The characteristics and algicidal mechanisms of cyanobactericidal bacteria, a review
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(2020) 36:188
REVIEW
The characteristics and algicidal mechanisms of cyanobactericidal bacteria, a review Caiyun Yang1 · Xiping Hou1 · Donghao Wu1 · Wenying Chang1 · Xian Zhang1 · Xianzhu Dai1 · Hongxia Du1 · Xiaohui Zhang1 · Yasuo Igarashi1 · Feng Luo1 Received: 7 July 2020 / Accepted: 16 November 2020 © Springer Nature B.V. 2020
Abstract Cyanobacterial blooms are a worldwide problem, especially in freshwaters. As one of the most abundant co-existing organisms of algae, bacteria play critical roles in cyanobacteria growth, particularly the cyanobactericidal bacteria which can efficiently kill cyanobacteria. Recent years, cyanobactericidal bacteria are highly recognized as a method that could potentially block cyanobacterial blooms. Many studies have been conducted to assess their effects on the termination of cyanobacteria blooms and explore their cyanobactericidal mechanisms, e.g., attacking by cell to cell or releasing specific compounds, the physiological, metabolic, and transcriptional disturbance on cyanobacteria. In this review, the present state of research on cyanobactericidal bacteria for the bloom-causing cyanobacteria species is summarized. The challenges in applying cyanobactericidal bacteria in the control of natural cyanobacterial blooms are discussed. Keywords Cyanobactericidal bacteria · Cyanobactericidal compounds · Cyanobactericidal mechanism · Cyanobacterial bloom · Ecological relationship
Introduction Cyanobacteria are common algae in freshwater, and their rapid growth can easily lead to bloom outbreak when nutrients (e.g., the concentration of nitrogen, phosphorus, and iron) (Huisman et al. 2018), temperature and hydrologic conditions (e.g., low velocity, long hydrolytic retention time) (Fu et al. 2015) are suitable. In warm seasons (e.g., summer), most inland waters around human habitations can provide these conditions. Thus the cyanobacterial blooms occur worldwide and have become an environmental problem. Due to the nutrient inputs (e.g., sewage discharge and Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11274-020-02965-5) contains supplementary material, which is available to authorized users. * Caiyun Yang [email protected] * Feng Luo [email protected] 1
Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment, Southwest University, Chongqing 400715, People’s Republic of China
usage of nitrogen and phosphorus fertilizer), the elevation of temperature and pCO2 under the global warming, and intensification of water stratification resulting from climate changes, the frequency, duration, and scale of phytoplankton blooms tend to be accelerated (Havens and Paerl 2015; Huisman et al. 2018; Ji et al. 2020; Paerl et al. 2018) and cyanobacterial blooms are the most competitive one (Gobler 2020; Paerl et al. 2018). Dense cyanobacterial blooms can release the odor compounds and cyanotoxins, increase turbidity, produce mucilaginous materials, and cause oxygen depletion during microbi
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