Differences in adaptation to light and temperature extremes of Chlorella sorokiniana strains isolated from a wastewater lagoon
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Differences in adaptation to light and temperature extremes of Chlorella sorokiniana strains isolated from a wastewater lagoon. / Krimech, Aafaf; Helamieh, Mark; Wulf, Melina et al.
In: Bioresource Technology, Vol. 350, 126931, 01.04.2022.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Differences in adaptation to light and temperature extremes of Chlorella sorokiniana strains isolated from a wastewater lagoon
AU - Krimech, Aafaf
AU - Helamieh, Mark
AU - Wulf, Melina
AU - Krohn, Ines
AU - Riebesell, Ulf
AU - Cherifi, Ouafa
AU - Mandi, Laila
AU - Kerner, Martin
N1 - Copyright © 2022. Published by Elsevier Ltd.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - 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.
AB - 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.
KW - Isolation by dominance
KW - Microalgae
KW - Outdoor mass cultivation
KW - Pigment and fatty acid composition
KW - Reuse of treated wastewater, adaptation to extreme conditions
KW - Chemistry
UR - http://www.scopus.com/inward/record.url?scp=85125568113&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/f8fc0876-4258-36ec-990c-2d69f7cee0c0/
U2 - 10.1016/j.biortech.2022.126931
DO - 10.1016/j.biortech.2022.126931
M3 - Journal articles
C2 - 35247554
AN - SCOPUS:85125568113
VL - 350
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
M1 - 126931
ER -