Bacteria of the genus Bacillus and their lipopeptides enhance endurance of wheat plants to the greenbug aphid Schizaphis graminum rond

2021 ◽  
Author(s):  
V. Y. Alekseev ◽  
S. V. Veselova ◽  
S. D. Rumyantsev ◽  
G. F. Burkhanova ◽  
E. A. Cherepanova ◽  
...  
Keyword(s):  
Schizaphis Graminum ◽  
Genus Bacillus

scholarly journals Lipopeptide producing endophytic bacteria of the genus Bacillus regulate wheat resistance to cereal aphids

2020 ◽  
Author(s):  
S. V. Veselova ◽  
V. Yu. Alekseev ◽  
S.D. Rumyantsev ◽  
G.F. F. Burkhanova ◽  
E. A. Cherepanova ◽  
...  
Keyword(s):  
Indirect Effect ◽  
Endophytic Bacteria ◽  
Schizaphis Graminum ◽  
Systemic Resistance ◽  
Cereal Aphids ◽  
Genus Bacillus

We have shown the direct and indirect effect of lipopeptide-producing endophytic bacteria of the genus Bacillus on the viability of greenbug aphid Schizaphis graminum Rond. and the induction of systemic resistance in wheat plants.

PRODUCTION OF CYTASES ACTIVE ON BARLEY GUM BY BACTERIA OF THE GENUS BACILLUS

1953 ◽  
Vol 31 (1) ◽  
pp. 28-32 ◽  
Author(s):  
A. C. Blackwood
Keyword(s):  
Bacillus Subtilis ◽  
Enzymatic Activity ◽  
Nitrogen Source ◽  
Freeze Drying ◽  
Shake Flask ◽  
Sole Nitrogen Source ◽  
Genus Bacillus ◽  
Original Activity ◽  
Bacterial Cultures ◽  
Bacillus Genus

One hundred and fourteen bacterial cultures representing most of the species in the Bacillus genus were tested for the production of extracellular barley gum cytase. Assays were made on shake-flask cultures grown on a medium containing glucose and yeast extract. Although all the organisms had some enzymatic activity, certain strains of Bacillus subtilis gave the best yields of cytase. On a medium with asparagine as the sole nitrogen source even higher yields were obtained. The crude cytase preparations were stable and after freeze-drying most of the original activity remained.

Annual variation in strains of barley yellow dwarf virus in Manitoba, and the occurrence of greenbug-specific isolates

1969 ◽  
Vol 47 (8) ◽  
pp. 1277-1283 ◽  
Author(s):  
C. C. Gill
Keyword(s):  
Annual Variation ◽  
Barley Yellow Dwarf Virus ◽  
Rhopalosiphum Padi ◽  
Schizaphis Graminum ◽  
Yellow Dwarf ◽  
Dwarf Virus ◽  
Barley Yellow Dwarf ◽  
Efficient Vector ◽  
Yellow Dwarf Virus ◽  
High Degree

Seventeen isolates of the aphid-borne barley yellow dwarf virus (BYDV), collected in southern Manitoba in 1966, were transmitted from oats to oats most efficiently by Rhopalosiphum padi. They were transmitted also by Macrosiphum avenae and all but two were transmitted by Schizaphis graminum and Acyrthosiphon dirhodum. Most of these isolates were not transmitted by R. maidis.Only 3 of 25 isolates collected in 1967 were transmitted by the five species of aphids in a pattern similar to that of the isolates collected in 1966. Twenty of the remainder were transmitted with a moderate to high degree of specificity by R. maidis, R. padi, or S. graminum. Two of the latter isolates were transmitted only by S. graminum. When the transmissibility of one of the isolates, for which S. graminum was the most efficient vector, was examined more critically, both the relative and the specific efficiency of the three vectors varied with the age of the infection in the source plants, though S. graminum was always the most efficient vector.

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