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Characterization of the pumpkin Translationally-Controlled Tumor Protein CmTCTP.

Authors :
Hinojosa-Moya JJ
Xoconostle-Cázares B
Toscano-Morales R
Ramírez-Ortega F
Cabrera-Ponce JL
Ruiz-Medrano R
Source :
Plant signaling & behavior [Plant Signal Behav] 2013; Vol. 8 (12), pp. e26477. Date of Electronic Publication: 2013 Sep 24.
Publication Year :
2013

Abstract

In higher plants, the phloem plays a central role in the delivery of nutrients and signals from source to sink tissues. These signals likely coordinate different aspects of plant development, as well as its response to environmental cues. Although some phloem-transported proteins and RNAs may function as signaling molecules in plants, their mode of action remains poorly understood. Previous analysis of transcripts from CMV-infected pumpkin (Cucurbita maxima cv Big Max) identified a Translationally-Controlled Tumor Protein (TCTP) mRNA homolog, designated CmTCTP. In the present work this transcript was analyzed in terms of its expression pattern. This RNA accumulates, both in healthy and CMV-infected plants, in developing and mature phloem in petiole and roots, as well as in apices at high levels. The protein was present at lower levels in most cell types, and almost no signal was detected in apices, suggesting translational regulation of this RNA. Additionally, CmTCTP harbored by Agrobacterium rhizogenes is capable of inducing whole plant regeneration. These data suggest a role for CmTCTP in growth regulation, possibly through long-distance signaling.

Details

Language :
English
ISSN :
1559-2324
Volume :
8
Issue :
12
Database :
MEDLINE
Journal :
Plant signaling & behavior
Publication Type :
Academic Journal
Accession number :
24065051
Full Text :
https://doi.org/10.4161/psb.26477