<i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L.
Selenium (Se) is essential for the basic functions of life, but the low daily intake of Se urges us to find reliable ways to increase food Se content. Plant-growth-promoting bacteria (PGPB) have shown potential in enhancing plant growth and Se accumulation. In this study, the soils collected from a...
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MDPI AG
2022-05-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/6/1301 |
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| author | Xiao-Rui Lin Han-Bing Chen Yi-Xi Li Zhi-Hua Zhou Jia-Bing Li Yao-Qiang Wang Hong Zhang Yong Zhang Yong-He Han Shan-Shan Wang |
| author_facet | Xiao-Rui Lin Han-Bing Chen Yi-Xi Li Zhi-Hua Zhou Jia-Bing Li Yao-Qiang Wang Hong Zhang Yong Zhang Yong-He Han Shan-Shan Wang |
| author_sort | Xiao-Rui Lin |
| collection | DOAJ |
| description | Selenium (Se) is essential for the basic functions of life, but the low daily intake of Se urges us to find reliable ways to increase food Se content. Plant-growth-promoting bacteria (PGPB) have shown potential in enhancing plant growth and Se accumulation. In this study, the soils collected from a Se tailing were used to isolate Se-tolerant PGPB. The results showed that a total of three strains were identified. Strain LWS1, belonging to <i>Priestia</i> sp., grew well in M9 medium and exhibited typical PGP characteristics by an IAA-production ability of 24.3 ± 1.37 mg·L<sup>−1</sup>, siderophore-production ability of 0.23 ± 0.04 and phosphate-solubilizing ability of 87.5 ± 0.21 mg·L<sup>−1</sup>. Moreover, LWS1 strain tolerated selenite (SeIV) up to 90 mM by a LC<sub>50</sub> of 270.4 mg·L<sup>–1</sup>. Further investigations demonstrated that the inoculation of strain LWS1 resulted in up to 19% higher biomass and 75% higher Se concentration in rice (<i>Oryza sativa</i> L.) than uninoculated treatments. Our study has provided evidence that microbial Se biofortification through inoculating with <i>Priestia</i> sp. strain LWS1 is an alternative way to improve Se uptake in crops and maintain human health. |
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| spelling | doaj.art-6eda457a5f074a3c85a3092ec3a96e962023-11-23T15:09:28ZengMDPI AGAgronomy2073-43952022-05-01126130110.3390/agronomy12061301<i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L.Xiao-Rui Lin0Han-Bing Chen1Yi-Xi Li2Zhi-Hua Zhou3Jia-Bing Li4Yao-Qiang Wang5Hong Zhang6Yong Zhang7Yong-He Han8Shan-Shan Wang9College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Life Science, Fujian Normal University, Fuzhou 350117, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Life Science, Fujian Normal University, Fuzhou 350117, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, ChinaSelenium (Se) is essential for the basic functions of life, but the low daily intake of Se urges us to find reliable ways to increase food Se content. Plant-growth-promoting bacteria (PGPB) have shown potential in enhancing plant growth and Se accumulation. In this study, the soils collected from a Se tailing were used to isolate Se-tolerant PGPB. The results showed that a total of three strains were identified. Strain LWS1, belonging to <i>Priestia</i> sp., grew well in M9 medium and exhibited typical PGP characteristics by an IAA-production ability of 24.3 ± 1.37 mg·L<sup>−1</sup>, siderophore-production ability of 0.23 ± 0.04 and phosphate-solubilizing ability of 87.5 ± 0.21 mg·L<sup>−1</sup>. Moreover, LWS1 strain tolerated selenite (SeIV) up to 90 mM by a LC<sub>50</sub> of 270.4 mg·L<sup>–1</sup>. Further investigations demonstrated that the inoculation of strain LWS1 resulted in up to 19% higher biomass and 75% higher Se concentration in rice (<i>Oryza sativa</i> L.) than uninoculated treatments. Our study has provided evidence that microbial Se biofortification through inoculating with <i>Priestia</i> sp. strain LWS1 is an alternative way to improve Se uptake in crops and maintain human health.https://www.mdpi.com/2073-4395/12/6/1301plant-growth-promoting bacteriaselenium<i>Oryza sativa</i><i>Priestia</i> sp. LWS1microbial biofortification |
| spellingShingle | Xiao-Rui Lin Han-Bing Chen Yi-Xi Li Zhi-Hua Zhou Jia-Bing Li Yao-Qiang Wang Hong Zhang Yong Zhang Yong-He Han Shan-Shan Wang <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. Agronomy plant-growth-promoting bacteria selenium <i>Oryza sativa</i> <i>Priestia</i> sp. LWS1 microbial biofortification |
| title | <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. |
| title_full | <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. |
| title_fullStr | <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. |
| title_full_unstemmed | <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. |
| title_short | <i>Priestia</i> sp. LWS1 Is a Selenium-Resistant Plant Growth-Promoting Bacterium That Can Enhance Plant Growth and Selenium Accumulation in <i>Oryza sativa</i> L. |
| title_sort | i priestia i sp lws1 is a selenium resistant plant growth promoting bacterium that can enhance plant growth and selenium accumulation in i oryza sativa i l |
| topic | plant-growth-promoting bacteria selenium <i>Oryza sativa</i> <i>Priestia</i> sp. LWS1 microbial biofortification |
| url | https://www.mdpi.com/2073-4395/12/6/1301 |
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