Algicidal microorganisms and secreted algicides: New tools to induce microalgal cell disruption

Demuez, Marie; González‐Fernández, Cristina; Ballesteros, Mercedes

doi:10.1016/j.biotechadv.2015.08.003

Cited by 116 publications

(53 citation statements)

References 118 publications

(194 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, these nine strains produce C6–C14 HSL, with their physiological behavior being controlled by HSL molecules (Xu et al ., 2012). Furthermore, the inducer role of QS was also pointed out for bacteria producing and secreting algicide molecules (Demuez et al ., 2015). Recently, data mining of the genome of a Rhodobacteraceae strain isolated from the microalga Prorocentrum donghaiense also provided hint of QS-regulated algicidal activity in bactera (Zheng et al ., 2015).…”

Section: Antagonistic Interactionsmentioning

confidence: 98%

Quorum Sensing Is a Language of Chemical Signals and Plays an Ecological Role in Algal-Bacterial Interactions

Zhou

Lyu

Richlen

et al. 2016

Critical Reviews in Plant Sciences

144

View full text Add to dashboard Cite

Algae are ubiquitous in the marine environment, and the ways in which they interact with bacteria are of particular interest in marine ecology field. The interactions between primary producers and bacteria impact the physiology of both partners, alter the chemistry of their environment, and shape microbial diversity. Although algal-bacterial interactions are well known and studied, information regarding the chemical-ecological role of this relationship remains limited, particularly with respect to quorum sensing (QS), which is a system of stimuli and response correlated to population density. In the microbial biosphere, QS is pivotal in driving community structure and regulating behavioral ecology, including biofilm formation, virulence, antibiotic resistance, swarming motility, and secondary metabolite production. Many marine habitats, such as the phycosphere, harbour diverse populations of microorganisms and various signal languages (such as QS-based autoinducers). QS-mediated interactions widely influence algal-bacterial symbiotic relationships, which in turn determine community organization, population structure, and ecosystem functioning. Understanding infochemicals-mediated ecological processes may shed light on the symbiotic interactions between algae host and associated microbes. In this review, we summarize current achievements about how QS modulates microbial behavior, affects symbiotic relationships, and regulates phytoplankton chemical ecological processes. Additionally, we present an overview of QS-modulated co-evolutionary relationships between algae and bacterioplankton, and consider the potential applications and future perspectives of QS.

show abstract

Section: Antagonistic Interactionsmentioning

confidence: 98%

Quorum Sensing Is a Language of Chemical Signals and Plays an Ecological Role in Algal-Bacterial Interactions

Zhou

Lyu

Richlen

et al. 2016

Critical Reviews in Plant Sciences

144

View full text Add to dashboard Cite

show abstract

“…Advantages of algicidal lysis include cost, elimination of need for external enzyme application during downstream processing, high selectivity, and mild extraction conditions (pH, temperature, etc.) (Demuez et al 2015). Disadvantages include the need for careful selection of microorganisms, difficulties in establishing optimized co-culturing techniques, and controlling the degree of disruption.…”

Section: Non-mechanical Methodsmentioning

confidence: 99%

Green microalgae biomolecule separations and recovery

Dixon

Wilken

2018

Bioresour. Bioprocess.

105

View full text Add to dashboard Cite

Microalgae biomass has garnered significant attention as a renewable energy feedstock and alternative to petroleumbased fuels. The diverse metabolism of green microalgae species additionally provides opportunities for recovery of products for feed, food, nutraceutical, cosmetic, and biopharmaceutical industries. Recently, the concept of using microalgae as part of a biorefinery model has been adopted in place of refinery methods focused on recovering one target product. This has led to producers exploring co-production of high value and high volume products in an effort to improve process economics. With numerous potential products and applications, the biomass source or specific strain must be carefully selected to accumulate extractable levels of the target molecule(s). It is additionally imperative to understand the morphology and metabolism of the selected strain to cost-effectively manage all stages of commercial production. This review will focus specifically on microalgae in the division of Chlorophyta, or green algae and their extracellular matrices (ECM), potential for commercial products, and finally describe a holistic approach for biomolecule extraction and recovery. Additionally, cell disruption and fractionation methods for recovery of biomolecules for commercial products are highlighted along with an alternative method, aqueous enzymatic processing for multiple biomolecule extraction and recovery from green microalgae. An emphasis is placed on connecting the morphological characteristics of microalgae ECM or organelle membranes to implications on separation and purification technologies.

show abstract

“…α‐Amylase, amylo‐glucosidase, cellulose, neutrase, pectinase, glycosidases, glucanases, peptidases, lipases, proteases, esterases, Β‐glucanase, and xylanase are some of the specific enzymes used for microalgalcell wall disruption . Use of enzymes for pretreatment (enzymatic pretreatment) has several advantages such as low energy input, low cost, high selectivity of enzymatic reactions, no inhibitory end products, and mild operational conditions such pH and temperature . Pretreatment with enzymes can be applied individually or in combination with other enzymes.…”

Section: Pretreatment Methods Applied To Microalgal Biomassmentioning

confidence: 99%

A comprehensive review on pretreatment of microalgae for biogas production

Çakmak

Uğurlu

2018

Int J Energy Res

View full text Add to dashboard Cite

Summary Use of microalgal biomass for renewable energy production has gained considerable attention in the world due to increasing global energy demand and negative environmental impacts of nonrenewable fossil fuels. Anaerobic digestion is one of the renewable technologies that microalgal biomass is converted into biogas by anaerobic archea. One of the main drawbacks of using microalgal biomass for biogas production is that certain types of microalgae has rigid cell wall characteristics, which limits accessibility of anaerobic archea to microalgal intracellular organic matter during hydrolysis phase. This limitation lowers efficiency of biogas production from microalgal biomass. However, introducing pretreatment methods prior to anaerobic digestion provides disruption of rigid microalgal cell wall and improve biogas yields from microalgal biomass. The objective of this paper was to review current knowledge related to pretreatment methods applied prior to anaerobic digestion of microalgal biomass. Efficiency and applicability of pretreatment methods mainly depend on type of microalgae, cell wall characteristics, and cost and energy requirements during pretreatment process. In this review, various type of pretreatment methods applied to microalgal biomass was discussed in detail with background knowledge and literature studies in their potential on maximization of biogas yields and their cost effectiveness, which is important for large‐scale applications. In the view of current knowledge, it was concluded that each pretreatment method has a relative contribution to improvement in biogas production depending on the type of microalgae. However, energy and cost requirements are the main limitations for pretreatment. So, further studies should focus on reduction of cost and energy demand by introducing combined methods, novel chemicals, and on‐site or immobilized enzymes in pretreatment to increase feasibility of pretreatment prior to anaerobic digestion in industrial scale.

show abstract

Algicidal microorganisms and secreted algicides: New tools to induce microalgal cell disruption

Cited by 116 publications

References 118 publications

Quorum Sensing Is a Language of Chemical Signals and Plays an Ecological Role in Algal-Bacterial Interactions

Quorum Sensing Is a Language of Chemical Signals and Plays an Ecological Role in Algal-Bacterial Interactions

Green microalgae biomolecule separations and recovery

A comprehensive review on pretreatment of microalgae for biogas production

Contact Info

Product

Resources

About