Genome-wide identification, phylogenetic and expression analysis of SMAX1-Like genes in rapeseed (Brassica napus L.)

Hongli Yang; Xiaokang Li; Jinglin Liu; Hongfang Liu; Wei Hua; Ming Zheng

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Genome-wide identification, phylogenetic and expression analysis of SMAX1-Like genes in rapeseed (Brassica napus L.)

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SMAX1-LIKE (SMXL) family members have played important roles in regulat-ing plant growth and development in Arabidopsis and rice, but few have been studied in Brassica napus (rapeseed). In this study, 31 SMXL genes (BnaSMXL) were identified in rapeseed by whole genome bioinformatics. Detailed information were characterized, includ-ing genomic distribution, phylogenetic relationship, evolutionary selection pattern, struc-tural and motif features. Phylogenetic analysis classified BnaSMXL genes into 4 distinct sub-clades representing clear orthologous relationships to their family members in Arabi-dopsis and rice. Conserved motif analysis indicated that the motif 16 mediating strigolac-tones (SLs) or karrikins (KARs) signaling was absent in SMXL3-5 genes. Orthologous gene pairs between Arabidopsis and 3 Brassica species were extracted, and 8 SMXL genes in Arabidopsis genome had 16, 16 and 31 corresponding genes in B. oleracea, B. rapa and rapeseed genomes respectively. Evolutionary selection pattern showed that most of SMXL genes had undergone stronger negative selection. BnaSMXLs expression showed diverse patterns in 10 tissues of both vegetative and reproductive organs. Subcellular localization analysis showed that BnaSMXL proteins were exclusively localized in nucleus.

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《中国油料作物学报（英文）》 |2018年第002期|71-85|共15页
作者
Hongli Yang; Xiaokang Li; Jinglin Liu; Hongfang Liu; Wei Hua; Ming Zheng;
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作者单位

Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China;

Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China;

College of Life Science, Hubei University, Wuhan, China;

Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China;

Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China;

Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China;

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Genome-wide identification, phylogenetic and expression analysis of SMAX1-Like genes in rapeseed (Brassica napus L.)

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