A member of the TERMINAL FLOWER 1/CENTRORADIALIS gene family controls sprout growth in potato tubers

Potato tuber bud dormancy break followed by premature sprouting is a major commercial problem which results in quality losses and decreased tuber marketability. An approach to controlling premature tuber sprouting is to develop potato cultivars with a longer dormancy period and/or reduced rate of sp...

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 70(2019), 3 vom: 05. Feb., Seite 835-843
1. Verfasser:	Morris, Wayne L (VerfasserIn)
Weitere Verfasser:	Alamar, M Carmen, Lopez-Cobollo, Rosa M, Castillo Cañete, Javier, Bennett, Mark, Van der Kaay, Jeroen, Stevens, Jennifer, Kumar Sharma, Sanjeev, McLean, Karen, Thompson, Andrew J, Terry, Leon A, Turnbull, Colin G N, Bryan, Glenn J, Taylor, Mark A
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Plant Proteins

Beschreibung
Zusammenfassung:	Potato tuber bud dormancy break followed by premature sprouting is a major commercial problem which results in quality losses and decreased tuber marketability. An approach to controlling premature tuber sprouting is to develop potato cultivars with a longer dormancy period and/or reduced rate of sprout growth. Our recent studies using a potato diploid population have identified several quantitative trait loci (QTLs) that are associated with tuber sprout growth. In the current study, we aim to characterize a candidate gene associated with one of the largest effect QTLs for rapid tuber sprout growth on potato chromosome 3. Underlying this QTL is a gene encoding a TERMINAL FLOWER 1/CENTRORADIALIS homologue (PGSC0003DMG400014322). Here, we use a transgenic approach to manipulate the expression level of the CEN family member in a potato tetraploid genotype (cv. Désirée). We demonstrate a clear effect of manipulation of StCEN expression, with decreased expression levels associated with an increased rate of sprout growth, and overexpressing lines showing a lower rate of sprout growth than controls. Associated with different levels of StCEN expression were different levels of abscisic acid and cytokinins, implying a role in controlling the levels of plant growth regulators in the apical meristem
Beschreibung:	Date Completed 28.01.2020 Date Revised 09.03.2020 published: Print Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/ery387