Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis)
Soil pollution due to heavy metal (HM) contamination has emerged as a global issue worldwide owing to their adverse impacts on plant growth. Bioremediation approaches employing living organisms for HM alleviation have gained considerable attention among scientific community. Biological agents such a...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Plant Stress |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X23002002 |
| _version_ | 1797372863984959488 |
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| author | Arooj Fatima Muhammad Shabaan Qasim Ali Mehreen Malik Hafiz Naeem Asghar Muneeb Aslam Usman Zulfiqar Ashir Hameed Muhammad Nazim Abd El-Zaher M.A. Mustafa Mohamed S Elshikh |
| author_facet | Arooj Fatima Muhammad Shabaan Qasim Ali Mehreen Malik Hafiz Naeem Asghar Muneeb Aslam Usman Zulfiqar Ashir Hameed Muhammad Nazim Abd El-Zaher M.A. Mustafa Mohamed S Elshikh |
| author_sort | Arooj Fatima |
| collection | DOAJ |
| description | Soil pollution due to heavy metal (HM) contamination has emerged as a global issue worldwide owing to their adverse impacts on plant growth. Bioremediation approaches employing living organisms for HM alleviation have gained considerable attention among scientific community. Biological agents such as plant growth-promoting rhizobacteria (PGPR) offer a sustainable way to restore soil health, and their combination with different organic amendments such as press mud (PM) can serve as potential approach for immobilizing HMs in soil. We performed a pot experiment to evaluate the role of individual and combined application of press mud and PGPR strain ‘FQ6’ (identified as Pseudomonas fluorescens) in the phytoremediation of different HMs (Pb, Ni and Cd) and growth promotion of aloe vera. Combined application of FQ6 strain and PM yielded more significant outcomes in terms of all the growth and yield attributes such as leaf length (123 %), plant height (57 %), number of leaves (115 %), fresh and dry weights of gel (246 and 280 %), gel contents (96 %), root length (164 %), root diameter (220 %), no. of root tips (138 %) and root area (315 %), as compared to control. Combined application of FQ6 and PM also led to a significant improvement in different antioxidant activities i.e., CAT (129 %), SOD (48 %), APX (17 %) and POD (83 %) as compared to control. Contrastingly, mobility of these HMs was reduced under combined application of Pseudomonas strain ‘FQ6’ and PM, as there existed a considerable difference between HMs concentrations in soil and plant body. We concluded that joint application of HM-tolerant Pseudomonas FQ6 strain and PM could be an ideal option to alleviate the HM induced adverse impacts on aloe vera by immobilizing them in soil, and subsequently, improving plant growth. |
| first_indexed | 2024-03-08T18:41:58Z |
| format | Article |
| id | doaj.art-703f6880aa2c42e2a9ed7ba0ad4db402 |
| institution | Directory Open Access Journal |
| issn | 2667-064X |
| language | English |
| last_indexed | 2024-03-08T18:41:58Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Plant Stress |
| spelling | doaj.art-703f6880aa2c42e2a9ed7ba0ad4db4022023-12-29T04:46:20ZengElsevierPlant Stress2667-064X2024-03-0111100333Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis)Arooj Fatima0Muhammad Shabaan1Qasim Ali2Mehreen Malik3Hafiz Naeem Asghar4Muneeb Aslam5Usman Zulfiqar6Ashir Hameed7Muhammad Nazim8Abd El-Zaher M.A. Mustafa9Mohamed S Elshikh10Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, PakistanLand Resources Research Institute (LRRI), National Agricultural Research Centre (NARC), Islamabad 44000, Pakistan; Corresponding author.Department of Soil Science, Faculty of Agriculture and Environment, the Islamia University of Bahawalpur, Bahawalpur 63100, PakistanInstitute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, PakistanInstitute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, PakistanDepartment of Agronomy, Faculty of Agriculture, University of Agriculture, Faisalabad, PakistanDepartment of Agronomy, Faculty of Agriculture and Environment, the Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan; Corresponding author.Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, PakistanState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaDepartment of Botany and Microbiology, College of Science, King Saud University, P.O. Box 11451, Riyadh, Saudi ArabiaDepartment of Botany and Microbiology, College of Science, King Saud University, P.O. Box 11451, Riyadh, Saudi ArabiaSoil pollution due to heavy metal (HM) contamination has emerged as a global issue worldwide owing to their adverse impacts on plant growth. Bioremediation approaches employing living organisms for HM alleviation have gained considerable attention among scientific community. Biological agents such as plant growth-promoting rhizobacteria (PGPR) offer a sustainable way to restore soil health, and their combination with different organic amendments such as press mud (PM) can serve as potential approach for immobilizing HMs in soil. We performed a pot experiment to evaluate the role of individual and combined application of press mud and PGPR strain ‘FQ6’ (identified as Pseudomonas fluorescens) in the phytoremediation of different HMs (Pb, Ni and Cd) and growth promotion of aloe vera. Combined application of FQ6 strain and PM yielded more significant outcomes in terms of all the growth and yield attributes such as leaf length (123 %), plant height (57 %), number of leaves (115 %), fresh and dry weights of gel (246 and 280 %), gel contents (96 %), root length (164 %), root diameter (220 %), no. of root tips (138 %) and root area (315 %), as compared to control. Combined application of FQ6 and PM also led to a significant improvement in different antioxidant activities i.e., CAT (129 %), SOD (48 %), APX (17 %) and POD (83 %) as compared to control. Contrastingly, mobility of these HMs was reduced under combined application of Pseudomonas strain ‘FQ6’ and PM, as there existed a considerable difference between HMs concentrations in soil and plant body. We concluded that joint application of HM-tolerant Pseudomonas FQ6 strain and PM could be an ideal option to alleviate the HM induced adverse impacts on aloe vera by immobilizing them in soil, and subsequently, improving plant growth.http://www.sciencedirect.com/science/article/pii/S2667064X23002002Aloe veraAbiotic stressHeavy metalsPGPRPress mud |
| spellingShingle | Arooj Fatima Muhammad Shabaan Qasim Ali Mehreen Malik Hafiz Naeem Asghar Muneeb Aslam Usman Zulfiqar Ashir Hameed Muhammad Nazim Abd El-Zaher M.A. Mustafa Mohamed S Elshikh Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) Plant Stress Aloe vera Abiotic stress Heavy metals PGPR Press mud |
| title | Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) |
| title_full | Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) |
| title_fullStr | Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) |
| title_full_unstemmed | Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) |
| title_short | Integrated application of metal tolerant P. fluorescens and press mud for conferring heavy metal tolerance to aloe vera (Aloe barbadensis) |
| title_sort | integrated application of metal tolerant p fluorescens and press mud for conferring heavy metal tolerance to aloe vera aloe barbadensis |
| topic | Aloe vera Abiotic stress Heavy metals PGPR Press mud |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X23002002 |
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