Effect of UV Radiation and Other Abiotic Stress Factors on DNA of Different Wild Plant Species Grown in Three Successive Seasons in Alpine and Subalpine Regions

Gateva, Svetla; Jovtchev, Gabriele; Angelova, Tsveta; Nonova, Tzvetana; Tyutyundzhiev, Nikolay; Geleva, Elena G.; Katrandzhiev, Kostadin; Nikolova, Nina; Dimitrov, Dimitar; Angelov, Ch.

doi:10.32604/phyton.2022.016397

Cited by 4 publications

(4 citation statements)

References 69 publications

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“…In our previous three years study (from 2017 to 2019) it was found that the increase in the intensity of UV radiation with height is clearly visible [13]. Based on our previous data for UV parameters for period of 2017-2019 it could be suggested that change of UV irradiation for one year is insignificant (about 1%).…”

Section: Radiation Conditions At Experimental Sitesmentioning

confidence: 83%

“…Information for these parameters was obtained from the SoDa database (provider: MINES ParisTech/Armines/Transvalor (France) (http://www.soda-pro.com) derived from broadband HelioClim-3 v5 Solar Irradiance (satellite data). Average daily values for five successive months (May, June, July, August and September) are calculated [13].…”

Section: Radiation Conditions At Experimental Sitesmentioning

confidence: 99%

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Does Altitude Have an Effect on Pigment Content of Wild Growing Plants in Rila Mountain?

Angelova¹,

Angelov²,

Tyutyundzhiev³

et al. 2021

RAD Conference Proceedings

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Rila Mountain is the highest mountain on the Balkan Peninsula and is characterized with specific microclimate. It has been revealed that with the increase of the altitude, the differences in environmental conditions change at a great extent. In mountain conditions plants have to cope with combined environmental factors such as altitude, temperature, prolonged UV irradiation, and etc. The aim of this study is to assess whether pigment content in wild growing plant species is altitudes dependent. Five wild species, characteristic of the ecosystems in Rila Mountain: Fragaria vesca L. (Rosaceae), Myosotis sylvatica Ehrh. (Boraginaceae), Achillea millefolium L. (Asteraceae), Epilobium angustifolium L. (Onagraceae) and Dactylis glomerata L. (Poaceae) were used as plant material. Plants were collected from three different altitudes (Sofia-595 m; Rila Mountain-1500 m a.s.l. and 1782 m a.s.l.) in July-August in growing season of 2020. Sofia was chosen as control altitude. Pigment content was applied as endpoint. Our data showed that the levels of total chlorophylls, chl. a, chl. b and total carotenoids for plants growing at 1500 m a.s.l. were lower or similar to those measured at Sofia altitude for F. vesca, M. sylvatica, A. millefolium, E. angustifolium and D. glomerata L. There is no change in chlorophyll a/b ratio detected in plants at 1500 m a.s.l. altitude and 1782 m a.s.l. in the five investigated species. Based on our results it could be reveal the adaptation mechanism and survival strategies of F. vesca, M. sylvatica, A. millefolium, E. angustifolium and D. glomerata under complex environmental stresses in both mountain altitudes. On the other hand no change in the chlorophyll a/b ratio could be an indication that altitudes have no permanent damage on the leaf photochemical system. It is known that chlorophyll content in plants is an indicator of their response to the habitat, weather, anthropogenic conditions. Because of the fact that in mountain conditions the effect of altitude is combined with other abiotic factors and that pigment content is very variable depending on many factors further studies using other plant species are needed for better understanding of the mechanisms of interaction between factors and plant response.

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Section: Radiation Conditions At Experimental Sitesmentioning

confidence: 83%

Section: Radiation Conditions At Experimental Sitesmentioning

confidence: 99%

Does Altitude Have an Effect on Pigment Content of Wild Growing Plants in Rila Mountain?

Angelova¹,

Angelov²,

Tyutyundzhiev³

et al. 2021

RAD Conference Proceedings

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show abstract

“…Our previous study showed a visible tendency to increase the intensity of UV radiation with height for a period of three years (2017-2019) [9]. It was suggested that the change in UV irradiation for one year is insignificant (about 1%).…”

