Nitrogen fixation and fertilization have similar effects on biomass allocation in nitrogen-fixing plants

Plants adjust their allocation to different organs based on nutrient supply. In some plant species, symbioses with nitrogen-fixing bacteria that live in root nodules provide an alternate pathway for nitrogen acquisition. Does access to nitrogen-fixing bacteria modify plants’ biomass allocation? We hypothesized that access to nitrogen-fixing bacteria would have the same effect on allocation to aboveground versus belowground tissues as access to plentiful soil nitrogen.
To test this hypothesis and related hypotheses about allocation to stems versus leaves and roots versus nodules, we conducted experiments with 15 species of nitrogen-fixing plants in two separate greenhouses. In each, we grew seedlings with and without access to symbiotic bacteria across a wide gradient of soil nitrogen supply.
As is common, uninoculated plants allocated relatively less biomass belowground when they had more soil nitrogen. As we hypothesized, nitrogen fixation had a similar effect as the highest level of f..., , , # Data from: Nitrogen fixation and fertilization have similar effects on biomass allocation in nitrogen-fixing plants

[https://doi.org/10.5061/dryad.cnp5hqc9s](https://doi.org/10.5061/dryad.cnp5hqc9s)

## Description of the data and file structure

Reference information:

Dataset title: Data for the article \"Nitrogen fixation and fertilization have similar effects on biomass allocation in nitrogen-fixing plants,\" accepted in 2024 by Ecology and Evolution.

Dataset contributors: Duncan N. L. Menge, Amelia A. Wolf, Jennifer L. Funk, Steven S. Perakis,

```
K. A. Carreras Pereira
```

Version number 1.0.0

Date: July 21, 2023

Dataset DOI: XXXDOIXXX

Suggested citations:

```
Dataset citation:

Menge DNL, Wolf AA, Funk JL, Perakis SS, Carreras Pereira KA. 2023. Data for the

article \"Nitrogen fixation and fertilization have similar effects on biomass allocation in nitrogen-fixing plants\", Dryad, Dataset, XXXDOIXXX

Corresponding publication:

Menge DNL, Wolf AA, Funk JL, Perakis SS, Car...

植物会根据养分供应状况调整向不同器官的生物量分配（biomass allocation）。部分植物物种与定殖于根瘤（root nodules）中的固氮细菌（nitrogen-fixing bacteria）形成共生关系，为氮素获取提供了一条替代途径。根瘤固氮细菌的存在是否会改变植物的生物量分配模式？我们提出假说：根瘤固氮细菌对植物地上与地下组织生物量分配的影响，与土壤中充足氮素供应的作用一致。

为验证该假说及关于茎与叶、根与根瘤之间分配模式的相关假说，我们在两个独立的温室中开展了针对15种固氮植物的实验。每组实验中，我们均设置了有/无共生细菌（symbiotic bacteria）定殖的幼苗处理，并设置了跨度广泛的土壤氮素供应梯度。

与常规观测结果一致，未接种细菌的植株在土壤氮素水平更高时，地下部分的生物量分配占比相对更低。正如我们所提出的假说，生物固氮（nitrogen fixation）的效应与最高水平的[原文截断]效果相近——
# 数据来源：《固氮作用与施肥对固氮植物生物量分配的相似影响》

[https://doi.org/10.5061/dryad.cnp5hqc9s]

## 数据与文件结构说明

### 参考文献信息

数据集标题：刊载于《生态学与进化》2024年的论文《固氮作用与施肥对固氮植物生物量分配的相似影响》配套数据

数据集贡献者：Duncan N. L. Menge、Amelia A. Wolf、Jennifer L. Funk、Steven S. Perakis、K. A. Carreras Pereira

版本号：1.0.0

发布日期：2023年7月21日

数据集DOI：XXXDOIXXX

推荐引用格式：

数据集引用：
Menge DNL, Wolf AA, Funk JL, Perakis SS, Carreras Pereira KA. 2023. 论文《固氮作用与施肥对固氮植物生物量分配的相似影响》配套数据. Dryad, 数据集, XXXDOIXXX

对应发表论文：
Menge DNL, Wolf AA, Funk JL, Perakis SS, Car...