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Davidian E.M.,All Russia Research Institute for Plant Protection
Entomological Review

Pauesia (Pauesia) eugenii Davidian, sp. n. is described from Irkutsk Province and Kunashir Island of Russia. New data on P. unilachni (Gahan, 1926), P. picta (Haliday, 1834), and P. laricis (Haliday, 1834) and a key to 8 species of the subgenus Pauesia are given. A new synonymy is established: P. akamatsukola Takada, 1968 = P. longicauda Chiriac, 1993, syn. n. © 2015, Pleiades Publishing, Inc. Source

Afanasenko O.S.,All Russia Research Institute for Plant Protection | Koziakov A.V.,All Russia Research Institute for Plant Protection | Hedlay P.E.,James Hutton Institute | Lashina N.M.,All Russia Research Institute for Plant Protection | And 4 more authors.
Russian Journal of Genetics: Applied Research

Net blotch of barley (Hordeum vulgare L.), caused by Pyrenophora teres f. teres, and spot blotch, caused by Cochliobolus sativus, are the most widespread and harmful diseases in the geographic range of the crop. Barley breeding for resistance to these diseases should employ large genetic diversity. The 11_11067 SNP marker was revealed on chromosome 6H position 58 cM in the double haploid (DH) population A developed by crossing the Ethiopian accession k-23874, highly resistant to P. teres f. teres, to the susceptible Pirkka cultivar. It was reliably (p < 0.05) associated with resistance to three P. teres f. teres isolates. In population B (Zernogradsky 813 (MR to C. sativus) Ranniy 1 (MR to P. teres f. teres), 11 QTL controlling resistance to 12 P. teres f. teres isolates were found on all barley chromosomes and 14 QTL for resistance to 12 C. sativus isolates, on all chromosomes except for 4H. For both pathogens, the revealed QTL were shown to be isolate-specific. The majority of the loci detected were mapped in the same intervals between SNP markers where QTL controlling resistance to P. teres f. teres and C. sativus had been found by other scientists. Four novel QTL controlling resistance to P. teres f. teres were found on chromosomes 1H, 4H, and 5H. Five novel QTL associated with resistance to C. sativus were found on chromosomes 2H, 3H, 5H, and 6H in DH population B. © 2015, Pleiades Publishing, Ltd. Source

Novikova I.I.,All Russia Research Institute for Plant Protection | Shenin Y.D.,All Russia Research Institute for Plant Protection
Applied Biochemistry and Microbiology

A metabolic complex, Gamair, has been isolated from Bacillus subtilis strain M-22, a producer of a biopreparation for plant protection from diseases of various etiologies. Gamair was shown to possess a broad spectrum of activity against phytopathogenic bacteria (including Pseudomonas corrugata, Erwinia carotovora, Clavibacter michiganensis subsp. michiganensis, and Xantomonas campestris pv. vesicatoria), and fungi (Fusarium, Verticullum, Ascochyta, Colletotrichum, Rhizoctonia, Sclerotinia, Septoria, and other genera). Using NMR and IR spectroscopy, it was shown that the complex of active compounds is a mixture of the following fractions: Gamair A (close to bacillin), and Gamair B-D (mediocin type hexaene-like) antibiotics. The chemical and biological properties of the above fractions were investigated. In field trials using tomato plants, it was demonstrated that the biological efficacy of Gamair against bacterial wilt, stem core necrosis, and vegetable's mild rot reached 70-90%, whereas the harvest increase was 25-35%. © 2011 Pleiades Publishing, Ltd. Source

Razdoburdin V.A.,All Russia Research Institute for Plant Protection | Sergeev G.E.,All Russia Research Institute for Plant Protection | Vasiliev S.V.,All Russia Research Institute for Plant Protection
Entomological Review

Distribution of spider mites over cucumber leaves is determined by the topical trophic specialization of the pest manifested in preference for the central leaf zone. After artificial infestation of leaves with female mites, the modified aggregated distribution of the pest depended on the number of mites on the leaf, the morpho-physiological state and stage of development of the leaf and the whole plant, and the cucumber cultivar. © 2014 Pleiades Publishing, Inc. Source

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