Ecophysiological features of polar soil unicellular microalgae

0525242 - BÚ 2021 RIV US eng J - Journal Article
Shukla, S. P. - Kvíderová, Jana - Adamec, Lubomír - Elster, Josef
Ecophysiological features of polar soil unicellular microalgae.
Journal of Phycology. Roč. 56, č. 2 (2020), s. 481-495. ISSN 0022-3646. E-ISSN 1529-8817
Research Infrastructure: CzechPolar2 - 90078
Institutional support: RVO:67985939
Keywords : growth rate * dark respiration * net photosynthesis
OECD category: Plant sciences, botany
Impact factor: 2.923, year: 2020
Method of publishing: Limited access

To select prospective strains for future low-temperature biotechnology in polar regions, temperature and irradiance of growth requirements (Q10 and Ea) of 10 polar soil unicellular strains were evaluated. In terms of temperature, three groups of strains were recognized: (i) cold-preferring where temperature optima ranged between 10.1 and 18.4°C, growth rate 0.252 and 0.344 d-1, (ii) cold- and warm-tolerating with optima above 10°C and growth rate 0.162–0.341 d-1, and (iii) warm-preferring temperatures above 20°C and growth rate 0.249–0.357 d-1. Their light requirements were low. Mean values Q10 for specific growth rate ranged from 0.7 to 3.1. The lowest Ea values were observed on cold-preferring and the highest in the warm-preferring strains. One strain from each temperature group was selected for PN and RD measurements. The PN:RD ratio of the warm preferring strains was less affected by temperature similarly as Q10 and Ea.
Permanent Link: http://hdl.handle.net/11104/0309425