Samples of Cyanobacterium Calothrix sp. ISC 65 Collected from Oil Polluted Regions Respond to Combined Effects of Salinity, Extremely Low-Carbon Dioxide Concentration and Irradiance

Amirlatifi, H.S.; Shokravi, Shadman; Sateei, A; Golsefidi, Mazyar Ahmadi; Mahmoudjanlo, Mehrali

doi:10.1615/interjalgae.v20.i2.80

Cited by 4 publications

(1 citation statement)

References 45 publications

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“…UAB 206 that isolated from the Spanish paddy field (not published data). Valiente and Leganes ( 1990 ), Poza-Carrión et al ( 2001 ), Soltani et al ( 2006 ), Amirlatifi et al ( 2018 ), Abbasi et al ( 2019 ) and Shokravi and Bahavar ( 2021a ) have indicated that the optimum pH for growth, photosynthesis and nitrogen fixation of terrestrial cyanobacteria under combined environmental factors is about 8 or 9. The response of strain to pH 11 and 80 mM salinity may depend on the high genetic plasticity (Boussiba et al 2000 ) or and is an inherent characteristic (Tang and Vincent 1999 ) which resulted in without any requirement for an acclimation process (Vonshak and Torzillo 2007 ).…”

Section: Discussionmentioning

confidence: 99%

Acclimation response and ability of growth and photosynthesis of terrestrial cyanobacterium Cylindrospermum sp. strain FS 64 under combined environmental factors

Bahavar

Shokravi

2022

Arch Microbiol

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This investigation tested the hypothesis that the native cyanobacteria can acclimatize and grow under the combination of environmental factors and/or how does their process change with the age of culture? Here, we tried to combine multiple factors to simulated what happens in natural ecosystems. We analyzed the physiological response of terrestrial cyanobacterium, Cylindrospermum sp. FS 64 under combination effect of different salinity (17, 80, and 160 mM) and alkaline pHs (9 and 11) at extremely limited carbon dioxide concentration (no aeration) up to 96 h. Our evidence showed that growth, biomass, photosystem II, and phycobilisome activity significantly increased under 80 mM salinity and pH 11. In addition, this combined condition led to a significant increase in maximum light-saturated photosynthesis activity and photosynthetic efficiency. While phycobilisomes and photosystem activity decreased by increasing salinity (160 mM) which caused decreased growth rates after 96 h. The single-cell study (CLMS microscopy) which illustrated the physiological state of the individual and active-cell confirmed the efficiency and effectiveness of both photosystems and phycobilisome under the combined effect of 80 mM salinity and pH 11.

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