Divergent strategies of photoprotection in high-mountain plants

Planta ◽  
1998 ◽  
Vol 207 (2) ◽  
pp. 313-324 ◽  
Author(s):  
P. Streb ◽  
W. Shang ◽  
J. Feierabend ◽  
R. Bligny
Keyword(s):  
High Mountain ◽  
Mountain Plants

scholarly journals Photoprotective Strategies in Mediterranean High-Mountain Grasslands

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 137
Author(s):  
Rosina Magaña Ugarte ◽  
María Pilar Gómez-Serranillos ◽  
Adrián Escudero ◽  
Rosario G. Gavilán
Keyword(s):  
Seasonal Changes ◽  
Detrimental Effect ◽  
Ultraviolet B ◽  
High Mountain ◽  
Central Spain ◽  
Adverse Conditions ◽  
Optimal Functioning ◽  
Mountain Grasslands ◽  
Lutein Content ◽  
Mountain Plants

Albeit the remarkably high Ultraviolet B loads, high temperatures, and drought stress substantiate the need for efficient photoprotective strategies in Mediterranean high-mountain plants, these remain understudied. Considering the sensitivity of photosystems to extreme conditions, we evaluated an environmental gradient’s weight on the photoprotection of five high-mountain specialists from Central Spain. Diurnal and seasonal variations in chlorophyll, chlorophyll fluorescence, carotenoids, and xanthophylls in consecutive and climatically contrasting years were taken to evaluate the effect of the impending climate coarsening at the photosystem level. Our results revealed significant differences among species in the xanthophyll cycle functioning, acting either as a continuous photoprotective strategy enhancing photochemistry-steadiness; or prompted only to counteract the cumulative effects of atypically adverse conditions. The lutein cycle’s involvement is inferred from the high lutein content found in all species and elevations, acting as a sustained photoprotective strategy. These findings added to high de-epoxidation state (DEPS) and minor seasonal changes in the chlorophyll a/b ratio, infer the xanthophyll and Lutein cycles are crucial for upkeeping the photosystems’ optimal functioning in these plants heightening their photoprotective capacity during periods of more unfavorable conditions. Nevertheless, an atypically dry growing season’s detrimental effect infers the feasible surpassing of stress-thresholds and the precariousness of the communities’ functional diversity under climate change.

Selected Extracts from High Mountain Plants as Potential Sunscreens with Antioxidant Capacity

2021 ◽  
Author(s):  
Juan C. Mejía‐Giraldo ◽  
Cecilia Gallardo ◽  
Miguel A. Puertas‐Mejía
Keyword(s):  
Antioxidant Capacity ◽  
High Mountain ◽  
Mountain Plants

Effects of species traits on the genetic diversity of high-mountain plants: a multi-species study across the Alps and the Carpathians

2009 ◽  
Vol 18 (1) ◽  
pp. 78-87 ◽  
Author(s):  
Conny Thiel-Egenter ◽  
Felix Gugerli ◽  
Nadir Alvarez ◽  
Sabine Brodbeck ◽  
Elżbieta Cieślak ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Species Traits ◽  
High Mountain ◽  
The Carpathians ◽  
The Alps ◽  
Mountain Plants ◽  
Species Study

scholarly journals Contemporary habitat and floristic changes in the Sudeten Mts

2014 ◽  
Vol 69 (3) ◽  
pp. 215-222 ◽  
Author(s):  
Jerzy Fabiszewski ◽  
Teresa Brej
Keyword(s):  
Heavy Metals ◽  
Plant Species ◽  
Permanent Plots ◽  
High Mountain ◽  
Mountain Forests ◽  
Industrial Emissions ◽  
Ecological Conditions ◽  
Calcium And Magnesium ◽  
Mountain Vegetation ◽  
Mountain Plants

The authors present the view that in the Sudeten for fourty years paralelly eutrophication and acidification processes are taking place, as a result of industrial emissions. This view is based on results of bioindication studies on pollution and accumulation of sulphur, nitrogen and heavy metals. At the same time, after 30 years, vegetation and floristic changes were investigated on permanent plots on the Śnieżnik and in the Karkonosze Mts. In most habitats a decrease of pH over 1.0 has been recorded, even in areas with calcium bedrock. Acid rains containing a lot of nitrates contribute to the fertilization of most of the ecosystems. The yearly fall of total nitrogen in the Sudeten ranges from 38 kg in the Karkonosze, to 59 kg/ha on the Śnieżnik, of nitrates - from 380 to 900 ppm/year, and sulphur, on the average, 1300 ppm/year in the whole Sudeten. The acidification of soil causes the inaccessibility of alcaline elements (magnesium, calcium) and mobilization of harmful for plants aluminium. Overfertilization of habitats, the lack of calcium and magnesium and the excess of aluminium cause unfavourable alterations in all phytocenoses in the Sudeten. The high mountain forests are particularly suffering, but also the high mountain vegetation and above all the subalpine swards exposed to acid rains. Examples of plant species which adapt themselves to the new ecological conditions, and mountain plants which reduce their range are given. In general, the typical mountain flora and vegetation of the Sudeten is endangered in the existing ecological conditions.

Flower longevity and duration of pistil receptivity in high mountain plants

Flora ◽  
2010 ◽  
Vol 205 (6) ◽  
pp. 376-387 ◽  
Author(s):  
Gerlinde Steinacher ◽  
Johanna Wagner
Keyword(s):  
High Mountain ◽  
Flower Longevity ◽  
Mountain Plants

Extinction debt of high-mountain plants under twenty-first-century climate change

2012 ◽  
Vol 2 (8) ◽  
pp. 619-622 ◽  
Author(s):  
Stefan Dullinger ◽  
Andreas Gattringer ◽  
Wilfried Thuiller ◽  
Dietmar Moser ◽  
Niklaus E. Zimmermann ◽  
...  
Keyword(s):  
Climate Change ◽  
First Century ◽  
High Mountain ◽  
Extinction Debt ◽  
Twenty First Century ◽  
Mountain Plants

Survival types of high mountain plants under extreme temperatures

Flora ◽  
2010 ◽  
Vol 205 (1) ◽  
pp. 3-18 ◽  
Author(s):  
Walter Larcher ◽  
Christine Kainmüller ◽  
Johanna Wagner
Keyword(s):  
High Mountain ◽  
Extreme Temperatures ◽  
Mountain Plants
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