Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1007/s11104-026-08342-9 |
| Document | Shareable Link |
| Title (Primary) | Effects of plant growth promoting rhizobacteria on acid soil Se bioavailability and Se biofortification in pak choi (Brassica rapa ssp. chinensis) |
| Author | Yuan, Y.; Wang, Z.; Yang, Z.; Sun, Z.; Jiang, D.; Wu, P.; Zheng, S. |
| Source Titel | Plant and Soil |
| Year | 2026 |
| Department | TECH |
| Volume | 520 |
| Page From | 1589 |
| Page To | 1604 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Supplements | Supplement 1 |
| Keywords | Se-rich acid soil; Plant growth promoting rhizobacteria (PGPRs); Se speciation transformation; Se biofortification |
| Abstract | Aims Plant growth promoting rhizobacteria (PGPRs) are potential candidates for Se biofortification. However, in Se-rich acid soils, the mechanism underlying biofortification, whether it is mainly through the facilitation of bioavailable Se or the development of root system, remains elusive. Methods Lelliottia sp. KY49 and Enterobacter sp. EG16, varying in their siderophore and IAA production capacities, were inoculated in pak choi (Brassica rapa ssp. chinensis) cultivated in Se-rich yellow soil. Three inoculation methods were performed: root dipping, injection inoculation, and root-irrigating. Results Plant growth was significant promoted. Specifically, the yield of pak choi increased by 104% (EG16) and 130% (KY49), respectively. Additionally, fine root development, chlorophyll synthesis and POD and SOD activities were also enhanced. There was a positive correlation between plant growth and the IAA producing capacity of PGPRs, and the root-irrigating is more beneficial to plant growth. When EG16 was used, the Se concentration in the aboveground of plant and root increased by 64.9% and 70.0%, respectively. In contrast, there was no significant increase in plant Se concentration when KY49 was applied. Furthermore, the increment of plant-Se concentration (Delta-plant-Se) was positively correlated with both the increment of soil organic matter (Delta-SOM) and the increment of bioavailable Se (Delta-bio-Se). The Delta-bio-Se was probably due to the transformation of organic matter-bound Se (OM-Se) and residual Se (RES-Se) into the soluble Se forms, driven by siderophore production of PGPRs. Conclusions In the Se-rich soils, PGPRs boost soil Se bioavailability by siderophore production and augmentation of SOM, thereby facilitating plant Se bioaccumulation. |
| Yuan, Y., Wang, Z., Yang, Z., Sun, Z., Jiang, D., Wu, P., Zheng, S. (2026): Effects of plant growth promoting rhizobacteria on acid soil Se bioavailability and Se biofortification in pak choi (Brassica rapa ssp. chinensis) Plant Soil 520 , 1589 - 1604 10.1007/s11104-026-08342-9 |
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