Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco
Plant Growth Promoting Rhizobacteria (PGPR) play an essential role in enhancing plant growth, health and yield. In this study, we describe the isolation of PGPR associated with the olive tree (Olea europaea L.) grown in three Moroccan regions of Zouala, Errachidia, and Essaouira. In these regions, w...
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| Format: | Article |
| Language: | English |
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Journal of Pure and Applied Microbiology
2023-12-01
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| Series: | Journal of Pure and Applied Microbiology |
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| Online Access: | https://microbiologyjournal.org/plant-growth-promoting-pgp-performances-and-diversity-of-bacterial-species-isolated-from-olive-olea-europaea-l-rhizosphere-in-arid-and-semi-arid-regions-of-morocco/ |
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| author | Abdessamad Sallami Farid Rachidi Abdelali Idrissi Lahsini Hanane El Khedri Allal Douira Cherkaoui El Modafar Leila Medraoui Abdelkarim Filali-Maltouf |
| author_facet | Abdessamad Sallami Farid Rachidi Abdelali Idrissi Lahsini Hanane El Khedri Allal Douira Cherkaoui El Modafar Leila Medraoui Abdelkarim Filali-Maltouf |
| author_sort | Abdessamad Sallami |
| collection | DOAJ |
| description | Plant Growth Promoting Rhizobacteria (PGPR) play an essential role in enhancing plant growth, health and yield. In this study, we describe the isolation of PGPR associated with the olive tree (Olea europaea L.) grown in three Moroccan regions of Zouala, Errachidia, and Essaouira. In these regions, we isolated 95 PGPRs from rhizosphere of Olive trees, 78% of them were characterized by their tolerance to a salinity of 4-11%. We also found that 39% of these PGPRs were phosphate solubilizing bacteria (PSB) with a solubilization ability greater than 100 µg/mL. In fact, Pantoea agglomerans (MRC_ZO_17) and Enterobacter ludwigii (MRC_ZO_97), showed the highest phosphate solubilization rates of ~450 µg/mL and ~196 µg/mL, respectively. In addition to their ability to solubilize phosphate, various isolates had the ability to produce Indole-3-acetic acid (IAA). For instance, E. ludwigii (MRC_ZO_97) had an IAA production of ~60.48 g/mL. In the region of Zouala, characterized by relatively higher salinity and lower rate of organic matter, Firmicutes isolates account for 87% of the isolated rhizobacteria. Interestingly, we found that the olive tree-associated PGPRs vary significantly between the three sampled regions. Several rhizobacteria isolated in this study are excellent candidates for formulation as bioinocula for plants in saline soils. |
| first_indexed | 2024-03-08T22:52:21Z |
| format | Article |
| id | doaj.art-3b10bd23e2864982bce570ab1c78416c |
| institution | Directory Open Access Journal |
| issn | 0973-7510 2581-690X |
| language | English |
| last_indexed | 2024-03-08T22:52:21Z |
| publishDate | 2023-12-01 |
| publisher | Journal of Pure and Applied Microbiology |
| record_format | Article |
| series | Journal of Pure and Applied Microbiology |
| spelling | doaj.art-3b10bd23e2864982bce570ab1c78416c2023-12-16T10:21:41ZengJournal of Pure and Applied MicrobiologyJournal of Pure and Applied Microbiology0973-75102581-690X2023-12-0117421652178https://doi.org/10.22207/JPAM.17.4.13Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of MoroccoAbdessamad Sallamihttps://orcid.org/0000-0002-3359-4699Farid Rachidihttps://orcid.org/0000-0002-7047-6691Abdelali Idrissi LahsiniHanane El KhedriAllal Douirahttps://orcid.org/0000-0001-6368-4460Cherkaoui El Modafarhttps://orcid.org/0000-0002-0839-5823Leila Medraouihttps://orcid.org/0000-0002-7911-6297Abdelkarim Filali-Maltoufhttps://orcid.org/0000-0002-2727-3389Plant Growth Promoting Rhizobacteria (PGPR) play an essential role in enhancing plant growth, health and yield. In this study, we describe the isolation of PGPR associated with the olive tree (Olea europaea L.) grown in three Moroccan regions of Zouala, Errachidia, and Essaouira. In these regions, we isolated 95 PGPRs from rhizosphere of Olive trees, 78% of them were characterized by their tolerance to a salinity of 4-11%. We also found that 39% of these PGPRs were phosphate solubilizing bacteria (PSB) with a solubilization ability greater than 100 µg/mL. In fact, Pantoea agglomerans (MRC_ZO_17) and Enterobacter ludwigii (MRC_ZO_97), showed the highest phosphate solubilization rates of ~450 µg/mL and ~196 µg/mL, respectively. In addition to their ability to solubilize phosphate, various isolates had the ability to produce Indole-3-acetic acid (IAA). For instance, E. ludwigii (MRC_ZO_97) had an IAA production of ~60.48 g/mL. In the region of Zouala, characterized by relatively higher salinity and lower rate of organic matter, Firmicutes isolates account for 87% of the isolated rhizobacteria. Interestingly, we found that the olive tree-associated PGPRs vary significantly between the three sampled regions. Several rhizobacteria isolated in this study are excellent candidates for formulation as bioinocula for plants in saline soils.https://microbiologyjournal.org/plant-growth-promoting-pgp-performances-and-diversity-of-bacterial-species-isolated-from-olive-olea-europaea-l-rhizosphere-in-arid-and-semi-arid-regions-of-morocco/pgprrhizosphere soildiversityolivephosphate solubilizationabiotic stress |
| spellingShingle | Abdessamad Sallami Farid Rachidi Abdelali Idrissi Lahsini Hanane El Khedri Allal Douira Cherkaoui El Modafar Leila Medraoui Abdelkarim Filali-Maltouf Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco Journal of Pure and Applied Microbiology pgpr rhizosphere soil diversity olive phosphate solubilization abiotic stress |
| title | Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco |
| title_full | Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco |
| title_fullStr | Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco |
| title_full_unstemmed | Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco |
| title_short | Plant Growth Promoting (PGP) Performances and Diversity of Bacterial Species Isolated from Olive (Olea europaea L.) Rhizosphere in Arid and Semi-arid Regions of Morocco |
| title_sort | plant growth promoting pgp performances and diversity of bacterial species isolated from olive olea europaea l rhizosphere in arid and semi arid regions of morocco |
| topic | pgpr rhizosphere soil diversity olive phosphate solubilization abiotic stress |
| url | https://microbiologyjournal.org/plant-growth-promoting-pgp-performances-and-diversity-of-bacterial-species-isolated-from-olive-olea-europaea-l-rhizosphere-in-arid-and-semi-arid-regions-of-morocco/ |
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