ORIGINAL RESEARCH
Root Radial Oxygen Loss and the Effects on Rhizosphere Microarea of Two Submerged Plants
Cuicui Tian1,2, Chunbo Wang1,2, Yingying Tian1,2, Xingqiang Wu1, Bangding Xiao1
 
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1Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology,
Chinese Academy of Sciences, Wuhan 430072, China
2University of Chinese Academy of Sciences, Beijing 100049, China
 
 
Submission date: 2015-01-07
 
 
Final revision date: 2015-03-02
 
 
Acceptance date: 2015-03-05
 
 
Publication date: 2015-07-27
 
 
Pol. J. Environ. Stud. 2015;24(4):1795-1802
 
KEYWORDS
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ABSTRACT
Radial oxygen loss (ROL) has been suggested to be a major process to protect plants exposed to the anaerobic by-products of soil anaerobiosis. The aim of the present study was to test the effects of root ROL from two submerged plants (Hydrilla verticillata and Vallisneria spiralis) on the rhizosphere oxygen profile and rhizosphere microarea. Phospholipid fatty acids (PLFAs) of sediment samples were used to characterize and quantify the microbial community. The results showed clearly that there were significant differences between the two plants in radial oxygen loss, which affected rhizosphere physicochemical parameters and the microbial community. Rhizosphere total biomass, bacteria, gram-positive bacteria, actinomycetes, and microbial diversity of V. spiralis were significantly higher than those of H. verticillata. The present study highlights root ROL as a key parameter affecting the microbial community of the rhizosphere microarea.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
 
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