Proteomics

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Guard cell proteome - Dawn regulates guard cell proteins in Arabidopsis thaliana that function in ATP production from fatty acid beta-oxidation

ABSTRACT: Proteome changes that happen in the guard cells during dawn were up till now poorly described. Bad accessibility to pure and intact guard cell samples can be considered as the primary reason behind this lack of knowledge. By elucidating the identities of enzymes that change in abundance by the transition from dark to light, we corroborate the hypothesis that respiratory ATP production for stomatal opening results from fatty acid beta-oxidation.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Arabidopsis Thaliana (mouse-ear Cress)

TISSUE(S): Guard Cell

SUBMITTER: Sebastien Carpentier  

LAB HEAD: Sebastien Carpentier

PROVIDER: PXD009918 | Pride | 2018-11-07

REPOSITORIES: pride

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20150801_CMG_sample_02.raw Raw
20150801_CMG_sample_02.raw (F020522).mzid_20150801_CMG_sample_02.raw_(F020522).pride.mgf.gz Mzid
20150801_CMG_sample_02.raw (F020522).pride.mztab.gz Mztab
20150801_CMG_sample_02.rawF020522.mzid.gz Mzid
20150801_CMG_sample_02.rawF020522.mzid_20150801_CMG_sample_02.raw_F020522.MGF Mzid
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Dawn regulates guard cell proteins in Arabidopsis thaliana that function in ATP production from fatty acid beta-oxidation.

Geilfus Christoph-Martin CM   Lan Jue J   Carpentier Sebastien S  

Plant molecular biology 20181103 6

<h4>Key message</h4>Based on the nature of the proteins that are altered in abundance, we conclude that guard cells switch their energy source from fatty acid metabolism to chloroplast activity, at the onset of dawn. During stomatal opening at dawn, evidence was recently presented for a breakdown and liquidation of stored triacylglycerols in guard cells to supply ATP for use in stomatal opening. However, proteome changes that happen in the guard cells during dawn were until now poorly understood  ...[more]

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