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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2008.02576.x
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Zakir, Hossain A K M
|e verfasserin
|4 aut
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|a Detection, isolation and characterization of a root-exuded compound, methyl 3-(4-hydroxyphenyl) propionate, responsible for biological nitrification inhibition by sorghum (Sorghum bicolor)
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|c 2008
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 03.03.2009
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|a Date Revised 08.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Nitrification results in poor nitrogen (N) recovery and negative environmental impacts in most agricultural systems. Some plant species release secondary metabolites from their roots that inhibit nitrification, a phenomenon known as biological nitrification inhibition (BNI). Here, we attempt to characterize BNI in sorghum (Sorghum bicolor). In solution culture, the effect of N nutrition and plant age was studied on BNI activity from roots. A bioluminescence assay using recombinant Nitrosomonas europaea was employed to determine the inhibitory effect of root exudates. One major active constituent was isolated by activity-guided HPLC fractionations. The structure was analysed using NMR and mass spectrometry. Properties and the 70% inhibitory concentration (IC(70)) of this compound were determined by in vitro assay. Sorghum had significant BNI capacity, releasing 20 allylthiourea units (ATU) g(-1) root DW d(-1). Release of BNI compounds increased with growth stage and concentration of supply. NH4+ -grown plants released several-fold higher BNI compounds than NO3- -grown plants. The active constituent was identified as methyl 3-(4-hydroxyphenyl) propionate. BNI compound release from roots is a physiologically active process, stimulated by the presence of NH4+. Methyl 3-(4-hydroxyphenyl) propionate is the first compound purified from the root exudates of any species; this is an important step towards better understanding BNI in sorghum
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Enzyme Inhibitors
|2 NLM
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|a Phenols
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|a Plant Exudates
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|a Propionates
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|a methyl 3-(4-hydroxyphenyl)propionate
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|a Hydroxylamine
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|a 2FP81O2L9Z
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|a Nitrogen
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|a N762921K75
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|a Subbarao, Guntur V
|e verfasserin
|4 aut
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|a Pearse, Stuart J
|e verfasserin
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|a Gopalakrishnan, Subramaniam
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|4 aut
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|a Ito, Osamu
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|4 aut
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|a Ishikawa, Takayuki
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|4 aut
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|a Kawano, Naoyoshi
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|a Nakahara, Kazuhiko
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|4 aut
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|a Yoshihashi, Tadashi
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|4 aut
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|a Ono, Hiroshi
|e verfasserin
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|a Yoshida, Mitsuru
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 180(2008), 2 vom: 15., Seite 442-451
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:180
|g year:2008
|g number:2
|g day:15
|g pages:442-451
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|u http://dx.doi.org/10.1111/j.1469-8137.2008.02576.x
|3 Volltext
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|d 180
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