early height growth. Bud growth of seedlings planted in a stress pit (containing sand) was correlated with both root growth 1 month after planting (r = 0.36, P = 0.0003) and survival 2 months after planting (r = 0.62, P = 0.01). Among seedlings outplanted on a sandy site, initial height growth also correlated with survival (r = 0.49, P = 0.007). South. J. Appl. For. 25(1):25-30 ...http://www.ingentaconnect.com/content/saf/sjaf/2001/00000025/00000001/art00003
About Loblolly pine, Pinus taeda
Uses for this native species include lumber, naval and veneer products as well as pulpwood. While not often used in landscape applications, it does have a pleasant aroma. Most often it is used for shade and as a windbreak. If planting for a windbreak, care should be taken when selecting plants that are container grown. Seedlings that are root bound do not typically develop proper root structures. This problem is compounded by the fast growth rate and can lead to the tree being blown down after a few years. As with all pines, turpentine can be distilled from the resin, which in times past has been used to treat a variety of ailments. Respiratory complaints like coughing, bronchitis, common colds, and influenza were eased by steam baths and inhalers. Skin problems, wounds and sores were also treated with poultices and salves. In the late 1800's, it was even used to treat tuberculosis. ...http://treesforme.com/loblolly_pine.html
Back to nature: ecological genomics of loblolly pine (Pinus taeda, Pinaceae) - ECKERT - 2010 - Molecular Ecology - Wiley Online...
Fig. S1 Visualization of the correlation matrix for 62 climate and geographical variables reveals strong correlations among variables. Labels on the bottom axis denote groups of climate variables, which are listed on the right vertical axis. Single monthly names refer to the aridity index. The image was generated using the HEATMAP function in the base distribution of R (R Development Core Team 2007).. Fig. S2 Scree plots summarizing the application of PCA on 62 climate and geographical variables. (A). Scree plot based upon eigenvalues. (B). Scree plot based on PVE.. Fig. S3 Loadings for PCs 1-10 for 62 climate and geographical variables. Types of variables are differentiated by colour (black: latitude and longitude; blue: minimum monthly temperatures; red: maximum monthly temperatures; orange: monthly aridity index; green: monthly precipitation; yellow: growing-degree days above 5 °C). The PVE is listed for each PC.. Fig. S4 A summary of GO categories nested under the term molecular function ...http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2010.04698.x/full
Effects of Small-Scale Dead Wood Additions on Beetles in Southeastern U.S | Treesearch
Pitfall traps were used to sample beetles (Coleoptera) in plots with or without inputs of dead loblolly pine (Pinus taeda L.) wood at four locations (Louisiana, Mississippi, North Carolina and Texas) on the coastal plain of the southeastern United States. The plots were established in 1998 and sampling took place in 1998, 1999, and 2002 (only 1998 for North Carolina). Overall, beetles were more species rich, abundant and diverse in dead wood addition plots than in reference plots. While these differences were greatest in 1998 and lessened thereafter, they were not found to be significant in 1998 due largely to interactions between location and treatment. Specifically, the results from North Carolina were inconsistent with those from the other three locations. When these data were excluded from the analyses, the differences in overall beetle richness for 1998 became statistically significant. Beetle diversity was significantly higher in the dead wood plots in 1999 but by 2002 ...https://www.fs.usda.gov/treesearch/pubs/41259
Mushroom Observer: Observation 95256: Cronartium quercuum (Berk.) Miyabe ex Shirai
I looked into this issue. According to DISEASES OF TREES & SHRUBS (Sinclair et al., 1987) the galls of Cronartium quercuum and Endocronartium harknessii are indistinguishable, and only micro analyses would show the species. Both species readily infect Jack Pine Pinus banksiana (the host in this case). Oaks from the Red Oak group are also present on the location, which MAY suggest Cronartium quercuum (but nothing precludes Endocronartium harknessii from being here - various oaks from this group are very typical in the Wisconsin landscape and mingle with pines all over the place). Here are two papers on the subject:. http://www.eppo.int/... ...http://mushroomobserver.org/observer/show_observation/95256
Tracking down the effects of a rare mutant gene in loblolly pine - A first report - Oxford Neuroscience
The effect of partially CAD-deficient loblolly pine (cad-nl heterozygotes) on wood density and growth was studied in a 10-year-old genotype X nutrition field experiment in Scotland County, North Carolina. Segregation analysis indicted that the cad-nl locus itself might represent a gene that governs wood density, especially the proportion of latewood in pine. We found that cad-nl heterozygotes had a significantly higher wood density compared to CAD wild-type trees. Fertilization effect was highly significant for both growth and wood density traits. CAD genotype-fertilizer interactions were not significant for any of the measurement traits.https://www.neuroscience.ox.ac.uk/publications/590437
Association of loblolly pine xylem development gene expression...