Section: Radiation Conditions At the Experimental Sitementioning

confidence: 94%

Assessment of Pigment Content on Wild Growing Plants in Moussala Peak

Angelova¹,

Tyutyundzhiev²,

Angelov³

et al. 2022

RAD Conference Proceedings

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The highest peak on Rila Mountain is Moussala (2925 m a. s. l.). Its climate conditions depend on the geographic location, peculiarities of relief, and atmospheric circulation, and a specific microclimate is formed. In alpine regions, conditions become extremely variable with the increase in altitude. Plants that are growing in alpine conditions are exposed to the combined impact of environmental factors such as altitude, prolonged UV irradiation, low temperature, etc. This study aims to compare and assess whether the pigment content of wild-growing species at Moussala peak changes in the two following years. As plant material was used following species: Saxifraga cymosa Waldst & Kit (Saxifragaceae), Anthemis carpatica Waldst. & Kit. ex Willd. (Asteraceae), Geum repens (Rosaceae), Doronicum columnae Ten.(Asteraceae), Achillea clusiana L. (Asteraceae), Allium sibiricum L. (Liliaceae) and Festuca valida (R.Uechtr.) Pénzes (Poaceae). Plants were collected from Moussala Peak in July-August, in two successive growing seasons of 2020 and 2021. Data for the average daily value of "Erythemal UV irradiance" response (UVE) for the experimental site at Rila Mountain (2925 m a. s. l.) were measured with a UV sensor. Average daily values for July and August are calculated. Photosynthetic pigment content was applied as an endpoint. It was obtained that genotype response varies depending on the environmental conditions of the studied year. Data for UV irradiation at Moussala peak for a period of two following years 2020-2021 show insignificant change. Radiation conditions at Moussala peak show that both years differed in UVE response, but this small change of UV irradiation for one year is probably insignificant. The levels of total chlorophylls, chl. a, chl. b and total carotenoids for most of the studied alpine plants measured for 2021 were insignificantly higher in comparison with those measured for 2020. Only for S. cymosa were evaluated significantly higher pigment levels in 2021 than those in 2020. The chlorophyll a/b ratio was stable for all studied wild species growing at this altitude. The chlorophyll a/b ratio also varies depending on the studied genotype and different radiation conditions of the years studied. Our preliminary data indicate a change in pigment content depending on the different environmental conditions in the respective years and alpine plants examined. Data for radiation conditions at Moussala peak show that both years differed in UVE response, but this small change of UV irradiation for one year is probably insignificant. Changes in pigment content in some of the studied alpine genotypes propose different adaptive strategies to overcome the environmental stress at this altitude. Because alpine conditions at Moussala peak are related to the various impacts of extreme environmental factors on the pigment content of plants, further studies are needed to understand the mechanisms of interaction of factors and plant response in the long-term aspect of time.

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“…Across a diversity of plant species from alpine and subalpine zones in Bulgaria, improved photoprotection has been found to effectively prevent greater DNA damage caused by increased UV radiation at higher altitudes. These mechanisms were sufficiently effective since plants growing at the highest elevations had fewer UV-induced DNA dimers than those at lower elevations, with grasses (Family Poaceae) least susceptible to UV-induced DNA damage among a wide diversity of plant families tested [ 249 ]. Nevertheless, as species migrate to high elevations, more resources may be allocated towards protection against UV radiation, and this could in turn divert resources away from growth, which could then reduce competitive ability [ 250 , 251 ].…”

Section: Species Distributions and Biodiversitymentioning

confidence: 99%

Interactive effects of changes in UV radiation and climate on terrestrial ecosystems, biogeochemical cycles, and feedbacks to the climate system

Barnes

Robson

Zepp

et al. 2023

Photochem Photobiol Sci

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Terrestrial organisms and ecosystems are being exposed to new and rapidly changing combinations of solar UV radiation and other environmental factors because of ongoing changes in stratospheric ozone and climate. In this Quadrennial Assessment, we examine the interactive effects of changes in stratospheric ozone, UV radiation and climate on terrestrial ecosystems and biogeochemical cycles in the context of the Montreal Protocol. We specifically assess effects on terrestrial organisms, agriculture and food supply, biodiversity, ecosystem services and feedbacks to the climate system. Emphasis is placed on the role of extreme climate events in altering the exposure to UV radiation of organisms and ecosystems and the potential effects on biodiversity. We also address the responses of plants to increased temporal variability in solar UV radiation, the interactive effects of UV radiation and other climate change factors (e.g. drought, temperature) on crops, and the role of UV radiation in driving the breakdown of organic matter from dead plant material (i.e. litter) and biocides (pesticides and herbicides). Our assessment indicates that UV radiation and climate interact in various ways to affect the structure and function of terrestrial ecosystems, and that by protecting the ozone layer, the Montreal Protocol continues to play a vital role in maintaining healthy, diverse ecosystems on land that sustain life on Earth. Furthermore, the Montreal Protocol and its Kigali Amendment are mitigating some of the negative environmental consequences of climate change by limiting the emissions of greenhouse gases and protecting the carbon sequestration potential of vegetation and the terrestrial carbon pool. Graphical abstract

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Effect of UV Radiation and Other Abiotic Stress Factors on DNA of Different Wild Plant Species Grown in Three Successive Seasons in Alpine and Subalpine Regions

Cited by 4 publications

References 69 publications

Does Altitude Have an Effect on Pigment Content of Wild Growing Plants in Rila Mountain?

Does Altitude Have an Effect on Pigment Content of Wild Growing Plants in Rila Mountain?

Assessment of Pigment Content on Wild Growing Plants in Moussala Peak

Interactive effects of changes in UV radiation and climate on terrestrial ecosystems, biogeochemical cycles, and feedbacks to the climate system

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