Straw biochar increases the abundance of inorganic phosphate solubilizing bacterial community for better rape (Brassica napus) growth and phosphate uptake
Zheng, Bang-Xiao (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Ding, Kai (Chinese Academy of Sciences. Institute of Urban Environment)
Yang, Xiao-Ru (Chinese Academy of Sciences. Institute of Urban Environment)
Wadaan, Mohammed A. M. (King Saud University. College of Science. Zoology Department)
Hozzein, Wael N. (King Saud University. College of Science. Zoology Department)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zhu, Yong-Guan (Chinese Academy of Sciences. Institute of Urban Environment)

Data:	2019
Resum:	The direct application of inorganic-phosphate-solubilizing bacteria (iPSBs) for improving the efficiency of phosphorus (P) use leads to a low rate of bacterial survival. Biochar is a good inoculum carrier for microbial survival, and diverse feedstocks can have different effects. We generated an iPSB community using seven selected iPSB strains with various phylogenic taxonomies and P-solubilizing abilities. Biochar was then inoculated with the iPSB community and applied to soil in pots seeded with rape (Brassica napus). Growth of the rape for four weeks and the effects of biochars produced from six raw feedstocks, rice straw, rice husks, soybean straw, peanut shells, corn cobs and wood, were compared. The synthetic iPSB community had a larger capacity to solubilize inorganic P and exude organic anions than any of the individual strains. The structure of the iPSB community was analyzed by high-throughput sequencing four weeks after inoculation. All seven iPSB strains were detected, dominated by Arthrobacter defluvii 06-OD12. The abundance of the iPSB community was significantly correlated with rape biomass, P content and P uptake (P < 0. 05). The biochar amendments conferred 6. 86-24. 24% survival of the iPSB community, with the straw biochars conferring the highest survival. The available-P content of the biochar rather than soil pH was the dominant factor for iPSB community structure, suggesting that the biochar material was critical for the survival and functioning of the iPSB community. Our study demonstrates the feasibility of biochar-assisted iPSB improvement of crop growth and P uptake.
Ajuts:	European Commission 610028
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Straw biochar ; Brassica napus ; Phosphorus ; Inorganic phosphate solubilizing bacteriaP ; Hosphate uptake
Publicat a:	Science of the total environment, Vol. 647 (Jan. 2019) , p. 1113-1120, ISSN 1879-1026

DOI: 10.1016/j.scitotenv.2018.07.454
PMID: 30180320

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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