Endophytes isolated from ginger rhizome exhibit growth promoting potential for Zea mays

Y. Zhang, Xia Kang, Hanjun Liu, Yihao Liu, Yanmei Li, Xiumei Yu, K. Zhao, Yunfu Gu, Kaiwei Xu, Cuiping Chen, Qiang Chen (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Plant growth promoting bacteria (PGPB) are known to colonize ginger rhizome. A total of 57 strains were isolated and identified by 16S rDNA PCR-RFLP fingerprinting, and were grouped into genera Serratia, Enterobacter, Acinetobacter, Pseudomonas, Stenotrophomonas, Agrobacterium, Ochrobactrum, Bacillus and Tetrathiobacter. Out of 34 representative strains, 14 were positive for indole-3-acetic acid (IAA) production (1.02–49.66 µg ml–1), 16 were able to solubilize phosphate (9.3–233.05 µg ml–1) and 18 showed siderophore activities (9.47–70.66%). Six representative strains with plant growth promoting (PGP) activities boosted the growth of Zea mays, where not only the plant height, leaf area, and biomass yield were significantly improved, plant N, P and K uptakes were also increased. Plants co-inoculated with both PGPB and chemical fertilizer also showed an increased yield. Our study thus indicates that there is an abundance of endophytic bacteria in ginger rhizome, some of which possess promising capabilities for enhancing the growth of Z. mays and have the potential to serve as bio-fertilizers for crops.

Original languageEnglish
Pages (from-to)1302-1314
Number of pages13
JournalArchives of Agronomy and Soil Science
Issue number9
Early online date24 Jan 2018
Publication statusPublished - 29 Jul 2018


  • Ginger rhizome
  • growth promotion
  • identification
  • PGPB
  • Zea mays

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science


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