›› 2019, Vol. 31 ›› Issue (1): 130-138.DOI: 10.3969/j.issn.1004-1524.2019.01.17

• Environmental Science • Previous Articles     Next Articles

Effects of exopolysaccharides of lactic acid bacteria on rice growth and soil physicochemical properties

ZHANG Wenping, WANG Qing, HUANG Shichen, WU Peijia, CHENG Xin*   

  1. College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
  • Received:2018-03-23 Online:2019-01-25 Published:2019-04-09

Abstract: To explore the application potential of microbial polysaccharides and its regulatory mechanism on crop growth, rice cultivar Zhunliangyou 608 was used to investigate the effects of exopolysaccharides (EPS) from lactic acid bacteria on biological traits of rice seedlings and physicochemical properties of rice rhizosphere soil. It was shown that application of EPS could promote the growth of rice seedlings and improve rhizosphere soil environment, enhance soil structure, improve soil aggregate stability, mitigate soil acidification, increase soil enzyme activities, and improve soil nutrients. Correlation analysis and principal component analysis showed that the mechanism of rice growth promotion by exopolysaccharides was different from that by glucose. The exopolysaccharides of lactic acid bacteria could be used as a new plant growth regulator.

Key words: lactic acid bacteria, exopolysaccharides, rice, soil

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