Complexity of cyanobacterial exopolysaccharides: composition, structures, inducing factors and putative genes involved in their biosynthesis and assembly

被引：475

作者：

Pereira, Sara ^{[1
,2
]}

Zille, Andrea ^{[1
]}

Micheletti, Ernesto ^{[3
]}

Moradas-Ferreira, Pedro ^{[1
,4
]}

De Philippis, Roberto ^{[3
]}

Tamagnini, Paula ^{[1
,2
]}

机构：

[1] Univ Porto, IBMC, P-4150180 Oporto, Portugal

[2] Univ Porto, Dept Bot, Fac Ciencias, P-4150180 Oporto, Portugal

[3] Univ Florence, Dept Agr Biotechnol, Florence, Italy

[4] Univ Porto, ICBAS, P-4150180 Oporto, Portugal

来源：

FEMS MICROBIOLOGY REVIEWS | 2009年 / 33卷 / 05期

基金：

芬兰科学院;

关键词：

cyanobacteria; exopolysaccharides; extracellular polymeric substance biosynthesis; extracellular polymeric substances; released polysaccharides; BLUE-GREEN-ALGA; DIFFERENT COLONY MORPHOLOGIES; UV-SCREENING COMPOUND; HEAVY-METAL REMOVAL; EXTRACELLULAR POLYSACCHARIDE; TERRESTRIAL CYANOBACTERIUM; GLOEOTHECE SP; FLOS-AQUAE; CAPSULAR POLYSACCHARIDES; DESICCATION TOLERANCE;

D O I：

10.1111/j.1574-6976.2009.00183.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Cyanobacterial extracellular polymeric substances (EPS) are mainly composed of high-molecular-mass heteropolysaccharides, with variable composition and roles according to the microorganism and the environmental conditions. The number of constituents - both saccharidic and nonsaccharidic - and the complexity of structures give rise to speculations on how intricate their biosynthetic pathways could be, and how many genes may be involved in their production. However, little is known regarding the cyanobacterial EPS biosynthetic pathways and regulating factors. This review organizes available information on cyanobacterial EPS, including their composition, function and factors affecting their synthesis, and from the in silico analysis of available cyanobacterial genome sequences, proposes a putative mechanism for their biosynthesis.

引用

页码：917 / 941

页数：25

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