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首页> 外文期刊>Plant and Soil >Long-term nitrogen fertilization indirectly affects soil fungi community structure by changing soil and pruned litter in a subtropical tea (Camellia sinensis L.) plantation in China
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Long-term nitrogen fertilization indirectly affects soil fungi community structure by changing soil and pruned litter in a subtropical tea (Camellia sinensis L.) plantation in China

机译：长期氮肥间接影响土壤真菌群落结构通过在亚热带茶叶（Camellia Sinensis L.）种植园中的土壤和修剪垃圾

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摘要

Background and aims The tea plant is a perennial leaf-harvest crop with high nitrogen (N) demand and a requirement for periodic pruning. While the effect of N fertilization on soil fungal communities has been studied extensively, little is known about the effects of returning the pruned litter to plots on the soil fungal community. Moreover, we do not understand how N fertilization might affect fungal communities by mediating changes in the soil and the properties of pruned tea litter. Methods Surface soil (0-20 cm in depth) samples were taken from a long-term tea plantation field experiment featuring four N treatments (0, 119, 285, and 569 kg N ha(-1) y(-1)). We investigated the soil fungal community by high-throughput sequencing and partial least square path modeling (PLS-PM) to clarify how N fertilization affects soil fungal community composition. Results N fertilization significantly increased inorganic N levels but significantly decreased soil pH, the total amount (TP_A) and concentration (TP) of total polyphenols, and the ratio of litter total polyphenols to total nitrogen (TP/TN) in pruned litters. Ascomycota, Basidiomycota, and Zygomycota represented similar to 69% of the fungi in tea soils. Higher rates of N fertilization reduced fungal community diversity (Chao1 index: r=0.67, p<0.01) and significantly changed the fungal composition (PERMANOVA: R-2=0.33, p=0.003). PLS-PM results showed that changes in soil pH and NO3- and the TP/TN of pruned litter were the most important factors exerting a direct impact on the composition of soil fungal communities after N fertilization. Conclusions Higher N fertilization reduced the diversity of soil fungi and shifted community composition. These changes were predominantly due to alterations in soil properties (pH and NO3-) and pruned litter quality (TP/TN). Our results also highlight the importance of the returning pruned materials with abundant TP to plots for soil microbial transformation in tea plantation ecosystems.
机译：背景和旨在茶叶植物是一种多年生叶收获作物，具有高氮气（n）的需求和定期修剪的要求。虽然N施肥对土壤真菌社区的影响已经广泛研究，但对返回土壤真菌群落中修剪垃圾的影响几乎是众所周知的。此外，我们不明白通过介导土壤的变化和修剪茶凋落物的性能，N施肥如何影响真菌社区。方法采用表面土壤（深度0-20厘米）样品采用四个N个处理（0,119,285和569 kg N（-1）y（-1））的长期茶园田间实验。我们通过高通量测序和部分最小二乘路径建模（PLS-PM）调查了土壤真菌群落，以阐明N施肥如何影响土壤真菌群落组成。结果N施肥显着增加了无机N水平，但显着降低了总多酚的土壤pH，总量（TP_A）和浓度（TP），以及垃圾总多酚与修剪凋落物的总氮（TP / TN）的比例。 Ascomycota，碱霉菌和Zygomycota代表类似于茶土的69％的真菌。 N施肥率较高降低真菌群落多样性（Chao1指数：r = 0.67，P <0.01），显着改变了真菌组合物（vallova：R-2 = 0.33，p = 0.003）。 PLS-PM结果表明，土壤pH和NO3-和TP / TN的修剪垃圾的变化是施肥后对土壤真菌社区组成产生直接影响的最重要因素。结论较高的抗体降低了土壤真菌和移位群落组成的多样性。这些变化主要是由于土壤性质（pH和NO3-）和修剪的垃圾质量（TP / TN）的改变。我们的结果还突出了茶叶种植园生态系统土壤微生物转化的丰富TP的返回修剪材料的重要性。

著录项

  • 来源
    《Plant and Soil》 |2019年第2期|共18页
  • 作者

    Yang Xiangde; Ma Lifeng; Ji Lingfei; Shi Yuanzhi; Yi Xiaoyun; Yang Qinglin; Ni Kang; Ruan Jianyun;

  • 作者单位

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

    Chinese Acad Agr Sci Tea Res Inst Key Lab Tea Biol &

    Resource Utilizat Tea Minist Agr Hangzhou 310008 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    N fertilization; Tea plantation; Fungal community; Pruned litter; PLS-PM;

    机译：施肥;茶园;真菌群落;修剪垃圾;PLS-PM;

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