Today, the resistance of plants to stress is one of the most basic and important problems. Plants are sufficiently resistant to oxidative disorders that occur with sudden changes in the physiological state of the organism. This suggests that plant cells have an antioxidant system that can protect against oxygen radicals and singlet oxygen. They are different from animals that have an immune system. The article describes the state of the antioxidant system of the Platanus orientalis tree in the urban semiarid zone from June to September. In addition to the impact of climatic conditions, the impact of an additional man-made stress factor in the form of a highway was also assessed. It is known that all living organisms have the ability to adapt to biotic and abiotic environmental factors and protect themselves from adverse conditions. The article describes the state of the antioxidant system of the plane tree plant growing in Uzbekistan in the summer. During the season, the amount of malondialdehyde and proline was studied.

Stachybotrys chartarum produces a number of low molecular weight compounds. Column chromatography of the latter isolated the nitrogen-containing compound 3-methoxystachibotrin. The structure of 13,3-dimethoxystachibotrin was established on the basis of chemical transformations using the data of ЯМР¹H, ¹³C, 2МЯМР¹H-¹H, ¹H -¹³C chemical shift correlations (COSY), long-range ¹H -¹³C interaction (НМВС) correlation, NOE measurements in a rotating coordinate system (ROESY), IR and mass- spectra of electron impact.

We researched the impact of inorganic salt focus on the in vitro organogenesis of spearmint (Mentha spicata L.) by utilizing Murashige and Skoog culture vehicle of various strength (full, half-and quarter strength). The biggest number of shoots and roots actuated per explant (3.5 and 10, individually), as well as the most extreme normal shoot length (16 cm) was seen on half strength medium. The greatest leaf number (35 for every explant) and normal root length (7 cm) were related with recovery on full medium. The most noteworthy normal phenolic content was seen on shoot removes (7.20 mg/g f.w.) and root separates (5.93 mg/g f.w.) refined onto quarter and half strength medium, individually. The strength of the way of life medium was contrarily corresponded with the cell reinforcement action of plant extricates. Thusly, for spearmint organogenesis, half strength MS medium offers a split the difference between ideal development in vitro and cancer prevention agent phenolic gathering.