AI Article Synopsis
- Microbiomes are crucial for plant growth, but the genetic factors influencing their development are not well understood.
- The study analyzes the rhizosphere microbiome in a variety of wild and domesticated tomatoes, identifying gene regions that influence which bacteria are recruited, including important genes related to iron and water regulation.
- By combining microbiome research with plant genetics, the research highlights potential traits that could be used to improve plant-microbiome interactions in future breeding efforts.
Article Abstract
Microbiomes play a pivotal role in plant growth and health, but the genetic factors involved in microbiome assembly remain largely elusive. Here, we map the molecular features of the rhizosphere microbiome as quantitative traits of a diverse hybrid population of wild and domesticated tomato. Gene content analysis of prioritized tomato quantitative trait loci suggests a genetic basis for differential recruitment of various rhizobacterial lineages, including a Streptomyces-associated 6.31 Mbp region harboring tomato domestication sweeps and encoding, among others, the iron regulator FIT and the water channel aquaporin SlTIP2.3. Within metagenome-assembled genomes of root-associated Streptomyces and Cellvibrio, we identify bacterial genes involved in metabolism of plant polysaccharides, iron, sulfur, trehalose, and vitamins, whose genetic variation associates with specific tomato QTLs. By integrating 'microbiomics' and quantitative plant genetics, we pinpoint putative plant and reciprocal rhizobacterial traits underlying microbiome assembly, thereby providing a first step towards plant-microbiome breeding programs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203511 | PMC |
| http://dx.doi.org/10.1038/s41467-022-30849-9 | DOI Listing |
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