Systematic analysis of the OFP genes in six Rosaceae genomes and their roles in stress response in Chinese pear ( Pyrus
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RESEARCH ARTICLE
Systematic analysis of the OFP genes in six Rosaceae genomes and their roles in stress response in Chinese pear (Pyrus bretschneideri) Baopeng Ding1 • Chaohui Hu1 • Xinxin Feng1 • Tingting Cui1 • Yi Liu1 Liulin Li1
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Received: 15 July 2020 / Revised: 4 August 2020 / Accepted: 13 August 2020 Ó Prof. H.S. Srivastava Foundation for Science and Society 2020
Abstract OVATE family proteins (OFPs) are the plantspecific transcription factors, and have significant functions in regulating plant growth, development and resistance. The OFP genes have been investigated in several plants, but they still lack a systematic analysis of OFP genes in Chinese pear and some other five Rosaceae genomes. Here, 28 PbrOFPs were identified within Chinese pear and compared them with those of other five Rosaceae genomes. Evolutionary tree revealed that all OFP genes from six Rosaceae genomes were divided into eight groups. Seventeen conserved microsynteny regions were detected in Chinese pear genome, suggested that these PbrOFP genes might be considered to have originated from the large-scale duplication events., indicating these PbrOFP genes might contain specialized regulatory mechanisms in these tissues, such as flower, ovary and fruit. Remarkably, two PbrOFP genes (Pbr010426.1 and Pbr010427.1) were up-regulated under Venturia nashicola treatment, and five PbrOFP genes were up-regulated under PEG treatment, suggesting that these genes might play crucial roles in defence to environmental stresses. Our data presented a systematic analysis and might aid in the selection of appropriate PbrOFPs for further functional studies in Chinese pear, especially in response to the mechanism of biotic and abiotic stresses.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12298-020-00866-3) contains supplementary material, which is available to authorized users. & Liulin Li [email protected] 1
College of Horticulture, Shanxi Agriculture University, Jinzhong, China
Keywords OFPs Chinese pear Expression Microsynteny
Introduction OVATE family protein (OFP), a novel plant-specific transcription factor, belongs to plant growth inhibitory protein and plays important roles in regulating plant growth and development due to a conserved OVATE domain (also known as DUF623) in its C-terminal (Liu et al. 2002; Wang et al. 2007; Wang et al. 2011). OVATE was identified for the first time as a quantitative trait locus, which mainly controls the shape of tomato fruit, and it can also negatively regulate the growth and development of tomato leaves flowers (Liu et al. 2002; Wang et al. 2007; Wang et al. 2011). Recently, many OFPs have been cloned and identified in Arabidopsis, rice and tomato, etc. A total of 18, 31 and 31 of the OFP family members exists in the genomes of Arabidopsis, rice and tomato, respectively, which exert vital effects on plant growth and development (Huang et al. 2013; Yu et al. 2015). Among them, most AtOFPs play a transcriptional inhibitory role in Arabidopsis transient
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