Transgenerational soil-mediated differences between plants experienced or naïve to a grass invasion

Area of Science:

• Ecology
• Plant Biology
• Invasive Species Research

Background:

• Invasive species can drive rapid evolutionary changes in native flora.
• Native species in invaded areas may adapt faster than those in uninvaded regions.
• Soil microbial communities play a crucial role in plant-environment interactions.

Purpose of the Study:

• To investigate the response of native Achillea millefolium to soils from invaded and uninvaded areas.
• To determine if soil community changes mediate differential responses in native plants with varying invasion experience.
• To assess the impact of invasion history on native plant performance and adaptation.

Main Methods:

• Comparing germination time, biomass, and height of Achillea millefolium from experienced and naive populations.
• Exposing native plants to soils from both invaded (Holcus lanatus) and uninvaded sites.
• Analyzing plant responses to soil conditions based on their origin (invaded vs. uninvaded areas).

Main Results:

• Achillea millefolium from invaded (experienced) areas grew faster and taller than those from uninvaded (naive) areas.
• Naive native plants exhibited negative feedback with their home soil but positive feedback with invaded soil.
• Experienced plants showed reduced sensitivity to soil differences compared to naive plants.

Conclusions:

• Native plants naive to invasion may be more sensitive to soil microbial communities than experienced plants.
• Transgenerational differences exist between naive and experienced plant populations, potentially due to genetic or plastic changes.
• Seed source and population history are critical factors for successful ecological restoration, with experienced seed sources showing high restoration potential.