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2. Growth irradiance affects ureide accumulation and tolerance to photoinhibition in Eutrema salsugineum (Thellungiella salsuginea)
- Creator:
- Malik, V. M., Lobo, J. M., Stewart, C., Irani, S., Todd, C. D., and Gray, G. R.
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- fotosyntéza, photosynthesis, acclimation, allantoin, antioxidant, reactive oxygen species, 2, and 581
- Language:
- Multiple languages
- Description:
- Plants are able to acclimate to their growth light environments by utilizing a number of short- and long-term mechanisms. One strategy is to prevent accumulation of excess reactive oxygen species that can lead to photoinhibition of photosynthesis. Ureides, generated from purine degradation, have been proposed as antioxidants and involved in certain abiotic stress responses. Eutrema salsugineum (Thellungiella salsuginea) is an extremophilic plant known to exhibit a high degree of tolerance to a variety of abiotic stresses that invariably generate reactive oxygen species. In the present study we have investigated the possible role of the ureide metabolic pathway during acclimation to growth irradiance and its conference of tolerance to photoinhibition in Eutrema. Ureide accumulation was greater under high light growth which also conferred tolerance to photoinhibition at low temperature as measured by the maximal quantum yield of PSII photochemistry. This may represent an adaptive plastic response contributing to the extreme tolerance exhibited by this plant. Our results would provide evidence that ureide accumulation may be involved in abiotic stress as another defence mechanism in response to oxidative stress., V. M. Malik, J. M. Lobo, C. Stewart, S. Irani, C. D. Todd, G. R. Gray., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. New species of Cryptosporidium (Apicomplexa: Cryptosporidiidae) from lizards
- Creator:
- Koudela, Břetislav and Modrý, David
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Reptilia, Sauria, Cryptosporidium saurophilum sp, n., and transmission studies
- Language:
- English
- Description:
- A new Cryptosporidium species, C. saurophilum, is described from Schneider’s skinks Eumeces schneidert Daudin, 1802. Oocysts were fully sporulated in fresh faeces and measured 5.0 x 4.7 pm (4.4-5.6 x 4.2-5.2 pm). The new species differs from C. serpentis Levine, 1980 by having smaller oocysts, developing in a different location of intestine, and by the inability to infect snakes.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
4. Srovnávací studie slovanské věty
- Creator:
- Štícha, František
- Format:
- Type:
- model:internalpart and TEXT
- Language:
- Czech
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public