A Streptomyces globisporus strain kills Microcystis aeruginosa via cell-to-cell contact

Zeng, Yudie; Wang, Jiayu; Yang, Chunyan; Ding, Mengyue; Hamilton, Paul B.; Zhang, Xiaohui; Yang, Caiyun; Zhnag, Lei; Dai, Xianzhu

doi:10.1016/j.scitotenv.2020.144489

Cited by 46 publications

(20 citation statements)

References 70 publications

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“…The direct mode requires live bacteria cells to effectively antagonize the alga through direct contact ( Zhang et al, 2019 ; Xue et al, 2021 ). For instance, Zeng et al (2021) characterized interactions between algicidal bacterium Streptomyces globisporus and its target, HAB cyanobacteria Microcystic aeruginosa , as a direct attack, in which bacterial hyphae twined around the cyanobacteria cells. A direct contact mode may also result from the involvement of a compound that reaches effective concentrations only in the phycosphere ( Wang and Seyedsayamdost, 2017 ).…”

Section: Algicidal Interactionsmentioning

confidence: 99%

Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

2022

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Interactions between bacteria and phytoplankton in aqueous ecosystems are both complex and dynamic, with associations that range from mutualism to parasitism. This review focuses on algicidal interactions, in which bacteria are capable of controlling algal growth through physical association or the production of algicidal compounds. While there is some evidence for bacterial control of algal growth in the field, our understanding of these interactions is largely based on laboratory culture experiments. Here, the range of these algicidal interactions is discussed, including specificity of bacterial control, mechanisms for activity, and insights into the chemical and biochemical analysis of these interactions. The development of algicidal bacteria or compounds derived from bacteria for control of harmful algal blooms is reviewed with a focus on environmentally friendly or sustainable methods of application. Potential avenues for future research and further development and application of bacterial algicides for the control of algal blooms are presented.

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Section: Algicidal Interactionsmentioning

confidence: 99%

Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

2022

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“…For example, the anticyanobacterial modes of Aeromonas bestiarum HYD0802-MK36 [20], Chryseobacterium sp. [40], Streptomyces globisporus G9 [83], Alcaligenes denitrificans [59], and Shigella sp. H3 [60] on M. aeruginosa are regarded as direct attack, and a number of cyst-like cells are formed in cyanobacteria during the direct attack [10].…”

Section: Anticyanobacterial Modesmentioning

confidence: 99%

“…The relative transcriptional level of some critical genes in cyanobacteria can be dramatically changed by anticyanobacterial microorganisms and substances, including genes related to the synthesis of photosystem reaction center proteins (PsaA, psaB, psbA1 and psbD1) [47,57], peptidoglycan synthesis (glmS), membrane proteins (ftsH), antioxidase (prx) [100], heat-shock proteins (grpE) [100], fatty acids (fabZ) [100], cyanotoxin microcystins (mcyA, mcyB, mcyC and mcyD) [83,97], the functions of cell division (ftsZ) [93], CO 2 fixation (rbcL) [61], and DNA repair (ftsH and recA) [2,5]. Researchers have reported that the tran-scription expressions of genes ftsZ, psbA1, and glmS are decreased by DBL that is isolated from P. noxius HN-1 [104] and bacilysin that secreted from B. amyloliquefaciens FZB42 [91].…”

Section: Effects Of Anticyanobacterial Microorganisms On Gene Expressionmentioning

confidence: 99%

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

et al. 2022

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Harmful algal blooms (HABs) have attracted great attention around the world due to the numerous negative effects such as algal organic matters and cyanobacterial toxins in drinking water treatments. As an economic and environmentally friendly technology, microorganisms have been widely used for pollution control and remediation, especially in the inhibition/biodegradation of the toxic cyanobacterium Microcystis aeruginosa in eutrophic water; moreover, some certain anticyanobacterial microorganisms can degrade microcystins at the same time. Therefore, this review aims to provide information regarding the current status of M. aeruginosa inhibition/biodegradation microorganisms and the acute toxicities of anticyanobacterial substances secreted by microorganisms. Based on the available literature, the anticyanobacterial modes and mechanisms, as well as the in situ application of anticyanobacterial microorganisms are elucidated in this review. This review aims to enhance understanding the anticyanobacterial microorganisms and provides a rational approach towards the future applications.

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“…Biological control measures, such as plant-derived allelochemicals [ 10 ] or other biologically derived molecules [ 11 ], have been tested. Algal predation by bacteria [ 12 ] and algicidal bacteria [ 13 ] have also been evaluated. Even algicidal and toxin-degrading fungi have been tested [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water

Vesper

Sienkiewicz

Struewing

et al. 2022

Life

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To mitigate harmful cyanobacterial blooms (HCBs), toxic algicides have been used, but alternative methods of HCB prevention are needed. Our goal was to test the prophylactic addition of glucose to inhibit HCB development, using Microcystis and the toxin microcystin as the HCB model. Water samples were collected weekly, from 4 June to 2 July, from Harsha Lake in southwestern Ohio during the 2021 algal bloom season. From each weekly sample, a 25 mL aliquot was frozen for a 16S rRNA gene sequencing analysis. Then, 200 mL of Harsha Lake water was added to each of the three culture flasks, and glucose was added to create concentrations of 0 mM (control), 1.39 mM, or 13.9 mM glucose, respectively. The microcystin concentration in each flask was measured after 1 and 2 weeks of incubation. The results showed an 80 to 90% reduction in microcystin concentrations in glucose-treated water compared to the control. At the end of the second week of incubation, a 25 mL sample was also obtained from each of the culture flasks for molecular analysis, including a 16S rRNA gene sequencing and qPCR-based quantification of Microcystis target genes. Based on these analyses, the glucose-treated water contained significantly lower Microcystis and microcystin producing gene (mcy) copy numbers than the control. The 16S rRNA sequencing analysis also revealed that Cyanobacteria and Proteobacteria were initially the most abundant bacterial phyla in the Harsha Lake water, but as the summer progressed, Cyanobacteria became the dominant phyla. However, in the glucose-treated water, the Cyanobacteria decreased and the Proteobacteria increased in weekly abundance compared to the control. This glucose-induced proteobacterial increase in abundance was driven primarily by increases in two distinct families of Proteobacteria: Devosiaceae and Rhizobiaceae. In conclusion, the prophylactic addition of glucose to Harsha Lake water samples reduced Cyanobacteria’s relative abundance, Microcystis numbers and microcystin concentrations and increased the relative abundance of Proteobacteria compared to the control.

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A Streptomyces globisporus strain kills Microcystis aeruginosa via cell-to-cell contact

Cited by 46 publications

References 70 publications

Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water

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