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Titolo:
ANTIMICROBIAL PEPTIDES FROM PLANTS
Autore:
BROEKAERT WF; CAMMUE BPA; DEBOLLE MFC; THEVISSEN K; DESAMBLANX GW; OSBORN RW;
Indirizzi:
KATHOLIEKE UNIV LEUVEN,FA JANSSENS LAB GENET,WILLEM DE CROYLAAN 42 B-3001 HEVERLEE BELGIUM ZENECA AGROCHEM,JEALOTTS HILL RES STN BRACKNELL RG42 6ET BERKS ENGLAND
Titolo Testata:
Critical reviews in plant sciences
fascicolo: 3, volume: 16, anno: 1997,
pagine: 297 - 323
SICI:
0735-2689(1997)16:3<297:APFP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIPID-TRANSFER PROTEIN; BARLEY HORDEUM-VULGARE; NUCLEAR MAGNETIC-RESONANCE; TREE HEVEA-BRASILIENSIS; LEAF-SPECIFIC THIONINS; AMINO-ACID-SEQUENCE; INDUCIBLE ANTIBACTERIAL PEPTIDES; RESTRAINED MOLECULAR-DYNAMICS; BROCCOLI BRASSICA-OLERACEA; SOLUTE PARTICLES IMPORTANT;
Keywords:
ANTIFUNGAL; DEFENSE; DEFENSIN; HEVEIN; KNOTTIN; LIPID TRANSFER PROTEIN; MOLECULAR BREEDING; PATHOGEN; RESISTANCE; THIONIN; TRANSGENIC PLANT;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
149
Recensione:
Indirizzi per estratti:
Citazione:
W.F. Broekaert et al., "ANTIMICROBIAL PEPTIDES FROM PLANTS", Critical reviews in plant sciences, 16(3), 1997, pp. 297-323

Abstract

Peptides with antimicrobial properties are present in most if not allplant species. All plant antimicrobial peptides isolated so far contain even numbers of cysteines (4, 6, or 8), which are all pairwise connected by disulfide bridges, thus providing high stability to the peptides. Based on homologies at the primary structure level, plant antimicrobial peptides can be classified into distinct families including thionins, plant defensins, lipid transfer proteins, and hevein- and knottin-type antimicrobial peptides. Detailed three-dimensional structure information has been obtained for one or more members of these peptide families. All antimicrobial peptides studied thus far appear to exert their antimicrobial effect at the level of the plasma membrane of the target microorganism, but the different peptide types are likely to act via different mechanisms. Antimicrobial peptides can occur in all plant organs. In unstressed organs, antimicrobial peptides are usually most abundant in the outer cell layer lining the organ, which is consistent with a role for the antimicrobial peptides in constitutive host defense against microbial invaders attacking from the outside. Thioninsare predominantly located intracellularly but are also found in the extracellular space, whereas most plant defensins and lipid transfer proteins are deposited exclusively in the extracellular space. In a number of plant species, a strong induction of genes expressing either thionins, plant defensins, or lipid transfer proteins has been observed on infection of the leaves by microbial pathogens. Hence, antimicrobialpeptides can also take part in the inducible defense response of plants. Constitutive expression in transgenic plants of heterologous antimicrobial peptide genes has been achieved, which in some cases has led to enhanced resistance to particular microbial plant pathogens.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/11/20 alle ore 21:30:04