Characterization of leaf blade- and leaf sheath-associated bacterial communities and assessment of their responses to environmental changes in CO₂, temperature, and nitrogen levels under field conditions

Microbes and Environments
Seishi IkedaKiwamu Minamisawa

Abstract

Rice shoot-associated bacterial communities at the panicle initiation stage were characterized and their responses to elevated surface water-soil temperature (ET), low nitrogen (LN), and free-air CO2 enrichment (FACE) were assessed by clone library analyses of the 16S rRNA gene. Principal coordinate analyses combining all sequence data for leaf blade- and leaf sheath-associated bacteria revealed that each bacterial community had a distinct structure, as supported by PC1 (61.5%), that was mainly attributed to the high abundance of Planctomycetes in leaf sheaths. Our results also indicated that the community structures of leaf blade-associated bacteria were more sensitive than those of leaf sheath-associated bacteria to the environmental factors examined. Among these environmental factors, LN strongly affected the community structures of leaf blade-associated bacteria by increasing the relative abundance of Bacilli. The most significant effect of FACE was also observed on leaf blade-associated bacteria under the LN condition, which was explained by decreases and increases in Agrobacterium and Pantoea, respectively. The community structures of leaf blade-associated bacteria under the combination of FACE and ET were more similar to...Continue Reading

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Citations

Mar 10, 2015·Frontiers in Microbiology·Takashi OkuboKiwamu Minamisawa
Apr 10, 2018·F1000Research·Heather C ManchingAnn E Stapleton
Jul 17, 2020·Microorganisms·Dragana MiljakovićSvetlana Balešević-Tubić
Dec 28, 2017·Microbes and Environments·Hiroyuki Imachi
Apr 10, 2018·F1000Research·Heather C ManchingAnn E Stapleton

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Methods Mentioned

BETA
PCR
FACE
environmental stresses
NMR

Software Mentioned

UniFrac
LibCompare
RDP
DNADIST
format
CLUSTAL W
Mothur
PHYLIP
BLASTN
FACE

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