Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 535474
Title The impact of day length on cell division and efficiency of light use in a starchless mutant of Tetradesmus obliquus
Author(s) León-Saiki, G.M.; Cabrero Martí, Tània; Veen, Douwe van der; Wijffels, René H.; Martens, Dirk E.
Source Algal Research 31 (2018). - ISSN 2211-9264 - p. 387 - 394.
Department(s) Food Process Engineering
Bioprocess Engineering
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Cell division - Day/night cycle - Diurnal biochemical changes - Microalgae - Photosynthetic efficiency - Scenedesmus obliquus
Abstract Large scale microalgal production will be primarily done under natural sunlight conditions, where microalgae will be exposed to diurnal cycles of light and dark (LD) and to differences in the length of both periods (photoperiod). Tetradesmus obliquus (formerly known as Scenedesmus obliquus), a strain with potential for biofuel production, and the starchless mutant slm1 were grown under 3 different LD periods: 16:8 h, 14:10 h and 12:12 h. Cell division started a fix number of hours after the light went on (sunrise), independently of the length of the photoperiod. For the wild-type, cell division started approximately 14 h after the beginning of the day and occurred mainly at night. For the starchless mutant slm1, timing of cell division was also independent of the photoperiod length (starting 10–12 h after sunrise). However, as opposed to the wild-type, cell division always started during the day. For both strains, growth rate increased with increased length of the light period. The slm1 mutant is capable of surviving long dark periods (up to 12 h) despite the lack of starch. In general, the slm1 mutant has a lower photosynthetic efficiency than the wild-type, with the 12:12 h LD resulting into even less efficiency than the other two LD cycles.
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