Mechanism of photosynthetic response in Microcystis aeruginosa PCC7806 to low inorganic phosphorus

A niche model to predict Microcystis bloom decline in Chaohu Lake, China

“…According to RDA analysis, the Microcystis bloom decline was closely related to WT, DO, and TDP. This result was consistent with our previous fi ndings (Wang et al, 2010c), where low concentrations of inorganic phosphorus in the culture medium could signifi cantly limit the fl uidity of the thylakoid membrane, and fi nally result in a marked decrease in photosynthetic activity and primary productivity.…”

An integrated method for removal of harmful cyanobacterial blooms in eutrophic lakes

“…H 2 O 2 was added to these beakers at six concentrations: 0,10,30,60,90 and 120 mg/L, with triplicates of each concentration. Then the Microcystis were cultured under 400 mmol photons$s À1 m À2 of cold fluorescent light at 32 AE 2 C for 8 h. Maximum photochemical efficiency of PSII (F v /F m ) was measured by phyto-PAM (Walz, Effeltrich, Germany) (Wang et al, 2010b), and Chl-a concentration was measured via the optical density OD 680 (Bauer et al, 1990;Cai et al, 2009) whereas water turbidity was measured spectrophotometrically at OD 730 Yamamoto et al, 2009) (TU-1810, Beijing Purkinje General Instrument Co., Ltd). Absorption spectra of algae treated with 60 mg/L H 2 O 2 for 2 h were recorded by spectrophotometer (TU-1810, Beijing Purkinje General Instrument Co., Ltd) and were used to monitor whether damage of the phycobilisomes (PBS), known as lightharvesting pigment, occurred.…”

“…TN and TP were analyzed according to Wang et al (2010a). The determinations of Chla and F v /F m were based on the method of Wang et al (2010b).…”

Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China)

“…Moreover, M. wesenbergii is only found at water temperatures above 27°C (Otten and Paerl 2011). Most reports on dominance have focused either on the competition between Microcystis species and non-bloom-forming species, or differences between unicellular and colonial strains (Shen and Song 2007;Wang et al 2010;Shi et al 2011;Liu et al 2011a). Other studies have documented variation in the growth and microcystin production between toxic and nontoxic Microcystis strains (Vézie et al 2002;Kardinaal et al 2007;Davis et al 2009).…”