Interactive effects of rhizospheric soil microbes and litter on the growth of the invasive hyperaccumulator Bidens pilosa in cadmium-contaminated soil

Both rhizospheric soil microbes and shoot litter input can have profound effects on plant performance; however, their interactive effects on plants in Cd-contaminated soils remain poorly understood. We grew an invasive hyperaccumulator, Bidens pilosa, in sterilized and unsterilized rhizosphere soil without litter or with a low (0.2%, dry weight ratio) or a high amount (1%) of litter from B. pilosa in soil with low (5 mg kg-1) or high (10 mg kg-1) concentrations of Cd. The total, shoot, and root biomass of B. pilosa increased significantly with litter addition, by an average of 27%, 28% and 20%, respectively. The biomass of B. pilosa was significantly lower in unsterilized rhizosphere soil than in sterilized rhizosphere soil, decreasing by 19% for total, 18% for shoot and 24% for root, respectively. Furthermore, the effects of different litter amounts (0.2% vs. 1%) on biomass did not vary in sterilized rhizosphere soils, but significantly varied in unsterilized rhizosphere soils, showing..., , , # Interactive effects of rhizospheric soil microbes and litter on the growth of the invasive hyperaccumulator Bidens pilosa in cadmium-contaminated soil

[https://doi.org/10.5061/dryad.qbzkh18tb](https://doi.org/10.5061/dryad.qbzkh18tb)

## Description of the data and file structure

### Files and variables

#### File: XWang\_data.csv

**Description:** 

##### Variables

* Litter: the application of litter (0, 0.2 and 1%)
* Rhizosphere soil: rhizosphere soil (unsterilized and sterilized)
* Cd: (5 mg/kg and 10 mg/kg)
* Shoot_mass: the shoot mass of Bidens pilosa (g)
* Root_mass: the root mass of Bidens pilosa (g)
* Total_mass: the total mass of Bidens pilosa (g)
* Soil_N: total soil N (%)
* Soil_Cd: total soil Cd (mg/kg)
* Shoot_Cd: the Cd concentration in shoots of Bidens pilosa (mg/kg)
* Root_Cd: the Cd concentration in roots of Bidens pilosa (mg/kg)
* Ascomycota: the relative abundance of phylum Ascomycota (%)
* Basidiomycota: the relative abundance of phylum Basidiomycota (%)

根际土壤微生物与地上凋落物输入均能对植物生长表现产生深远影响；然而，二者在镉（Cd）污染土壤中对植物的交互作用仍知之甚少。

我们将入侵型超积累植物鬼针草（Bidens pilosa）种植于灭菌或未灭菌的根际土壤中，土壤条件包括无凋落物、添加低量（0.2%，干重比）鬼针草凋落物、添加高量（1%）鬼针草凋落物，且土壤镉浓度分为低（5mg/kg）和高（10mg/kg）两种水平。

添加凋落物后，鬼针草的总生物量、地上生物量和地下生物量均显著增加，平均增幅分别为27%、28%和20%。

未灭菌根际土壤中鬼针草的生物量显著低于灭菌根际土壤，总生物量、地上生物量和地下生物量分别降低了19%、18%和24%。

此外，不同凋落物添加量（0.2% vs. 1%）对生物量的影响在灭菌根际土壤中无显著差异，但在未灭菌根际土壤中差异显著，表现出... , , ,

# 根际土壤微生物与凋落物对镉污染土壤中入侵型超积累植物鬼针草生长的交互作用

[https://doi.org/10.5061/dryad.qbzkh18tb]

## 数据与文件结构描述

### 文件与变量

#### 文件：XWang_data.csv

**描述：**

##### 变量

* 凋落物添加处理（Litter）：凋落物添加情况（无凋落物、低量（0.2%干重比）、高量（1%））
* 根际土壤处理（Rhizosphere soil）：根际土壤状态（灭菌、未灭菌）
* 镉浓度（Cd）：土壤镉浓度水平（5mg/kg、10mg/kg）
* 地上生物量（Shoot_mass）：鬼针草地上部分生物量（g）
* 地下生物量（Root_mass）：鬼针草地下部分生物量（g）
* 总生物量（Total_mass）：鬼针草总生物量（g）
* 土壤总氮（Soil_N）：土壤总氮含量（%）
* 土壤总镉（Soil_Cd）：土壤总镉含量（mg/kg）
* 地上镉浓度（Shoot_Cd）：鬼针草地上部分镉浓度（mg/kg）
* 地下镉浓度（Root_Cd）：鬼针草地下部分镉浓度（mg/kg）
* 子囊菌门相对丰度（Ascomycota）：子囊菌门（Ascomycota）的相对丰度（%）
* 担子菌门相对丰度（Basidiomycota）：担子菌门（Basidiomycota）的相对丰度（%）