Impact of soil heat on reassembly of bacterial communities in the rhizosphere microbiome and plant disease suppression.
Ecol Lett
; 19(4): 375-82, 2016 Apr.
Article
in En
| MEDLINE
| ID: mdl-26833547
ABSTRACT
The rhizosphere microbiome offers a range of ecosystem services to the plant, including nutrient acquisition and tolerance to (a)biotic stress. Here, analysing the data by Mendes et al. (2011), we show that short heat disturbances (50 or 80 °C, 1 h) of a soil suppressive to the root pathogenic fungus Rhizoctonia solani caused significant increase in alpha diversity of the rhizobacterial community and led to partial or complete loss of disease protection. A reassembly model is proposed where bacterial families that are heat tolerant and have high growth rates significantly increase in relative abundance after heat disturbance, while temperature-sensitive and slow-growing bacteria have a disadvantage. The results also pointed to a potential role of slow-growing, heat-tolerant bacterial families from Actinobacteria and Acidobacteria phyla in plant disease protection. In conclusion, short heat disturbance of soil results in rearrangement of rhizobacterial communities and this is correlated with changes in the ecosystem service disease suppression.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plants
/
Soil Microbiology
/
Bacterial Physiological Phenomena
/
Microbial Interactions
/
Rhizosphere
/
Microbiota
/
Hot Temperature
Language:
En
Journal:
Ecol Lett
Year:
2016
Document type:
Article
Affiliation country:
Netherlands