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Int. J. Mol. Sci. 2017, 18(4), 818; doi:10.3390/ijms18040818

Genome-Wide Analyses of the Soybean F-Box Gene Family in Response to Salt Stress

1
Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Jinshan, Fuzhou 350002, China
2
School of Life Sciences and Center for Soybean Research of the Partner State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
*
Author to whom correspondence should be addressed.
Academic Editor: Marcello Iriti
Received: 3 March 2017 / Revised: 3 April 2017 / Accepted: 4 April 2017 / Published: 12 April 2017
(This article belongs to the Special Issue Pulses)
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Abstract

The F-box family is one of the largest gene families in plants that regulate diverse life processes, including salt responses. However, the knowledge of the soybean F-box genes and their roles in salt tolerance remains limited. Here, we conducted a genome-wide survey of the soybean F-box family, and their expression analysis in response to salinity via in silico analysis of online RNA-sequencing (RNA-seq) data and quantitative reverse-transcription polymerase chain reaction (qRT-PCR) to predict their potential functions. A total of 725 potential F-box proteins encoded by 509 genes were identified and classified into 9 subfamilies. The gene structures, conserved domains and chromosomal distributions were characterized. There are 76 pairs of duplicate genes identified, including genome-wide segmental and tandem duplication events, which lead to the expansion of the number of F-box genes. The in silico expression analysis showed that these genes would be involved in diverse developmental functions and play an important role in salt response. Our qRT-PCR analysis confirmed 12 salt-responding F-box genes. Overall, our results provide useful information on soybean F-box genes, especially their potential roles in salt tolerance. View Full-Text
Keywords: soybean; F-box gene family; expression patterns; salt stress soybean; F-box gene family; expression patterns; salt stress
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Jia, Q.; Xiao, Z.-X.; Wong, F.-L.; Sun, S.; Liang, K.-J.; Lam, H.-M. Genome-Wide Analyses of the Soybean F-Box Gene Family in Response to Salt Stress. Int. J. Mol. Sci. 2017, 18, 818.

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