Archives of Biological Sciences (Jan 2008)

Linking Hsp90 function to micro-environmental and stochastic variation in floralorgans of Iris pumila L.

  • Tucić Branka,
  • Manitašević S.,
  • Vuleta A.,
  • Matić Gordana

DOI
https://doi.org/10.2298/ABS0803411T
Journal volume & issue
Vol. 60, no. 3
pp. 411 – 419

Abstract

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Hsp90 is an environmentally responsive molecular chaperone that was found to play a key role in buffering against genetic and non-genetic perturbations in the model organisms Arabidopsis and Drosophila. Here we analyzed the buffering capacity of Hsp90 against two kinds of non-genetic factors - stochastic noise and micro-environmental varia­tion of floral organ traits in naturally growing Iris pumila plants. We found no statistical association between the endog­enous level of Hsp90 and the floral organ radial symmetry produced by stochastic developmental noise. Conversely, floral organ plasticity in response to micro-environmental variation tended to be greater with decrease in Hsp90b isoform expression.

Keywords