PMID- 22586999
OWN - NLM
STAT- MEDLINE
DCOM- 20120605
LR  - 20201209
IS  - 0001-6209 (Print)
IS  - 0001-6209 (Linking)
VI  - 52
IP  - 2
DP  - 2012 Feb 4
TI  - [Effects of ammonium sulfate on the metabolism and K-feldspar weathering of two 
      potassium-bearing mineral-solubilizing bacteria].
PG  - 206-13
AB  - OBJECTIVE: To determine the best conditions for Bacillus globisporus Q12 and 
      Rhizobium sp. Q32 to produce organic acids and extracellular polysaccharides, 
      respectively, and further elucidate the weathering mechanism of the two 
      potassium-bearing mineral-solubilizing bacteria. METHODS: Different contents 
      (0-1.2 g/L) of (NH4)2SO4 were added to media to analyze the ability of the 
      strains to produce organic acids and extracellular polysaccharides, and assess 
      the ability of Q12, Q32 and their mixture to dissolve potassium feldspar. 
      Scanning electron microscope (SEM) was also used to observe the distribution of 
      the bacterial cells on the surfaces of the feldspar and the mineral weathering. 
      RESULTS: Results show that Bacillus globisporus Q12 produced more organic acids, 
      when the contents of (NH4)2SO4 were 0.6 g/L; Rhizobium sp. Q32 produced more 
      extracellular polysaccharides, when there was no (NH4)2SO4 in the media; and the 
      mixture of two strains produced more organic acids and extracellular 
      polysaccharides, when the contents of (NH4)2SO4 were 0.3 g/L. Mineral dissolution 
      experiment showed that Bacillus globisporus Q12, Rhizobium sp. Q32 and the 
      mixture (Q12 + Q32) significantly dissolved the feldspar and released the 
      elements from the mineral, of which the mixture of Q12 and Q32 had the best 
      weathering ability than strain Q12 or Q32; SEM also indicated that the mixture of 
      Q12 and Q32 had more ability to weather feldspar than each tested strain. 
      CONCLUSION: The contents of (NH4)2SO4 in the media could affect the growth and 
      metabolites of the strains Q12 and Q32 and the mineral bioweathering, the mixture 
      of strains Q12 and Q32 had the more potential of feldspar weathering through the 
      combined action of organic acids and extracellular polysaccharides produced by 
      strains Q12 and Q32.
FAU - Huang, Zhi
AU  - Huang Z
AD  - College of Life Science, Nanjing Agriculture University, Key Laboratory of 
      Agricultural Environmental Microbiology, Ministry of Agriculture, Nanjing 210095, 
      China. zhuang@njau.edu.cn
FAU - Ma, Guangyou
AU  - Ma G
FAU - He, Linyan
AU  - He L
FAU - Sheng, Xiafang
AU  - Sheng X
LA  - chi
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - China
TA  - Wei Sheng Wu Xue Bao
JT  - Wei sheng wu xue bao = Acta microbiologica Sinica
JID - 21610860R
RN  - 0 (Aluminum Silicates)
RN  - 0 (Culture Media)
RN  - 0 (Potassium Compounds)
RN  - 12168-80-8 (feldspar)
RN  - RWP5GA015D (Potassium)
RN  - SU46BAM238 (Ammonium Sulfate)
SB  - IM
MH  - Aluminum Silicates/*metabolism
MH  - Ammonium Sulfate/*pharmacology
MH  - Bacillus/*metabolism
MH  - Culture Media
MH  - Hydrogen-Ion Concentration
MH  - Potassium/*metabolism
MH  - Potassium Compounds/*metabolism
MH  - Rhizobium/*metabolism
MH  - Solubility
EDAT- 2012/05/17 06:00
MHDA- 2012/06/06 06:00
CRDT- 2012/05/17 06:00
PHST- 2012/05/17 06:00 [entrez]
PHST- 2012/05/17 06:00 [pubmed]
PHST- 2012/06/06 06:00 [medline]
PST - ppublish
SO  - Wei Sheng Wu Xue Bao. 2012 Feb 4;52(2):206-13.