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Interactome analysis of the six cotton 14-3-3s that are preferentially expressed in fibres and involved in cell elongation

Identifieur interne : 001B42 ( Main/Exploration ); précédent : 001B41; suivant : 001B43

Interactome analysis of the six cotton 14-3-3s that are preferentially expressed in fibres and involved in cell elongation

Auteurs : Ze-Ting Zhang [République populaire de Chine] ; Ying Zhou [République populaire de Chine] ; Yang Li [République populaire de Chine] ; Su-Qiang Shao [République populaire de Chine] ; Bing-Ying Li [République populaire de Chine] ; Hai-Yan Shi [République populaire de Chine] ; Xue-Bao Li [République populaire de Chine]

Source :

Journal of Experimental Botany [ 0022-0957 ] ; 2010-07.

RBID : ISTEX:2B41C9AEFD412F466CE01E658FD4BE65B50C6500

Abstract

Proteins of the 14-3-3 family regulate a divergent set of signalling pathways in all eukaryotic organisms. In this study, several cDNAs encoding 14-3-3 proteins were isolated from a cotton fibre cDNA library. The Gh14-3-3 genes share high sequence homology at the nucleotide level in the coding region and at the amino acid level. Real-time quantitative RT-PCR analysis indicated that the expression of these Gh14-3-3 genes is developmentally regulated in fibres, and reached their peak at the stage of rapid cell elongation of fibre development. Furthermore, overexpression of Gh14-3-3a, Gh14-3-3e, and Gh14-3-3L in fission yeast promoted atypical longitudinal growth of the host cells. Yeast two-hybrid analysis revealed that the interaction between cotton 14-3-3 proteins is isoform selective. Through yeast two-hybrid screening, 38 novel interaction partners of the six 14-3-3 proteins (Gh14-3-3a, Gh14-3-3e, Gh14-3-3f, Gh14-3-3g, Gh14-3-3h, and Gh14-3-3L), which are involved in plant development, metabolism, signalling transduction, and other cellular processes, were identified in cotton fibres. Taking these data together, it is proposed that the Gh14-3-3 proteins may participate in regulation of fibre cell elongation. Thus, the results of this study provide novel insights into the 14-3-3 signalling related to fibre development of cotton.

Url:

DOI: 10.1093/jxb/erq155

Affiliations:

République populaire de Chine

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<front><div type="abstract">Proteins of the 14-3-3 family regulate a divergent set of signalling pathways in all eukaryotic organisms. In this study, several cDNAs encoding 14-3-3 proteins were isolated from a cotton fibre cDNA library. The Gh14-3-3 genes share high sequence homology at the nucleotide level in the coding region and at the amino acid level. Real-time quantitative RT-PCR analysis indicated that the expression of these Gh14-3-3 genes is developmentally regulated in fibres, and reached their peak at the stage of rapid cell elongation of fibre development. Furthermore, overexpression of Gh14-3-3a, Gh14-3-3e, and Gh14-3-3L in fission yeast promoted atypical longitudinal growth of the host cells. Yeast two-hybrid analysis revealed that the interaction between cotton 14-3-3 proteins is isoform selective. Through yeast two-hybrid screening, 38 novel interaction partners of the six 14-3-3 proteins (Gh14-3-3a, Gh14-3-3e, Gh14-3-3f, Gh14-3-3g, Gh14-3-3h, and Gh14-3-3L), which are involved in plant development, metabolism, signalling transduction, and other cellular processes, were identified in cotton fibres. Taking these data together, it is proposed that the Gh14-3-3 proteins may participate in regulation of fibre cell elongation. Thus, the results of this study provide novel insights into the 14-3-3 signalling related to fibre development of cotton.</div>
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Interactome analysis of the six cotton 14-3-3s that are preferentially expressed in fibres and involved in cell elongation

Interactome analysis of the six cotton 14-3-3s that are preferentially expressed in fibres and involved in cell elongation

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