| 中国典型水稻土真菌群落多样性与功能特征及其影响因素 |
| 摘要点击 2301 全文点击 339 投稿时间：2023-10-08 修订日期：2024-01-04 |
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| 中文关键词 真菌 群落结构 多样性 FUNGuild功能预测 稻田土壤 |
| 英文关键词 fungi community structure diversity FUNGuild functional prediction paddy soil |
| DOI 10.13227/j.hjkx.20241045 |
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| 中文摘要 |
| 为了探究水稻土真菌群落多样性与功能及其影响因素,选取5个中国典型水稻土为研究对象,利用高通量测序技术对土壤真菌群落组成及多样性进行对比分析,并利用 FUNGuild 微生态工具进行功能预测,分析其环境影响因素. 结果表明：①从多样性指数来看黑龙江（HLJ）土壤样本真菌群落多样性显著低于其他4个地区（P<0.05）,云南（YN）稻田土壤的真菌群落丰富度最高,显著高于其他地区（P<0.05）,而海南（HN）、江西（JX）和山东（SD）土壤样本较为接近,5种典型稻田土壤真菌门水平平均相对丰度最高的是Ascomycota（子囊菌门）,平均相对丰度最高菌属是Tausonia；②真菌以腐生营养型所占比例最大,其相应环境功能较强；③土壤真菌的物种丰度与土壤TP、EC和BD呈极显著相关（P<0.01）,冗余分析亦发现,土壤TP是真菌群落以及腐生功能类群变化的主要驱动因子. 以上研究结果表明,不同样本之间稻田土壤真菌群落多样性和结构特征存在较大差异,土壤理化性质的改变通过影响真菌菌属的相对丰度,进而影响真菌的群落结构.研究结果可为基于真菌多样性和功能的稻田可持续管理提供理论参考. |
| 英文摘要 |
| To investigate the structure, diversity, and function of different paddy soil fungal communities and the factors affecting them in typical paddy cropping areas in China, five typical Chinese paddy soils were selected in this study, and the composition and diversity of soil fungal communities were comparatively analyzed using high-throughput sequencing technology and functionally predicted using the FUNGuild microecological tool. The results showed that： ① The fungal community diversity of soil samples from Heilongjiang （HLJ） was significantly lower than that of the other four regions （P<0.05）； the highest fungal community richness was found in paddy soils from Yunnan （YN）, which was significantly higher than that of the other regions （P<0.05）； and the soil samples from Hainan （HN）, Jiangxi （JX）, and Shandong （SD） were relatively close to each other. The highest average relative abundance at the level of the five typical paddy phyla was Ascomycota, and the genus with the highest average relative abundance was Tausonia. ② Fungi had the largest proportion of saprophytic trophic types, and their corresponding environmental functions were stronger. ③ The species abundance of soil fungi was highly significantly correlated with soil TP, EC, and BD （P<0.01）, and redundancy analyses also showed that soil TP was the main driver of the fungal community as well as the saprophytic functional taxa. The above results showed that the soil fungal community diversity and structure varied greatly among samples, and the relative abundance of fungal genera was affected by soil physical and chemical properties and altered the fungal community structure in paddy fields. The development of this study will provide theoretical references for the sustainable management based on fungal diversity and function of paddy fields. |
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