Rhizosphere microbiome: Functional compensatory assembly for plant fitness

Xun, Weibing; Shao, Jiahui; Shen, Qirong; Zhang, Ruifu

doi:10.1016/j.csbj.2021.09.035

Cited by 31 publications

(16 citation statements)

References 96 publications

(96 reference statements)

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“…For sugarcane, genotype influences on the modulation of the associated microbiota are reported 17 , 18 . Even so, these results are according to previous studies which placed the soil properties (i.e., soil texture, water content, and soil type) and host plant (i.e., plant species) as the main drivers of the rhizosphere microbiome assembly 56 , since the soils were very similar and the cultivar was the same in both systems.…”

Section: Discussionsupporting

confidence: 83%

Sugarcane cultivation practices modulate rhizosphere microbial community composition and structure

Moneda

Carvalho

Teherán-Sierra

et al. 2022

Sci Rep

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Sugarcane (Saccharum spp.) represents a crop of great economic importance, remarkably relevant in the food industry and energy supply chains from renewable sources. However, its conventional cultivation involves the intensive use of fertilizers, pesticides, and other agrochemical agents whose detrimental effects on the environment are notorious. Alternative systems, such as organic farming, have been presented as an environmentally friendly way of production. Still, the outcomes of different cropping systems on the microbiota associated with sugarcane—whose role in its health and growth is crucial—remain underexplored. Thus, we studied the rhizospheric microbiota of two adjacent sugarcane fields, which differ in terms of the type of farming system. For this, we used the sequencing of taxonomic markers of prokaryotes (gene 16S rRNA, subregions V3–V4) and fungi (Internal transcribed spacer 2) and evaluated the changes caused by the systems. Our results show a well-conserved microbiota composition among farming systems in the highest taxonomic ranks, such as phylum, class, and order. Also, both systems showed very similar alpha diversity indices and shared core taxa with growth-promoting capacities, such as bacteria from the Bacillus and Bradyrhizobium genera and the fungal genus Trichoderma. However, the composition at more specific levels denotes differences, such as the separation of the samples concerning beta diversity and the identification of 74 differentially abundant taxa between the systems. Of these, 60 were fungal taxa, indicating that this microbiota quota is more susceptible to changes caused by farming systems. The analysis of co-occurrence networks also showed the formation of peripheral sub-networks associated with the treatments—especially in fungi—and the presence of keystone taxa in terms of their ability to mediate relationships between other members of microbial communities. Considering that both crop fields used the same cultivar and had almost identical soil properties, we conclude that the observed findings are effects of the activities intrinsic to each system and can contribute to a better understanding of the effects of farming practices on the plant microbiome.

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Section: Discussionsupporting

confidence: 83%

Sugarcane cultivation practices modulate rhizosphere microbial community composition and structure

Moneda

Carvalho

Teherán-Sierra

et al. 2022

Sci Rep

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“…Microorganisms play an important role in the regulation of ecological function of wetlands and are critical for maintaining the health of the global ecosystem. Symbiotic microorganisms are crucial for the survival of plants in these extreme ecosystems ( 17 ) as they facilitate water and nutrient uptake by the host plant by forming associations with root systems that in turn provide photosynthate (carbon sources) for the growth of microbes. In this manner, a stable survival niche is established and maintained ( 18 – 20 ).…”

Section: Introductionmentioning

confidence: 99%

Study of Wetland Soils of the Salar de Atacama with Different Azonal Vegetative Formations Reveals Changes in the Microbiota Associated with Hygrophile Plant Type on the Soil Surface

et al. 2022

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The study of the composition and diversity of the wetland soil microbiota associated with hygrophilous plants in a desert ecosystem of the high Puna in northern Chile makes it an ideal approach to search for novel extremophilic microorganisms with unique properties. These microorganisms are adapted to survive in ecological niches, such as those with high UV irradiation, extreme drought, and high salt concentration; they can be applied in various fields, such as biotechnology and astrobiology, and industries, including the pharmaceutical, food, agricultural, biofuel, cosmetic, and textile industries.

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“…The plant microbiome has been recognized as an important determinant of plant growth and fitness and has been extensively studied to enhance the productivity, stress resistance, and health of plants 24 , 25 . However, the structures of the rhizosphere and endogenous microbiome of endemic plants in wild habitat ecosystems and changes in microbial community structures by domestication remain underexplored.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of rhizosphere and endogenous bacterial community of Ulleung-sanmaneul, an endemic plant in Korea: application for alleviating salt stress

Dutta

Kim

Lee

2022

Sci Rep

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Microbes influence plant growth and fitness. However, the structure and function of microbiomes associated with rare and endemic plants remain underexplored. To investigate the bacterial community structure of Ulleung-sanmaneul (U-SMN), an endemic plant in Korea, samples were collected from natural and cultivated habitats, and their 16S rDNA was sequenced. The root bacterial community structure differed from those of bulk soil and rhizosphere in both habitats. Endogenous bacteria in cultivated plants were less diverse than wild plants, but Luteibacter rhizovicinus, Pseudomonas fulva, and Sphingomonas pruni were shared. Co-inoculation of Pseudoxanthomonas sp. JBCE485 and Variovorax paradoxus JBCE486 promoted growth and induced salt stress resistance in Arabidopsis and chive. Changes in growth promotion and phenotypes of plants by co-inoculation were mediated by increased auxin production. Each strain colonized the roots without niche competition. The results indicated that host selectivity was influential than environmental factors in formulating endophytic bacterial composition, and domestication simplified the bacterial community diversity. Our results will contribute to the growth and maintenance of endemic U-SMN plants.

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Rhizosphere microbiome: Functional compensatory assembly for plant fitness

Cited by 31 publications

References 96 publications

Sugarcane cultivation practices modulate rhizosphere microbial community composition and structure

Sugarcane cultivation practices modulate rhizosphere microbial community composition and structure

Study of Wetland Soils of the Salar de Atacama with Different Azonal Vegetative Formations Reveals Changes in the Microbiota Associated with Hygrophile Plant Type on the Soil Surface

Characteristics of rhizosphere and endogenous bacterial community of Ulleung-sanmaneul, an endemic plant in Korea: application for alleviating salt stress

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