Effects of Phosphorus‑dissolving Dark Septate Endophytes on the Growth of Blueberry

Qixin Luo; Rui Hou; Xiaojing Shang; Si Li

doi:10.1007/s12275-023-00080-2

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Effects of Phosphorus‑dissolving Dark Septate Endophytes on the Growth of Blueberry: Qixin Luo , Rui Hou , Xiaojing Shang , Si Li; Journal of Microbiology 2023;61(9):837-851.
DOI: https://doi.org/10.1007/s12275-023-00080-2
Published online: October 5, 2023

College of Forestry, Guizhou University, Guiyang 550025, People’s Republic of ChinaCollege of Forestry, Guizhou University, Guiyang 550025, People’s Republic of China

Corresponding author: Rui Hou ,

Received: 27 June 2023 • Revised: 18 August 2023 • Accepted: 4 September 2023

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Abstract

Dark septate endophytes (DSEs) are widely distributed and improve plant growth. DSEs secrete large amounts of enzymes to mineralize insoluble phosphorus in soil and convert it into soluble phosphorus, promoting plant uptake of phosphorus. However, the effects of DSEs with phosphate-solubilizing ability on host plants need further study. In this study, phosphorusdissolving DSEs were screened for growth-promoting effects. We isolated, identified and characterized three DSE species (Thozetella neonivea, Pezicula ericae and Hyaloscyphaceae sp.) showing phosphate-solubilizing ability. The impact of single, dual or triple inoculation of DSEs on blueberry plant characteristics was studied. Their effects on colonization intensity, seedling biomass, nutrients in plants and soil, and activities of plant resistance enzymes and soil enzymes were markedly upregulated relative to the control (P < 0.05). The available phosphorus and acid phosphatase levels in different combinations were significantly increased. These findings indicate that the application of the three DSEs may be valuable in facilitating the cultivation of blueberry with a higher biomass and improved plant quality.

Keywords: Enterococcus faecalis;environmental stress;plasmid stability;toxin-antitoxin system

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Effects of Phosphorus‑dissolving Dark Septate Endophytes on the Growth of Blueberry

J. Microbiol. 2023;61(9):837-851. Published online October 5, 2023

DOI: https://doi.org/10.1007/s12275-023-00080-2

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