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Co-culture of red swamp crayfish Procambarus clarkia influenced glycoside hydrolase families and fungal communities in the rice-paddy soils

文献类型： 外文期刊

作者： Fan, Limin 1 ; Li, Fajun 2 ; Chen, Xi 1 ; Shen, Lihong 4 ; Chu, Yuyao 3 ; Qiu, Liping 1 ; Hu, Gengdong 1 ; Song, Chao 1 ; Li, Dandan 1 ; Meng, Shunlong 1 ; Chen, Jiazhang 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Integrated Rice Fish Farming Ecol, Minist Agr & Rural Affairs, Wuxi 214081, Jiangsu, Peoples R China

2.Weifang Univ Sci & Technol, Shandong Peninsula Engn Res Ctr Comprehens Brine, Shouguang 262700, Peoples R China

3.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Jiangsu, Peoples R China

4.Shanghai Pudong New Area Fisheries Technol Extens, Shanghai 201200, Peoples R China

关键词： Metagenomics; Rice -crayfish culture; Chitinase; Glycoside hydrolase; Fungi

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：4.8； 五年影响因子：5.1 ）

ISSN： 0929-1393

年卷期： 2023 年 186 卷

页码：

收录情况： SCI

摘要： Integrated rice-crayfish farming has expanded rapidly, and an in-depth understanding of this model is urgently required. In the present study, metagenomics and real-time polymerase chain reaction were carried out to determine whether and how the introduction of the red swamp crayfish Procambarus clarkia affected glycoside hydrolase (GH) families and the abundance and community composition of fungi in soils. Investigations comprised the ecosystems of rice-crayfish co-culture fields, crayfish culture ponds, and rice paddy fields. Further, we sought to investigate the influence of the fungal community on bacterial chitinase gene abundance. The results showed that although rice cultivation induced variations in GH families and fungal communities in rice paddy soils, the introduction of crayfish was the main factor responsible for these variations. Additionally, the proliferation of bacteria with chitinase genes was not induced by the crayfish exoskeleton (in the form of living animals) but by the abundance of fungi in the soils. Therefore, bacterial chitinase in soils may not affect the exoskeleton of living crayfish but is likely the main regulator of the abundance of soil fungi. The impact of crayfish on fungal diversity was likely due to direct biological effects, while its inhibitory effect on fungal abundance was mainly attributed to the low nitrogen content in soils.

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