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The Influence of Rhizobium Meliloti on Environment pH

Ying Luo

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Abstract

Six strains of Rhizobium meliloti were isolated that grew in the environment of 1%~8%NaCl,or 1%~8% K_(2)SO_(4),or pH7~13.They have a characteristic of strong saline-alkali tolerance.Except one strain of Rhizobium meliloti that produces alkali,the other 5 isolates produce acid.With the increase of pH,and concentrations of NaCl and K_(2)SO_(4),corresponding capacities of producing acid/alkali of Rhizobium meliloti gradually descend.Rhizobium meliloti can improve Environment pH by producing acid and alkali.Therefore,Rhizobium meliloti can meliorate alkaline land with high pH to a certain degree.

About this research paper

What this paper is about

Six strains of Rhizobium meliloti were isolated that grew in the environment of 1%~8%NaCl,or 1%~8% K_(2)SO_(4),or pH7~13.They have a characteristic of strong saline-alkali tolerance.Except one strain of Rhizobium meliloti that produces alkali,the other 5 isolates produce acid.With the increase of pH,and concentrations of NaCl and K_(2)SO_(4),corresponding capacities of producing acid/alkali of Rhizobium meliloti gradually descend.Rhizobium meliloti can improve Environment pH by producing acid and alkali.Therefore,Rhizobium meliloti can meliorate alkaline land with high pH to a certain degree.

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Available abstract

Six strains of Rhizobium meliloti were isolated that grew in the environment of 1%~8%NaCl,or 1%~8% K_(2)SO_(4),or pH7~13.They have a characteristic of strong saline-alkali tolerance.Except one strain of Rhizobium meliloti that produces alkali,the other 5 isolates produce acid.With the increase of pH,and concentrations of NaCl and K_(2)SO_(4),corresponding capacities of producing acid/alkali of Rhizobium meliloti gradually descend.Rhizobium meliloti can improve Environment pH by producing acid and alkali.Therefore,Rhizobium meliloti can meliorate alkaline land with high pH to a certain degree.

Key concepts: Rhizobium, Alkali metal, Strain (injury), Rhizobiaceae, Chemistry, Biology, Bacteria, Symbiosis

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