Abstract
AbstractAs extreme droughts become more frequent, dissecting the responses of root-associated microbiomes to drying-wetting events is essential to understand their influence on plant performance. Here, we show that rhizosphere and endosphere communities associated with drought-stressed rice plants display compartment-specific recovery trends. Rhizosphere microorganisms were mostly affected during the stress period, whereas endosphere microorganisms remained altered even after irrigation was resumed. The duration of drought stress determined the stability of these changes, with more prolonged droughts leading to decreased microbiome resilience. Drought stress was also linked to a permanent delay in the temporal development of root microbiomes, mainly driven by a disruption of late colonization dynamics. Furthermore, a root-growth-promoting Streptomyces became the most abundant community member in the endosphere during drought and early recovery. Collectively, these results reveal that severe drought results in enduring impacts on root-associated microbiomes that could potentially reshape the recovery response of rice plants.
Publisher
Cold Spring Harbor Laboratory
Reference83 articles.
1. Influence of extreme weather disasters on global crop production
2. code Baas S , Conforti P , Ahmed S , Markova G . The impact of disasters and crises on agriculture and food security, 2017. 2018.
3. National Oceanographic and Atmospheric Administration. US billion-dollar weather and climate disasters. 2018.
4. Zhang J , Zhang S , Cheng M , Jiang H , Zhang X , Peng C , et al. Effect of Drought on Agronomic Traits of Rice and Wheat: A Meta-Analysis. Int J Environ Res Public Health 2018; 15.
5. Hirasawa T , Ito O , Hardy B . Physiological characterization of the rice plant for tolerance of water deficit. Genetic improvement of rice for water-limited environments Los Baños, Philippines: International Rice Research Institute 1999; 89–98.