Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato
Beneficial bacteria living in the rhizosphere pose several implications on plant growth promotion and are highly desirable for sustainable agriculture. In the current study, we explored the ameliorative capacity of Leifsonia xyli SE134, a plant growth-promoting rhizobacteria (PGPR), against copper (...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2017-01-01
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| Series: | Journal of Plant Interactions |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17429145.2017.1370142 |
| _version_ | 1828771700675706880 |
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| author | Sang-Mo Kang Muhammad Waqas Muhammad Hamayun Sajjad Asaf Abdul Latif Khan Ah-Yeong Kim Yeon-Gyeong Park In-Jung Lee |
| author_facet | Sang-Mo Kang Muhammad Waqas Muhammad Hamayun Sajjad Asaf Abdul Latif Khan Ah-Yeong Kim Yeon-Gyeong Park In-Jung Lee |
| author_sort | Sang-Mo Kang |
| collection | DOAJ |
| description | Beneficial bacteria living in the rhizosphere pose several implications on plant growth promotion and are highly desirable for sustainable agriculture. In the current study, we explored the ameliorative capacity of Leifsonia xyli SE134, a plant growth-promoting rhizobacteria (PGPR), against copper (Cu) stress on tomato grown under elevated Cu levels of 50 and 100 mM. Initially, L. xyli SE134 modulated innate gibberellins (GAs) and indole-3-acetic acid (IAA) metabolism in response to elevated Cu toxicity. The IAA contents increased, whereas that of bioactive GAs decreased in relation to Cu concentration gradient in the broth media. Furthermore, exposure to elevated Cu caused detrimental effects on the physiological attributes as revealed by attenuated shoot length, root length, stem diameter, shoot dry weight, root dry weight, and chlorophyll content in non-inoculated tomatoes as compared to L. xyli SE134 inoculated plants. The growth rescuing effect of L. xyli SE134 may be attributed to the modulation of endogenous amino acids contents in plants, such as glutamic acid, threonine, phenylalanine, glycine, proline, and arginine. Moreover, L. xyli SE134 inoculation stimulated total polyphenol and flavonoid content, reduced super oxide dismutase activity, strongly inhibited Cu, and increased phosphorus and iron content in plants grown under elevated Cu stress. In the absence of Cu toxicity, L. xyli SE134 significantly enhanced amino acid content, improved total flavonoids, and increased phosphorus content, thus resulting in higher plant growth. |
| first_indexed | 2024-12-11T14:30:43Z |
| format | Article |
| id | doaj.art-27298e7748d34cfbafbf654e615abd6c |
| institution | Directory Open Access Journal |
| issn | 1742-9145 1742-9153 |
| language | English |
| last_indexed | 2024-12-11T14:30:43Z |
| publishDate | 2017-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Plant Interactions |
| spelling | doaj.art-27298e7748d34cfbafbf654e615abd6c2022-12-22T01:02:27ZengTaylor & Francis GroupJournal of Plant Interactions1742-91451742-91532017-01-0112137338010.1080/17429145.2017.13701421370142Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomatoSang-Mo Kang0Muhammad Waqas1Muhammad Hamayun2Sajjad Asaf3Abdul Latif Khan4Ah-Yeong Kim5Yeon-Gyeong Park6In-Jung Lee7School of Applied Biosciences, Kyungpook National UniversitySchool of Applied Biosciences, Kyungpook National UniversitySchool of Applied Biosciences, Kyungpook National UniversitySchool of Applied Biosciences, Kyungpook National UniversityUoN Chair of Oman’s Medicinal Plants & Marine Natural Products, University of NizwaSchool of Applied Biosciences, Kyungpook National UniversitySchool of Applied Biosciences, Kyungpook National UniversitySchool of Applied Biosciences, Kyungpook National UniversityBeneficial bacteria living in the rhizosphere pose several implications on plant growth promotion and are highly desirable for sustainable agriculture. In the current study, we explored the ameliorative capacity of Leifsonia xyli SE134, a plant growth-promoting rhizobacteria (PGPR), against copper (Cu) stress on tomato grown under elevated Cu levels of 50 and 100 mM. Initially, L. xyli SE134 modulated innate gibberellins (GAs) and indole-3-acetic acid (IAA) metabolism in response to elevated Cu toxicity. The IAA contents increased, whereas that of bioactive GAs decreased in relation to Cu concentration gradient in the broth media. Furthermore, exposure to elevated Cu caused detrimental effects on the physiological attributes as revealed by attenuated shoot length, root length, stem diameter, shoot dry weight, root dry weight, and chlorophyll content in non-inoculated tomatoes as compared to L. xyli SE134 inoculated plants. The growth rescuing effect of L. xyli SE134 may be attributed to the modulation of endogenous amino acids contents in plants, such as glutamic acid, threonine, phenylalanine, glycine, proline, and arginine. Moreover, L. xyli SE134 inoculation stimulated total polyphenol and flavonoid content, reduced super oxide dismutase activity, strongly inhibited Cu, and increased phosphorus and iron content in plants grown under elevated Cu stress. In the absence of Cu toxicity, L. xyli SE134 significantly enhanced amino acid content, improved total flavonoids, and increased phosphorus content, thus resulting in higher plant growth.http://dx.doi.org/10.1080/17429145.2017.1370142PGPRCu stressphytohormonesamino acidsuper oxide dismutasephenolsflavonoidstomato |
| spellingShingle | Sang-Mo Kang Muhammad Waqas Muhammad Hamayun Sajjad Asaf Abdul Latif Khan Ah-Yeong Kim Yeon-Gyeong Park In-Jung Lee Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato Journal of Plant Interactions PGPR Cu stress phytohormones amino acid super oxide dismutase phenols flavonoids tomato |
| title | Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato |
| title_full | Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato |
| title_fullStr | Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato |
| title_full_unstemmed | Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato |
| title_short | Gibberellins and indole-3-acetic acid producing rhizospheric bacterium Leifsonia xyli SE134 mitigates the adverse effects of copper-mediated stress on tomato |
| title_sort | gibberellins and indole 3 acetic acid producing rhizospheric bacterium leifsonia xyli se134 mitigates the adverse effects of copper mediated stress on tomato |
| topic | PGPR Cu stress phytohormones amino acid super oxide dismutase phenols flavonoids tomato |
| url | http://dx.doi.org/10.1080/17429145.2017.1370142 |
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