Carbon and nitrogen fixation by Anabaena fertilissima under elevated CO2 and temperature

dc.contributor.author	Chinnasamy, S	en
dc.contributor.author	Ramakrishnan, B	en
dc.contributor.author	Bhatnagar, A	en
dc.contributor.author	Goyal, SK	en
dc.contributor.author	Das, KC	en
dc.date.accessioned	2014-06-06T06:48:55Z
dc.date.available	2014-06-06T06:48:55Z
dc.date.issued	2009	en
dc.identifier.issn	02705060	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4335
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-72249098756&partnerID=40&md5=bb66f2e283332811315d81e17b0399ce	en
dc.subject.other	biomass	en
dc.subject.other	carbon cycle	en
dc.subject.other	carbon dioxide	en
dc.subject.other	cyanobacterium	en
dc.subject.other	enzyme activity	en
dc.subject.other	growth rate	en
dc.subject.other	high temperature	en
dc.subject.other	nitrogen fixation	en
dc.subject.other	pigment	en
dc.subject.other	scavenger	en
dc.subject.other	Anabaena	en
dc.title	Carbon and nitrogen fixation by Anabaena fertilissima under elevated CO2 and temperature	en
heal.type	journalArticle	en
heal.publicationDate	2009	en
heal.abstract	We studied the growth of Anabaena fertilissima under graded CO2 and temperature conditions to assess its suitability as a CO2 scavenger for carbon recycling. A. fertilissima reached maximum growth at 6% CO2, but growth declined above this CO2 level; yet, at no CO2 concentration growth was less than that at ambient CO 2. High temperature (>30°C) reduced growth of the cyanobacterium, but presence of elevated (6%) CO2 lessened the intensity of that reduced growth. High temperature also reduced biomass, pigments, total protein, and nitrogen fixation, but elevated CO2 significantly moderated this negative effect. Elevated CO2 reduced 14CO2 uptake by 50% at 300C and >44% at higher temperatures compared to uptake at ambient CO2 at 300C Similarly, carbonic anhydrase activity also showed inhibition at high CO2.	en
heal.journalName	Journal of Freshwater Ecology	en
dc.identifier.issue	4	en
dc.identifier.volume	24	en
dc.identifier.spage	587	en
dc.identifier.epage	596	en