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固氮葡糖醋杆菌中的细胞内多聚磷酸盐水平影响对非生物胁迫的耐受性和生物膜形成。

Intracellular Polyphosphate Levels in Gluconacetobacter diazotrophicus Affect Tolerance to Abiotic Stressors and Biofilm Formation.

作者信息

Grillo-Puertas Mariana, Delaporte-Quintana Paola, Pedraza Raúl Osvaldo, Rapisarda Viviana Andrea

机构信息

Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, and Instituto de Química Biológica, "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, UNT. San Miguel de Tucumán.

Facultad de Agronomía y Zootecnia, UNT San Miguel de Tucumán.

出版信息

Microbes Environ. 2018 Dec 28;33(4):440-445. doi: 10.1264/jsme2.ME18044. Epub 2018 Nov 7.

DOI:10.1264/jsme2.ME18044
PMID:30404971
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6307995/
Abstract

Gluconacetobacter diazotrophicus is a plant growth-promoting bacterium that is used as a bioinoculant. Phosphate (Pi) modulates intracellular polyphosphate (polyP) levels in Escherichia coli, affecting cellular fitness and biofilm formation capacity. It currently remains unclear whether environmental Pi modulates polyP levels in G. diazotrophicus to enhance fitness in view of its technological applications. In high Pi media, cells accumulated polyP and degraded it, thereby improving survival, tolerance to environmental stressors, biofilm formation capacity on abiotic and biotic surfaces, and competence as a growth promoter of strawberry plants. The present results support the importance of Pi and intracellular polyP as signals involved in the survival of G. diazotrophicus.

摘要

重氮营养醋杆菌是一种促进植物生长的细菌，用作生物肥料。磷酸盐（Pi）可调节大肠杆菌细胞内的多聚磷酸盐（polyP）水平，影响细胞适应性和生物膜形成能力。鉴于其技术应用，目前尚不清楚环境中的Pi是否会调节重氮营养醋杆菌中的polyP水平以提高其适应性。在高Pi培养基中，细胞积累并降解polyP，从而提高了存活率、对环境应激源的耐受性、在非生物和生物表面上的生物膜形成能力以及作为草莓植物生长促进剂的能力。目前的结果支持了Pi和细胞内polyP作为参与重氮营养醋杆菌生存的信号的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/2e3cb961f026/33_440_4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/2122f9ba38f4/33_440_1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/421bb504411a/33_440_2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/9458b7b1a11e/33_440_3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/2e3cb961f026/33_440_4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/2122f9ba38f4/33_440_1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/421bb504411a/33_440_2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/9458b7b1a11e/33_440_3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1753/6307995/2e3cb961f026/33_440_4.jpg

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