Marine sponge-associated bacteria as a potential source for polyhydroxyalkanoates

作者：Sathiyanarayanan Ganesan; Saibaba Ganesan; Kiran George Seghal; Yang Yung Hun; Selvin Joseph

来源：Critical Reviews in Microbiology, 2017, 43(3): 294-312.

DOI：10.1080/1040841X.2016.1206060

• Marine sponge
• sponge-associated bacteria
• biopolymers
• polyhydroxyalkanoates
• polyhydroxybutyrate

Marine sponges are filter feeding porous animals and usually harbor a remarkable array of microorganisms in their mesohyl tissues as transient and resident endosymbionts. The marine sponge-microbial interactions are highly complex and, in some cases, the relationships are thought to be truly symbiotic or mutualistic rather than temporary associations resulting from sponge filter-feeding activity. The marine sponge-associated bacteria are fascinating source for various biomolecules that are of potential interest to several biotechnological industries. In recent times, a particular attention has been devoted to bacterial biopolymer (polyesters) such as intracellular polyhydroxyalkanoates (PHAs) produced by sponge-associated bacteria. Bacterial PHAs act as an internal reserve for carbon and energy and also are a tremendous alternative for fossil fuel-based polymers mainly due to their eco-friendliness. In addition, PHAs are produced when the microorganisms are under stressful conditions and this biopolymer synthesis might be exhibited as one of the survival mechanisms of sponge-associated or endosymbiotic bacteria which exist in a highly competitive and stressful sponge-mesohyl microenvironment. In this review, we have emphasized the industrial prospects of marine bacteria for the commercial production of PHAs and special importance has been given to marine sponge-associated bacteria as a potential resource for PHAs.

• 出版日期2017-5