Disease relevance of Pseudotsuga

• Identification of an Agrobacterium tumefaciens virulence gene inducer from the pinaceous gymnosperm Pseudotsuga menziesii [1].
• Douglas fir (Pseudotsuga menziesii) variety glauca (DFG) but not the variety viridis (DFV) showed symptoms of manganese (Mn) toxicity in some field sites [2].

High impact information on Pseudotsuga

• A new inducer, the phenylpropanoid glucoside coniferin, has now been isolated from Pseudotsuga menziesii (Douglas-fir) [1].
• In order to test this Hyp contiguity hypothesis, we have for the first time determined the arabinosylation site specifics of an HRGP, namely the proline and hydroxyproline-rich glycoprotein (PHRGP) isolated from Douglas fir (Pseudotsuga menziesii) [3].
• MJ and ethylene but not methyl salicylate caused enhanced phenolic synthesis in polyphenolic parenchyma cells, early sclereid lignification, and reprogramming of the cambial zone to form traumatic resin ducts in Pseudotsuga menziesii and Sequoiadendron giganteum [4].
• Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) metallothionein (PmMT) cDNA encodes a novel cysteine- and serine-rich MT, indicating a new subtype or prototype MT from which other plant MTs may have evolved [5].
• Transient expression analysis of PmBiPPro1 fused to the beta-glucuronidase (GUS) reporter gene demonstrated that this promoter is functional in germinating Douglas-fir embryos [6].

Chemical compound and disease context of Pseudotsuga

• Agrobacterium strains with high beta-glucosidase activity respond to coniferin and infect Douglas fir seedlings, whereas most strains with low beta-glucosidase activity fail to respond to coniferin and are avirulent on this host [7].

Biological context of Pseudotsuga

• Characterization and expression of the Douglas-fir luminal binding protein (PmBiP) [8].
• To begin to determine the regulation of CPR gene expression and enzyme activity in Douglas-fir a full-length cDNA was isolated from a seedling lambda ZAP cDNA library and the ORF was used to develop a synthetic CPR-peptide-based antiserum [9].
• The most significant tissue-level differences that occurred were that N and TNC were two to six times higher for inner bark than sapwood, TNC was about two times higher in ponderosa pine than Douglas-fir and there was significant seasonal variation in TNC [10].
• We concluded that expression of differences in budworm resistance among Douglas fir genotypes might be caused by interactions among multiple resistance mechanisms such as needle monoterpenes and tree budburst phenology [11].

Associations of Pseudotsuga with chemical compounds

• Structure and expression of a developmentally regulated cDNA encoding a cysteine protease (pseudotzain) from Douglas fir [12].
• A set of Douglas-fir needle litter microcosms was amended with cadmium, acid, a combination of both, or neither [13].
• Methyl jasmonate treatment induced expression of these genes in dormant seeds of Douglas fir [14].
• The isolation of a novel metallothionein-related cDNA expressed in somatic and zygotic embryos of Douglas-fir: regulation by ABA, osmoticum, and metal ions [15].
• Nitrogen-fixing microbial populations in a Douglas fir forest on the western slope of the Oregon Cascade Mountain Range were analyzed [16].

Gene context of Pseudotsuga

• Regulation of NADPH-cytochrome P450 reductase expressed during Douglas-fir germination and seedling development [9].
• The expression of the PM 2.1 gene in embryos was dependent upon ABA and osmoticum and in seedlings was differentially modulated by metals, suggesting a role of the PM 2.1 gene product in the control of microelement availability during Douglas-fir seed development and germination [15].
• Characterization of proteinase activity in stratified Douglas-fir seeds [17].
• We measured vertical and horizontal variation in canopy transmittance of photosynthetically active radiation in five Pseudotsuga menziesii (Mirb.) Franco-Tsuga heterophylla (Raf.) Sarg [18].
• Plots of Delta versus both WUE(i) and WUE(T) revealed negative trends, but the regression between WUE(i) and Delta was significant only for Douglas-fir, and the regression between WUE(T) and Delta was significant only for poplar [19].

References