Effect of Plant-Growth-Promoting Fungi on Eggplant ( Solanum melongena L.) in New Reclamation Land

Xuqing Li, Dingyi Li, Jianli Yan, Ya Zhang, Hong Wang, Jingze Zhang, Temoor Ahmed and Bin Li
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Xuqing Li: Institute of Vegetable, Hangzhou Academy of Agricultural Science, Hangzhou 310024, China
Dingyi Li: Department of Biological Environment, Material and Environmental College, Shanxi Jinzhong Institute of Technology, Jinzhong 030600, China
Jianli Yan: Institute of Vegetable, Hangzhou Academy of Agricultural Science, Hangzhou 310024, China
Ya Zhang: Institute of Vegetable, Hangzhou Academy of Agricultural Science, Hangzhou 310024, China
Hong Wang: Institute of Vegetable, Hangzhou Academy of Agricultural Science, Hangzhou 310024, China
Jingze Zhang: Institute of Biotechnology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
Temoor Ahmed: Institute of Biotechnology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
Bin Li: Institute of Biotechnology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China

Agriculture, 2021, vol. 11, issue 11, 1-16

Abstract: Land reclamation may expand the supply of usable land for food security. Immature soil is not suitable for plant growth and needs to be amended by the addition of organic matter and plant growth-promoting (PGP) microorganisms. However, the effects of different PGP fungi on plant growth in immature soil are largely unexplored. In order to obtain beneficial soil microorganisms with a good PGP ability in new reclamation land, 162 fungal isolates were isolated from different abandoned wastelands, four isolates of which were obtained in this study by the screening of P solubilization, siderophore production, and indole acetic acid (IAA) production. The result of this study revealed that isolate HZ123 had the highest ability to solubilize P and produce siderophores and IAA, followed by HZ23, HZ10, and HZ06. Based on the results of morphological and molecular analyses, isolate HZ06 was identified as Penicillium oxalicum , isolates HZ23 and HZ10 were identified as Aspergillus brunneoviolaceus , and isolate HZ123 was identified as Aspergillus tubingensis . Furthermore, the results of in vivo PGP assays demonstrated that isolate HZ123 has a minimal negative effect on the growth of eggplant; however, the other three isolates, particularly isolate HZ06, caused the greatest increase in eggplant biomasses. Overall, these results indicate that isolate HZ06 has great potential as a PGP fungus to develop biofertilizer for application in eggplant production in immature soil from new reclamation land.

Keywords: soil amendment; phylogenetic analysis; Penicillium; Aspergillus; immature soil (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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