The effect of naphthalene-acetic acid on biomass productivity and chlorophyll content of green algae, coccolithophore, diatom, and cyanobacterium cultures

dc.contributor.author	Hunt, RW	en
dc.contributor.author	Chinnasamy, S	en
dc.contributor.author	Das, KC	en
dc.date.accessioned	2014-06-06T06:51:04Z
dc.date.available	2014-06-06T06:51:04Z
dc.date.issued	2011	en
dc.identifier.issn	02732289	en
dc.identifier.uri	http://dx.doi.org/10.1007/s12010-011-9217-z	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5298
dc.subject	Auxins	en
dc.subject	Bioenergy	en
dc.subject	Biofuels	en
dc.subject	Biomass	en
dc.subject	Biostimulants	en
dc.subject	Chlorella sorokiniana	en
dc.subject	Dunaliella bardawil	en
dc.subject	Haematococcus pluvialis	en
dc.subject	Microalgae	en
dc.subject	Naphthalene-acetic acid	en
dc.subject	Nostoc	en
dc.subject	Phaeodactylum tricornutum	en
dc.subject	Phytohormones	en
dc.subject	Plant growth regulators	en
dc.subject	Pleurochrysis carterae	en
dc.subject.other	Auxins	en
dc.subject.other	Bio-energy	en
dc.subject.other	Biostimulants	en
dc.subject.other	Chlorella sorokiniana	en
dc.subject.other	Dunaliella bardawil	en
dc.subject.other	Haematococcus pluvialis	en
dc.subject.other	Micro-algae	en
dc.subject.other	Naphthalene-acetic acid	en
dc.subject.other	Nostoc	en
dc.subject.other	Phaeodactylum tricornutum	en
dc.subject.other	Phytohormones	en
dc.subject.other	Plant growth regulators	en
dc.subject.other	Pleurochrysis carterae	en
dc.subject.other	Acetic acid	en
dc.subject.other	Algae	en
dc.subject.other	Biomass	en
dc.subject.other	Chlorophyll	en
dc.subject.other	Engineering research	en
dc.subject.other	Ethanol	en
dc.subject.other	Gallium alloys	en
dc.subject.other	Genetic engineering	en
dc.subject.other	Methanol	en
dc.subject.other	Microorganisms	en
dc.subject.other	Naphthalene	en
dc.subject.other	pH	en
dc.subject.other	Productivity	en
dc.subject.other	Ecology	en
dc.subject.other	acetic acid	en
dc.subject.other	alcohol	en
dc.subject.other	chlorophyll	en
dc.subject.other	methanol	en
dc.subject.other	naphthalene	en
dc.subject.other	article	en
dc.subject.other	bacterium culture	en
dc.subject.other	bioassay	en
dc.subject.other	biomass production	en
dc.subject.other	Chlorella sorokiniana	en
dc.subject.other	controlled study	en
dc.subject.other	cyanobacterium	en
dc.subject.other	diatom	en
dc.subject.other	green alga	en
dc.subject.other	Haptophyta	en
dc.subject.other	nonhuman	en
dc.subject.other	Nostoc	en
dc.subject.other	Scenedesmus	en
dc.subject.other	Acetic Acid	en
dc.subject.other	Biomass	en
dc.subject.other	Chlorella	en
dc.subject.other	Chlorophyll	en
dc.subject.other	Chlorophyta	en
dc.subject.other	Cyanobacteria	en
dc.subject.other	Diatoms	en
dc.subject.other	Ethanol	en
dc.subject.other	Haptophyta	en
dc.subject.other	Methanol	en
dc.subject.other	Naphthalenes	en
dc.subject.other	Scenedesmus	en
dc.subject.other	Solvents	en
dc.subject.other	algae	en
dc.subject.other	Bacillariophyta	en
dc.subject.other	Chlorella minutissima	en
dc.subject.other	Chlorella sorokiniana	en
dc.subject.other	Chlorophyta	en
dc.subject.other	Cyanobacteria	en
dc.subject.other	Dunaliella bardawil	en
dc.subject.other	Haematococcus pluvialis	en
dc.subject.other	Nostoc	en
dc.subject.other	Phaeodactylum tricornutum	en
dc.subject.other	Pleurochrysis carterae	en
dc.subject.other	Scenedesmus bijuga	en
dc.title	The effect of naphthalene-acetic acid on biomass productivity and chlorophyll content of green algae, coccolithophore, diatom, and cyanobacterium cultures	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s12010-011-9217-z	en
heal.publicationDate	2011	en
heal.abstract	The application of biochemical stimulants to enhance biomass and metabolite productivity is being investigated here and may be a simpler approach to achieve our goals of higher productivity and lower costs than methods such as genetic modification. The research builds on prior work of screening various biochemical stimulants representing different types of plant growth regulators with the green alga, Chlorella sorokiniana. Here, we report the impact on biomass and chlorophyll productivity by comparing the delivery method of a previously identified superior stimulant, the synthetic auxin naphthalene-acetic acid (NAA), solubilized in ethanol or methanol. Algae evaluated included the green alga, C. sorokiniana, as well as a mixed consortium that includes C. sorokiniana along with two other wild-isolated green algae, Scenedesmus bijuga and Chlorella minutissima. It was found that NAA dissolved in ethanol was more effective in enhancing biomass productivity of C. sorokiniana. However, no differences were observed with the mixed consortia. The most effective treatment from this step, EtOH 500ppm+NAA 5ppm, along with two other NAA concentrations (EtOH 500ppm+NAA 2.5ppm and EtOH 500ppm+NAA 10ppm), was then applied to six diverse species of microalgae to determine if the treatment dosage was effective for other freshwater and marine green algae, cyanobacteria, coccolithophore, and diatoms. It was found that three of the species bioassayed, Pleurochrysis carterae, C. sorokiniana, and Haematococcus pluvialis exhibited a substantial boost in biomass productivity over the 10-day growth period. The use of ethanol and NAA at a combined dosage of EtOH 500ppm+NAA 5ppm was found to generate the highest biomass productivity for each of the species that responded positively to the treatments. If scalable, NAA and ethanol may have the potential to lower production costs by increasing biomass yields for commercial microalgae cultivation. © Springer Science+Business Media, LLC 2011.	en
heal.journalName	Applied Biochemistry and Biotechnology	en
dc.identifier.issue	8	en
dc.identifier.volume	164	en
dc.identifier.doi	10.1007/s12010-011-9217-z	en
dc.identifier.spage	1350	en
dc.identifier.epage	1365	en