Abstract:
:The mitochondrial respiratory chain (MRC) supplies the majority of the energy requirements of most eucaryotic cells. A null mutation in the Caenorhabditis elegans nuo-1 gene encoding a subunit of complex I (NADH-ubiquinone oxidoreductase) is lethal, leading to a developmental arrest at the third larval stage. To identify the tissues that regulate development in response to mitochondrial dysfunction, we restored nuo-1 expression with tissue-specific promoters. Only expression of nuo-1 ubiquitously or in the nervous system supported development to the adult stage. Pharyngeal expression of nuo-1 allowed development to proceed to the fourth larval stage. Expression of nuo-1 in the body muscles or in the germline had no effect. Furthermore, only ubiquitous or nervous system expression of nuo-1 allowed exit from the dauer state. Our results indicate that MRC function in the nervous system is needed to send and receive signals that control larval development and exit from dauer.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Ndegwa S,Lemire BDdoi
10.1016/j.bbrc.2004.05.108subject
Has Abstractpub_date
2004-07-09 00:00:00pages
1307-13issue
4eissn
0006-291Xissn
1090-2104pii
S0006291X04011003journal_volume
319pub_type
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