Josef Hájek

Phone: +420 54949 4016

Research / Main research interests:
(1) Stress physiology of lichens, namely to their photosynthetic responses to low temperature, (2) high radiation and to low water availability, (3) Chlorophyll fluorescence methods in photosynthesis measurements, (4) Gazometric methods in photosynthesis measurements, (5) Effects of irradiance, temperature, nitrogen on photosynthesis, (6) Photosynthesis under low temperature, (7) Ecophysiology of photosynthesis in lichens

Main publications:

Hájek, J., Hojdová, A., Trnková, K., Váczi, P., Bednaříková, M., & Barták, M. (2021): Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature. Photosynthetica, 59(1): 95-105. doi: 10.32615/ps.2021.002.
Barták, M., Hájek, J., Orekhova, A., Villagra, J., Marín, C., Palfner, G., Casanova-Katny, A. (2021): Inhibition of primary photosynthesis in desiccating Antarctic lichens differing in their photobionts, thallus morphology, and spectral properties. Microorganisms, 9(4): 818. doi: 10.3390/microorganisms 9040818.
Mishra, K. B., Vítek, P., Mishra, A., Hájek, J., Barták, M. (2020): Chlorophyll a fluorescence and Raman spectroscopy can monitor activation/deactivation of photosynthesis and carotenoids in Antarctic lichens. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 239: 118458. doi: 10.1016/j.saa.2020.118458.

Hájek J., Váczi P., Barták M., Jahnová L. (2012): Interspecific differences in cryoresistance of lichen symbiotic algae of genus Trebouxia assessed by cell viability and chlorophyll fluorescence. Cryobiology, 64 (3): 215-222.
Hájek J., Barták M., Dubová J. (2006): Inhibition of photosynthetic processes in foliose lichens induced by temperature and osmotic stress. Biologia Plantarum, 50 (4): 624-634.