Investigating the impact of light quality on macromolecular of Chaetoceros muelleri.

Iwasaki, K; Szabó, M; Tamburic, B; Evenhuis, C; Zavafer, A; Kuzhiumparambil, U; Ralph, P

Investigating the impact of light quality on macromolecular of Chaetoceros muelleri.

Iwasaki, K Szabó, M Tamburic, B

Evenhuis, C

Zavafer, A Kuzhiumparambil, U

Ralph, P

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Publisher:: CSIRO Publishing
Publication Type:: Journal Article
Citation:: Functional Plant Biology: an international journal of plant function, 2022, 49, (5-6), pp. 554-564
Issue Date:: 2022-10-12

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Field	Value	Language
dc.contributor.author	Iwasaki, K
dc.contributor.author	Szabó, M
dc.contributor.author	Tamburic, B https://orcid.org/0000-0001-5720-9380
dc.contributor.author	Evenhuis, C https://orcid.org/0000-0001-9903-7716
dc.contributor.author	Zavafer, A
dc.contributor.author	Kuzhiumparambil, U https://orcid.org/0000-0003-0582-6779
dc.contributor.author	Ralph, P https://orcid.org/0000-0002-3103-7346
dc.date.accessioned	2022-12-02T00:20:46Z
dc.date.available	2021-09-02
dc.date.available	2022-12-02T00:20:46Z
dc.date.issued	2022-10-12
dc.identifier.citation	Functional Plant Biology: an international journal of plant function, 2022, 49, (5-6), pp. 554-564
dc.identifier.issn	1445-4408
dc.identifier.issn	1445-4416
dc.identifier.uri	http://hdl.handle.net/10453/164027
dc.description.abstract	Diatoms (Bacillariophyceae) are important to primary productivity of aquatic ecosystems. This algal group is also a valuable source of high value compounds that are utilised as aquaculture feed. The productivity of diatoms is strongly driven by light and CO2 availability, and macro- and micronutrient concentrations. The light dependency of biomass productivity and metabolite composition is well researched in diatoms, but information on the impact of light quality, particularly the productivity return on energy invested when using different monochromatic light sources, remains scarce. In this work, the productivity return on energy invested of improving growth rate, photosynthetic activity, and metabolite productivity of the diatom Chaetoceros muelleri under defined wavelengths (blue, red, and green) as well as while light is analysed. By adjusting the different light qualities to equal photosynthetically utilisable radiation, it was found that the growth rate and photosynthetic oxygen evolution was unchanged under white, blue, and green light, but it was lower under red light. Blue light improved the productivity return on energy invested for biomass, total protein, total lipid, total carbohydrate, and in fatty acids production, which would suggest that blue light should be used for aquaculture feed production.
dc.format	Print
dc.language	eng
dc.publisher	CSIRO Publishing
dc.relation.ispartof	Functional Plant Biology: an international journal of plant function
dc.relation.isbasedon	10.1071/FP21131
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0601 Biochemistry and Cell Biology, 0602 Ecology, 0607 Plant Biology
dc.subject.classification	Plant Biology & Botany
dc.subject.mesh	Biomass
dc.subject.mesh	Diatoms
dc.subject.mesh	Ecosystem
dc.subject.mesh	Fatty Acids
dc.subject.mesh	Photosynthesis
dc.subject.mesh	Diatoms
dc.subject.mesh	Fatty Acids
dc.subject.mesh	Ecosystem
dc.subject.mesh	Biomass
dc.subject.mesh	Photosynthesis
dc.title	Investigating the impact of light quality on macromolecular of Chaetoceros muelleri.
dc.type	Journal Article
utslib.citation.volume	49
utslib.location.activity	Australia
utslib.for	0601 Biochemistry and Cell Biology
utslib.for	0602 Ecology
utslib.for	0607 Plant Biology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/DVC (Innovation & Enterprise)
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-12-02T00:20:45Z
pubs.issue	5-6
pubs.publication-status	Published
pubs.volume	49
utslib.citation.issue	5-6

Abstract:

Diatoms (Bacillariophyceae) are important to primary productivity of aquatic ecosystems. This algal group is also a valuable source of high value compounds that are utilised as aquaculture feed. The productivity of diatoms is strongly driven by light and CO2 availability, and macro- and micronutrient concentrations. The light dependency of biomass productivity and metabolite composition is well researched in diatoms, but information on the impact of light quality, particularly the productivity return on energy invested when using different monochromatic light sources, remains scarce. In this work, the productivity return on energy invested of improving growth rate, photosynthetic activity, and metabolite productivity of the diatom Chaetoceros muelleri under defined wavelengths (blue, red, and green) as well as while light is analysed. By adjusting the different light qualities to equal photosynthetically utilisable radiation, it was found that the growth rate and photosynthetic oxygen evolution was unchanged under white, blue, and green light, but it was lower under red light. Blue light improved the productivity return on energy invested for biomass, total protein, total lipid, total carbohydrate, and in fatty acids production, which would suggest that blue light should be used for aquaculture feed production.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/164027