Influence of Elevated Atmospheric Carbon Dioxide on Transcriptional Responses of Bradyrhizobium japonicum in the Soybean Rhizoplane

• Sugawara Masayuki

  Department of Soil, Water, and Climate, BioTechnology Institute, University of Minnesota

• Sadowsky Michael J.

  Department of Soil, Water, and Climate, BioTechnology Institute, University of Minnesota Microbial and Plant Genomics Institute, University of Minnesota

書誌事項

タイトル別名

• Influence of Elevated Atmospheric Carbon Dioxide on Transcriptional Responses of <i>Bradyrhizobium japonicum</i> in the Soybean Rhizoplane

抄録

Elevated atmospheric CO₂ can influence the structure and function of rhizoplane and rhizosphere microorganisms by altering root growth and the quality and quantity of compounds released into the rhizoplane and rhizosphere via root exudation. In these studies we investigated the transcriptional responses of Bradyrhizobium japonicum cells growing in the rhizoplane of soybean plants exposed to elevated atmospheric CO₂. The results of microarray analyses indicated that elevated atmospheric CO₂ concentration indirectly influenced the expression of a large number of genes in Bradyrhizobium attached to soybean roots. In addition, relative to plants and bacteria grown under ambient CO₂ growth conditions, genes involved in C1 metabolism, denitrification and FixK₂-associated genes, including those involved in nitrogen fixation, microaerobic respiration, respiratory nitrite reductase, and heme biosynthesis, were significantly up-regulated under conditions of elevated CO₂ in the rhizosphere. The expression profile of genes involved in lipochitooligosaccharide Nod factor biosynthesis and negative transcriptional regulators of nodulation genes, nolA and nodD₂, were also influenced by plant growth under conditions of elevated CO₂. Taken together, the results of these studies indicate that the growth of soybeans under conditions of elevated atmospheric CO₂ influences gene expressions in B. japonicum in the soybean rhizoplane, resulting in changes to carbon/nitrogen metabolism, respiration, and nodulation efficiency.<br>

収録刊行物

• Ｍｉｃｒｏｂｅｓ　ａｎｄ　ｅｎｖｉｒｏｎｍｅｎｔｓ

  Ｍｉｃｒｏｂｅｓ　ａｎｄ　ｅｎｖｉｒｏｎｍｅｎｔｓ 28 (2), 217-227, 2013

  日本微生物生態学会 / 日本土壌微生物学会 / Taiwan Society of Microbial Ecology / 植物微生物研究会 / 極限環境微生物学会

キーワード

• <i>Bradyrhizobium</i>
• elevated atmospheric CO₂
• microarray
• rhizoplane
• soybean

詳細情報

• CRID: 1390282679322487552
• NII論文ID: 10031158625
• NII書誌ID: AA11551577
• DOI: 10.1264/jsme2.me12190
• COI: 1:STN:280:DC%2BC3snjtFehsw%3D%3D
• ISSN: 13474405
• ISSN: 13426311
• NDL書誌ID: 024530219
• PubMed: 23666536
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024530219
• Web Site: https://www.jstage.jst.go.jp/article/jsme2/28/2/28_ME12190/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可