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Differences in acquisition of organic nitrogen in soils between bok choy and tomato

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Title: Differences in acquisition of organic nitrogen in soils between bok choy and tomato
Authors: Watanabe, Toshihiro Browse this author →KAKEN DB
Enomoto, Takumi Browse this author
Sakurai, Michihiko Browse this author
Okamoto, Miwa Browse this author
Shinano, Takuro Browse this author
Osaki, Mitsuru Browse this author →KAKEN DB
Keywords: amino acid
Brassica rapa L. var. chinensis
cattle farmyard manure
organic nitrogen
Solanum lycopersicum L.
Issue Date: 26-Jun-2012
Publisher: Taylor & Francis
Journal Title: Journal of Plant Nutrition
Volume: 35
Issue: 10
Start Page: 1468
End Page: 1476
Publisher DOI: 10.1080/01904167.2012.689907
Abstract: Seedlings of bok choy and tomato were grown in soils with different N nitrogen [no N (-N), ammonium sulfate (AS), and cattle farmyard manure (CM)]. Comparison between soils treated with -N and CM indicated that the growth and N accumulation in bok choy were significantly enhanced by CM treatment, whereas no difference was found in tomato. In the rhizosphere soils, the highest protease activity was detected in CM treatment irrespective of species. Correlation analysis between rhizospheric protease activity and total N accumulation of plant treated with -N and CM showed a significant positive correlation only for bok choy. The determination of amino acid absorption rate in excised roots indicated that glycine was taken up at a significantly higher rate in bok choy than tomato. This study suggested that at least two possible factors affected the acquisition of organic N: rhizospheric protease activity and ability to absorb amino acids in roots.
Rights: This is an electronic version of an article published in Journal of Plant Nutrition, 35(10), 1468-1476, Jun-2012. Journal of Plant Nutrition is available online at:
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡部 敏裕

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