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Plants live with a diversity of microorganisms throughout their lifespan. Plants recruit and shape microbiome structures through topological and chemical strategies. Meanwhile, plant growth and resilience are heavily impacted by associated microbiomes. Studies of plant microbiomes not only shed light on principles underlying the assembly and dynamics of plant-associated microbiomes but also provide strategic insights into microbiome engineering to boost plant health and sustainable agriculture. The editors of Nature Communications, Communications Biology and Scientific Reports invite submissions on plant microbiomes.
Intercropping has the potential to improve plant nutrition and crop yield. Here, the authors intercrop peanut and maize and show that Pseudomonas secreted siderophore pyoverdine play an important role in plant iron nutrition.
The underlying mechanisms of host-driven assembly of phyllosphere microbiota remain largely unknown. Here, 4-hydroxycinnamic acid synthesized by the rice plant’s PAL02 in the phenylpropanoid biosynthesis pathway is shown to be the main driver for enrichment of Pseudomonadales bacteria.
The identification of processes activated by specific microbes during microbiota colonization of plant roots is hampered by technical issues in metatranscriptomics. Here, Vannier et al. colonized germ-free plants with a defined root microbiota comprising over 100 microbial isolates, and addressed those issues in various ways to identify strain-specific processes as well as common gene sets activated by microbes during root colonization.
The authors investigate microbiota properties for plant protection using synthetic communities and machine learning approaches. They identify strains that reduce pathogen colonization despite variation in microbiota composition.
The study reveals the diversity, specificity and functionality of phyllosphere endophytes in alfalfa silage fermentation and finds a unique microbe resource in phyllosphere endophytes which tends to enrich genes related to carbohydrate utilization.
Ecotype-specific steroidal saponins and diterpenoids from Panicum virgatum (switchgrass) influence growth inhibition of fungal species previously associated with the rhizosphere of cultivars of this plant.
Ecological mechanisms governing inheritance of bacterial and fungal communities from seed to seed in rice are revealed. The inherited microbes dominate each community at the ripening stage, and parental seeds and stem endosphere are major sources.