Microorganisms in Plant Growth and Development: Roles in Abiotic Stress Tolerance and Secondary Metabolites Secretion.

Crops aimed at feeding an exponentially growing population are often exposed to a variety of harsh environmental factors. Although plants have evolved ways of adjusting their metabolism and some have also been engineered to tolerate stressful environments, there is still a shortage of food supply. An alternative approach is to explore the possibility of using rhizosphere microorganisms in the mitigation of abiotic stress and hopefully improve food production.

[Immunological control in the system of epidemiological surveillance over infections with different mechanisms of causative agent transmission].

The results of immunological control of infections with different mechanisms of the transmission of their causative agents (diphtheria, measles, viral hepatitis, salmonellosis) for many years are summarized. About 25,000 serum samples taken from humans and more than 10,000 probes from agricultural animals have been studied in the passive hemagglutination test and more than 3,600 serum samples have been studied in the enzyme immunoassay for the presence viral hepatitis markers. Planned immunological control has ensured greater possibilities of the epidemiological diagnosis and prognostication of complications in the epidemic and epizootic situations.

[The specific prophylaxis of diphtheria in adults with adsorbed DT-m anatoxin].

The dependence of immune response on commonly observed immunity characteristics prior to immunization has been established on the basis of the study of the kinetics of immune response in adults receiving injections of adsorbed diphtheria-tetanus (DT) toxoid with reduced antigen content, both for routine immunization and on epidemiological indications. The necessity of the practical use of immunological screening for the differentiated approach to the choice of a suitable preparation (adsorbed diphtheria toxoid, adsorbed DT toxoid or adsorbed DT toxoid with reduced antigen content) and immunization schedule for adults, especially in epidemic foci, has been substantiated.

[Trends in the development of the epidemic process in salmonellosis caused by Salmonella typhimurium and Salmonella enteritidis].

The dynamics and structure of the epidemic process of Salmonella infections among the population of Perm in 1983-1988 was studied and the results of evaluation of antibiotic resistance of the dominating Salmonella species analyzed. The study revealed that a decrease in salmonellosis morbidity caused by S. typhimurium was associated with a limited circulation of anthroponotic (antibiotic-resistant) variants of Salmonellae and a relative increase in the proportion of zoonotic (antibiotic-sensitive) strains.

[Results of an epidemiological study of familial foci of salmonellosis in the Western Urals].

The study of 449 family foci of salmonellosis demonstrated the possibility of detecting cases of salmonellosis, not diagnosed by clinical and bacteriological methods, in the passive hemagglutination test. Such undetected Salmonella carriers, not observing the rules of personal hygiene, contributed to the contamination of household articles, foodstuffs and the environment. The formation of the family foci of salmonellosis was facilitated by the belated detection and hospitalization of salmonelloses cases, as well as by the inadequate observance of the rules for infant care and feeding.