Posted by: shrikantmantri | February 3, 2010

Virtual profiling: a new way to analyse phenotypes.

via Plant Journal on 2/2/10

Publication Date: 2010 Jan 25 PMID: 20113443
Authors: Genard, M. – Bertin, N. – Gautier, H. – Lescourret, F. – Quilot, B.
Journal: Plant J

Summary Simulation models can be used to perform virtual profiling in order to analyse ecophysiological processes controlling plant phenotype. To illustrate our purpose, an ecophysiological model has been used to compare and contrast the state of a virtual fruit system in two situations of carbon supply. The model which simulates the fruit growth, sugar, citric acid and water accumulation, transpiration, respiration and ethylene emission, was successfully tested on peach (Prunus persica L. Batsch) for two leaf to fruit ratios (6 and 18 leaves per fruit). The development stage and the variation in leaf number triggered large effects of the fruit model variables dealing with growth, metabolism and fruit quality. A sensitivity analysis showed that changing single parameter value, which could correspond to a genotypic change induced by a mutation, can either strongly affect most of the processes, or affect a specific process or none. Correlation analysis showed that in a complex system such as fruit, the intensity of many physiological processes and quality traits covary. It also showed that unexpected covariations came out, resulting from complex emergent properties of the system. Such a virtual profiling approach opens new route to explore the impact of mutations, or naturally occurring genetic variations, under differing environmental conditions.

post to: CiteULike

Posted via email from Sharing significant bytes —(Shrikant Mantri)


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