Fractions of soil phosphorus mediated by rhizospheric phoD-harboring bacteria of deep-rooted desert species are determined by fine-root traits

Soil phosphorus (P) availability is a crucial factor determining primary productivity in terrestrial ecosystems. Plant functional traits and microbes under P-deficient conditions can respond positively to increase soil P bioavailability. Whether and/or how the fine-root traits (FRTs) of deep-rooted desert species affect the rhizosphere and bulk-soil community of phoD-harboring bacteria and thus improve the availability of soil P, however, remains unclear. We conducted a three-year artificial outdoor pot experiment of P supply using Alhagi sparsifolia Shap. (hereafter Alhagi) to address this gap. Fine-root samples from one- and three-year-old Alhagi seedlings and samples of the rhizospheres and bulk soil were collected. High-throughput sequencing, sequential extraction, and root system scanning were used to determine soil phoD-harboring bacteria community, Hedley-P fractions, and the FRTs. Fine-root surface area (RSA), specific root length, foliar Mn concentration (indicating the quantit..., , , # Fractions of soil phosphorus mediated by rhizospheric phoD-harboring bacteria of deep-rooted desert species are determined by fine-root traits

[https://doi.org/10.5061/dryad.1g1jwsv5m](https://doi.org/10.5061/dryad.1g1jwsv5m)

## Description of the data and file structure

This experiment was conducted at the Cele Nation Station of Observation and Research for Desert-Grassland Ecosystems, situated in the ecotone between the Qira Oasis and the Taklamakan Desert in Xinjiang Province, China.

PhoD data were derived from rhizosphere and bulk soil samples collected from a pot experiment with one year and three years of phosphorus treatment.

### Files and variables

###### phoD.zip

Contains 128 fastq (fq) files.

Naming conventions:

* One-year: ZTPSN21HD180-A
* Three-year: ZTPSN21HD180-B

- P treatment
- CK: No P supply
- T1: 1 g P m–2 year–1
- T2: 3 g P m–2 year–1
- T3: 5 g P m–2 year–1

Fastq files:

ZTPSN21HD180-A_CK_R_R.fq

ZTPSN21HD180-A_T1_R_R.fq

ZTPSN21HD180-A_T2_R_R.fq

ZTPSN2...