<i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils
In this study, <i>Bacillus amyloliquefaciens</i> SQ-2, previously isolated from a commercial watercress paste, was investigated for its potential in promoting rice growth in Pb/Al-contaminated acidic soil, especially when used in conjunction with corn straw biochar. Firstly, the physiolo...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-07-01
|
| Series: | Microorganisms |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-2607/13/7/1556 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839615501470269440 |
|---|---|
| author | Guohui Gao Xue Li Jiajun Ma Yumeng Cui Ming Ying Lei Huang Meitong Li |
| author_facet | Guohui Gao Xue Li Jiajun Ma Yumeng Cui Ming Ying Lei Huang Meitong Li |
| author_sort | Guohui Gao |
| collection | DOAJ |
| description | In this study, <i>Bacillus amyloliquefaciens</i> SQ-2, previously isolated from a commercial watercress paste, was investigated for its potential in promoting rice growth in Pb/Al-contaminated acidic soil, especially when used in conjunction with corn straw biochar. Firstly, the physiological properties of rice were enhanced, with the activities of catalase and superoxide dismutase increasing by 162.5% and 162.9%, respectively. Additionally, the total phenolic and chlorophyll contents of rice increased by 17.6% and 83.7%, respectively. Secondly, the nutrient content of the rice rhizosphere soil was improved. In particular, nitrate nitrogen, available potassium, and sucrase were enhanced by 9.4%, 45.9%, and 466.8%, respectively. Moreover, SQ-2–biochar was demonstrated to have a notable capacity for removing Pb<sup>2+</sup> and Al<sup>3+</sup>. The mineralization of Pb<sup>2+</sup> and Al<sup>3+</sup> was achieved through the use of SQ-2–biochar, as revealed by SEM-EDS, XRD, XPS, and FT-IR analyses, with the main precipitates being Pb<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> and AlPO<sub>4</sub>. Functional groups such as C-O-C, C=O, N-H, P-O, and -O-H on the microbial surface were found to be involved in the biosorption process of Pb<sup>2+</sup> and Al<sup>3+</sup>. In summary, SQ-2–biochar can effectively mineralize Pb<sup>2+</sup> and Al<sup>3+</sup>, enhance the physiological properties of rice, and improve soil nutrients, thereby augmenting the antioxidant capacity, photosynthesis, and stress resistance of rice and ultimately promoting rice growth. |
| format | Article |
| id | doaj-art-0b59a00a40e647989b0d1f45eeadd48e |
| institution | Matheson Library |
| issn | 2076-2607 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj-art-0b59a00a40e647989b0d1f45eeadd48e2025-07-25T13:31:05ZengMDPI AGMicroorganisms2076-26072025-07-01137155610.3390/microorganisms13071556<i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic SoilsGuohui Gao0Xue Li1Jiajun Ma2Yumeng Cui3Ming Ying4Lei Huang5Meitong Li6Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, ChinaIn this study, <i>Bacillus amyloliquefaciens</i> SQ-2, previously isolated from a commercial watercress paste, was investigated for its potential in promoting rice growth in Pb/Al-contaminated acidic soil, especially when used in conjunction with corn straw biochar. Firstly, the physiological properties of rice were enhanced, with the activities of catalase and superoxide dismutase increasing by 162.5% and 162.9%, respectively. Additionally, the total phenolic and chlorophyll contents of rice increased by 17.6% and 83.7%, respectively. Secondly, the nutrient content of the rice rhizosphere soil was improved. In particular, nitrate nitrogen, available potassium, and sucrase were enhanced by 9.4%, 45.9%, and 466.8%, respectively. Moreover, SQ-2–biochar was demonstrated to have a notable capacity for removing Pb<sup>2+</sup> and Al<sup>3+</sup>. The mineralization of Pb<sup>2+</sup> and Al<sup>3+</sup> was achieved through the use of SQ-2–biochar, as revealed by SEM-EDS, XRD, XPS, and FT-IR analyses, with the main precipitates being Pb<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> and AlPO<sub>4</sub>. Functional groups such as C-O-C, C=O, N-H, P-O, and -O-H on the microbial surface were found to be involved in the biosorption process of Pb<sup>2+</sup> and Al<sup>3+</sup>. In summary, SQ-2–biochar can effectively mineralize Pb<sup>2+</sup> and Al<sup>3+</sup>, enhance the physiological properties of rice, and improve soil nutrients, thereby augmenting the antioxidant capacity, photosynthesis, and stress resistance of rice and ultimately promoting rice growth.https://www.mdpi.com/2076-2607/13/7/1556<i>Bacillus amyloliquefaciens</i>biocharmetalPGPR |
| spellingShingle | Guohui Gao Xue Li Jiajun Ma Yumeng Cui Ming Ying Lei Huang Meitong Li <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils Microorganisms <i>Bacillus amyloliquefaciens</i> biochar metal PGPR |
| title | <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils |
| title_full | <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils |
| title_fullStr | <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils |
| title_full_unstemmed | <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils |
| title_short | <i>Bacillus amyloliquefaciens</i> SQ-2 and Biochar: A Promising Combination for Enhancing Rice Growth in Pb/Al-Contaminated Acidic Soils |
| title_sort | i bacillus amyloliquefaciens i sq 2 and biochar a promising combination for enhancing rice growth in pb al contaminated acidic soils |
| topic | <i>Bacillus amyloliquefaciens</i> biochar metal PGPR |
| url | https://www.mdpi.com/2076-2607/13/7/1556 |
| work_keys_str_mv | AT guohuigao ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT xueli ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT jiajunma ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT yumengcui ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT mingying ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT leihuang ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils AT meitongli ibacillusamyloliquefaciensisq2andbiocharapromisingcombinationforenhancingricegrowthinpbalcontaminatedacidicsoils |