Drought legacy influences plant invasion through plant-soil feedback dependent on the origin and lifespan of conditioning species

Alien plant invasion is one of the key factors of global change. Soil legacies from previous plant species can affect the alien plants that are later introduced. Moreover, it is suggested that drought, as a common environmental factor, often influences plant-soil interactions. However, little is known about how drought and plant-soil feedback jointly affect the growth of subsequent alien and native plants of different lifespans.
We conducted a two-phase plant-soil feedback experiment. Firstly, we conditioned the soil using each of the 32 species (eight native annuals, eight native perennials, eight alien annuals and eight alien perennials) with or without drought treatment. Thereafter, each of 20 species were grown on their conspecific and heterospecific soils to test the various soil-legacy effects.
Plants grew better in soil with heterospecific legacies than with conspecific legacies. The alien and perennial plants exhibited superior growth compared to the native and annual plants. Al..., , , # Drought legacy influences plant invasion through plant-soil feedback dependent on the origin and lifespan of conditioning species

We have submitted our raw data (**biomass.csv**)，and R script (**Biomass_PSF.Rmd**).

\## Descriptions

\## Code Files

All simulations were run in R version 4.2.2.

\### **Biomass_PSF.Rmd** contains code for creating all figures.

\## Data

\### **biomass.csv**

\* *pot_ID_p1* : Conditioning-pot identity

\* *species* : Latin name of the test plant species

\* *family* : Family of the test plants

\* *origin* : Origin of the test plants (Alien or Native)

\* *lifespan* : Lifespan of the test plants (annual or perennial)

\* *drought* : Drought treatment of conditioning phase, i.e. the drought legacy (CK or Drought)

\* *PSF* : Soil-conditioning treatment, i.e. soil conditioned by conspecific (Home) or heterospecific (Foreign) species

\* *PSF_type* : Soil-conditioning treatment, including conspecific (Home) and heterospecific (so...