Association of loblolly pine xylem development gene expression with single-nucleotide polymorphisms.: Variation in the expression of genes with putative roles ihttps://www.mysciencework.com/publication/show/association-loblolly-pine-xylem-development-gene-expression-single-nucleotide-polymorphisms-c4621f68
Loblolly Pines Defy the Progressive Nitrogen Hypothesis | Science and Public Policy
For the Full Report in PDF Form, please click here.. [Illustrations, footnotes and references available in PDF version]. As part of one of the most outstanding of such studies ever to be conducted, Finzi and Schlesinger (2003)1 measured and analyzed pool sizes and fluxes of inorganic and organic nitrogen in the forest floor and top 30 cm of mineral soil during the first five years of differential atmospheric CO2 treatment of a stand of initially 13-year-old loblolly pine trees at the Duke Forest FACE facility in the Piedmont region of North Carolina (USA), where half of the experimental plots were maintained at an atmospheric CO2 concentration approximately 200 ppm above ambient. Under these conditions, they found that the extra CO2 significantly increased the input of carbon (C) and nitrogen (N) to the forest floor, as well as to the mineral soil in which the trees were growing.. ...http://scienceandpublicpolicy.org/science-papers/originals/loblolly-pines-defy-the-progressive-nitrogen-hypothesis
Chemical processing within and above a loblolly pine forest in North Carolina, USA | SpringerLink
Hydrocarbon species and related meteorological and chemical variables were measured within and immediately above a loblolly pine forest in North Carolina, USA during 15-18 July 2003. The degree of phohttps://link.springer.com/article/10.1007%2Fs10874-013-9276-3
BACKGROUND:The need to perform microarray experiments with small amounts of tissue has led to the development of several protocols for amplifying the target transcripts. The use of different amplification protocols could affect the comparability of microarray experiments.RESULTS:Here we compare expression data from Pinus taeda cDNA microarrays using transcripts amplified either exponentially by PCR or linearly by T7 transcription. The amplified transcripts vary significantly in estimated length, GC content and expression depending on amplification technique. Amplification by T7 RNA polymerase gives transcripts with a greater range of lengths, greater estimated mean length, and greater variation of expression levels, but lower average GC content, than those from PCR amplification. For genes with significantly higher expression after T7 transcription than after PCR, the transcripts were 27% longer and had about 2 percentage units lower GC content. The correlation of expression ...http://ufdc.ufl.edu/UF00100039/00001
Inexpensive Computation of the Inverse of the Genomic Relationship Matrix in Populations with Small Effective Population Size |...
FOR animals and plants, many genomic analyses with SNP data use one of two approaches. Either effects of SNP markers are estimated with best linear unbiased prediction (SNP-BLUP) (Meuwissen et al. 2001; VanRaden 2008; Gianola et al. 2009; Piepho 2009) or a genomic relationship matrix (GRM) is used in genomic BLUP (GBLUP) (VanRaden 2008). Estimation of SNP effects makes SNP selection and estimation of SNP variance easy, leading to straightforward single-trait prediction and genome-wide association study (GWAS). GBLUP is easier to use in more complex models (e.g., multiple traits) and for parameter estimation because existing BLUP including parameter estimation methodology can be used, although the use of GBLUP for GWAS is more complex (Zhang et al. 2010). For prediction, SNP-BLUP (possibly with SNP weighting) and GBLUP are equivalent models (VanRaden 2008) but they differ in computing cost. SNP estimation includes the same number of SNPs independent of the number of individuals. Adding extra ...http://www.genetics.org/content/202/2/401
AmeriFlux US-NC1 NC Clearcut (Dataset) | Data Explorer
This is the AmeriFlux version of the carbon flux data for the site US-NC2 NC_Loblolly Plantation. Site Description - The North Carolina Loblolly Pine site is located in a pine plantation amongst the mixed forests of the North Carolina lower coastal plain. During the latemore » 19th and early 20th centuries the region was logged extensively. After a series of clearcuts, the land was transformed for agricultural practices. In 1967 and 1969, 4000 ha was sold to the Weyerhauser company for agriculture, preservation, and commercial logging of loblolly pines in a series of plantations. The fifth rotation stand surrounding the tower was established in 1992. The only significant natural disturbances during the measurement period was a severe drought that spanned the entire duration of the 2007 growing season. Consequently, the 2007 total amount of precipitation was 486 mm below the 30-year norm. In the same year, the plantation was thinned and fertilized. The stand was thinned in Oct 2009. The eastern ...https://www.osti.gov/dataexplorer/biblio/1246082
Unraveling Additive from Nonadditive Effects Using Genomic Relationship Matrices | Genetics
Here we assessed the use of marker- and pedigree-based models to separate additive from nonadditive variances for height, in a structured population of loblolly pine. We showed that the two approaches are dramatically distinct in their capacity to properly partition the genetic variance into its various components, with marker-based models being significantly more effective in accounting for nonadditive variances. In the pedigree-based models, inclusion of nonadditive effects decreased the estimated narrow-sense heritability by 26%. This result is expected because depending on the distribution of allele frequencies, a sizable proportion of variance due to nonadditive effects can be manifest as additive variance (Lu et al. 1999; Zuk et al. 2012). In marker (pedigree) models 71% (57%) of the decrease in additive variance was captured by the dominance variance, suggesting that indeed, dominance is making a substantial contribution to the estimated additive variance obtained when dominance is ...http://www.genetics.org/content/198/4/1759