Co-inoculation of rhizobacteria promotes growth, yield, and nutrient contents in soybean and improves soil enzymes and nutrients under drought conditions.

Drought stress is the major abiotic factor limiting crop production. Co-inoculating crops with nitrogen fixing bacteria and plant growth-promoting rhizobacteria (PGPR) improves plant growth and increases drought tolerance in arid or semiarid areas. Soybean is a major source of high-quality protein and oil for humans.

[Explanation for the pyramid effect].

It was established that the dynamics of volatile compounds from samples placed inside chambers is affected by the shape of the chambers. The mechanisms of this effect were analyzed. It was shown that the experimental results obtained previously are consistent with the theory.

[Pyramid effect].

The effect of a model pyramid of Egyptian type on plants, aqueous solutions, and solids was studied. It was found that a presowing holding of dry barley seeds in the pyramid stimulated the growth of this plant. On the contrary, "pyramid" water, when used in sowing, suppressed the early growth of plants.

[Growth inhibition and induction of tumor cell death by phospholipase A2 and lipoxygenase inhibitors].

We studied the effect of arachidonic acid metabolism inhibitors in a wide concentration range on the proliferation and death of lympholeukemia cells P-388. Proliferation of the cells was estimated by metaphase frequency and the proportion of cells in S phase; cellular death was determined by their lysis, trypan blue staining, damaged nuclei, the proportion of cells with subdiploid DNA content, and DNA fragmentation. Low concentrations of phospholipase A2 and lipoxygenase inhibitors were shown to stimulate cell division, while higher concentrations inhibited it by blocking G1-S transition and inducing apoptotic cellular death.

[Cytotoxic and cytostatic effect of avermectines on tumor cells in vitro].

Effect of natural avermectin complex (aversectin C) and separate avermectins A1, A2, B1 and B2 in the cell culture of murine myeloma Ns/o, Erlich carcinoma ascites and human larynx carcinoma Hep-2 was investigated. It was shown that aversectin C within the concentrations of 0.1 to 1.