Differences in adaptation to light and temperature extremes of Chlorella sorokiniana strains isolated from a wastewater lagoon

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Aafaf Krimech
  • Mark Helamieh
  • Melina Wulf
  • Ines Krohn
  • Ulf Riebesell
  • Ouafa Cherifi
  • Laila Mandi
  • Martin Kerner

Presently, two Chlorella sorokiniana strains sampled during summer (CS-S) and winter (CS-W) from a maturation pond and isolated by dominance were studied on their behavior on temperature and light extremes in batch experiments. Although both strains showed no differences in their tolerance of temperatures up to 45 °C, the growth rates, pigment contents and fatty acid compositions in response to PAR at 700 and 1,500 µmol m−2 sec-1 differed. CS-W was less affected by photoinhibition and maintained constantly high growth rates. High radiation resulted in both strains in an equivalent decrease of chlorophyll a and accessory pigments indicating that the latter did not function as a light filter. PUFAS (18:3 and 16:3) increased in CS-W at high radiation by > 60% and decreased in CS-S by 8 %. Results indicate that CS-W is highly favorable for mass cultivation particularly in outdoors, in which diurnal variations of solar radiation occur.

OriginalspracheEnglisch
Aufsatznummer126931
ZeitschriftBioresource Technology
Jahrgang350
ISSN0960-8524
DOIs
PublikationsstatusErschienen - 01.04.2022
Extern publiziertJa

DOI

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