+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Studies of tolerance induction in wheat infested with powdery mildew or aphids

Zeitschrift fuer Pflanzenkrankheiten und Pflanzenschutz 103(3): 300-309
Studies of tolerance induction in wheat infested with powdery mildew or aphids
The aim of this study was to investigate and to compare the possibilities and modes of action of tolerance induction with one single inducer towards different parasites. With an inducer produced by a Bacillus subtilis strain (B 50), tolerance could be induced in wheat infested by Erysiphe graminis as well as by Rhopalosiphum padi. By similar infestation density on treated and untreated plants, tolerance was shown through increased yield. Tolerance induction was connected with changes in the sinksource-relations of infested plants: the attractive activity of the 'pathological' sink was weakened in favour of the natural sink, resulting in a higher biomass production. Hence the relation between infestation severity and detrimental effect was uncoupled. These effects applied for both the fungus as well as for the aphid. With regard to the tolerance induction with our inducer, no taxonomically defined parasite-related specificity exists. Partial causes of those effects may be considerable changes in the plant's hormone balance. Especially the positive influence on endosperm cells after aphid infestation can be related to an increased auxin content.

(PDF 0-2 workdays service: $29.90)

Accession: 003283119

Related references

Influence of powdery mildew on cereal aphids in wheat. Journal of Plant Protection Research 42(3): 289-298, 2002

A study on wheat powdery mildew in Bulgaria. II. Physiological races of wheat powdery mildew (Erysiphe graminis D.C. f. sp. tritici (Marchal)) in the years 1968, 1969 and 1970. Comptes Rendus de l' Academie Agricole Georgi Dimitrov 8(3): 49-54, 1975

Top Cop with sulfur for control of powdery mildew of wheat, 1981 Wheat (Triticum aestivum Coker 68-15), powdery mildew; Erysiphe graminis f.sp. tritici. Fungicide and nematicide tests results American Phytopathological Society7(37): 118, 1982

Yield loss due to cereal aphids and powdery mildew in winter wheat. Mededelingen van de Faculteit Landbouwwetenschappen Rijksuniversiteit Gent 48(4): 1159-1168, 1983

Creation of new wheat germplasm resources resistant to powdery mildew using materials of near affinity. (2). Introduction of powdery mildew resistance genes from the amphiploid Triticum aestivum-Haynaldia villosa into common wheat. Journal of Jiangsu Agricultural College 16(3): 9-14, 1995

Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance. Plos One 7(10): E46333-E46333, 2013

Side effects of herbicidal urea- and triazine-derivatives on wheat infested with Erysiphe graminis f.sp. tritici. II. Physiological and biochemical studies on the causes of the indirect side effects of herbicides on powdery mildew infestation. Phytopathologische Zeitschrift 95(2): 193-209, 1979

The effects of host carbon dioxide, nitrogen and water supply on the infection of wheat by powdery mildew and aphids. Plant Cell & Environment 16(6): 687-694, 1993

A study of powdery mildew of wheat in Bulgaria. I. Physiological races of powdery mildew (Erysiphe graminis D.C. f. sp. tritici (Marchal)) in wheat in Bulgaria in the 1966-67 period. Vtori simp mlad nauch rabotnitsi sel stop, 8-10 noem 1969 g: 65-72, 1971

The control basis of wheat powdery mildew. XII. Wheat powdery mildew research technology. Journal of Henan Agricultural Sciences ( 12): 15-19, 1998