Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice
High concentrations of toxic heavy metals (THM) and low micronutrients in rice grains adversely affect human health. In this research, we investigated the potential of using biofilm biofertilizer (BFBF) in managing THM and micronutrients in rice by conducting field experiments that compar...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Academia.edu Journals
2025-02-01
|
| Series: | Academia Environmental Sciences and Sustainability |
| Online Access: | https://www.academia.edu/127586698/Biofilm_biofertilizer_modulates_heavy_metals_in_soil_plant_systems_to_produce_high_quality_rice |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849744871971094528 |
|---|---|
| author | Dilan Warnakulasooriya Sidath Ekanayake Mahesh Premarathna Gamini Seneviratne Zhenbo Xu |
| author_facet | Dilan Warnakulasooriya Sidath Ekanayake Mahesh Premarathna Gamini Seneviratne Zhenbo Xu |
| author_sort | Dilan Warnakulasooriya |
| collection | DOAJ |
| description |
High concentrations of toxic heavy metals (THM) and low micronutrients in rice grains adversely affect human health. In this research, we investigated the potential of using biofilm biofertilizer (BFBF) in managing THM and micronutrients in rice by conducting field experiments that compared BFBF practice with the practice of using chemical fertilizer (CF) alone in Sri Lanka. Bioaccumulation and translocation factors were evaluated to assess THM and micronutrient distribution in soil–plant systems. The human health risk was also estimated. The BFBF practice showed a significant reduction in estimated daily intakes in the range of ca. 0.08–0.99 µg kg−1 day−1 for THM such as As, Co, Cd, and Cr compared to the range of 0.16–1.40 µg kg−1 day−1 when using CF alone. Thus, there were significantly low values of hazard quotient (HQ) and hazard index (HI) in the BFBF practice over CF indicating lower health risk. In the CF practice, the translocation of As from panicle to rice seed was significantly increased, and As in rice seeds is reported to exceed the safe level in some cases in Sri Lanka. On the contrary, reduced translocation of As and increased translocation of Cr within the safe level to rice seeds were observed with the BFBF application. Interestingly, the HI had been kept below the threshold value of 1.0 by significantly reducing the HQ values of each THM, only in the BFBF practice. These results highlight the role of increased microbial diversity and abundance induced by the BFBF, in mitigating the health risks and enhancing the sustainability of the soil–plant system. |
| format | Article |
| id | doaj-art-de3a39d80da04f66b82b44ef6fbb8d59 |
| institution | DOAJ |
| issn | 2997-6006 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Academia.edu Journals |
| record_format | Article |
| series | Academia Environmental Sciences and Sustainability |
| spelling | doaj-art-de3a39d80da04f66b82b44ef6fbb8d592025-08-20T03:06:24ZengAcademia.edu JournalsAcademia Environmental Sciences and Sustainability2997-60062025-02-012110.20935/AcadEnvSci7532Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality riceDilan Warnakulasooriya0Sidath Ekanayake1Mahesh Premarathna2Gamini Seneviratne3Zhenbo Xu4Microbial Biotechnology Unit, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka.Microbial Biotechnology Unit, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka.Microbial Biotechnology Unit, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka.Microbial Biotechnology Unit, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka.School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China. High concentrations of toxic heavy metals (THM) and low micronutrients in rice grains adversely affect human health. In this research, we investigated the potential of using biofilm biofertilizer (BFBF) in managing THM and micronutrients in rice by conducting field experiments that compared BFBF practice with the practice of using chemical fertilizer (CF) alone in Sri Lanka. Bioaccumulation and translocation factors were evaluated to assess THM and micronutrient distribution in soil–plant systems. The human health risk was also estimated. The BFBF practice showed a significant reduction in estimated daily intakes in the range of ca. 0.08–0.99 µg kg−1 day−1 for THM such as As, Co, Cd, and Cr compared to the range of 0.16–1.40 µg kg−1 day−1 when using CF alone. Thus, there were significantly low values of hazard quotient (HQ) and hazard index (HI) in the BFBF practice over CF indicating lower health risk. In the CF practice, the translocation of As from panicle to rice seed was significantly increased, and As in rice seeds is reported to exceed the safe level in some cases in Sri Lanka. On the contrary, reduced translocation of As and increased translocation of Cr within the safe level to rice seeds were observed with the BFBF application. Interestingly, the HI had been kept below the threshold value of 1.0 by significantly reducing the HQ values of each THM, only in the BFBF practice. These results highlight the role of increased microbial diversity and abundance induced by the BFBF, in mitigating the health risks and enhancing the sustainability of the soil–plant system.https://www.academia.edu/127586698/Biofilm_biofertilizer_modulates_heavy_metals_in_soil_plant_systems_to_produce_high_quality_rice |
| spellingShingle | Dilan Warnakulasooriya Sidath Ekanayake Mahesh Premarathna Gamini Seneviratne Zhenbo Xu Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice Academia Environmental Sciences and Sustainability |
| title | Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice |
| title_full | Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice |
| title_fullStr | Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice |
| title_full_unstemmed | Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice |
| title_short | Biofilm biofertilizer modulates heavy metals in soil–plant systems to produce high-quality rice |
| title_sort | biofilm biofertilizer modulates heavy metals in soil plant systems to produce high quality rice |
| url | https://www.academia.edu/127586698/Biofilm_biofertilizer_modulates_heavy_metals_in_soil_plant_systems_to_produce_high_quality_rice |
| work_keys_str_mv | AT dilanwarnakulasooriya biofilmbiofertilizermodulatesheavymetalsinsoilplantsystemstoproducehighqualityrice AT sidathekanayake biofilmbiofertilizermodulatesheavymetalsinsoilplantsystemstoproducehighqualityrice AT maheshpremarathna biofilmbiofertilizermodulatesheavymetalsinsoilplantsystemstoproducehighqualityrice AT gaminiseneviratne biofilmbiofertilizermodulatesheavymetalsinsoilplantsystemstoproducehighqualityrice AT zhenboxu biofilmbiofertilizermodulatesheavymetalsinsoilplantsystemstoproducehighqualityrice |