Comprehensive Analysis of Plant Gene Expression in Soybean Root Nodules at Different Growth Stages (Plant Nutrition)
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概要
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Gene expression profiles in early (12 d after sowing, DAS), mature (35 DAS) and senescent (77 DAS) soybean (Glycine max (L.) Merr. cv. Enrei) root nodules were analyzed using Lotus japonicus cDNA macroarray. The cDNA macroarray membranes contained 18,144 independent cDNAs of L. japonicus isolated from various organs. The membranes were hybridized to ^<33>P-labeled single-strand cDNAs transcribed from mRNA extracted from the soybean root nodules at three different growth stages. The results showed that over 75% of the cDNA clones gave a relative signal intensity (RSI) lower than 300, irrespective of the soybean growth stage. cDNA with an RSI value over 5,000 accounted for 2.1, 1.2 and 0.5% of the total cDNA clones at 12, 35 and 77 DAS, respectively. The highest RSI value was detected in a clone hybridized to putative pectinesterase (MWM097c10_r) at 12 DAS, while the RSI value of lycopene β-cyclase (MWL025d06_r) was the highest at 35 and 77 DAS. At 77 DAS, the percentage of transferase gene cDNA clones accounted for 20.5% of the total cDNA clones showing an RSI value over 500, a value clearly lower than that at 12 and 35 DAS. On the other hand, the percentage of hydrolase gene cDNA clones accounted for 45.2% at 77 DAS, a value around 1.5 times higher than that at 12 and 35 DAS. The chronological RSI profiles of individual cDNA clones were classified into nine patterns, and the profiles of the cDNA clones belonging to 15 homologous gene groups encoding enzymes of nitrogen and carbon metabolism, nodule specific proteins, enzymes of RNA and protein hydrolysis, and synthesis of jasmonic acid precursor were compared within and between groups. As a result, significant variations both within- and between-groups were revealed.
- 社団法人日本土壌肥料学会の論文
著者
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ARIMA Yasuhiro
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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YOKOYAMA Tadashi
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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Arima Yasuhiro
Tokyo Univ. Agriculture And Technol. Tokyo Jpn
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Arima Yasuhiro
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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Kaewsuralikhit Sirilak
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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Kouchi Hirochi
National Institute of Agrobiological Resources
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Yokoyama Tadashi
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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Yokoyama Tadashi
Tokyo Univ. Agriculture And Technol. Tokyo Jpn
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Kaewsuralikhit Sirilak
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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