BIOSURFACTANTS: Their Identity and Potential Efficacy in the Biological Control of Zoosporic Plant Pathogens

Stanghellini, M. E.; Miller, Raina M.

doi:10.1094/pdis.1997.81.1.4

Cited by 274 publications

(221 citation statements)

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“…In the FTIR spectrum, we could observe only a minor shoulder; this might be because of the di-rhamnolipid-rich biosurfactant produced by P. aeruginosa TMN (Rahman et al, 2002b). The results obtained are consistent with the structure reported by Stanghellini and Miller (1997) consisting of aliphatic acid and the glycolipid moiety.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)supporting

confidence: 88%

Production and characterization of di-rhamnolipid produced by Pseudomonas aeruginosa TMN

Moussa

Mohamed

Samak

2014

Braz. J. Chem. Eng.

106

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-Pseudomonas aeruginosa TMN was used to produce rhamnolipid (RL) from a variety of carbon and nitrogen substrates. The most favorable carbon sources for RL production were glucose and glycerol (both at 40 g/L), giving a RL yield of 0.3 and 0.25 g/L, respectively. Meanwhile, sodium nitrate appeared to be the preferable nitrogen source, resulting in a RL production of 0.34g/L. Rhamnolipid production from P. aeruginosa TMN was affected by temperature, pH and agitation rate, with 37 °C, pH 7 and 200 rpm agitation favorable for rhamnolipid production. Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and electro spray ionization-mass spectrometry (ESI-MS) analyses indicated that the purified product contained one type of commonly found rhamnolipid, which is L-rhamnosyl-L-rhamnosyl-β-hydroxydecanoyl-β-hydroxydecanoate. The rhamnolipid product can reduce the surface tension of water to 34 mN/m with a critical micelle concentration of nearly 18.75 mg/L and emulsified kerosene by 46%. P. aeruginosa TMN strain is a potential source of rhamnolipid biosurfactant, which could be used for the development of bioremediation processes in the marine environment.

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Section: Fourier Transform Infrared Spectroscopy (Ftir)supporting

confidence: 88%

Production and characterization of di-rhamnolipid produced by Pseudomonas aeruginosa TMN

Moussa

Mohamed

Samak

2014

Braz. J. Chem. Eng.

106

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“…Rhamnolipids are glycolipids biosurfactants produced by Pseudomonas aeruginosa, which emulsify oil and reduce the surface tension of water from 72 mN m −1 to around 25-30 mN m −1 (Itoh et al, 1971;Parra et al, 1989). They find applications in tertiary petroleum recovery , decontamination of marine oil pollution, soil remediation (Banat, 1995;Lotfabad et al, 2009) and crop protection (Stanghellini and Miller, 1997). They also show antimicrobial activity against Gram-positive and Gram-negative bacteria probably by interaction with the phosphatidylethanolamine moiety of biological membrane systems (Sanchez et al, 2006;Stipcevic et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Microbiotechnology Based Surfactants and Their Applications

Rahman¹

2016

Frontiers Research Topics

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PublisherFrontiers in Microbiology About FrontiersFrontiers is more than just an open-access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers Journal SeriesThe Frontiers Journal Series is a multi-tier and interdisciplinary set of open-access, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers Journal Series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to QualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: researchtopics@frontiersin.org 2 February 2016 | Microbiotechnology Based Surfactants and Their Applications Frontiers in MicrobiologyBiosurfactants are structurally diverse group of bioactive molecules produced by a variety of microorganisms. They are secondary metabolites that accumulate at interfaces, reduce surface tension and form micellar aggregates. This research topic describes few novel microbial strains with a focus on increasing our understanding of genetics, physiology, regulation of biosurfactant production and their commercial potentials. A major stumbling block in the commercialization of b...

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“…Several research groups have shown that non-ionic surfactants can exhibit a lytic activity against zoospores Faithfull, 1979, 1980;Stanghellini and Tomlinson, 1987;Stanghellini and Miller, 1997;Demeulenaere and Ho¨fte, 2000). Stanghellini and Rasmussen (1994), and Stanghellini et al (1996aStanghellini et al ( , b, 2000 also proved that non-ionic surfactants can be used to control rootinfecting zoosporic plant pathogens in hydroponic systems.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of alcohol alkoxylate surfactants differing in the molecular structure of the hydrophilic portion to control Phytophthora nicotianae in tomato substrate culture

2007

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Phytophthora nicotianae is a common and destructive pathogen of numerous ornamental, agronomic and horticultural crops such as tomato, tobacco and citrus. Three monobranched C 13 alcohol alkoxylate non-ionic surfactants were evaluated for in vitro inhibitory activity against the different asexual structures of P. nicotianae. The same surfactants, labelled MBA1301, MBA1303 and MBA1306, were tested for their in vivo control capacity against P. nicotianae root rot of tomato (Lycopersicon esculentum) under glasshouse conditions. MBA1301, MBA1303 and MBA1306 differ in the molecular structure of the hydrophilic portion. The molecular weight of MBA1301 is comparable to that of MBA1303 and is eight times lower than that of MBA1306. The main in vitro activity for MBA1301 and MBA1303 was a direct lytic effect on the zoospores. Zoospore lysis was already observed in the presence of 1 mg ml À1 of these two surfactants and almost no zoospores survived an addition of 5 mg ml À1 surfactant. In addition, MBA1301 and MBA1303 reduced sporangia formation at a concentration of 5 mg ml À1 . Both surfactants only affect mycelium growth at concentrations as high as 100 mg ml À1 . MBA1306 did not show any effect on sporangia formation, zoospore release and mycelium growth of P. nicotianae at a concentration 10 times that of the other two surfactants. A good in vivo control of P. nicotianae on tomato in substrate culture was obtained for MBA1301 and MBA1303 whereas the control capacity of MBA1306 was significantly lower. The results of this research indicate that non-ionic alcohol alkoxylate surfactants can be used to control tomato root rot caused by P. nicotianae in substrate culture. In addition, the size rather than the arrangement of the polymers in the hydrophilic portion of the surfactant molecule determines the efficacy to control tomato root rot caused by P. nicotianae in substrate culture. r

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BIOSURFACTANTS: Their Identity and Potential Efficacy in the Biological Control of Zoosporic Plant Pathogens

Cited by 274 publications

References 2 publications

Production and characterization of di-rhamnolipid produced by Pseudomonas aeruginosa TMN

Production and characterization of di-rhamnolipid produced by Pseudomonas aeruginosa TMN

Microbiotechnology Based Surfactants and Their Applications

Efficacy of alcohol alkoxylate surfactants differing in the molecular structure of the hydrophilic portion to control Phytophthora nicotianae in tomato substrate culture

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