Journal
RHIZOSPHERE
Volume 19, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rhisph.2021.100363
Keywords
Arbuscular mycorrhizal fungi; Dalbergia cochinchinensis; Mycorrhiza helper bacteria; Pterocarpus macrocarpus; Rhizosphere
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Funding
- Plant Genetic Conservation Project under The Royal Initiative of Her Royal Highness Princess Maha Chakri Sirindhorn, Khon Kaen University [FY 61002018, FY 62000120013]
- Salt-tolerant Rice Research Group
- Microbial Resources and Applications group at Faculty of Science, Khon Kaen University, Thailand
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The study found that co-inoculation of arbuscular mycorrhizal fungi (AMF) and mycorrhizal helper bacteria (MHB) significantly promoted the growth of siamese rosewood and burma padauk seedlings, increasing plant biomass, nitrogen and phosphorus uptake, and chlorophyll content. Co-inoculation of AMF and MHB was more effective in enhancing plant growth parameters and improving phosphorus and nitrogen uptake in seedlings compared to single inoculation. This suggests that the AMF and MHB used in the study could be utilized as biofertilizers for the growth of siamese rosewood and burma padauk seedlings.
This study aims to evaluate the efficiency of the co-inoculation of arbuscular mycorrhizal fungi (AMF) and mycorrhizal helper bacteria (MHB) to promote the growth of siamese rosewood and burma padauk seedlings. The experiment was carried out in the pot experiment for 120 days. Three different species of AMF, Glomus clarum KKU-CLD-1, Clomus proliferum PC2-2 and Acaulospora mellea KKU-NBP-NB-2, were individually inoculated with and without the Stenotrophomonas maltophilia KKU-CLD-4.3-3-1. The results showed that the mycorrhizal helper bacteria strain S. maltophilia KKU-CLD-4.3-3-1 isolated from C. proliferum PC2-2 possessed high plant-growth promoting properties. The co-inoculation of our AMF species and MHB, especially in the treatment of C. proliferum PC2-2 and S. maltophilia KKU-CLD-4.3-3-1 could provide higher plant biomass, more nitrogen and phosphorus uptake and higher chlorophyll A, B contents compared to the non inoculated control. The maximum growth of both types of seedlings was promoted by the treatment consisting of A. mellea KKU-NBP-SB-2, S. maltophilia KKU-CLD-4.3-3-1, and rock phosphate fertilizer. Co inoculation of AMF and MHB could better promote plant growth parameters and improved phosphorus and nitrogen uptake in both types of seedlings than in the treatment with single inoculation. These suggested that our AMF and MHB were capable of being used as biofertilizer for the growth of Siamese rosewood and Burma padauk seedlings.
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