Impact of soil heat on reassembly of bacterial communities in the rhizosphere microbiome and plant disease suppression

TY - JOUR

T1 - Impact of soil heat on reassembly of bacterial communities in the rhizosphere microbiome and plant disease suppression

AU - van der Voort, M.

AU - Kempenaar, M.

AU - van Driel, M.

AU - Raaijmakers, J.M.

AU - Mendes, R.

N1 - 5993, ME; Data archiving: Property of and archived at WUR

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - international

U2 - 10.1111/ele.12567

DO - 10.1111/ele.12567

M3 - Article

SN - 1461-023X

VL - 19

SP - 375

EP - 382

JO - Ecology Letters

JF - Ecology Letters

IS - 4

ER -