Publications by authors named "I E Zlobin"
Tree post-drought recovery: scenarios, regulatory mechanisms and ways to improve.
Biol Rev Camb Philos Soc
October 2024
Efficient post-drought recovery of growth and assimilation enables a plant to return to its undisturbed state and functioning. Unlike annual plants, trees suffer not only from the current drought, but also from cumulative impacts of consecutive water stresses which cause adverse legacy effects on survival and performance. This review provides an integrated assessment of ecological, physiological and molecular evidence on the recovery of growth and photosynthesis in trees, with a view to informing the breeding of trees with a better ability to recover from water stress.
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- The study examined how different types of light (white, red, and far-red) affect the growth of two-year-old Scots pine plants under greenhouse conditions.
- Red light (RL) and combined red and far-red light (RL+FRL) promoted increases in xylem cells, transpiration rates, and the expression of genes linked to plant growth hormones like auxins and brassinosteroids.
- Although increased light intensity boosted the levels of certain secondary metabolites, such as proanthocyanidins and catechins, the combined light treatments mainly enhanced physical development instead of enhancing photosynthesis or metabolite accumulation.
The aim of this study was to investigate the effect of light quality (white fluorescent light, WFL, containing UV components), red light (RL, 660 nm), blue light (BL, 450 nm), and white LED light (WL, 450 + 580 nm) on the components of the cellular antioxidant system in L. in needles, roots, and hypocotyls, focusing on the accumulation of key secondary metabolites and the expression of related genes. The qualitative and quantitative composition of carotenoids; the content of the main photosynthetic pigments, phenolic compounds, flavonoids (catechins, proanthocyanidins, anthocyanins), ascorbate, and glutathione; the activity of the main antioxidant enzymes; the content of hydrogen peroxide; and the intensity of lipid peroxidation (MDA and 4-HNE contents) were determined.
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- Forest trees like Scots pine and Norway spruce face many challenges and need special systems to protect themselves from stress.
- The study looked at how these trees respond to water shortages and if they can "remember" past stress to help them react better in the future.
- The results showed that while spruce trees showed some signs of stress memory by changing the levels of certain protective compounds, the pine trees didn’t seem to respond to water stress at all.
Melatonin is among one of the promising agents able to protect agricultural plants from the adverse action of different stressors, including salinity. We aimed to investigate the effects of melatonin priming (0.1, 1.
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