Phylogenomic Analysis of the PEBP Gene Family from Kalanchoë

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Mackenzie, K.K.; Coelho, L.L.; Lütken, H.; Müller, R. Phylogenomic Analysis of the PEBP Gene Family from Kalanchoë. Agronomy 2019, 9, 171.

Title: Phylogenomic Analysis of the PEBP Gene Family from Kalanchoë
Author: Mackenzie, Kathryn Kuligowska; Coelho, Lívia Lopes; Lütken, Henrik; Müller, Renate
Publisher: Multidisciplinary Digital Publishing Institute
Date: 2019-03-30
Abstract: The <i>PEBP</i> family comprises proteins that function as key regulators of flowering time throughout the plant kingdom and they also regulate growth and plant architecture. Within the <i>PEBP</i> protein family, three subfamilies can be distinguished in angiosperms: MOTHER OF FT AND <i>TFL1</i>-like (MFT), FLOWERING LOCUS T-like (FT-like), and TERMINAL FLOWER1-like (<i>TFL1</i>-like). Taking advantage of the genome sequences available from <i>K. fedtschenkoi</i> and<i> </i><i>K. laxiflora</i>, we performed computational analysis to identify the members of the <i>PEBP</i> gene family in these species. The analyses revealed the existence of 11 <i>PEBP</i> genes in <i>K. fedtschenkoi</i> and 18 in <i>K. laxiflora</i>, which are clustered in two clades: <i>FT</i>-like and <i>TFL1</i>-like. The <i>PEBP</i> genes had conserved gene structure and the proteins had highly conserved amino acid sequences in the positions crucial for the protein functions. The analysis of Ka/Ks ratio revealed that most recently duplicated genes are under positive selection. Despite being an economically important genus, the genetics underlying the regulation of flowering in Kalancho&euml; is poorly understood. The results of this study may provide a new insight into the molecular control of flowering that will allow further studies on flowering control in Kalancho&euml;.

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