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Titolo:
WY-14,643 and other agonists of the peroxisome proliferator-activated receptor reveal a new mode of action for salicylic acid in soybean disease resistance
Autore:
Tenhaken, R; Anstatt, C; Ludwig, A; Seehaus, K;
Indirizzi:
Univ Kaiserslautern, FB Biol, D-67653 Kaiserslautern, Germany Univ Kaiserslautern Kaiserslautern Germany D-67653 iserslautern, Germany
Titolo Testata:
PLANTA
fascicolo: 5-6, volume: 212, anno: 2001,
pagine: 888 - 895
SICI:
0032-0935(200104)212:5-6<888:WAOAOT>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEMIC ACQUIRED-RESISTANCE; PPAR-GAMMA; CELL-DEATH; SIGNAL-TRANSDUCTION; GENE-EXPRESSION; PLANTS; INHIBITION; INDUCTION; INDUCERS; DEFENSE;
Keywords:
Glycine (disease resistance); ligand (of PPAR); hypersensitive reaction; programmed cell death; salicylic acid; peroxisome proliferator-activated receptor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Tenhaken, R Univ Kaiserslautern, FB Biol, Geb 22, D-67653 Kaiserslautern, Germany Univ Kaiserslautern Geb 22 Kaiserslautern Germany D-67653 any
Citazione:
R. Tenhaken et al., "WY-14,643 and other agonists of the peroxisome proliferator-activated receptor reveal a new mode of action for salicylic acid in soybean disease resistance", PLANTA, 212(5-6), 2001, pp. 888-895

Abstract

Inoculation of soybean (Glycine max [L.] Merr.) cell-suspension cultures with avirulent bacteria results in a salicylic acid (SA)-controlled programmed cell death (pcd). To unravel the nature of the SA-dependent step in pcd,a screening procedure for complementing compounds was performed. Diverse chemicals that are well known as activating ligands for orphan receptors in animals, particularly receptors of the PPAR (peroxisome proliferator-activated receptor) subfamily, were found to be active. These include the compounds WY-14643, flufenamic acid. LY-171883, tolbutamide, indomethacin and clofibrate. A new marker gene (DD-CA9) from soybean that is induced in the hypersensitive reaction by SA and by PPAR ligands was isolated by differential display, and showed homology to antifungal lectins. In plants, SA is also involved in a signal transduction pathway leading to systemic acquired resistance (SAR). The PPAR ligands which act on the pcd pathway for plant resistance induce a beta -1,3-glucanase gene in soybean at high concentrations but do not induce marker genes of the SAR pathway such as the PR-I gene in tobacco or Arabidopsis. Thus SA seems to act on two independent plant defencepathways that can now be separately activated by synthetic compounds. We propose a model for the control of pcd by SA in soybean, in which SA inducesthe transcription of (novel) genes required for the final completion of the cell death program.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:43:26