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Premna Serratifolia L.: Potential as Nutraceutical Panacea
Published in Megh R. Goyal, Preeti Birwal, Santosh K. Mishra, Phytochemicals and Medicinal Plants in Food Design, 2022
Kadakasseril V. George, Lekshmi V. Bose, Solomon Habtemariam, Jose Mathew
In another study, Rahman et al. [98] examined antibacterial potential of the essential oil and various organic extracts of P. integrifolia and these fractions were effective against Sarcinalutea, B. subtilis, E. coli, Pseudomonas sp., Klebsiella pneumoniae and Xanthomonas campestries. Rajendran studied the broad-spectrum antimicrobial activity of its stem wood/bark extracts in different solvents against certain bacteria and fungi and the results were compared to ciprofloxacin and amphotericin-B [101]. The plant material was also screened against selected Gram +ve/Gram -ve bacterial organisms and fungi [104].
Quorum Sensing and Essential Oils
Published in K. Hüsnü Can Başer, Gerhard Buchbauer, Handbook of Essential Oils, 2020
Isabel Charlotte Soede, Gerhard Buchbauer
Whereas Solano et al. believe that QS is most reasonable in the last step of biofilm disassembly, as the signal density reaches sufficient concentrations only then (Solano and Echeverz, 2014), research has shown that QS influences all stages of biofilm formation (Parsek and Greenberg, 2005). In human pathogens Staphylococcus aureus (Yarwood and Schlievert, 2003), Helicobacter pylori (Cole et al., 2004), and Salmonella enterica (Prouty et al., 2002) QS plays a role in the attachment phase of biofilm formation (Costerton et al., 1995). An example for an AHL-based QS system responsible for biofilm maturation is Aeromonas hydrophila (Lynch et al., 2002). Lynch et al. found out that the plant pathogen Xanthomonas campestris uses a QS system which is involved in biofilm dispersal (Lynch et al., 2002).
Antibacterial Activity of Seaweeds and their Extracts
Published in Leonel Pereira, Therapeutic and Nutritional Uses of Algae, 2018
Paulert et al. (2007) studied the antimicrobial activity of cell-wall polysaccharides and crude extracts from the seaweed Ulva fasciata against bacteria. The antibacterial activity was assessed by agar diffusion assay, and by means of the broth dilution method estimating the minimum inhibitory concentration (MIC). The following human pathogenic bacteria were tested: Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus cereus, Micrococcus luteus, and two plant pathogens: Xanthomonas campestris and Erwinia carotovora. Both methanol soluble and methanol insoluble extracts were active against P. aeruginosa, X. campestris, and E. carotovora. The highest activity of extracts was observed against E. carotovora (MIC = 1 mg mL−1). In contrast, ulvans did not show any in vitro activity towards all test organisms.
Quorum sensing inhibitors: a patent review (2014–2018)
Published in Expert Opinion on Therapeutic Patents, 2018
Xin Chen, Likun Zhang, Mingxiang Zhang, Huayu Liu, Panrui Lu, Kejiang Lin
Xanthomonas is a phytopathogen that infects at least 124 kinds of monocotyledons and 268 kinds of dicotyledons. It has been proposed that Burkholderia anthina HN-8 (GDMCC NO.60289) inhibits Xanthomonas，Burkholderia cepacia and P. aeruginosa and thus control plant diseases [75]. Acinetobacter lactucae QL-1 (CCTCC NO.M2017487) can use DSF as its only carbon source and degrade 2 mM of the signal molecule within 15 hours [76]. As aforementioned, the degradation of the signal molecule blocks QS signal transduction efficiently. Deng et al. separated an enzyme FadD1 from P. aeruginosa that degrades the DSF in X. campestris pv. Campestris and BDSF in B. cepacia. Thus, this enzyme may be used to control plant diseases caused by X. campestris or B. cepacia and reduce potential agricultural economic loss [77].
Antimicrobial susceptibility and sessile behaviour of bacteria isolated from a minimally processed vegetables plant
Published in Biofouling, 2018
Ana Meireles, Sílvia Faia, Efstathios Giaouris, Manuel Simões
The 20 bacterial isolates were also tested for their aggregation potential. The results obtained (Table 4) show that only R. erythopolis was able to form aggregates. Since R. erythropolis was the only isolate able to autoaggregate, it was also combined with the following seven other bacterial strains isolated from the same point in the MPV plant (conveyor belt after optical sorting in the high care area): Exiguobacterium sp., Pseudomonas oryzihabitans, Pseudomonas poae, Pseudomonas sp., R. aquatilis, S. maltophilia and Xanthomonas campestris, to see whether any coaggregation could occur. However, the results did not reveal any significant degree of coaggregation (Table 5).
Common therapeutic advances for Duchenne muscular dystrophy (DMD)
Published in International Journal of Neuroscience, 2021
Arash Salmaninejad, Yousef Jafari Abarghan, Saeed Bozorg Qomi, Hadi Bayat, Meysam Yousefi, Sara Azhdari, Samaneh Talebi, Majid Mojarrad
Xanthomonas is a genus of proteobacteria, which is cause to plant diseases. This organism encodes a kind of DNA binding proteins known as transcription activator-like effectors (TALEs). TALE contains tandem repeat variable diresidue (RVD). Each RVD recognizes a single nucleotide and an array of them together can precisely target specific DNA sequences [151]. In contrast to difficulties in designing ZFN, engineering of TALEs is quite simple. Because re-engineering of the linkage between domains is not required to make long arrays of TALEs which are capable to target specific sites in host genome. Following nearly two decades of efforts based on ZFNs, many different effector domains such as nucleases, transcription activator or inhibitor, recombinases and other fusions have been made available to fuse to TALE array for targeted genetic modifications [152]. Although single base recognition feature of TALE-DNA binding domains provides a wide range of design flexibility, cloning of repeat TALE arrays remains as a technical challenge due to numerous identical repeat sequences [153]. To overcome this issue, some different strategies have been developed that allow rapid construction of custom TALE arrays. These methods comprise ‘Golden Gate’ molecular cloning, high-throughput solid-phase assembly and ligation-independent cloning techniques. Similar to ZFNs, TALENs can be utilized for correcting the underlying cause of the diseases such as DMD [154]. Li et al. illustrated that TALEN-based genome editing in DMD patient-derived iPSCs lead to correction of DMD gene framework, which cause significant enhancement of dystrophin full length expression, and also differentiation of these cells into myogenic cells by deleting exons and knocking in exons [70].