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2 results for “the Mu Us desert”
Effects of Hedysarum leguminous plants on soil bacterial microbiome in the Mu Us desert, northwest China
<p><span>By assessing the influence of rhizocompartment types (i.e. root, rhizosphere soil, root zone soil, and inter-shrub bulk soil) on the diversity of soil microbial communities under desert leguminous plant shrubs, and the influence of, and variations in, soil physicochemical factors in interactions among leguminous plants, soil, and microbes. Both 16S rRNA high-throughput genome sequencing and conventional soil physicochemical index determination were used to characterise the bacterial diversity and soil physicochemical properties in the rhizocompartments of two <i>Hedysarum</i> spp. (<i>Hedysarum mongolicum</i> and <i>Hedysarum scoparium</i>) in the Mu Us Desert. We found that all the nutrient indices (except TP and AP), values in rhizosphere soil were uniformly higher than those in root zone soil and inter-shrub bulk soil (<i>P</i> < 0.05). The bacterial community diversity in the root, under-shrub (rhizosphere, root zone) and inter-shrub bulk soil also have significant differences (<i>P</i> < 0.05). Desert leguminous plants had significant effects on hierarchical filtration and enrichment of specific soil bacterial microbiomes (<i>P</i> < 0.05). Root endophyte and rhizosphere soil microbiomes were mainly influenced by soil nutrients, while the bacterial communities in root zones soil and inter-shrub bulk soil were mainly influenced by soil pH and NH<sub>4</sub><sup>+</sup>-N. The rhizocompartment types of desert leguminous plants have a significant influence on the diversity of soil microbial communities. According to our findings, nitrogen-fixing rhizobia can co-exist with non-symbiotic endophytes in the roots of desert leguminous plants, and plants have a hierarchical filtering and enriching effect on beneficial microbes in soil via rhizocompartments. Soil physicochemical factors have a significant influence on the structure and composition of microbial communities in various rhizocompartments, and this influence is derived from the interactions among leguminous plants, soil, and microbes.</span></p>
Effects of Hedysarum leguminous plants on soil bacterial microbiome in the Mu Us desert, northwest China
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