Response of winter oilseed rape to imitated temperature fluctuations in autumn-winter period

Foliar Application of Polyamines Modulates Winter Oilseed Rape Responses to Increasing Cold

“…Cold disrupts the membrane and disturbs its activity. In our study, the increasing cold treatment (from −1 to −3 • C, two days) resulted in reduced H + -ATPase activity in the A and N winter oilseed rape seedlings; earlier, we found that under the increasing cold to −7 • C, the activity of this enzyme decreased more than two-fold [16]. PAs are known as polycations that interact with cell membrane phospholipids and significantly influence membrane stability, prevent cytolysis, and improve cold resistance [37,55].…”

“…Low temperature negatively affects plant growth, development, and survival [11,16,56]. Exogenous application of physiologically active substances can enhance stress resistance of plants [13,57,58].…”

“…Under low temperature, ethylene emissions increase in grapevine, tobacco, tomato, and winter rye [2,11,28], while they decrease in cold-treated Arabidopsis [25]. In non-acclimated winter oilseed rape, emissions have been shown to increase, while they are more stable in acclimated plants [16]. What is more, the increased ethylene level under low temperature is thought to be a sign of damage in sensitive plants [24][25][26].…”

“…Other physiological traits involved in the response of plants to increasing cold stress could be the activity of the plant cell membrane H + -ATPase. The changes in ATPase activity following cold acclimation and cold stress have been observed by authors of [16,[20][21][22][23]. The H + -ATPase is very sensitive to cold stress and closely related to cell membrane defense from injury.…”

“…The amino acid proline is thought to be one of the biomarkers in plant response to cold [15,16]. Proline plays several major roles during cold stress.…”