Heterologous expression of AtPAP2 in transgenic potato influences carbon metabolism and tuber development
- Changes in carbon flow and sink/source activities can affect floral, architectural, and reproductive traits of plants. In potato, overexpression (OE) of the purple acid phosphatase 2 of Arabidopsis (AtPAP2) resulted in earlier flowering, faster growth rate, increased tubers and tuber starch content, and higher photosynthesis rate. There was a significant change in sucrose, glucose and fructose levels in leaves, phloem and sink biomass of the OE lines, consistent with an increased expression of sucrose transporter 1 (StSUT1). Furthermore, the expression levels and enzyme activity of sucrose-phosphate synthase (SPS) were also significantly increased in the OE lines. These findings strongly suggest that higher carbon supply from the source and improved sink strength can improve potato tuber yield. (C) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Author details: | Youjun Zhang, Feng Sun, Jörg FettkeORCiDGND, Mark Aurel Schoettler, Lawrence Ramsden, Alisdair FernieORCiDGND, Boon Leong Lim |
---|---|
DOI: | https://doi.org/10.1016/j.febslet.2014.08.019 |
ISSN: | 0014-5793 |
ISSN: | 1873-3468 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/25173632 |
Title of parent work (English): | FEBS letters : the journal for rapid publication of short reports in molecular biosciences |
Publisher: | Elsevier |
Place of publishing: | Amsterdam |
Publication type: | Article |
Language: | English |
Year of first publication: | 2014 |
Publication year: | 2014 |
Release date: | 2017/03/27 |
Tag: | AtPAP2; Photosynthesis; Potato; Sugar efflux; Tuber yield |
Volume: | 588 |
Issue: | 20 |
Number of pages: | 6 |
First page: | 3726 |
Last Page: | 3731 |
Funding institution: | General Research Fund of the HKSAR, China [HKU772710M] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
Peer review: | Referiert |