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

• 环境科学 • 上一篇    下一篇

乳酸菌胞外多糖对水稻生长及土壤理化性质的影响

张文平, 王清, 黄诗宸, 吴佩佳, 程新*   

  1. 江西农业大学 生物科学与工程学院,江西 南昌 330045
  • 收稿日期:2018-03-23 出版日期:2019-01-25 发布日期:2019-04-09
  • 通讯作者: 程新,E-mail: xincheng@jxau.edu.cn
  • 作者简介:张文平(1993—),男,江西新余人,硕士研究生,主要从事农业资源微生物方向的研究。E-mail: 984360913@qq.com
  • 基金资助:
    国家自然科学基金(31460469); 江西农业大学大学生创新创业训练计划(201710410070)

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

摘要: 为探讨微生物多糖在促进作物生长上的应用效果及其作用机理,以水稻准两优608为供试材料,将不同浓度(100、1 000 mg·L-1)乳酸菌胞外多糖施加于土壤,同时以相同浓度的葡萄糖作为对照,研究乳酸菌胞外多糖对水稻秧苗生物学性状及水稻根际土壤理化性质的影响,同时考查微生物多糖与单糖在水稻促生效果上的差异。结果表明:在土壤中添加不同浓度的乳酸菌多糖能促进水稻幼苗的生长,显著改善土壤结构,提高土壤团聚体稳定性,缓解土壤酸化,提高土壤酶活性,同时对土壤养分也有明显的改善效果。相关性分析表明,外源物质介导的土壤环境因子变化与水稻的生长作用关联极为密切。主成分分析结果证明,乳酸菌胞外多糖对水稻生长及土壤环境因子的作用效果与葡萄糖存在明显区别。乳酸菌胞外多糖可以作为一种新型植物生长调节剂应用于农业生产。

关键词: 乳酸菌, 胞外多糖, 水稻, 土壤

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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