Nitrous oxide emission and microbial community in the rhizosphere of nodulated soybeans during the late growth period

Shoko Inaba, Kenji Tanabe, Shima Eda, Seishi Ikeda, Atsushi Higashitani, Hisayuki Mitsui, Kiwamu Minamisawa

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We examined N2O emissions from the rhizosphere of field-grown soybeans during the late growth stage (99-117 days after sowing). Marked emissions were detected from the nodulated root systems of field-grown soybeans, whereas a non-nodulating soybean mutant showed no emission. Degraded nodules exclusively generated the N2O. A culture-independent analysis of microbial communities showed Bradyrhizobium sp., Acidvorax facilis, Salmonella enterica, Xanthomonas sp., Enterobacter cloacae, Pseudomonas putida, Fusarium sp., nematodes, and other protozoans to be more abundant in the degraded nodules, suggesting that some of these organisms participate in the N 2O emission process in the soybean rhizosphere.

Original languageEnglish
Pages (from-to)64-67
Number of pages4
JournalMicrobes and environments
Volume24
Issue number1
DOIs
Publication statusPublished - 2009

Keywords

  • Microbial community
  • Nitrous oxide
  • Rhizobia
  • Rhizosphere
  • Soybean

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Soil Science
  • Plant Science

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