Root microbiota drive direct integration of phosphate stress and immunity

By Gabriel Castrillo, Paulo José Pereira Lima Teixeira, Sur Herrera Paredes, T. F. Law, Laura de Lorenzo, Meghan E. Feltcher, Omri M. Finkel, N. Breakfield, P. Mieczkowski, Corbin D. Jones and 2 more. Nature, 2017

780 citations recorded by the source corpus.

Plants live in biogeochemically diverse soils with diverse microbiota. Plant organs associate intimately with a subset of these microbes, and the structure of the microbial community can be altered by soil nutrient content. Plant-associated microbes can compete with the plant and with each other for nutrients, but may also carry traits that increase the productivity of the plant. It is unknown how the plant immune system coordinates microbial recognition with nutritional cues during microbiome assembly. Here we establish that a genetic network controlling the phosphate stress response influences the structure of the root microbiome community, even under non-stress phosphate conditions. We define a molecular mechanism regulating coordination between nutrition and defence in the presence of a synthetic bacterial community. We further demonstrate that the master transcriptional regulators of phosphate stress response in Arabidopsis thaliana also directly repress defence, consistent with plant prioritization of nutritional stress over defence. Our work will further efforts to define and deploy useful microbes to enhance plant performance.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/9eceed7e72405c09bb91d057bd9f04e688b1cacf

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In Plant Science

1. Jian‐Kang Zhu
2. Lizhong Xiong
3. P. Bakker
4. Yan Guo
5. Yongqing Yang
6. C. Pieterse
7. R. Berendsen
8. Huazhong Shi

Citations in the corpus

• Assembly and ecological function of the root microbiome across angiosperm plant species (2018, background): “If host immunity shapes associated microbiota (4, 42, 43), or if hostmicrobiota affect immunity (43, 47), then host plants with similar root microbiomes may exhibit increased susceptibility to, and coinfection with, the same pathogens.”
• The Role of Soil Microorganisms in Plant Mineral Nutrition—Current Knowledge and Future Directions (2017, background): “How can we merge the progress in the individual areas of research to obtain an integrated view? Already we can design experiments with synthetic microbial communities to identify processes important for the establishment of effective communities using different plant genotypes (Castrillo et al., 201”
• Core microbiomes for sustainable agroecosystems (2018, background): “One of the master regulators of the plant phosphate starvation response is also responsible for some plant defence responses, and can thus drive changes in plant-associated microbiome structure 12,19 .”
• MYB72-dependent coumarin exudation shapes root microbiome assembly to promote plant health (2018, background): “3C), which is in line with previous findings (29, 35, 63).”
• Soil microbial community and network changes after long-term use of plastic mulch and nitrogen fertilization on semiarid farmland (2021, methodology): “The V3–V4 region of the bacterial 16S rRNA gene was amplified using the primer pair of 338F (5-ACTCCTACGGGAGGCAGCA-3) and 806R (5-GGACTACHVGGGTWTCTAAT-3) (Castrillo et al., 2017).”
• Plant abiotic stress response and nutrient use efficiency (2020, background): “Meanwhile, mutations in PHR1 influence root microbiome composition in plants grown in a phosphate (Pi)-repleted soil (Castrillo et al., 2017).”
• Microbial Interkingdom Interactions in Roots Promote Arabidopsis Survival (2018, positive): “A possibly unique feature of plant roots is their capacity to host simultaneously, besides the bacterial microbiota (Lebeis et al., 2015; Bai et al., 2015; Castrillo et al., 2017), a range of soil-borne filamentous eukaryotic microbes such as fungi and oomycetes that have evolved independently in di”
• Forest Tree Microbiomes and Associated Fungal Endophytes: Functional Roles and Impact on Forest Health (2019, background): “These observations emphasize the importance of host genotype and, at the same time, suggest that the interactions of beneficial microorganisms with a particular plant (tree) genotype must be taken into consideration in potential applications of endophytes as biocontrol or growth-promoting agents [24”