Whole-genome Identification and Evolutionary Analysis of Cabbage NLR Family Genes and Their Expression Profiles in Response to Various Disease Stress

doi:10.16420/j.issn.0513-353x.2018-0804

ACTA HORTICULTURAE SINICA ›› 2019, Vol. 46 ›› Issue (4): 723-737.doi: 10.16420/j.issn.0513-353x.2018-0804

• Research Papers • Previous Articles Next Articles

Whole-genome Identification and Evolutionary Analysis of Cabbage NLR Family Genes and Their Expression Profiles in Response to Various Disease Stress

XING Miaomiao，LIU Xing，KONG Congcong，YANG Limei，ZHUANG Mu，ZHANG Yangyong，WANG Yong，FANG Zhiyuan*，and Lü Honghao*

Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences；Key Laboratory of Biology and Genetic Improvement of Horticultural Crops，Ministry of Agriculture，Beijing 100081，China

Online:2019-04-25 Published:2019-04-25

Abstract

Abstract:

In this study，based on the reference genome we identified 87 NLR family genes in Brassica oleracea and performed evolution，comparative，and expression analysis. Gene structures and motif composition analysis indicated that the 87 NLR genes were assigned to five subclasses：NB-LRR（34），CC-NB-LRR（6），TIR-NB-LRR（45），RPW8-NB-LRR（1）and CC-TIR-NB-LRR（1）. Chromosome location analysis revealed that the NLR genes were unevenly distributed in single or in clusters on nine chromosomes. Evolution analysis showed that 35 NLR genes were homologous with Chinese cabbage，while the other 52 genes were specific to cabbage. Expression profiling of NLR genes identified several differential expression genes related to resistance to Fusarium wilt，black rot，clubroot，downy mildew and powdery mildew in Brassica oleracea，and results showed that expression of NLR genes participating in resistance response to various diseases exhibited significant difference，which may indicate the specific recognition of NLR genes for diverse pathogens.

Key words: Brassica oleracea, NLR family gene, resistance, expression profiling, Capsicum spp., origin, cultivated species, China, spread, industrial function

CLC Number:

S 635

XING Miaomiao，LIU Xing，KONG Congcong，YANG Limei，ZHUANG Mu，ZHANG Yangyong，WANG Yong，FANG Zhiyuan*，and Lü Honghao*. Whole-genome Identification and Evolutionary Analysis of Cabbage NLR Family Genes and Their Expression Profiles in Response to Various Disease Stress[J]. ACTA HORTICULTURAE SINICA, 2019, 46(4): 723-737.

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Whole-genome Identification and Evolutionary Analysis of Cabbage NLR Family Genes and Their Expression Profiles in Response to Various Disease Stress

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