Thiamine seed treatment enhances LOX expression, promotes growth and induces downy mildew disease resistance in pearl millet

Seeds of pearl millet (Pennisetum glaucum) susceptible cv. 7042S were treated with thiamine at 5, 10, 15, 20 and 25 mM concentrations, and growth promotion and downy mildew resistance were tested. Seed treatment with 20 mM thiamine resulted in 72 and 70 % disease protection under greenhouse and fiel...

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Veröffentlicht in:	Biologia plantarum 2011-09, Vol.55 (3), p.522-527
Hauptverfasser:	Pushpalatha, H.G., University of Mysore (India). Dept. of Studies in Biotechnology, Sudisha, J., University of Mysore (India). Dept. of Studies in Biotechnology, Geetha, N.P., University of Mysore (India). Dept. of Studies in Biotechnology, Amruthesh, K.N., University of Mysore (India). Dept. of Studies in Botany, Shekar Shetty, H., University of Mysore (India). Dept. of Studies in Biotechnology
Format:	Artikel
Sprache:	eng
Schlagworte:	ACTIVIDAD ENZIMATICA ACTIVITE ENZYMATIQUE ALTURA ARN Biomedical and Life Sciences CRECIMIENTO CROISSANCE DISEASE RESISTANCE ENZYME ACTIVITY EXPRESION GENICA EXPRESSION DES GENES FLORACION FLORAISON FLOWERING GENE EXPRESSION GRAINE GROWTH HAUTEUR HEIGHT http://www.fao.org/aos/agrovoc#c_12199 http://www.fao.org/aos/agrovoc#c_13199 http://www.fao.org/aos/agrovoc#c_2328 http://www.fao.org/aos/agrovoc#c_2604 http://www.fao.org/aos/agrovoc#c_27527 http://www.fao.org/aos/agrovoc#c_2992 http://www.fao.org/aos/agrovoc#c_32817 http://www.fao.org/aos/agrovoc#c_3394 http://www.fao.org/aos/agrovoc#c_35126 http://www.fao.org/aos/agrovoc#c_3536 http://www.fao.org/aos/agrovoc#c_4825 http://www.fao.org/aos/agrovoc#c_6520 http://www.fao.org/aos/agrovoc#c_6618 http://www.fao.org/aos/agrovoc#c_6945 http://www.fao.org/aos/agrovoc#c_6946 http://www.fao.org/aos/agrovoc#c_7724 IMMUNOBLOTTING induced systemic resistance Life Sciences LIPOXIGENASA LIPOXYGENASE MILDEWS MILDIOU OIDIUM MILDIU Original Papers PENNISETUM GLAUCUM Plant Sciences PLANTULAS PLANTULE RESISTANCE AUX FACTEURS NUISIBLES RESISTANCE AUX MALADIES RESISTANCE TO INJURIOUS FACTORS RESISTENCIA A AGENTES DANINOS RESISTENCIA A LA ENFERMEDAD RNA SCLEROSPORA GRAMINICOLA SEEDLINGS SEEDS SEMILLA THIAMIN THIAMINE TIAMINA TRANSCRIPCION transcript accumulation TRANSCRIPTION
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Zusammenfassung:	Seeds of pearl millet (Pennisetum glaucum) susceptible cv. 7042S were treated with thiamine at 5, 10, 15, 20 and 25 mM concentrations, and growth promotion and downy mildew resistance were tested. Seed treatment with 20 mM thiamine resulted in 72 and 70 % disease protection under greenhouse and field conditions, respectively, and enhanced vegetative and reproductive growth parameters. Analysis of lipoxygenase (LOX) activity in inoculated pearl millet seedlings at different time intervals indicated that increased LOX activity was initiated at 3 h after inoculation (hai) and maximum activity was observed at 24 hai. Northern analysis showed that LOX mRNA transcript accumulation was higher in the resistant seedlings (cv. IP18292) than in susceptible seedlings. Thiamine seed treatment induces rapid LOX gene expression and results in significant disease protection against downy mildew disease.
ISSN:	0006-3134 1573-8264 1573-8264
DOI:	10.1007/s10535-011-0118-3