Phytomicrobiome Community: An Agrarian Perspective Towards Resilient Agriculture

Sharma, Mayur Mukut Murlidhar; Sharma, Pankaj; Kapoor, Divya; Beniwal, Puneet; Mehta, Sahil

doi:10.1007/978-3-030-78521-5_20

Cited by 8 publications

(1 citation statement)

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“…The use of C. myrtifolia in tanning and dyeing processes is well documented in medieval texts—mainly from Catalunya ( Cardon and Pinto, 2007 ). The phytomicrobiome or plant microbiome consists of a diverse array of beneficial, neutral, or damaging microorganisms associated with all plant compartments; above (phyllosphere) or below (rhizosphere) ground as epiphytes (on surface), endophytes (within) or nearby plant tissues ( Singh and Trivedi, 2017 ; Sharma et al, 2021 ). Phytomicrobiome has attracted extensive interest in recent years because of the crucial role it plays in plant growth, health, and ecological function and for current and future biotechnological applications ( Turner et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Decrypting phytomicrobiome of the neurotoxic actinorhizal species, Coriaria myrtifolia, and dispersal boundary of Frankia cluster 2 in soil outward compatible host rhizosphere

Swanson

Sbissi²,

Ktari³

et al. 2022

Front. Microbiol.

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The actinorhizal plant, Coriaria myrtifolia, is a neurotoxic plant species endemic to the western Mediterranean area, which forms a nitrogen-fixing symbiosis with members of Frankia cluster 2. Contrarily to other Frankia clusters, the occurrence and mode of dispersal for infective cluster 2 units outside of the host plant rhizosphere remains controversial. The present study was designed to investigate the structure of the microbiomes of C. myrtifolia phytosphere, rhizosphere, and soil samples extending outward linearly up to 1 km. Results showed that the epiphyte and endophyte communities were not significantly different from each other for most of the plant tissues. The communities associated with the below-ground tissues (nodule and root) were significantly different from those found on the above-ground tissues (fruit, leaves, and stems) and had a higher community richness. Coriaria myrtifolia phytomicrobiomes were dominated by Cyanobacteria for leaf, stem, and fruit while Actinobacteria and Proteobacteria were dominant in the root and nodule organelles. The nodule, a special niche for nitrogen fixation, was mainly inhabited by Frankia but contained several non-Frankia bacteria. Beside Frankia cluster 2, the presence of clusters 1, 4, and large numbers of cluster 3 strains have been detected in nodules, roots, and rhizospheres of C. myrtifolia. Despite Frankia being found in all plots using plant trapping bioassays with C. myrtifolia seedlings, Frankia cluster 2 was not detected in soil metagenomes showing the limits of detection by this approach. This result also suggests that in the absence of appropriate host plant species, Frankia cluster 2 has a reduced number of infective units present in the soil outward from the rhizosphere.

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