Stochastic gene expression in Arabidopsis thaliana.

Stochastic gene expression in Arabidopsis thaliana.
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DOI:
10.1038/s41467-017-02285-7
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发表时间:
2017-12-14
影响因子:
16.6
通讯作者:
Hülskamp M
Hülskamp M
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Araújo IS;Pietsch JM;Keizer EM;Greese B;Balkunde R;Fleck C;Hülskamp M

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Although plant development is highly reproducible, some stochasticity exists. This developmental stochasticity may be caused by noisy gene expression. Here we analyze the fluctuation of protein expression in Arabidopsis thaliana. Using the photoconvertible KikGR marker, we show that the protein expressions of individual cells fluctuate over time. A dual reporter system was used to study extrinsic and intrinsic noise of marker gene expression. We report that extrinsic noise is higher than intrinsic noise and that extrinsic noise in stomata is clearly lower in comparison to several other tissues/cell types. Finally, we show that cells are coupled with respect to stochastic protein expression in young leaves, hypocotyls and roots but not in mature leaves. Our data indicate that stochasticity of gene expression can vary between tissues/cell types and that it can be coupled in a non-cell-autonomous manner. Noisy gene expression can cause stochasticity in the expression of plant traits. Here, Araújo et al. use a dual reporter system of protein expression in Arabidopsis to show that expression noise is lowest in stomata relative to other tissues and that leaf cells are coupled with respect to noise.
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