Growth, biostimulant and biopesticide activity of the MACC-1 Chlorella strain cultivated outdoors in inorganic medium and wastewater

0541496 - MBÚ 2022 RIV NL eng J - Journal Article
Ranglová, Karolína - Lakatos, Gergely Erno - Manoel, Joao Camara - Grivalský, Tomáš - Suarez Estrella, F. - Acien Fernandez, F. G. - Molnar, Z. - Ördög, V. - Masojídek, Jiří
Growth, biostimulant and biopesticide activity of the MACC-1 Chlorella strain cultivated outdoors in inorganic medium and wastewater.
Algal Research-Biomass Biofuels and Bioproducts. Roč. 53, MAR (2021), č. článku 102136. ISSN 2211-9264. E-ISSN 2211-9264
EU Projects: European Commission(XE) 727874 - SABANA
Institutional support: RVO:61388971
Keywords : Bioactivity * Chlorella * Chlorophyll fluorescence * Outdoor cultivation * Pathogens * Wastewater
OECD category: Microbiology
Impact factor: 5.276, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S2211926420310043?via%3Dihub

The use of wastewater (WW) for cultivation contributes to the sustainability of microalgae production due to the reduced costs of cultivation. The main objective of this work was to study growth, physiological performance and bioactivity of the microalgae strain Chlorella vulgaris MACC-1 grown in two nutrient sources inorganic BG-11 medium and centrate from municipal WW. For the comparison, two thin-layer cultivation units thin-layer cascade and a novel, thin-layer raceway pond were used. The cultures grew well in both units showing good photosynthetic activity. The germination index of watercress seeds, as well as the auxin-like activity in mung bean and cytokinin-like activity in wheat growth tests were used to evaluate the biostimulant potential. The slight increase on the germination index was determined in C. vulgaris cultures grown in BG-11, but the biomass revealed no biostimulant activity when cultivated in WW. On the other hand, the antibacterial and antifungal activities determined by antagonism bioassay using dual cultures were significantly higher when grown in WW. We expect that the antimicrobial activities may be induced by WW-microbes and the biostimulating effect could probably be suppressed by the presence of some inhibiting substances. The results revealed a clear interplay among ambient irradiance intensity, growth rate, maximum quantum yield of PSII, F-v/ F-m and oxygen production/respiration.
Permanent Link: http://hdl.handle.net/11104/0319080