Genome-Wide Analysis of Multiple Organellar RNA Editing Factor Family in Poplar Reveals Evolution and Roles in Drought Stress

Overview

Journal Int J Mol Sci

Publisher MDPI

Specialties Biochemistry
Chemistry
Molecular Biology

Date 2019 Mar 24

PMID 30901839

Citations 12

Authors

Dongli Wang

Sen Meng

Wanlong Su

Yu Bao

Yingying Lu

Weilun Yin

Chao Liu

Xinli Xia

Affiliations

Soon will be listed here.

Abstract

Poplar (Populus) is one of the most important woody plants worldwide. Drought, a primary abiotic stress, seriously affects poplar growth and development. Multiple organellar RNA editing factor () genes-pivotal factors in the RNA editosome in -are indispensable for the regulation of various physiological processes, including organelle C-to-U RNA editing and plasmid development, as well as in the response to stresses. Although the poplar genome sequence has been released, little is known about genes in poplar, especially those involved in the response to drought stress at the genome-wide level. In this study, we identified nine genes in the Populus genome. Based on the structural features of MORF proteins and the topology of the phylogenetic tree, the (Ptr) MORF family members were classified into six groups (Groups I⁻VI). A microsynteny analysis indicated that two (22.2%) genes were tandemly duplicated and seven genes (77.8%) were segmentally duplicated. Based on the ratios, purifying selection likely played a major role in the evolution of this family and contributed to functional divergence among genes. Moreover, analysis of qRT-PCR data revealed that exhibited tissue- and treatment-specific expression patterns. genes in all group were involved in the stress response. These results provide a solid foundation for further analyses of the functions and molecular evolution of genes in poplar, and, in particular, for improving the drought resistance of poplar by genetics manipulation.

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