Microbial inoculum improved soil aggregate formation and increased cucumber yield in a greenhouse under secondary salinization conditions
文献类型: 外文期刊
作者: Yuanyuan Peng;He Zhang;Guihua Li;Jianfeng Zhang
作者机构:
关键词: Bacillus;Extracellular polymeric substances;Inoculation;Saline soil;Soil aggregate;Trichoderma
期刊名称: Journal of Environmental Management
ISSN: 0301-4797
年卷期: 2025 年 376 卷
页码:
收录情况: SCIE(2025版) ; ; EI(2025版)
摘要: Greenhouse soil salinization caused by unreasonable fertilizer utilization and irrigation threatens vegetable growth and supply. Inoculation with salt-tolerant and plant growth-promoting microorganisms offers a sustainable solution. We screened eight Bacillus and two Trichoderma strains for salt tolerance using incubation method. Subsequent pot and column experiments were conducted to assess their impact on cucumber growth and soil aggregation. The two promising strains, Bacillus amyloliquefaciens 10225 and Trichoderma harzianum 32527, were selected for further validation in salinized greenhouse soil. Our findings revealed that both strains of B. amyloliquefaciens thrived in 5% NaCl solution and substantially promoted the growth of cucumber seedling growth. Compared with that in the control (non-inoculated treatment), large macroaggregate content increased by 65.12%, 52.60%, and 71.93% with B. amyloliquefaciens 19994, 10225, and T. harzianum 32527, respectively, and aggregate water mean weight diameter (WMWD) increased by 34.47%, 36.55%, and 43.68%. Extracellular polymeric substance (EPS) composition (protein, polysaccharide, and uranic acid contents) varied among strains, with protein and polysaccharide contents increasing with B. amyloliquefaciens 10270. The microbial biomass carbon (MBC) content also increased by 19.26% and 28.53% (p < 0.05) with B. amyloliquefaciens 10225 and 10270, respectively, compared with non-inoculated control. The cucumber yield increased by 14.73%–17.43% under inoculation (p < 0.05). Partial least squares path modeling (PLS–PM) revealed that EPS and MBC promoted soil aggregation under inoculation. Field experiments confirmed that inoculation significantly improved cucumber yield, which was attributed to an increase in soil aggregate stability and a decrease in soil electrical conductivity (EC). The study underscores the critical role of EPS and MBC in maintaining soil aggregation in saline soils post-inoculation with beneficial strains. These findings offer theoretical or practical insights for the use of microbial inoculation as a bio-organic fertilizer or bio-amendment in saline soils.
分类号:
- 相关文献
作者其他论文 更多>>
-
Water involved in transformation of soil organo-mineral fractions during catalytic thermal desorption of dioxins-like polychlorinated biphenyls
作者:Juan Zhang;Xiaojun Liu;Jinhao Gao;Wei Guo;Jianfeng Zhang;Wentao Jiao
关键词:Clay mineral catalysts;Hydride ion conductivity;Polychlorinated biphenyls;Selective transformation pathways;Thermal catalytic reduction
-
Novel insights into the effect of arbuscular mycorrhizal fungi inoculation in soils under long-term biosolids application: Emphasis on antibiotic and metal resistance genes, and mobile genetic elements
作者:Tao Sun;Pierre Delaplace;Guihua Li;Anina James;Junting Pan;Jianfeng Zhang
关键词:Heavy metals;IS91 gene;Keystone taxa;Metagenome;Soil microbial community
-
A high-quality assembly revealing the PMEL gene for the unique plumage phenotype in Liancheng ducks
作者:Zhen Wang;Zhanbao Guo;Hongfei Liu;Tong Liu;Dapeng Liu;Simeng Yu;Hehe Tang;He Zhang;Qiming Mou;Bo Zhang;Junting Cao;Martine Schroyen;Shuisheng Hou;Zhengkui Zhou
关键词:duck;genome assembly;melanin;plumage color;PMEL
-
Enhancing soil organic carbon sequestration at different depths: The role of chitin-rich organic amendment in salt-affected soils
作者:He Zhang;Yuanyuan Peng;Caroline De Clerck;Guihua Li;Jianfeng Zhang;Aurore Degré
关键词:Aggregate distribution and stability;Greenhouse vegetable production;Organic amendment;Salt ions;Secondary saline soil;Soil organic carbon
-
Steroidal compounds in Paris polyphylla:structure, biological activities, and biosynthesis
作者:Xin Hua;Chengxi Kou;Fengge Wang;Jianfeng Zhang;Jifeng Yuan;Zheyong Xue
关键词:Biological activities;Biosynthesis;Paris polyphylla;Secondary metabolism;Steroids
-
Establishment of a pseudovirus neutralization assay for TGEV
作者:Haojie Wang;Jianxing Chen;Lihong Xue;Yue Sun;Tongqing An;Yue Wang;Hongyan Chen;Changqing Yu;Changyou Xia;He Zhang
关键词:neutralizing antibody;pseudovirus;pseudovirus neutralization test;ST cells;TGEV
-
The quadruplex TaqMan MGB fluorescent quantitative PCR method for simultaneous detection of feline panleukopenia virus, feline herpesvirus 1, feline calicivirus and feline infectious peritonitis virus
作者:Haojie Wang;Lihong Xue;Longxi Wang;Yixuan Liu;Jianxing Chen;Yue Sun;Tongqing An;Hongyan Chen;Changqing Yu;Changyou Xia;He Zhang
关键词:FCV;FHV-1;FIPV;FPV;quadruplex;TaqMan MGB fluorescent