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CABI Book Chapter

Amino acids in higher plants.

Book cover for Amino acids in higher plants.

Description

This book, divided into 5 parts, deals with topics on amino acids in higher plants. Part I (enzymes and metabolism) contains 16 chapters pursuing the theme of amino acid metabolism through the driving actions of the principal enzymes, emphasizing recent advances particularly with reference to localization, biophysical characterization and regulation. Part II (dynamics) includes two chapters design...

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Chapter 21 (Page no: 390)

Melatonin: synthesis from tryptophan and its role in higher plant.

Melatonin, a well-known neurohormone, was discovered in animal tissues in 1958. In plants, its presence was detected in 1995, and its biosynthesis, from tryptophan, seems to follow similar enzymatic steps in plant and animal cells, although with some very particular characteristics. Even though our knowledge of the biosynthetic enzymes of melatonin in plants is still taking its first steps, a greater plasticity has been observed in plant cells than in animal cells, as was to be expected. As they have been in animals, some catabolic products of the kynuric pathway have been determined in plants. Initially, melatonin was investigated to establish whether it had the same physiological function, as a chronoregulator, in plants as in animals. Its antioxidant properties have marked much of the research carried out into its possible physiological roles in both plants and animals. In plants, various studies have suggested more specific physiological actions, such as, for example, its roles as a plant growth regulator, an activator of rhizogenesis and a signal molecule/antioxidant in many plant stress situations. The melatonin levels that have been observed in different plant species vary widely - from picograms to micrograms per gram of tissue. The search for plant materials with high levels of melatonin has opened the door for its possible use as a nutraceutical for both humans and livestock. In addition, there has been great interest in the application of melatonin in agriculture to obtain more resistant crops and better harvests in adverse situations.

Other chapters from this book

Chapter: 1 (Page no: 1) Glutamate dehydrogenase. Author(s): Osuji, G. O. Madu, W. C.
Chapter: 2 (Page no: 30) Alanine aminotransferase: amino acid metabolism in higher plants. Author(s): Raychaudhuri, A.
Chapter: 3 (Page no: 57) Aspartate aminotransferase. Author(s): Leasure, C. D. He, Z. H.
Chapter: 4 (Page no: 68) Tyrosine aminotransferase. Author(s): Hudson, A. O.
Chapter: 5 (Page no: 82) An insight into the role and regulation of glutamine synthetase in plants. Author(s): Sengupta-Gopalan, C. Ortega, J. L.
Chapter: 6 (Page no: 100) Asparagine synthetase. Author(s): Duff, S. M. G.
Chapter: 7 (Page no: 129) Glutamate decarboxylase. Author(s): Molina-Rueda, J. J. Garrido-Aranda, A. Gallardo, F.
Chapter: 8 (Page no: 142) L-arginine-dependent nitric oxide synthase activity. Author(s): Corpas, F. J. Río, L. A. del Palma, J. M. Barroso, J. B.
Chapter: 9 (Page no: 156) Ornithine: at the crossroads of multiple paths to amino acids and polyamines. Author(s): Majumdar, R. Minocha, R. Minocha, S. C.
Chapter: 10 (Page no: 177) Polyamines in plants: biosynthesis from arginine, and metabolic, physiological and stress-response roles. Author(s): Mattoo, A. K. Fatima, T. Upadhyay, R. K. Handa, A. K.
Chapter: 11 (Page no: 195) Serine acetyltransferase. Author(s): Watanabe, M. Hubberten, H. M. Saito, K. Hoefgen, R.
Chapter: 12 (Page no: 219) Cysteine homeostasis. Author(s): García, I. Romero, L. C. Gotor, C.
Chapter: 13 (Page no: 234) Lysine metabolism. Author(s): Medici, L. O. Nazareno, A. C. Gaziola, S. A. Schmidt, D. Azevedo, R. A.
Chapter: 14 (Page no: 251) Histidine. Author(s): Ingle, R. A.
Chapter: 15 (Page no: 262) Amino acid synthesis under abiotic stress. Author(s): Planchet, E. Limami, A. M.
Chapter: 16 (Page no: 277) The central role of glutamate and aspartate in the post-translational control of respiration and nitrogen assimilation in plant cells. Author(s): O'Leary, B. Plaxton, W. C.
Chapter: 17 (Page no: 298) Amino acid export in plants. Author(s): Price, M. B. Okumoto, S.
Chapter: 18 (Page no: 315) Uptake, transport and redistribution of amino nitrogen in woody plants. Author(s): Pfautsch, S. Bell, T. L. Gessler, A.
Chapter: 19 (Page no: 340) Auxin biosynthesis. Author(s): Chandler, J. W.
Chapter: 20 (Page no: 362) Involvement of tryptophan-pathway-derived secondary metabolism in the defence responses of grasses. Author(s): Ishihara, A. Matsukawa, T. Nomura, T. Sue, M. Oikawa, A. Okazaki, Y. Tebayashi, S.
Chapter: 22 (Page no: 436) Glucosinolate biosynthesis from amino acids. Author(s): Stotz, H. U. Brown, P. D. Tokuhisa, J.
Chapter: 23 (Page no: 448) Natural toxins that affect plant amino acid metabolism. Author(s): Duke, S. O. Dayan, F. E.
Chapter: 24 (Page no: 461) Glyphosate: the fate and toxicology of a herbicidal amino acid derivative. Author(s): Saltmiras, D. A. Farmer, D. R. Mehrsheikh, A. Bleeke, M. S.
Chapter: 25 (Page no: 481) Amino acid analysis of plant products. Author(s): Rutherfurd, S. M.
Chapter: 26 (Page no: 497) Metabolic amino acid availability in foods of plant origin: implications for human and livestock nutrition. Author(s): Levesque, C. L.
Chapter: 27 (Page no: 507) Toxicology of non-protein amino acids. Author(s): D'Mello, J. P. F.
Chapter: 28 (Page no: 538) Delivering innovative solutions and paradigms for a changing environment. Author(s): D'Mello, J. P. F.

Chapter details

  • Author Affiliation
  • Department of Plant Physiology, Faculty of Biology, University of Murcia, 30100-Murcia, Spain.
  • Year of Publication
  • 2015
  • ISBN
  • 9781780642635
  • Record Number
  • 20153121431