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Titolo:
Effect of chitosan on systemic viral infection and some defense responses in potato plants
Autore:
Chirkov, SN; Ilina, AV; Surgucheva, NA; Letunova, EV; Varitsev, YA; Tatarinova, NY; Varlamov, VP;
Indirizzi:
Russian Acad Sci, Inst Microbiol, Moscow 117811, Russia Russian Acad Sci Moscow Russia 117811 t Microbiol, Moscow 117811, Russia Russian Acad Sci, Ctr Bioengn, Moscow, Russia Russian Acad Sci Moscow Russia an Acad Sci, Ctr Bioengn, Moscow, Russia
Titolo Testata:
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 6, volume: 48, anno: 2001,
pagine: 774 - 779
SICI:
1021-4437(200111/12)48:6<774:EOCOSV>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESISTANCE; INDUCTION; VIRUS; DISEASE;
Keywords:
Solanum tuberosum; chitosan; viral infection; ribonuclease; callose; beta-1,3-glucanase; resistance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Chirkov, SN Russian Acad Sci, Inst Microbiol, Pr 60 Letiya Oktyabrya 7,Build 2, Moscow117811, Russia Russian Acad Sci Pr 60 Letiya Oktyabrya 7,Build 2 Moscow Russia 117811
Citazione:
S.N. Chirkov et al., "Effect of chitosan on systemic viral infection and some defense responses in potato plants", RUSS J PL P, 48(6), 2001, pp. 774-779

Abstract

The development and the possible mechanism of the chitosan-induced resistance to viral infection were investigated in potato plants. The plants were sprayed with a solution of chitosans (1 mg/ml) with the mot wt of 3, 36, and 120 kD. After 1, 2, 3, or 4 days, the treated leaves were cut off and mechanically infected with the potato virus X (PVX), The disks cut out from the inoculated leaves were used for determining virus accumulation. callose content. and ribonuclease and beta -1,3-glucanase activities. In another setof experiments, the plants were infected with PVX within 1, 4, or 8 days after chitosan treatment. and the number of systemically infected plants wasdetermined. It was found that, a day after treatment, the plants acquired a resistance to viral infection. The disks from the chitosan-treated leaves. as compared to the control, accumulated less amount of virus. The chitosan treatment also significantly decreased the number of systemically infected plants as compared to the control. After 2-3 days, the resistance disappeared or even gave way to an increased susceptibility to the infection; subsequently, the resistance increased again. The extent or the resistance correlated with the callose content and the level of ribonuclease activity observed on the infection day. The resistance towards the infection with PVX isprobably mediated by the callose and ribonuclease induction. The cultivation of test-tube potato plants from the cuttings previously infected with PVX on the chitosan-containing nutrient medium did not eradicate the viral infection from the plants.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 13:08:12