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Analysis of the Arabidopsis Mitogen-Activated Protein Kinase families: organ specificity and transcriptional regulation upon water stresses  


Abstract Category: Science
Course / Degree: PhD
Institution / University: Institut des Sciences du Végétal/Paris-Sud XI, France
Published in: 2006


Thesis Abstract / Summary:

The Arabidopsis genome encodes for 20 MPKs, 10 MKKs, 60 MAP3Ks, and 10 MAP4K genes. The functions of corresponding proteins are still poorly characterized. To research possible functional MAP kinase modules involved in water stress signaling, original macroarrays were developed for their sensitivity and specificity. The expression patterns of MPKs and MKKs gene families, as well as selected key members of MAP3K and MAP4K families, were studied in relation to organ specificity and to various water stresses. Several kinases of the scarcely studied MPK group containing a TDY activation motif were induced by water stresses. There are four different MPKs (MPK9, MPK11, MPK17, and MPK18), among which three contain the TDY activation motif, and MKK9 and MAP3K6 are induced at transcriptional level by dehydration, salinity, and hyperosmolarity treatments. These genes may constitute MAP kinase key elements involved in water stress signalling.


Thesis Keywords/Search Tags:
MAP Kinase, Arabidopsis, water stress, osmotic stress, macroarray

This Thesis Abstract may be cited as follows:
Khaled Moustafa, Delphine Lefebvre-De Vos, Anne-Sophie Leprince, Arnould Savouré, and Christiane Laurière, “Analysis of the Arabidopsis Mitogen-Activated Protein Kinase Families: Organ Specificity and Transcriptional Regulation upon Water Stresses,” Scholarly Research Exchange, vol. 2008, Article ID 143656, 2008. doi:10.3814/2008/143656


Submission Details: Thesis Abstract submitted by Khaled Moustafa from France on 10-Nov-2010 04:20.
Abstract has been viewed 2237 times (since 7 Mar 2010).



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