Plants physiological role

Hasanuzzaman M, Hossain MA, Fujita M (2010) Selenium in higher plants physiological role, antioxidant metabolism and abiotic stress tolerance. J Plant Sci 5 354-375. doi 10.3923/... 

R. P. Phans and D. M. Reid, eds., Emyclopedia of Plant Physiology Hormonal Regulation of Development 111, Role of EnvironmentalEactors, Vol. 11, Springer Vedag, Berlin, 1985. 

The variation ia water solubiUty among polysaccharides results ia varied physiological roles. Plant ceU-waH polysaccharides and lignin provide iasoluble dietary fiber (IDF) nondigestible storage polysaccharides, some pectic polysaccharides, and most of the functional additives contribute soluble dietary fiber (SDF). 

Brownleader M.D. Hopkins J. Mobasheri A. et al. (2002) Role of extension peroxidases in tomato Lycopersicon esculentum MiU.) seedling growth // Planta V. 210. P. 668-676. Burhanova G.F. Yarullina L. G. Maksimov I. V. (2007) Effect of chitooligosaccharides on wheat defence responses to infection by Bipolaris sorokiniana / / Russ. J. of plant physiology. V. 54. P. 104 -110. 

Anderson, I.C. Robertson, D.S. (1960). Role of carotenoids in protecting chlorophyll from photodestruction. Plant Physiology, 35, 531-4. 

Potter, J.R. Boyer, J.S. (1973). Chloroplast response to low leaf water potentials. II. Role of osmotic potential. Plant Physiology, 51, 993-7. 

Hartung, W., Radin, J.W. Hendrix, D.L. (1988). Abscisic acid movement into the apoplastic solution of water-stressed cotton leaves Role of apoplastic pH. Plant Physiology, 86, 908-13. 

Ben-Hayyim, G., Kalkafi, U. Ganmore-Neuman, R. (1987). Role of internal potassium in maintaining growth of cultured citrus cells on increasing NaCl and CaCl2 concentrations. Plant Physiology, 85, 434-40. 

Cleland, R.E. (1986). The role of hormones in wall loosening and plant growth. Australian Journal of Plant Physiology, 13, 93-103. 

The role of pectin in plant physiology is still far from clear. It is considered by some to be a cementing material but it is evident that the various types of pectic materials are able to perform in plants exceedingly varied biological functions. 

Unlike the photosynthetic apparatus of photosynthetic bacteria, that of cyanobacteria consits of two photosystems, PS I and II, connected by an electron transport chain. The only chlorophyll present is chlorophyll a, and, therefore, chlorophylls b—d are not of interest in this article. Chlorophyll a is the principal constituent of PS I. Twenty per cent of isolated pigment-protein complexes contain one P700 per 20—30 chlorophyll a molecules the other 80% contain only chlorophyll a20). The physical and chemical properties of chlorophyll a and its role in photosynthesis have recently been described by Meeks77), Mauzerall75), Hoch60), Butler10), and other authors of the Encyclopedia of Plant Physiology NS Vol. 5. 

Bell EA. 1981. The physiological role(s) of secondary (natural) products. In Conn EE, editor. The Biochemistry of Plants. Volume 7, Secondary Plant Products. New York Academic Press, pp. 1-19. 

As regards their physiological roles, many polyphenols (because of their antimicrobial and antioxidant properties) are directly involved in the response of plants to various types of stress (Lopcz-Nicolas and others 2006 Lopez-Nicolas and Garcia-Carmona 2008). 

LOXs are normally present in the seeds of plants, although LOXs do not have a clear physiological role in seed development, because no negative effects on crop performance were observed in LOX-deficient seeds as compared with a normal line. For this reason, the possible function of seed LOXs as storage proteins is considered. 

Carotenoid catabolic products also have a physiological role in the plant. Oxidative cleavage of carotenoids by carotenoid cleavage dioxygenases (CCDs) generates apocarotenoids [21]. Apocarotenoids serve the plant as antifungal agents or in the synthesis of flavor or aroma of flowers and fruits. A well-known downstream product of an apocarotenoid is abscisic acid (ABA), a phytohormone in plants [21]. 

Gaspar, T. Penel, C. Thorpe, T Greppin, H. Peroxidases 1970-1980. A Survey of Their Biochemical and Physiological Roles in Higher Plants University of Geneva Geneva, 1982. 

Knowledge of the flavonoid content of plant-based foods is paramount to understanding their role in plant physiology and human health. Analytical methods are also important to identify adulteration of beverages, for example. And flavonoids are indispensable markers for chemotaxonomic purposes. 

Pilbeam, D.J. and E.A. Kirkby. 1983. The physiological role of boron in plants. Jour. Plant Nutr. 6 563-582. Price, C.J., P.L. Strong, F.J. Murray, and M.M. Goldberg. 1998. Developmental effects of boric acid in rats related to maternal blood boron concentrations. Biol. Trace Elem. Res. 66 359-372. 

Local and systemic production of volatile herbivore-induced terpenoids their role in plant-carnivore mutualism. Journal of Plant Physiology 143 465 472. 

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