Cover trees associations shape bacterial diversity in coffee production systems

Area of Science:

• Agricultural Science
• Soil Microbiology
• Ecology

Background:

• Coffee agroforestry systems utilize shade trees crucial for soil fertility and biodiversity.
• Monoculture systems degrade soil chemistry and microbial diversity over time.
• The impact of cover trees on coffee-associated microbial communities remains understudied.

Purpose of the Study:

• To identify bacteria in coffee roots and soil across three management systems.
• To assess the influence of coffee-shade tree associations on the bacterial ecosystem.
• To correlate bacterial communities with soil and plant parameters.

Main Methods:

• Partial 16S rRNA sequencing was employed to identify bacterial communities.
• Three distinct coffee management systems were analyzed.
• Soil and plant parameters were measured and correlated with bacterial findings.

Main Results:

• Agroforestry systems significantly increased bacterial alpha diversity.
• Dominant genera (Kribbella, Nonomuraea, Nitrospira, Sphingobium, Neobacillus) correlated with nitrogen, organic matter, and phosphorus.
• Bacterial community structure differed between monoculture and shade-associated systems.

Conclusions:

• Shade tree associations in coffee production foster more diverse bacterial communities.
• Tree cover strategies positively influence the soil bacterial microbiome.
• Traditional coffee agroforestry practices contribute to healthier soils and sustainable production.