Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch
Pecan cultivation holds significant global importance. Salinity negatively affects the physiology and metabolism of the plant. However, certain plant growth-promoting rhizobacteria (PGPR) have the ability to reduce salt stress in plants. The objective was to analyze the effects of the rhizobacteria...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/12/3045 |
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| author | Rubén Palacio-Rodríguez Jorge Sáenz-Mata Ricardo Trejo-Calzada Perla Patricia Ochoa-García Jesús G. Arreola-Ávila |
| author_facet | Rubén Palacio-Rodríguez Jorge Sáenz-Mata Ricardo Trejo-Calzada Perla Patricia Ochoa-García Jesús G. Arreola-Ávila |
| author_sort | Rubén Palacio-Rodríguez |
| collection | DOAJ |
| description | Pecan cultivation holds significant global importance. Salinity negatively affects the physiology and metabolism of the plant. However, certain plant growth-promoting rhizobacteria (PGPR) have the ability to reduce salt stress in plants. The objective was to analyze the effects of the rhizobacteria <i>Bacillus paralicheniformis</i> strain LBEndo1 on the development of pecan seedlings under salinity stress conditions. Two factors were analyzed: the presence of saline stress and the bacterial inoculation. The bacterial application was conducted at a concentration of 1 × 10<sup>8</sup> CFU/mL, and irrigation was administered every third day with 80 mL of water containing 50 mM NaCl. The results show that the rhizobacteria has a maximum tolerance of 15% salinity. Furthermore, the inoculation of PGPR significantly increased the biomass of the seedlings, including the dry weight of leaves, stem, and roots, as well as the stem diameter and height. Furthermore, seedlings that interacted with the rhizobacteria exhibited superior development under saline conditions, with significant increases of 105.5% in chlorophyll concentration and 112% in proline accumulation compared to non-inoculated seedlings. Additionally, a remarkable reduction in leaf damage caused by salt stress was observed. In conclusion, the LBEndo1 rhizobacteria, being a strain resistant to salinity and possessing multiple mechanisms to promote growth while mitigating salt stress, has the potential to be utilized in pecan seedlings to alleviate stress caused by salinity and increases biomass. |
| first_indexed | 2024-03-08T21:04:31Z |
| format | Article |
| id | doaj.art-78ed47b897444fcb8de71f963732bd81 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-08T21:04:31Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-78ed47b897444fcb8de71f963732bd812023-12-22T13:46:46ZengMDPI AGAgronomy2073-43952023-12-011312304510.3390/agronomy13123045Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. KochRubén Palacio-Rodríguez0Jorge Sáenz-Mata1Ricardo Trejo-Calzada2Perla Patricia Ochoa-García3Jesús G. Arreola-Ávila4Faculty of Biological Sciences, Juarez University of the State of Durango, Gómez Palacio 35010, MexicoFaculty of Biological Sciences, Juarez University of the State of Durango, Gómez Palacio 35010, MexicoRegional Universitary Unit on Arid Lands, Autonomous University of Chapingo, Bermejillo 35230, MexicoRegional Universitary Unit on Arid Lands, Autonomous University of Chapingo, Bermejillo 35230, MexicoRegional Universitary Unit on Arid Lands, Autonomous University of Chapingo, Bermejillo 35230, MexicoPecan cultivation holds significant global importance. Salinity negatively affects the physiology and metabolism of the plant. However, certain plant growth-promoting rhizobacteria (PGPR) have the ability to reduce salt stress in plants. The objective was to analyze the effects of the rhizobacteria <i>Bacillus paralicheniformis</i> strain LBEndo1 on the development of pecan seedlings under salinity stress conditions. Two factors were analyzed: the presence of saline stress and the bacterial inoculation. The bacterial application was conducted at a concentration of 1 × 10<sup>8</sup> CFU/mL, and irrigation was administered every third day with 80 mL of water containing 50 mM NaCl. The results show that the rhizobacteria has a maximum tolerance of 15% salinity. Furthermore, the inoculation of PGPR significantly increased the biomass of the seedlings, including the dry weight of leaves, stem, and roots, as well as the stem diameter and height. Furthermore, seedlings that interacted with the rhizobacteria exhibited superior development under saline conditions, with significant increases of 105.5% in chlorophyll concentration and 112% in proline accumulation compared to non-inoculated seedlings. Additionally, a remarkable reduction in leaf damage caused by salt stress was observed. In conclusion, the LBEndo1 rhizobacteria, being a strain resistant to salinity and possessing multiple mechanisms to promote growth while mitigating salt stress, has the potential to be utilized in pecan seedlings to alleviate stress caused by salinity and increases biomass.https://www.mdpi.com/2073-4395/13/12/3045PGPRsalinity stressgrowth promotionpecan |
| spellingShingle | Rubén Palacio-Rodríguez Jorge Sáenz-Mata Ricardo Trejo-Calzada Perla Patricia Ochoa-García Jesús G. Arreola-Ávila Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch Agronomy PGPR salinity stress growth promotion pecan |
| title | Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch |
| title_full | Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch |
| title_fullStr | Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch |
| title_full_unstemmed | Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch |
| title_short | Halotolerant Rhizobacteria Promote Plant Growth and Decrease Salt Stress in <i>Carya illinoinensis</i> (Wangenh.) K. Koch |
| title_sort | halotolerant rhizobacteria promote plant growth and decrease salt stress in i carya illinoinensis i wangenh k koch |
| topic | PGPR salinity stress growth promotion pecan |
| url | https://www.mdpi.com/2073-4395/13/12/3045 |
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