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50 results for “Pinus ponderosa”
Fig. 2 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 2. Examples of (a) α-pyrone biosynthesis in the exine and (b) carotenoids that may be oxidatively polymerized to form sporopollenin according to the hypothesis of Brooks and Shaw (1968).
Fig. 7 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 7. Scheme depicting the synthesis of acetonides (cyclic ketals) from 1,2- or 1,3-diols naturally present in sporopollenin, followed by hydrolysis under acidic conditions. This process corresponds to the spectroscopic changes observed in Figure S21.
Fig. 1 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 1. Scheme depicting enzymes involved in sporopollenin synthesis and selected degradation products. (a) Mid-chain oxidation of fatty acid substrates by CYP703A2, ω-oxidation by CYP704B1 and CYP704B2, and reduction of an activated fatty acid substrate by MS2. (b) Proposed sporopollenin monomer identified by Li et al. (2019). (c) The sporopollenin degradation products trans-4-hydroxycinnamic acid, trans-4-hydroxy-3-methoxycinnamic acid, and 7-hydroxyhexadecanedioic acid.
Fig. 8 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 8. ATR-FTIR spectra of (i) enzymatically-isolated sporopollenin, (ii) trans- 4-hydroxycinnamic acid, (iii) trans-4-hydroxy-3-methoxycinnamic acid, (iv) trans-4-methoxycinnamic acid, and (v) methyl trans-4-hydroxycinnamate. Original data files are deposited with the accompanying Data in Brief article (Lutzke et al., 2019).
Fig. 9 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 9. The relationship between IR band assignments and hypothesized structural components of sporopollenin.
Fig. 5 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 5. ATR-FTIR spectra of (i) enzymatically-isolated sporopollenin, (ii) sporopollenin isolated by acidolysis with phosphoric acid, and (iii) sporopollenin isolated by acetolysis. Distinct bands or shoulders with diagnostic importance are assigned a unique identifier in Table 3. Original data files are deposited with the accompanying Data in Brief article (Lutzke et al., 2019).
Phylogenomics in the hard pines (Pinus subsection Ponderosae; Pinaceae) confirms paraphyly in Pinus ponderosa, and places Pinus jeffreyi with the California big cone pines
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Data from: Pinus ponderosa alters nitrogen dynamics and diminishes the climate footprint in natural ecosystems of Patagonia
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Data from: Intraspecific niche models for ponderosa pine (Pinus ponderosa) suggest potential variability in population-level response to climate change.
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Fig. 3 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 3. Model compounds used in the infrared characterization of sporopollenin.
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International Brain Laboratory public data
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OpenNeuro
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