Source:http://linkedlifedata.com/resource/pubmed/id/16593308
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
9
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| pubmed:dateCreated |
2010-6-30
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| pubmed:abstractText |
Plant gene products that could play a role in the process of symbiotic nitrogen fixation in leguminous plants were detected by screening a cDNA library prepared from soybean nodule poly(A)(+) RNA. About 13% of the 5,700 clones screened contained sequences detectable with a root cDNA probe while about 2,100 clones (37% of the library) contained sequences that were detectable only with nodule cDNA. Five unique sequence species, accounting for more than half of the 2,100 nodule-specific clones, were identified by cross-hybridization experiments. The most abundant species, represented by 860 clones, encodes the well-characterized protein, leghemoglobin (Lb). The other four species, designated NodA, NodB, NodC, and NodD, are represented by 350, 55, 61, and 6 clones, respectively. Each of these four species was found to be encoded by the plant nuclear genome at low copy number. The transcripts corresponding to the nodule-specific clones represented 12-15% (Lb), 6% (NodA), and 0.5-1.1% (NodB, NodC, and NodD) mole fraction of nodule polysomal mRNAs but could not be detected in root polysomal RNA. Hybrid-selection of nodule mRNAs by representative clones and in vitro translation indicated that polypeptides of M(r) 44,000, 27,000, 24,000, and 100,000-120,000 are encoded by NodA, NodB, NodC, and NodD sequences, respectively. These polypeptides reacted with antiserum prepared against total soluble nodule proteins suggesting that the cloned sequences encode nodule-specific proteins, nodulins.
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| pubmed:commentsCorrections |
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http://linkedlifedata.com/resource/pubmed/commentcorrection/16593308-7146147,
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http://linkedlifedata.com/resource/pubmed/commentcorrection/16593308-75887
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
May
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| pubmed:issn |
0027-8424
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
80
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
2594-8
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| pubmed:dateRevised |
2010-9-15
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| pubmed:year |
1983
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| pubmed:articleTitle |
Soybean nodulin genes: Analysis of cDNA clones reveals several major tissue-specific sequences in nitrogen-fixing root nodules.
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| pubmed:affiliation |
Plant Molecular Biology Laboratory, Department of Biology, McGill University, Montreal, Canada.
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| pubmed:publicationType |
Journal Article
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