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Plant growth-promoting bacterium Pseudomonas fluorescens FR1 secrets a novel type of extracellular polyhydroxybutyrate polymerase involved in abiotic stress response in plants.

作者信息

Stritzler Margarita, Diez Tissera Ana, Soto Gabriela, Ayub Nicolás

机构信息

Instituto de Genética, CICVyA (INTA), De los reseros S/N, Castelar C25(1712), Buenos Aires, Argentina.

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.

出版信息

Biotechnol Lett. 2018 Oct;40(9-10):1419-1423. doi: 10.1007/s10529-018-2576-6. Epub 2018 May 24.

DOI:10.1007/s10529-018-2576-6
PMID:29797149
Abstract

OBJECTIVES

Identification of novel microbial factors contributing to plant protection against abiotic stress.

RESULTS

The genome of plant growth-promoting bacterium Pseudomonas fluorescens FR1 contains a short mobile element encoding a novel type of extracellular polyhydroxybutyrate (PHB) polymerase (PhbC) associated with a type I secretion system. Genetic analysis using a phbC mutant strain and plants showed that this novel extracellular enzyme is related to the PHB production in planta and suggests that PHB could be a beneficial microbial compound synthesized during plant adaptation to cold stress.

CONCLUSION

Extracellular PhbC can be used as a new tool for improve crop production under abiotic stress.

摘要

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