Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Compromised disease resistance in saponin-deficient plants
Autore:
Papadopoulou, K; Melton, RE; Leggett, M; Daniels, MJ; Osbourn, AE;
Indirizzi:
John Innes Ctr, Sainsbury Lab, Norwich NR4 7UH, Norfolk, England John Innes Ctr Norwich Norfolk England NR4 7UH NR4 7UH, Norfolk, England Inst Grasslands & Environm Res, Aberystwyth SY23 3EB, Dyfed, Wales Inst Grasslands & Environm Res Aberystwyth Dyfed Wales SY23 3EB ed, Wales
Titolo Testata:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
fascicolo: 22, volume: 96, anno: 1999,
pagine: 12923 - 12928
SICI:
0027-8424(19991026)96:22<12923:CDRISP>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
NECTRIA-HAEMATOCOCCA; DEFENSE; ARABIDOPSIS; DETOXIFICATION; PHYTOALEXINS; VIRULENCE; PATHOGENS; MUTANTS; FUNGUS; AVENAE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Osbourn, AE John Innes Ctr, Sainsbury Lab, Colney Lane, Norwich NR4 7UH, Norfolk, England John Innes Ctr Colney Lane Norwich Norfolk England NR4 7UH and
Citazione:
K. Papadopoulou et al., "Compromised disease resistance in saponin-deficient plants", P NAS US, 96(22), 1999, pp. 12923-12928

Abstract

Saponins are glycosylated plant secondary metabolites found in many major food crops [Price, K. R., Johnson, I. T. & Fenwick, G. R. (1987) CRC Grit Rev. Food Sci. Nutr. 26, 27-133]. Because many saponins have potent antifungal properties and are present in healthy plants in high concentrations, these molecules may act as preformed chemical barriers to fungal attack. The isolation of plant mutants defective in saponin biosynthesis represents a powerful strategy for evaluating the importance of these compounds in plant defense. The oat root saponin avenacin A-1 fluoresces under ultraviolet illumination [Crombie, L., Crombie, W. M. L. & Whiting, D. A. (1986) J. Chem. Sec. Perkins 1, 1917-1922], a property that is extremely rare among saponins. Here we have exploited this fluorescence to isolate saponin-deficient (sad) mutants of a diploid oat species, Avena strigosa. These sad mutants are compromised in their resistance to a variety of fungal pathogens, and a number of lines of evidence suggest that this compromised disease resistance is a direct consequence of saponin deficiency. Because saponins are widespread throughout the plant kingdom, this group of secondary metabolites may have general significance as antimicrobial phytoprotectants.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 01:10:45