Habitat-specific differences in adaptation to light in freshwater diatoms

Abstract

The growth and physiological characteristics of eight strains of diatoms isolated from aquatic habitats with differing water column characteristics were studied under varying light intensities to compare adaptations to low and high light intensity. Diatoms isolated from different habitats were grouped into low light-adapted (LLA) and high lightadapted (HLA) diatoms based on their differences in growth and photoacclimation characteristics. LLA diatoms had higher growth rates and higher photosynthetic activity at relatively lower light intensities (2, 12.5, and 25 μmol photons m −2 s

Diversity in Xanthophyll Cycle Pigments Content and Related Nonphotochemical Quenching (NPQ) Among Microalgae: Implications for Growth Strategy and Ecology

“…, Shi et al. ) ecosystems, (iii) different habitats of the same ecosystem, that is, spring to summer shift from ice‐covered to ice‐free water column in polar systems (Petrou et al. ) or different sediment types in estuarine intertidal flats (Cartaxana et al.…”

A Novel and Convenient Method for Early Warning of Algal Cell Density by Chlorophyll Fluorescence Parameters and Its Application in a Highland Lake

“…Both abiotic environmental factors ( O’neil et al, 2012 ; Paerl and Paul, 2012 ; Winder and Sommer, 2012 ; Ruiz-de la Torre et al, 2013 ) and biotic factors ( Provasoli, 1958 ; González et al, 2000 ; Chattopadhayay et al, 2002 ) could affect the concentrations of Chl a and trigger cyanobacterial blooms. Unlike the effects of environmental factors on phytoplankton, the maximum quantum yield ( F v / F m ) indicates directly photosynthetic activity of phytoplankton ( Schreiber et al, 1995b ; Shi et al, 2016 ). F v / F m can drop significantly when algae in response to changing environmental conditions ( Shen and Song, 2007 ; Shi et al, 2016 ).…”

“…Unlike the effects of environmental factors on phytoplankton, the maximum quantum yield ( F v / F m ) indicates directly photosynthetic activity of phytoplankton ( Schreiber et al, 1995b ; Shi et al, 2016 ). F v / F m can drop significantly when algae in response to changing environmental conditions ( Shen and Song, 2007 ; Shi et al, 2016 ). Therefore, F v / F m can be considered as a sensitive indicator that can reflect algae viability assessment ( Genty et al, 1990 ; Oxborough and Baker, 1997 ; Boyd et al, 2000 ).…”

“…Similarly,Δ F / F m ′ reflects the actual physiological activity of PS II ( Genty et al, 1990 ). Previous studies have shown that both F v / F m and Δ F / F m ′ respond to changes of environmental factors such as nutrients and light intensity and are directly related to the growth of algae ( Boyd et al, 1999 ; Misra et al, 2012 ; Shi et al, 2016 ). Therefore, the use of these CFpars may be suitable candidates for simple predictions of algal blooms.…”

Diatoms’ Breakthroughs in Biotechnology: <i>Phaeodactylum tricornutum</i> as a Model for Producing High-Added Value Molecules

“…Many scientists have also approved that, they are photoautotrophic algae, so they carry out photosynthesis like green plants but with few differences such as in lipid metabolism. Thus, many studies focused on the response of diatoms to different light wavelengths, hence explaining the high adaptability of one specie to shallow water or deep oceans [9] [10] [11]. Thus, this process allows them to fix about 40% of atmospheric CO 2 within the oceans and produce more than 20% of the O 2 generated on earth [12] [13] [14].…”