Pigment Content of Photosynthetic Apparatus of Green Algae (Chlorophyta) - the Photobionts of Lichens

Voytsekhovich, Anna; Kashevarov, G.P.

doi:10.1615/interjalgae.v12.i3.60

Cited by 8 publications

(7 citation statements)

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“…3C, D, E, F and 4F). These crystals are accumulated in the chloroplasts, to prevent the photodamage of the chlorophyll [25][26][27][28][29]34]. The formation of β-carotene crystals (orange-red) masks the real green color of the photosynthetic pigments of the algae, chlorophyll, giving as a result a red colored biofilm, instead of a green colored colonization.…”

Section: Point-by-point and Raman Imaging On Red Biofilmsmentioning

confidence: 99%

“…The formation of β-carotene crystals (orange-red) masks the real green color of the photosynthetic pigments of the algae, chlorophyll, giving as a result a red colored biofilm, instead of a green colored colonization. Apart from β-carotene, astaxanthine was also identified in Trentepohlia algae [34]. The algae also excrete this biogenic pigment to protect itself against UV-radiation.…”

Section: Point-by-point and Raman Imaging On Red Biofilmsmentioning

confidence: 99%

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Characterization of the main colonizer and biogenic pigments present in the red biofilm from La Galea Fortress sandstone by means of microscopic observations and Raman imaging

Morillas

Maguregui

Marcaida

et al. 2015

Microchemical Journal

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Section: Point-by-point and Raman Imaging On Red Biofilmsmentioning

confidence: 99%

Section: Point-by-point and Raman Imaging On Red Biofilmsmentioning

confidence: 99%

Characterization of the main colonizer and biogenic pigments present in the red biofilm from La Galea Fortress sandstone by means of microscopic observations and Raman imaging

Morillas

Maguregui

Marcaida

et al. 2015

Microchemical Journal

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“…Photo‐ and mycobionts unequally depend on each other. The extracellularly located photobionts supply the heterotrophic mycobionts with photosynthetic carbon (Nash, 2008) but are sensitive to UV radiation, which can harm the algal photosystem and, thus, the entire symbiosis (Voytsekhovich & Kashevarov, 2010). Several studies proposed the type of photobiont to be important for the environmental response and spatial distribution of lichens (Aptroot & van Herk, 2007; Marini et al, 2011; Matos et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…We furthermore included trentepohlialean lichens as a control group, which do not sensitively depend on the UV protection by lichen substances and should therefore not show such close or contrasting dependencies as discussed above. In this study, we focussed on ultraviolet‐B (UV‐B) radiation (wavelengths of 280–315 nm) because strong evidence exists for adverse effects of UV‐B radiation on the physiology, distribution and population dynamics of numerous organisms including lichens (Gaya et al 2015; Gauslaa & Ustvedt, 2003; Voytsekhovich & Kashevarov, 2010; Beckmann et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Chemical properties of key metabolites determine the global distribution of lichens

et al. 2021

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In lichen symbioses, fungal secondary metabolites provide UV protection on which lichen algae such as trebouxiophycean green algae—the most prominent group of photobionts in lichen symbioses—sensitively depend. These metabolites differ in their UV absorbance capability and solvability, and thus vary in their propensity of being leached from the lichen body in humid and warm environments, with still unknown implications for the global distribution of lichens. In this study covering more than 10,000 lichenised fungal species, we show that the occurrence of fungal‐derived metabolites in combination with their UV absorbance capability and their probability of being leached in warm and humid environments are important eco‐evolutionary drivers of global lichen distribution. Fungal‐derived UV protection seems to represent an indirect environmental adaptation in which the lichen fungus invests to protect the trebouxiophycean photobiont from high UV radiation in warm and humid climates and, by doing this, secures its carbon source.

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“…Rindi et al [29] reported the presence of abundant -carotene and hematochrome which are responsible for imparting colour to the group Trentepohliales. Voytsekhovich and Kashevarov [30] analysed the pigments chlorophylls 1-, b-, -carotene and xanthophylls in Trentepohlia umbrina and reported low chlorophyll content compared to carotenoid content. Mukherjee et al [31] reported the seasonal variation of carotenoids in two species of Trentepohlia, T. aurea growing on walls and T. cucullata growing on tree bark, where carotenoids content increased severalfold in winter compared to that in summer.…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Variation of Carotenoids in Four Species ofTrentepohlia(Trentepohliales, Chlorophyta)

Kharkongor

Ramanujam

2015

Journal of Botany

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Trentepohlia Martius, a dominant green subaerial alga, grows abundantly in Shillong and imparts the yellow, red, and orange colours to most of the tree barks, walls, rocks, and electric poles because of high accumulation of carotenoids in their filaments. This study emphasised the seasonal changes in carotenoid content amongst four different species of Trentepohlia, that is, T. diffracta, T. arborum, T. umbrina, and T. abietina, collected from four different substrata, that is, wall, rock, electric pole, and three types of tree bark (smooth, fissured, and rough). Quantitative estimation of different carotenoids, namely, β-cryptoxanthin, lutein, and β-carotene, from HPLC chromatogram peak showed a significant seasonal variation in all of the four species and β-carotene was threefold more in winter compared to summer. Amongst the selected species, T. diffracta collected from wall contained the highest amount of β-carotene both in summer and in winter, followed by T. arborum from rock and T. abietina from bark, and least amount was in T. umbrina collected from electric pole. Comparing the carotenoid content in Trentepohlia abietina growing in different types of barks, sample from smooth bark had the highest amount of carotenoids both in summer and in winter, followed by the sample from rough bark, and lowest amount was noted in fissured bark.

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Pigment Content of Photosynthetic Apparatus of Green Algae (Chlorophyta) - the Photobionts of Lichens

Cited by 8 publications

References 0 publications

Characterization of the main colonizer and biogenic pigments present in the red biofilm from La Galea Fortress sandstone by means of microscopic observations and Raman imaging

Characterization of the main colonizer and biogenic pigments present in the red biofilm from La Galea Fortress sandstone by means of microscopic observations and Raman imaging

Chemical properties of key metabolites determine the global distribution of lichens

Spatial and Temporal Variation of Carotenoids in Four Species ofTrentepohlia(Trentepohliales, Chlorophyta)

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