Details
| Original language | English |
|---|---|
| Pages (from-to) | 375-389 |
| Number of pages | 15 |
| Journal | Plant and soil |
| Volume | 493 |
| Issue number | 1-2 |
| Early online date | 23 Aug 2023 |
| Publication status | Published - Dec 2023 |
Abstract
Background and aims: The stoichiometric ratio of carbon (C): phosphorus (P) acquisition is strongly correlated with soil available C:P ratio. However how the stoichiometric relationship between acquiring C and P through microbial metabolism affects bioavailable P is poorly understood in semi-arid agricultural ecosystems. Methods: Our objective was to investigate the underlying mechanisms of the P availability in typical P-limited steppe soil from Kazakhstan in response to mineral nutrient (Na2HPO4) with and without Dactylis glomerata L. leaves addition in a 38-day incubation experiment. Results: Four bioavailable P fractions content (CaCl2-P, Citrate-P, Enzyme-P, and HCl-P) were improved. Sole application of P fertilizer decreased the maximal velocity (Vmax) of P acquisition enzyme (phosphomonoesterase) but increased microbial C limitation, resulting in increasing the ratio of C to P acquisition but decreasing the ratio of available dissolved organic C: Olsen-P. In contrast, plant residues returning (the application of sole D. glomerata leaves and the combined application of D.glomerata and mineral P) increased Vmax of C (β-1, 4-glucosidase, β-D-cellobiosidase, β-1, 4-xylosidase) and P acquisition enzymes, however decreasing microbial C and P limitation through improving microbial metabolism. Furthermore, the spearman correlation and piecewiseSEM analysis suggested that microbial C limitation and EEAC:P had a negative effect on P availability, illustrating that the decreasing of microbial C limitation can improve soil bioavailable P. Conclusion: The decomposition of organic residues eliminated microbial P limitation and increased P availability by allocating C and P acquisition enzymes to balance the stoichiometric ratio of microbial C and P demand. Graphical Abstract: [Figure not available: see fulltext.].
Keywords
- Bioavailable P, C:P stoichiometric ratio, Kazakhstan, Microbial C and P limitation, Steppe soil
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
- Agricultural and Biological Sciences(all)
- Plant Science
Sustainable Development Goals
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Plant and soil, Vol. 493, No. 1-2, 12.2023, p. 375-389.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Microbial response on changing C:P stoichiometry in steppe soils of Northern Kazakhstan
AU - Liu, Yuhuai
AU - Shibistova, Olga
AU - Cai, Guan
AU - Sauheitl, Leopold
AU - Xiao, Mouliang
AU - Ge, Tida
AU - Guggenberger, Georg
N1 - Funding Information: We gratefully acknowledge the German Ministry of Education and Science (BMBF) for funding the study in the framework of the CLIENT II program within the project ReKKS (funding number 01LZ1704A). Yuhuai Liu is grateful for financial support by the Chinese National Study Abroad Fund. We thank Institute of Soil Science, Leibniz University Hannover for technical assistance.
PY - 2023/12
Y1 - 2023/12
N2 - Background and aims: The stoichiometric ratio of carbon (C): phosphorus (P) acquisition is strongly correlated with soil available C:P ratio. However how the stoichiometric relationship between acquiring C and P through microbial metabolism affects bioavailable P is poorly understood in semi-arid agricultural ecosystems. Methods: Our objective was to investigate the underlying mechanisms of the P availability in typical P-limited steppe soil from Kazakhstan in response to mineral nutrient (Na2HPO4) with and without Dactylis glomerata L. leaves addition in a 38-day incubation experiment. Results: Four bioavailable P fractions content (CaCl2-P, Citrate-P, Enzyme-P, and HCl-P) were improved. Sole application of P fertilizer decreased the maximal velocity (Vmax) of P acquisition enzyme (phosphomonoesterase) but increased microbial C limitation, resulting in increasing the ratio of C to P acquisition but decreasing the ratio of available dissolved organic C: Olsen-P. In contrast, plant residues returning (the application of sole D. glomerata leaves and the combined application of D.glomerata and mineral P) increased Vmax of C (β-1, 4-glucosidase, β-D-cellobiosidase, β-1, 4-xylosidase) and P acquisition enzymes, however decreasing microbial C and P limitation through improving microbial metabolism. Furthermore, the spearman correlation and piecewiseSEM analysis suggested that microbial C limitation and EEAC:P had a negative effect on P availability, illustrating that the decreasing of microbial C limitation can improve soil bioavailable P. Conclusion: The decomposition of organic residues eliminated microbial P limitation and increased P availability by allocating C and P acquisition enzymes to balance the stoichiometric ratio of microbial C and P demand. Graphical Abstract: [Figure not available: see fulltext.].
AB - Background and aims: The stoichiometric ratio of carbon (C): phosphorus (P) acquisition is strongly correlated with soil available C:P ratio. However how the stoichiometric relationship between acquiring C and P through microbial metabolism affects bioavailable P is poorly understood in semi-arid agricultural ecosystems. Methods: Our objective was to investigate the underlying mechanisms of the P availability in typical P-limited steppe soil from Kazakhstan in response to mineral nutrient (Na2HPO4) with and without Dactylis glomerata L. leaves addition in a 38-day incubation experiment. Results: Four bioavailable P fractions content (CaCl2-P, Citrate-P, Enzyme-P, and HCl-P) were improved. Sole application of P fertilizer decreased the maximal velocity (Vmax) of P acquisition enzyme (phosphomonoesterase) but increased microbial C limitation, resulting in increasing the ratio of C to P acquisition but decreasing the ratio of available dissolved organic C: Olsen-P. In contrast, plant residues returning (the application of sole D. glomerata leaves and the combined application of D.glomerata and mineral P) increased Vmax of C (β-1, 4-glucosidase, β-D-cellobiosidase, β-1, 4-xylosidase) and P acquisition enzymes, however decreasing microbial C and P limitation through improving microbial metabolism. Furthermore, the spearman correlation and piecewiseSEM analysis suggested that microbial C limitation and EEAC:P had a negative effect on P availability, illustrating that the decreasing of microbial C limitation can improve soil bioavailable P. Conclusion: The decomposition of organic residues eliminated microbial P limitation and increased P availability by allocating C and P acquisition enzymes to balance the stoichiometric ratio of microbial C and P demand. Graphical Abstract: [Figure not available: see fulltext.].
KW - Bioavailable P
KW - C:P stoichiometric ratio
KW - Kazakhstan
KW - Microbial C and P limitation
KW - Steppe soil
UR - http://www.scopus.com/inward/record.url?scp=85168586169&partnerID=8YFLogxK
U2 - 10.1007/s11104-023-06235-9
DO - 10.1007/s11104-023-06235-9
M3 - Article
AN - SCOPUS:85168586169
VL - 493
SP - 375
EP - 389
JO - Plant and soil
JF - Plant and soil
SN - 0032-079X
IS - 1-2
ER -