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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Response to darkness of late-responsive dark-inducible genes is positively regulated by leaf age and negatively regulated by calmodulin-antagonist-sensitive signalling in Arabidopsis thaliana.

Induction after prolonged darkness distinguishes the late-responsive genes din2 and din9 from the early-responsive gene din3 in Arabidopsis. The former genes were coincidently induced with the senescence marker gene YLS4 in rosette leaves of different ages and in the early-senescence mutant hys1. The calmodulin antagonists W-7, trifluoperazine, and fluphenazine accelerated the expression of the former genes in darkness but not in light, and had little effect on the latter gene. Our results suggest that Ca(2+)/calmodulin signalling conveys a negative signal that suppresses the responses of late-responsive din genes to prolonged darkness. The results are discussed in relation to natural senescence.[1]

References

  1. Response to darkness of late-responsive dark-inducible genes is positively regulated by leaf age and negatively regulated by calmodulin-antagonist-sensitive signalling in Arabidopsis thaliana. Fujiki, Y., Nakagawa, Y., Furumoto, T., Yoshida, S., Biswal, B., Ito, M., Watanabe, A., Nishida, I. Plant Cell Physiol. (2005) [Pubmed]
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