Effect of Colonization of Manganese Oxidizing Bacteria on the Removal of Manganese and Ammonia Nitrogen from Water by Float-ing Plant Pistia stratiotes
Effect of Colonization of Manganese Oxidizing Bacteria on the Removal of Manganese and Ammonia Nitrogen from Water by Float-ing Plant Pistia stratiotes
Exiguobacterium sp.(OS)and Staphylococcus sciuri(WLS01),which were two strains of manganese oxidizing bacteria(MOB)with plant growth promoting potential,were inoculated in the roots of the floating plant Pistia stratiotes,respectively,the effects of MOB coloniza-tion on plants were studied by observing and measuring the growth and physiological response of plants before and after 14 days of water culti-vation,changes in manganese and ammonia nitrogen content in water,and changes in manganese transport by plants.The results showed that colonization of OS and WLS01 led to an increase in P.stratiotes biomass by 31.29%and 25.81%,respectively compared to the uncolonized group,and the colonization also improved the plant photosynthesis.But after colonization MOB,damage appeared in the roots of P.stratiotes.
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