Publications

Increased biomass productivity in green algae by tuning non-photochemical quenching  (2016)

Authors:
Berteotti, Silvia; Ballottari, Matteo; Bassi, Roberto
Title:
Increased biomass productivity in green algae by tuning non-photochemical quenching
Year:
2016
Type of item:
Articolo in Rivista
Tipologia ANVUR:
Articolo su rivista
Language:
Inglese
Format:
Elettronico
Referee:
Name of journal:
SCIENTIFIC REPORTS
ISSN of journal:
2045-2322
N° Volume:
6
Page numbers:
1-11
Keyword:
CHLAMYDOMONAS-REINHARDTII; HIGH-LIGHT; MICROALGAE; ACCLIMATION; COMPLEX; STRESS; PHOTOSYNTHESIS; ENERGY; PHOTOBIOREACTOR; PHOTOPROTECTION
Short description of contents:
Photosynthetic microalgae have a high potential for the production of biofuels and highly valued metabolites. However, their current industrial exploitation is limited by a productivity in photobioreactors that is low compared to potential productivity. The high cell density and pigment content of the surface layers of photosynthetic microalgae result in absorption of excess photons and energy dissipation through non-photochemical quenching (NPQ). NPQ prevents photoinhibition, but its activation reduces the efficiency of photosynthetic energy conversion. In Chlamydomonas reinhardtii, NPQ is catalyzed by protein subunits encoded by three lhcsr (light harvesting complex stress related) genes. Here, we show that heat dissipation and biomass productivity depends on LHCSR protein accumulation. Indeed, algal strains lacking two lhcsr genes can grow in a wide range of light growth conditions without suffering from photoinhibition and are more productive than wild-type. Thus, the down-regulation of NPQ appears to be a suitable strategy for improving light use efficiency for biomass and biofuel production in microalgae.
Product ID:
94853
Handle IRIS:
11562/954289
Last Modified:
December 11, 2019
Attachments:
1
Bibliographic citation:
Berteotti, Silvia; Ballottari, Matteo; Bassi, Roberto, Increased biomass productivity in green algae by tuning non-photochemical quenching «SCIENTIFIC REPORTS» , vol. 62016pp. 1-11

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