Bacterial endophyte communities in the foliage of coast redwood and giant sequoia
Journal Article
·
· Frontiers in Microbiology
- University of California, Merced, CA (United States). Life and Environmental Sciences, School of Natural Sciences; Duke Univ., Durham, NC (United States). Department of Biology; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Environmental Sciences Division
- University of California, Merced, CA (United States). Life and Environmental Sciences, School of Natural Sciences and Sierra Nevada Research Institute
The endophytic bacterial microbiome, with an emerging role in plant nutrient acquisition and stress tolerance, is much less studied in natural plant populations than in agricultural crops. In a previous study, we found consistent associations between trees in the pine family and acetic acid bacteria (AAB) occurring at high relative abundance inside their needles. Our objective here was to determine if that pattern may be general to conifers, or alternatively, is more likely restricted to pines or conifers growing in nutrient limited and exposed environments. We used 16S rRNA pyrosequencing to characterize the foliar endophyte communities of two conifers in the Cupressaceae family: Two coast redwood (CR; Sequoia sempervirens) populations and one giant sequoia (GS; Sequoiadendron giganteum) population were sampled. Similar to the pines, the endophyte communities of the giant trees were dominated by Proteobacteria, Firmicutes, Acidobacteria, and Actinobacteria. However, although some major operational taxonomic units (OTUs) occurred at a high relative abundance of 10–40% in multiple samples, no specific group of bacteria dominated the endophyte community to the extent previously observed in high-elevation pines. Several of the dominating bacterial groups in the CR and GS foliage (e.g., Bacillus, Burkholderia, Actinomycetes) are known for disease- and pest suppression, raising the possibility that the endophytic microbiome protects the giant trees against biotic stress. Many of the most common and abundant OTUs in our dataset were most similar to 16S rRNA sequences from bacteria found in lichens or arctic plants. For example, an OTU belonging to the uncultured Rhizobiales LAR1 lineage, which is commonly associated with lichens, was observed at high relative abundance in many of the CR samples. Lastly, the taxa shared between the giant trees, arctic plants, and lichens may be part of a broadly defined endophyte microbiome common to temperate, boreal, and tundra ecosystems.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1341541
- Journal Information:
- Frontiers in Microbiology, Journal Name: Frontiers in Microbiology Vol. 6; ISSN 1664-302X
- Publisher:
- Frontiers Research FoundationCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Bacterial endophyte communities in Pinus flexilis are structured by host age, tissue type, and environmental factors
Distinct Microbial Communities within the Endosphere and Rhizosphere of Populus deltoides Roots across Contrasting Soil Types.
Insight into the Bacterial Endophytic Communities of Peach Cultivars Related to Crown Gall Disease Resistance
Journal Article
·
Tue May 22 20:00:00 EDT 2018
· Plant and Soil
·
OSTI ID:1567127
Distinct Microbial Communities within the Endosphere and Rhizosphere of Populus deltoides Roots across Contrasting Soil Types.
Journal Article
·
Fri Dec 31 23:00:00 EST 2010
· Applied and Environmental Microbiology
·
OSTI ID:1024268
Insight into the Bacterial Endophytic Communities of Peach Cultivars Related to Crown Gall Disease Resistance
Journal Article
·
Wed Apr 17 20:00:00 EDT 2019
· Applied and Environmental Microbiology
·
OSTI ID:1581341