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 399 ATP PfrB PrB Red light Far red light PrA PSK1 Dark Dark Dark Light Light Light Light Light Light PSK1 COP1 SPA1 COP1 PfrA Red light Far ... intermediates in hormone- and light- Phytochr...

Ngày tải lên: 07/03/2014, 21:20

... [L] (Leu) Isoleucine [I] (Ile) - COO - COO - COO - COO - COO - COO C CH 2 C - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO - COO H 3 N + H 3 N + H 3 N + + + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N + H 3 N...

Ngày tải lên: 20/02/2014, 01:20

... stress (see Chapter 23). (After Hsiao 1979.) lation of solutes, closing of stomata, and inhibition of pho- tosynthesis. Water potential is one measure of how hydrated a plant is and thus provides ... Conditions and Location within the Plant Just as Y w values depend on the growing conditions and the type of plant, so too, the values of Y s can vary consid- erably. W...

Ngày tải lên: 20/02/2014, 01:20

... the rate 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 given together, the rate of ... The slight dip near 500 nm reflects the somewhat lower efficiency of photosynthesis using light absorbed by accessory pigments, carotenoids. Far-red light on Off Off OffR...

Ngày tải lên: 20/02/2014, 01:20

... CO 2 . 244 Chapter 11 RESPIRATION IN INTACT PLANTS AND TISSUES Many rewarding studies of plant respiration and its regu- lation have been carried out on isolated organelles and on cell-free extracts of ... Substrates and Products The electrochemical proton gradient also plays a role in the movement of the organic acids of the citric acid cycle and of substrates and p...

Ngày tải lên: 07/03/2014, 20:20

... maize and is a gain -of- function mutation. In gain -of- function, or dominant, mutations, the phenotype 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...

Ngày tải lên: 07/03/2014, 21:20

... blue -light photoreceptors and the sig- nal transduction cascade that links light perception with the 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 t...

Ngày tải lên: 16/03/2014, 22:20

... in Chapter 7 (see Figures 7.2 and 7.3, and Web Topic 7.1). A discussion of the amount and direction of light reaching the plant requires consideration 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 rol...

Ngày tải lên: 07/03/2014, 20:20

... hypersensitive to UV-B irradiation. Plant Cell 5: 171 179 . Lichtenthaler, H. K. (1999) The 1-deoxy-D-xylulose-5-phosphate pathway of isoprenoid biosynthesis in plants. Annu. Rev. Plant Physiol. Plant Mol. ... on neighboring plants is the study of allelopa- thy . If a plant can reduce the growth of nearby plants by releasing chemicals into the soil, it may increase its access...

Ngày tải lên: 07/03/2014, 20:20

... member of the seven-span- ning transmembrane family of receptors. Rhodopsin consists of the protein opsin covalently bound to the light- absorbing molecule 11-cis-retinal. When 11-cis-reti- nal ... in the responses of phytochrome (see Chapter 17) and gib- berellin (see Chapter 20). Nitric Oxide Gas Stimulates the Synthesis of cGMP The level of 3′,5′-cyclic GMP in cells i...

Ngày tải lên: 07/03/2014, 21:20