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Fluctuations in the abundance of ammonia oxidizers and the contents of inorganic nitrogen in solarized soil
- Source :
- Soil Science and Plant Nutrition. 63:434-440
- Publication Year :
- 2017
- Publisher :
- Informa UK Limited, 2017.
-
Abstract
- Solarization makes a great impact on the abundance of ammonia oxidizers and nitrifying activity in soil. To elucidate fluctuations in the abundance of ammonia oxidizers and nitrification in solarized soil, copy numbers of amoA gene of ammonia-oxidizing bacteria (AOB) and archaea (AOA), viable number of ammonia oxidizers and inorganic nitrogen contents were investigated in greenhouse experiments. The copy number of amoA gene and the viable number of ammonia oxidizers were determined by the quantitative polymerase chain reaction and most probable number methods, respectively. Abundance of AOB based on the estimation of amoA gene copy numbers and viable counts of ammonia oxidizers was decreased by the solarization treatment and increased during the tomato (Solanum lycopersicum L.) cultivation period following the solarization. Effect of solarization on the copy number of amoA gene of AOA was less evident than that on AOB. The proportion of nitrate in inorganic nitrogen contents was declined by the solarization and increased during the tomato cultivation period following the solarization. Positive correlations were found between the proportion of nitrate in inorganic nitrogen content and the copy number of bacterial or archaeal amoA gene or the viable number of ammonia oxidizers; the copy number of bacterial amoA gene showed a strong correlation with the viable number of ammonia oxidizers. The present study revealed influences of solarization on the fluctuation in the abundance of ammonia oxidizers and dynamics of inorganic nitrogen contents in soil and the results indicate that the determination of amoA gene of AOB is possibly a quick and useful diagnostic technique for evaluating suppression and restoration of nitrification following solarization.<br />ファイル公開日: 2018/08/18
- Subjects :
- 0301 basic medicine
030106 microbiology
Soil Science
Plant Science
03 medical and health sciences
chemistry.chemical_compound
Ammonia
Nitrate
Abundance (ecology)
Most probable number
Botany
Ammonia-oxidizing bacteria
integumentary system
biology
food and beverages
04 agricultural and veterinary sciences
biology.organism_classification
Solarisation
nitrification
solarization
chemistry
ammonia-oxidizing archaea
Environmental chemistry
quantitative PCR
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Nitrification
Bacteria
Archaea
Subjects
Details
- ISSN :
- 17470765 and 00380768
- Volume :
- 63
- Database :
- OpenAIRE
- Journal :
- Soil Science and Plant Nutrition
- Accession number :
- edsair.doi.dedup.....27ef81d1f8b7ed6270fd2eeec1b9ed93