Full
Outline
This study investigated the effects of sugarcane bagasse biochar on the degradation of azoxystrobin and the structural composition of microbial communities in flooded paddy soils from South China using a microcosm system. Results demonstrated that biochar pyrolyzed at 300℃, 500℃, and 700℃ accelerated azoxystrobin degradation during the early incubation phase (10d), achieving degradation rates of 32.42%~34.87%, significantly higher than the 16.48% observed in the control (no biochar). However, it ultimately inhibited complete degradation by the late phase (50d), with final degradation rates of 88.78%~89.76% in biochar-amended soils versus 98.77% in the control, demonstrating an initial stimulation followed by suppression. The inhibitory effect intensified with increasing application rates of 700℃ biochar (BC700). Azoxystrobin acid, a key metabolite, was identified during this process. High-throughput 16S rRNA sequencing revealed that BC700 addition reduced total microbial species richness and Chao1index. Comparative analysis showed that 5% and 10% biochar treatments significantly decreased the relative abundance of Desulfobacterota while increasing Citrifermentans and Bacillus spp. compared to pristine soil and the 3% biochar treatment. Conversely, Clostridium_sensu_stricto_12 abundance declined.
63
19
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
