Subtropical and ornamental horticulture
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THE EFFECT OF SALICYLIC ACID ON CELL MEMBRANE STABILITY IN IN VITRO MICROPROPAGATED TEA PLANTS UNDER COLD STRESS

Year:
2019
The authors:
Samarina L. S., Gvasaliya M. V., Maluykova L. S., Malyarovskaya V. I., Rakhmangulov R. S., Koninskaya N. G., Burtovoi A. V., Velikiy A. V.
DOI:
10.31360/2225-3068-2019-69-110-117
Page numbers:
110 - 117
Keywords:
Camellia sinensis (L.) Kuntze, cold stress, electrolyte output, electrical conductivity, salicylic acid.

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Cold stress is an important factor limiting growth and yield of subtropical crops in the world, especially in the Foothills of Krasnodar region and in the Republic of Adygea. Salicylic acid is involved in the regulation of many physiological processes in plants, playing an important role in the regulation of water potential under abiotic stress, including cold. This paper studied the effect of exogenous salicylic acid on cell membrane stability and damage degree of tea leaf microshoots during the induction of cold stress in vitro. It was found that low positive temperatures (+2 о C) significantly increased the yield of electrolytes, reducing the stability of cell membranes in tea leaves. The positive role of salicylic acid (50 mg/l) was revealed in maintaining the structural and functional membrane stability while its introduction into the nutrient medium. Also it was noted that salicylic acid applied in a higher concentration (100 mg/g) had a destructive effect on the membrane components state.
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