ISSN:
0192-253X
Keywords:
nodulins
;
leghemoglobin
;
glutamine synthetase
;
Enod2
;
cis-acting elements
;
transacting factors
;
Agrobacterium turnefaciens
;
A. rhizogenes
;
binary vectors
;
plant transformation
;
chimeric genes
;
chloramphenicol acetyltransferase
;
glucuronidase
;
cytokinin induction
;
Life and Medical Sciences
;
Genetics
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
Nodulin genes are plant genes specifically activated during the formation of nitrogen-fixing nodules on leguminous plants. These genes are interesting to study since they are not only induced in a specific developmental fashion by signals coming directly or indirectly from the rhizobial symbiont, but are also expressed in a tissue-specific manner. By examining the expression of chimeric nodulin-reporter genes in transgenic legume plants it has been shown that nodule specific expression is mediated by DNA sequences present in the 5′upstream region of several nodulin genes. Here we summarize the available data on these cis-acting elements and the trans-acting factors interacting with them. We also review experiments designed to identify rhizobial “signals” which may play a role in nodule specific gene expression.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/dvg.1020110304
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