Diversity and antagonistic potential of bacteria isolated from marine grass Halodule uninervis

Bibi, Fehmida; Naseer, Muhammad Imran; Hassan, Ahmed M.; Yasir, Muhammad; Al‐Ghamdi, Ahmed A.; Azhar, Esam I.

doi:10.1007/s13205-017-1066-1

Cited by 21 publications

(14 citation statements)

References 37 publications

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“…Antagonists have also been isolated from fruit, and these have shown potential for exploitation as BCA of postharvest diseases [14]. The marine environment is also a deposit of new bioactive compounds; thousands of unique compounds have been isolated from this environment [102,103]. In recent years, any bioactive compound and different samples from marine environments have been searched for.…”

Section: Search For New Antagonistsmentioning

confidence: 99%

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

et al. 2019

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This review deals with the main mechanisms of action exerted by antagonistic bacteria, such as competition for space and nutrients, suppression via siderophores, hydrolytic enzymes, antibiosis, biofilm formation, and induction of plant resistance. These mechanisms inhibit phytopathogen growth that affects postharvest fruit since quality and safety parameters are influenced by the action of these microorganisms, which cause production losses in more than 50% of fruit tree species. The use of synthetic fungicide products has been the dominant control strategy for diseases caused by fungi. However, their excessive and inappropriate use in intensive agriculture has brought about problems that have led to environmental contamination, considerable residues in agricultural products, and phytopathogen resistance. Thus, there is a need to generate alternatives that are safe, ecological, and economically viable to face this problem. Phytopathogen inhibition in fruit utilizing antagonist microorganisms has been recognized as a type of biological control (BC), which could represent a viable and environmentally safe alternative to synthetic fungicides. Despite the ecological benefit that derives from the use of controllers and biological control agents (BCA) at a commercial level, their application and efficient use has been minimal at a global level.

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Section: Search For New Antagonistsmentioning

confidence: 99%

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

et al. 2019

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“…The high importance of antioxidants in the prevention of the diseases, determined by oxidative stress, has drawn the attention to the natural molecules extracted from marine plants, algae and bacteria able to counteract oxidative stress caused by exogenous and endogenous factors [1,2,[23][24][25][26][27][28][29]. Furthermore, the interest in identification of cosmeceutical compounds extracted by marine plants and algae is increasing [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Bioactivity of Extracts from Beach Cast Leaves of Posidonia oceanica (L.) Delile

et al. 2021

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The marine environment is a generous source of biologically active compounds useful for human health. In 50 years, about 25,000 bioactive marine compounds have been identified, with an increase of 5% per year. Peculiar feature of algae and plants is the production of secondary metabolites, such as polyphenols, synthesized as a form of adaptation to environmental stress. Posidonia oceanica is a Mediterranean endemic and dominant seagrass and represents a biologically, ecologically and geologically important marine ecosystem. Within this study, methanolic and ethanolic extracts were generated from fresh and dried Posidonia oceanica leaves, with the aim to employ and valorize the beach cast leaves. The best yield and antioxidant activity (polyphenols content equal to 19.712 ± 0.496 mg GAE/g and DPPH IC50 of 0.090 µg/µL.) were recorded in 70% ethanol extracts (Gd-E4) obtained from leaves dried for two days at 60 °C and ground four times. HPLC analyses revealed the presence of polyphenols compounds (the most abundant of which was chicoric acid) with antioxidant and beneficial properties. Bioactive properties of the Gd-E4 extracts were evaluated in vitro using fibroblast cells line (HS-68), subjected to UV induced oxidative stress. Pre-treatment of cells with Gd-E4 extracts led to significant protection against oxidative stress and mortality associated with UV exposure, thus highlighting the beneficial properties of antioxidants compounds produced by these marine plants against photo damage, free radicals and associated negative cellular effects. Beach cast leaves selection, processing and extraction procedures, and the in vitro assay results suggested the potentiality of a sustainable approach for the biotechnological exploitation of this resource and could serve a model for other marine resources.

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“…Seagrasses are rich in secondary metabolites like polyphenols, flavonoids, and fatty acids, which are the key factors involved in the adaptation to biotic and abiotic environments and for the defense mechanism (Custódio et al, 2016). Many different bioactivities including antioxidant, antiviral and antifungal activities are frequently found in extracts of marine seagrasses such as Halodule uninervis or Posidonia oceanica (Bibi et al, 2018;Benito-González et al, 2019). Seagrasses have potential cytotoxic, antimicrobial, and antifouling activity (Zidorn, 2016;Lamb et al, 2017).…”

Section: Macroalgae and Seagrassesmentioning

confidence: 99%

The Essentials of Marine Biotechnology

Barbier²,

et al. 2021

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Coastal countries have traditionally relied on the existing marine resources (e.g., fishing, food, transport, recreation, and tourism) as well as tried to support new economic endeavors (ocean energy, desalination for water supply, and seabed mining). Modern societies and lifestyle resulted in an increased demand for dietary diversity, better health and well-being, new biomedicines, natural cosmeceuticals, environmental conservation, and sustainable energy sources. These societal needs stimulated the interest of researchers on the diverse and underexplored marine environments as promising and sustainable sources of biomolecules and biomass, and they are addressed by the emerging field of marine (blue) biotechnology. Blue biotechnology provides opportunities for a wide range of initiatives of commercial interest for the pharmaceutical, biomedical, cosmetic, nutraceutical, food, feed, agricultural, and related industries. This article synthesizes the essence, opportunities, responsibilities, and challenges encountered in marine biotechnology and outlines the attainment and valorization of directly derived or bio-inspired products from marine organisms. First, the concept of bioeconomy is introduced. Then, the diversity of marine bioresources including an overview of the most prominent marine organisms and their potential for biotechnological uses are described. This is followed by introducing methodologies for exploration of these resources and the main use case scenarios in energy, food and feed, agronomy, bioremediation and climate change, cosmeceuticals, bio-inspired materials, healthcare, and well-being sectors. The key aspects in the fields of legislation and funding are provided, with the emphasis on the importance of communication and stakeholder engagement at all levels of biotechnology development. Finally, vital overarching concepts, such as the quadruple helix and Responsible Research and Innovation principle are highlighted as important to follow within the marine biotechnology field. The authors of this review are collaborating under the European Commission-funded Cooperation in Science and Technology (COST) Action Ocean4Biotech – European transdisciplinary networking platform for marine biotechnology and focus the study on the European state of affairs.

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Diversity and antagonistic potential of bacteria isolated from marine grass Halodule uninervis

Cited by 21 publications

References 37 publications

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

Antioxidant Bioactivity of Extracts from Beach Cast Leaves of Posidonia oceanica (L.) Delile

The Essentials of Marine Biotechnology

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