Journal article
Interactive effects of potassium and mycorrhizal fungi on glomalin and biochemical responses of sunflower grown in a Pb and Zn contaminated soil
Soil and Sediment Contamination: An International Journal
2021
Abstract
It is well documented that sole application of potassium (K) or mycorrhizal fungi can alleviate heavy metal stress in plants. As an indicator of the efficient defense in the mycorrhizal fungi-plant system, glomalin synthesis in the rhizosphere can be determined. In this study, interactive effects of mycorrhizal fungi (MY) and K on glomalin content, heavy metal uptake and mycorrhizal properties of sunflower plants were examined with three soil K levels (0, 100, and 200 mg K kg−1 using K2SO4). The three levels of mycorrhization are: i) no mycorrhizal inoculation, ii) Rhizophagus irregularis inoculation, and iii) mixed mycorrhizal inoculum application. Joint application of potassium and mycorrhiza significantly increased the percentage of root colonization and easily extractable glomalin (EEG), showing 56% root colonization in the treatment of K100 + mixed mycorrhiza and 178 µg EEG g−1 in the treatment of K200 + mixed mycorrhiza. Joint application of MY and K significantly reduced the translocation of heavy metals to the shoot of the plants. The highest total uptake of Zn by plants per pot (2.01 mg pot −1) and Pb (0.78 mg pot −1) were found in non-mycorrhizal plants. The MY and K treatments also increased the chlorophyll content and leaf area index by 57%. This study concluded that application of potassium and mycorrhizal fungi enhanced glomalin production and increased plant resistance to heavy metal stress.
Details
- Title
- Interactive effects of potassium and mycorrhizal fungi on glomalin and biochemical responses of sunflower grown in a Pb and Zn contaminated soil
- Authors/Creators
- M. Jahantigh (Author/Creator) - University of Maryland College of Agriculture and Natural ResourcesZ. Ahmadabadi (Author/Creator) - Shiraz UniversityB. Motesharezadeh (Author/Creator) - University of Maryland College of Agriculture and Natural ResourcesH.A. Alikhani (Author/Creator)S.M. Hosseini (Author/Creator) - Islamic Azad University, Science and Research BranchQ. Ma (Author/Creator) - Murdoch University
- Publication Details
- Soil and Sediment Contamination: An International Journal
- Publisher
- Taylor & Francis
- Identifiers
- 991005544533207891
- Murdoch Affiliation
- College of Science, Health, Engineering and Education
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.488 Mycorrhizal Symbiosis
- Web Of Science research areas
- Environmental Sciences
- ESI research areas
- Environment/Ecology