Effects of UV radiation on optimum quantum yield and sunscreen contents in members of the genera Interfilum, Klebsormidium, Hormidiella and Entransia (Klebsormidiophyceae, Streptophyta)
Effects of UV radiation on optimum quantum yield and sunscreen contents in members of the genera Interfilum, Klebsormidium, Hormidiella and Entransia (Klebsormidiophyceae, Streptophyta)
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紫外线辐射对 Interfilum、Klebsormidium、Hormidiella 和 Entransia(Klebsormidiophyceae、Streptophyta)属成员的最佳量子产率和防晒剂含量的影响
DOI:
10.1080/09670262.2015.1031190
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发表时间:
2015
影响因子:
2.4
通讯作者:
Karsten
中科院分区:
文献类型:
--
作者:
Kitzing;Karsten
Many members of the Klebsormidiophyceae typically occur in terrestrial habitats where they are exposed to ultraviolet radiation (UVR). To evaluate the extent of tolerance to this waveband, 32 strains of the generaEntransia,Hormidiella,InterfilumandKlebsormidiumwere exposed to identical artificial UVR. The respective response patterns were determined in terms of optimum quantum yield of PSII as well as the capability to synthesize and accumulate mycosporine-like amino acids (MAAs) as sunscreens. After exposure to UVR most of the investigated isolates ofHormidiella,InterfilumandKlebsormidiumexhibited only a moderate or no decrease in optimum quantum yield. In contrast, both isolates ofEntransiashowed strong photoinhibition. These photosynthetic activity data are well reflected in the biochemical capability to synthesize MAAs. With the exception of bothEntransiastrains, where not even traces of MAAs could be detected, all other isolates ofHormidiella,InterfilumandKlebsormidiumaccumulated UV-absorbing compounds after UVR exposure. WhileInterfilumandKlebsormidiumcontained the same putative MAA with an absorption maximum at 324 nm,Hormidiella attenuatashowed another putative MAA with an absorption maximum at 325 nm. In addition, both compounds exhibited different retention times during HPLC analysis, suggesting their chemical structure must be different. All data indicated a generally high UVR tolerance inHormidiella,InterfilumandKlebsormidiumwhich explains well their aeroterrestrial lifestyle.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
U. Karsten;C. Lütz;A. Holzinger
通讯作者:
A. Holzinger
DOI:
10.1201/9781420027877.ch43
发表时间:
2005
期刊:
--
影响因子:
--
作者:
I. Vass;C. Sicora
通讯作者:
I. Vass;C. Sicora
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
K. Vanwinkle‐swift;W. Rickoll
通讯作者:
W. Rickoll
影响因子:
2.6
作者:
A. Subrahmanyan
通讯作者:
A. Subrahmanyan
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Frauke Pescheck;K. Bischof;W. Bilger
通讯作者:
W. Bilger