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Titolo:
Seed treatment with beta-aminobutyric acid protects Pennisetum glaucum systemically from Sclerospora graminicola
Autore:
Shailasree, S; Sarosh, BR; Vasanthi, NS; Shetty, HS;
Indirizzi:
Univ Mysore, Dept Studies Appl Bot Seed Pathol & Biotechnol, Downy Mildew Res Lab, Mysore 570006, Karnataka, India Univ Mysore Mysore Karnataka India 570006 Mysore 570006, Karnataka, India
Titolo Testata:
PEST MANAGEMENT SCIENCE
fascicolo: 8, volume: 57, anno: 2001,
pagine: 721 - 728
SICI:
1526-498X(200108)57:8<721:STWBAP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATHOGENESIS-RELATED PROTEINS; ACQUIRED-RESISTANCE; PHYTOPHTHORA-INFESTANS; DISEASE RESISTANCE; TOMATO PLANTS; DL-3-AMINOBUTYRIC ACID; DOWNY MILDEW; BLUE MOLD; BENZOTHIADIAZOLE; GROWTH;
Keywords:
DL-ss-aminobutyric acid; induced systemic resistance (ISR); seed treatment; pearl millet; Sclerospora graminicola; enhanced growth;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Shetty, HS Univ Mysore, Dept Studies Appl Bot Seed Pathol & Biotechnol, Downy Mildew Res Lab, Mysore 570006, Karnataka, India Univ Mysore Mysore Karnataka India 570006 06, Karnataka, India
Citazione:
S. Shailasree et al., "Seed treatment with beta-aminobutyric acid protects Pennisetum glaucum systemically from Sclerospora graminicola", PEST MAN SC, 57(8), 2001, pp. 721-728

Abstract

beta -Aminobutyric acid (BABA) treatment of pearl millet [Pennisetum glaucum (L) R Br] seeds influenced seedling vigour and protected the seedlings from downy mildew disease caused by the oomycetous biotropic fungus Sclerospora graminicola (Sacc) Schroet. Of the different concentrations of BABA tested, viz 25, 50, 75 and 100 mM, seeds treated with 50 mM for 6 h resulted in the maximum of 1428 seedling vigour and showed 23% disease incidence in comparison with the control which recorded a seedling vigour of 1260 and 98%disease incidence ie 75% protection from disease. Seeds treated with BABA when challenged for downy mildew disease using zoospores of S graminicola required 48 h after inducer treatment to develop maximum resistance. Durability of induced resistance was also tested in plants raised from seeds treated with the inducer and identified as resistant, by second challenge inoculation with the downy mildew pathogen at tillers and inflorescence axes. Reduced disease incidence of only 10 and 12% in these plants, compared with 71and 76% disease in control plants inoculated at the tillers and inflorescence axes, respectively, suggested that resistance induced in seeds with BABA remained operative through vegetative and reproductive growth of pearl millet plants. Induction of resistance by seed treatment with BABA enhanced vegetative growth, viz height, fresh weight, leaf area and tillering, and reproductive growth, viz early flowering, number of productive ear heads and 1000 seed weight. Studies on induction of resistance in different cultivarsof pearl millet with varying resistance reaction to downy mildew indicatedthat the protection offered by BABA is independent of the nature of cultivars used and not dependent on their constitutive resistance., (C) 2001 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 10:15:19