|
| Effects of tricyclazole and quinclorac acid on bacteria in paddy field soil |
| Received:December 01, 2022 |
| View Full Text View/Add Comment Download reader |
| KeyWord:community diversity;community structure;paddy soil;tricyclazole;quinclorac acid |
| Author Name | Affiliation | E-mail | | ZHANG Bing | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | | | WANG Jiucheng | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | | | WANG Dongzhi | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | | | FENG Jiancheng | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | | | HOU Wenfeng | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | | | ZHOU Xue | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | zhouxue_jlau@163.com | | GAO Qiang | College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China | |
|
| Hits: 709 |
| Download times: 653 |
| Abstract: |
| To investigate the effects of tricyclazole and quinclorac acid application on soil bacterial diversity and community structure in rice fields, a field trial was set up in Yongji County, Jilin City, Jilin Province in 2021. High-throughput sequencing technology was used to investigate the effects of the recommended application rate（low dose）and two times the recommended application rate（high dose）on the soil bacterial community in rice fields. Both high and low dose applications of tricyclazole and quinclorac acid had no significant effect on bacterial α diversity（P>0.05）, but they had a significant effect on bacterial community structure（P<0.05）, and the effect of high dose application was greater than that of low dose application. The phylum annotation results showed that the most abundant phylum was Proteobacteria, with the highest abundance ratio of 33.54%, followed by Chloroflexi（20.75%）and Acidobacteria（13.81%）. The top five phyla were completed by bacteroidetes, which accounted for 9.86% and Actinobacteria, which accounted for 8.48%. The effect of high dose application on the relative abundance of bacteroidetes was greater than that of low dose application. Analyzing abundant and rare taxa showed that applying different doses of tricyclazole and quinclorac acid caused a decrease in rare taxa and an increase in conditionally rare taxa, without affecting the remaining taxa. The structure of the specialized species analysis showed that the different treatments affected the abundance of the phylum distributed by the shared specialized species. The general pattern was that the high dose application had a greater effect than the low dose application, and triconazole application produced more specialized species and their distributed endemic phyla than quinclorac acid application. There were a maximum of six in the high-dose triconazole treatment and one each in the low-dose triconazole treatment and the low-dose quinclorac acid treatment. In summary, although triconazole and quinclorac acid application did not cause significant changes in soil bacteria diversity in rice fields, it significantly affected community structure and species composition. The effect of high-dose application was greater than that of low-dose application, indicating that triconazole and quinclorac acid application in practice should follow the recommended low dose to meet the needs of production and the impact of pesticides on the soil environment and ecological safety. |
|
|
|
