Diversity and Plant Growth-Promoting Properties of Endophytic Microorganisms from Saussurea bogedaensis and Its Newly Recorded Distribution Site in Mongolia

DOI

10.2991/978-94-6463-837-0_12How to use a DOI?

Keywords

Saussurea bogedaensis; ITS region; 16S rDNA sequencing; indole acetic acid; phosphate solubilization; zinc solubilization

Abstract

Saussurea bogedaensis is a critically endangered medicinal plant native to high-altitude, arid environments in China and Mongolia. This study reports a new occurrence of S. bogedaensis in the Mongol Altai region of Mongolia, thereby expanding its previously known geographic range. Molecular identification using the ITS region sequencing confirmed the plant’s identity. A total of nine culturable endophytic microorganisms, five bacterial and four fungal strains, were isolated from the stem, leaf, and flower tissues of S. bogedaensis and identified based on 16S rRNA and ITS rDNA sequences. The bacterial isolates were assigned to the genera Pseudomonas and Bacillus, while the fungal strains were identified as belonging to the genera Fusarium and Mucor. In vitro assays revealed that Pseudomonas strains P20-L2 and P20-L3 exhibited the strongest plant growth-promoting properties (PGPP), including high IAA production (up to 268.77 µg/ml), efficient zinc solubilization (solubilization index, SI: 4.3), inorganic phosphate solubilization (SI: 4.2), and organic phosphate solubilization (SI: 2.7) capabilities. Fusarium sp. P20-S1-1 also demonstrated broad mineral solubilization. These findings not only provide the first insights into the culturable endophytic microbiota of S. bogedaensis, but also identify promising microbial candidates for biofertilizer development and assisted propagation strategies for the conservation of endangered flora.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Enkh-Amgalan Jigjiddorj
AU  - Marjangul Nuramkhaan
AU  - Bumtsend Baymbasuren
AU  - Amarbayasgalan Maidarjav
AU  - Sarantuya Jargalsaikhan
AU  - Munkhjargal Sengenorov
AU  - Batbileg Batsaikhan
AU  - Munkhgerel Khurelchuluun
AU  - Angarag Gankhuyag
AU  - Munkh-Ochir Davaatseren
PY  - 2025
DA  - 2025/09/17
TI  - Diversity and Plant Growth-Promoting Properties of Endophytic Microorganisms from Saussurea bogedaensis and Its Newly Recorded Distribution Site in Mongolia
BT  - Proceedings of the International Biological Conference in Mongolia 2025 (IBCM 2025)
PB  - Atlantis Press
SP  - 168
EP  - 183
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-837-0_12
DO  - 10.2991/978-94-6463-837-0_12
ID  - Jigjiddorj2025
ER  -