Plant physiology - Chapter 17 Phytochrome and Light Control of Plant Development pptx
Plant physiology - Chapter 17 Phytochrome and Light Control of Plant Development pptx
... Absorption of red light by Pr con-verts it to Pfr, and absorption of far-red light by Pfr con-398 Chapter 17 Phytochrome and Light Control of Plant Development 399ATPPfrBPrBRed light Far red light PrAPSK1DarkDarkDark Light Light Light Light Light LightPSK1COP1SPA1COP1PfrARed light Far ... intermediates in hormone- and light- Phytochrome and Light Control of Plant Development 397ATPPPPPChromophore Phytochrome Red light ChromophoreChromophoreRed light Ser Kinase domainH2NH2NCOOHChromophoreSer ... it Phytochrome and Light Control of Plant Development 377TABLE 17. 1 Typical photoreversible responses induced by phytochrome in a variety of higher and lower plants Group Genus Stage of development...
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Tài liệu Plant physiology - Chapter 2 Energy and Enzymes docx
... [L](Leu)Isoleucine [I](Ile) - COO - COO - COO - COO - COO - COOCCH2C - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COOH3N+H3N+H3N+++H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H3N+H2N+Figure ... metabolic control by fructose-2,6-bisphos-phate, as well as ATP, Pi, fructose-6-phosphate, dihy-droxyacetone phosphate, and 3-phosphoglycerate. Therole of fructose-2,6-bisphosphate in plant ... configuration. Rubisco (D-ribulose-1,5-bisphos-phate carboxylase/oxygenase) catalyzes the addition of carbon dioxide to D-ribulose-1,5-bisphosphate to formtwo molecules of 3-phospho-D-glycerate, the...
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Tài liệu Plant physiology - Chapter 3 Water and Plant Cells docx
... stress (see Chapter 23). (AfterHsiao 1979.)lation of solutes, closing of stomata, and inhibition of pho-tosynthesis. Water potential is one measure of howhydrated a plant is and thus provides ... Conditions and Location within the Plant Just as Ywvalues depend on the growing conditions and the type of plant, so too, the values of Yscan vary consid-erably. Within cells of well-watered ... negative val-ues for Yp. In the xylem of rapidly transpiring plants, Ypis negative and may attain values of –1 MPa or lower. Themagnitude of Ypin the cell walls and xylem varies consid-erably,...
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Tài liệu Plant physiology - Chapter 7 Photosynthesis: The Light Reactions pptx
... therate of photosynthesis separately with light of two differ-ent wavelengths and then used the two beams simultane-ously (Figure 7.13). When red and far-red light were giventogether, the rate of ... The slightdip near 500 nm reflects the somewhat lower efficiency of photosynthesis using light absorbed by accessory pigments,carotenoids. Far-red light onOff Off OffRed light onBothlights ... NFeCH2CH3ProteinProtoheme of b-typecytochromesHeme c of c-typecytochromesFIGURE 7.28 Structure of prosthetic groups of b- and c-type cytochromes. The pro-toheme group (also called protoporphyrin...
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Plant physiology - Chapter 11 Respiration and Lipid Metabolism pptx
... CO2.244 Chapter 11RESPIRATION IN INTACT PLANTS AND TISSUESMany rewarding studies of plant respiration and its regu-lation have been carried out on isolated organelles and oncell-free extracts of ... Substrates and ProductsThe electrochemical proton gradient also plays a role in themovement of the organic acids of the citric acid cycle and of substrates and products of ATP synthesis in and out of mitochondria. ... respiration to recent developments in our understanding of the biochemistry and molecular biology of plant mitochondria.In the second part of the chapter we will describe the pathways of lipid biosynthesis...
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Plant physiology - Chapter 16 Growth and Development pot
... maize and is a gain -of- functionmutation. In gain -of- function, or dominant, mutations, thephenotype results from the abnormal expression of a gene.In contrast, the phenotypes of loss -of- function ... stained light blue, while the cyto-plasm stains dark blue. (Courtesy of R. Aloni).Growth and Development 16 Chapter THE VEGETATIVE PHASE OF DEVELOPMENT begins with embryo-genesis, but development ... determine the size and shape of the primary plant body. The total growth of the plant can bethought of as the sum of the local patterns of cell expansion.The analysis of the motions of cells or “tissue...
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Plant physiology - Chapter 18 Blue-Light Responses: Stomatal Movements and Morphogenesis pdf
... blue -light photoreceptors and the sig-nal transduction cascade that links light perception withthe final expression of blue -light sensing in the organism.THE PHOTOPHYSIOLOGY OF BLUE -LIGHT ... phy-tochrome and blue -light responses. The former are identified by a spe-cific photoreceptor (phytochrome) , the latter by the blue -light region of the visible spectrum. In the case of phytochrome, ... responses of plants can be clearly attrib-uted to the phytochrome photoreceptor (see Chapter 17) .In contrast, the spectroscopy of blue -light responses iscomplex. Both chlorophylls and phytochrome...
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Plant physiology - Chapter 9 Photosynthesis: Physiological and Ecological Considerations pptx
... in Chapter 7 (seeFigures 7.2 and 7.3, and Web Topic 7.1). A discussion of theamount and direction of light reaching the plant requiresconsideration of the geometry of the part of the plant ... and Hikosaka, K. (1995) Comparative ecophysiol-ogy of leaf and canopy photosynthesis. Plant Cell Environ. 18:1111–1128.Tlalka, M., and Fricker, M. (1999) The role of calcium in blue -light- dependent ... resis-tance to CO2diffusion, so the supply of CO2for photosyn-thesis meets a series of different points of resistance (Fig-ure 9 .17) . An evaluation of the magnitude of each point of resistance...
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Plant physiology - Chapter 13 Secondary Metabolites and Plant Defense docx
... hypersensitive to UV-Birradiation. Plant Cell 5: 171 179 .Lichtenthaler, H. K. (1999) The 1-deoxy-D-xylulose-5-phosphatepathway of isoprenoid biosynthesis in plants. Annu. Rev. Plant Physiol. Plant Mol. ... onneighboring plants is the study of allelopa-thy. If a plant can reduce the growth of nearby plants by releasing chemicals into thesoil, it may increase its access to light, water, and nutrients and ... mech-anism of resistance to pathogenic microbes in a wide range of plants. However, different plant families employ differ-ent types of secondary products as phytoalexins. For exam-ple, isoflavonoids...
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Plant physiology - Chapter 14 Gene Expression and Signal Transduction potx
... member of the seven-span-ning transmembrane family of receptors. Rhodopsinconsists of the protein opsin covalently bound to the light- absorbing molecule 11-cis-retinal. When 11-cis-reti-nal ... in theresponses of phytochrome (see Chapter 17) and gib-berellin (see Chapter 20).Nitric Oxide Gas Stimulates the Synthesis of cGMPThe level of 3′,5′-cyclic GMP in cells is controlled by thebalance ... from tomato plants that is processed during patho-genesis. Plant J. 10: 315–330.Walker, J. C. (1994) Structure and function of the receptor-like pro-tein kinases of higher plants. Plant Mol....
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