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Title: Specialized microbiome of a halophyte and its role in helping non-host plants to withstand salinity

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep32467· OSTI ID:1325488
 [1];  [2];  [3];  [4];  [1];  [5];  [6];  [3];  [6]
  1. Chinese Academy of Forestry, Hangzhou (People's Republic of China)
  2. Institute of Chemical Engineering, Vienna (Austria)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Adaptive Symbiotic Technologies, Seattle, WA (United States)
  5. Adaptive Symbiotic Technologies, Seattle, WA (United States); Univ. of Washington, Seattle, WA (United States)
  6. Zhejiang Univ. (People's Republic of China)

Root microbiota is a crucial determinant of plant productivity and stress tolerance. Here, we hypothesize that the superior halo-tolerance of seepweed Suaeda salsa is tightly linked to a specialized belowground microbiome. To test this hypothesis, we performed a phylogenetic trait-based framework analysis based on bacterial 16S rRNA gene and fungal nuclear rRNA internal transcribed spacer profiling. Data showed that the dominant α-proteobacteria and γ-proteobacteria communities in bulk soil and root endosphere tend to be phylogenetically clustered and at the same time exhibit phylogenetic over-dispersion in rhizosphere. Likewise, the dominant fungal genera occurred at high phylogenetic redundancy. Interestingly, we found the genomes of rhizospheric and endophytic bacteria associated with S. salsa to be enriched in genes contributing to salt stress acclimatization, nutrient solubilization and competitive root colonization. A wide diversity of rhizobacteria with similarity to known halotolerant taxa further supported this interpretation. These findings suggest that an ecological patterned root-microbial interaction strategy has been adopted in S. salsa system to confront soil salinity. We also demonstrated that the potential core microbiome members improve non-host plants growth and salt tolerance. As a result, this work provides a platform to improve plant fitness with halophytes-microbial associates and novel insights into the functions of plant microbiome under salinity.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1325488
Journal Information:
Scientific Reports, Vol. 6, Issue 10; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 121 works
Citation information provided by
Web of Science

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Strengthening desert plant biotechnology research in the United Arab Emirates: a viewpoint journal May 2018
Microbial Communities and Their Predicted Metabolic Functions in Growth Laminae of a Unique Large Conical Mat from Lake Untersee, East Antarctica journal August 2017
Deploying root microbiome of halophytes to improve salinity tolerance of crops journal January 2020
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The Microbiome and Mosquito Vectorial Capacity: Rich Potential for Discovery and Translation posted_content December 2020
Salt-tolerant and plant-growth-promoting bacteria isolated from high-yield paddy soil journal December 2018
Plant Host-Associated Mechanisms for Microbial Selection journal July 2019
Bacterial Diversity Associated With the Rhizosphere and Endosphere of Two Halophytes: Glaux maritima and Salicornia europaea journal November 2018
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Specialized core bacteria associate with plants adapted to adverse environment with high calcium contents journal March 2018
Halophytes in biosaline agriculture: Mechanism, utilization, and value addition journal November 2017
Building plant microbiome vault: a future biotechnological resource journal September 2018
Revegetation on abandoned salt ponds relieves the seasonal fluctuation of soil microbiomes journal June 2019
Research priorities for harnessing plant microbiomes in sustainable agriculture journal March 2017
Potential of Bacopa monnieri (L.) Wettst and Sesuvium verrucosum Raf. as an agronomic management alternative to recover the productivity of saline soils journal September 2019
Salt tolerance of Cressa cretica and its rhizosphere microbiota journal February 2020
Salt-Tolerant Halophyte Rhizosphere Bacteria Stimulate Growth of Alfalfa in Salty Soil journal August 2019
Endophytic Bacteria in Plant Salt Stress Tolerance: Current and Future Prospects journal November 2018
The Combination of Trichoderma harzianum and Chemical Fertilization Leads to the Deregulation of Phytohormone Networking, Preventing the Adaptive Responses of Tomato Plants to Salt Stress journal March 2017
Mining Halophytes for Plant Growth-Promoting Halotolerant Bacteria to Enhance the Salinity Tolerance of Non-halophytic Crops journal February 2018
Marine cyanolichens from different littoral zones are associated with distinct bacterial communities posted_content June 2018
Ecological and functional adaptations to water management in a semiarid agroecosystem: a soil metaproteomics approach journal August 2017
The effects of soil phosphorus content on plant microbiota are driven by the plant phosphate starvation response text January 2019
Mining the roots of various species of the halophyte Suaeda for halotolerant nitrogen-fixing endophytic bacteria with the potential for promoting plant growth journal January 2020
Potential of a halophyte-associated endophytic fungus for sustaining Chinese white poplar growth under salinity journal February 2018