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Transcriptomic analysis provides insight into defensive strategies in response to continuous cropping in strawberry (Fragaria x ananassa Duch.) plants

文献类型： 外文期刊

作者： Chen, Peng 1 ; Li, He-qin 3 ; Li, Xing-yue 4 ; Zhou, Xian-hong 1 ; Zhang, Xiu-xia 1 ; Zhang, An-sheng 1 ; Liu, Qi-zhi 2 ;

作者机构： 1.Shandong Acad Agr Sci, Inst Plant Protect, Shandong Prov Engn Technol Res Ctr Biocontrol Cro, Minist Agr & Rural Affairs,Key Lab Nat Enemies In, Jinan 250100, Peoples R China

2.China Agr Univ, Coll Plant Protect, Lab Entomol & Nematol, Beijing 100193, Peoples R China

3.Qingdao Agr Univ, Coll Agron, Shandong Prov Key Lab Dryland Technol, Qingdao 266109, Peoples R China

4.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Peoples R China

关键词： Continuous cropping; WRKY transcription factor; Peroxidase; Salicylic acid

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.26； 五年影响因子：5.761 ）

ISSN： 1471-2229

年卷期： 2022 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background Strawberries are an important economic fruit crop world-wide. In strawberry cultivation, continuous cropping (CC) can seriously threaten yield and quality. However, our understanding of the gene expression changes in response to CC and during subsequent defense processes is limited. In this study, we analyzed the impact of CC on the transcriptome of strawberry roots using RNA-Seq technology to elucidate the effect of CC and the subsequent molecular changes. Results We found that CC significantly affects the growth of strawberry plants. The transcriptome analysis identified 136 differentially expressed genes (DEGs), including 49 up-regulated and 87 down-regulated DEGs. A Gene Ontology (GO) analysis indicated that the up-regulated DEGs were mainly assigned to defense-related GO terms, and most down-regulated DEGs were assigned to nutrient-related GO terms. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that the responsive DEGs were classified in a large number of important biological pathways, such as phenylalanine metabolism, starch and sucrose metabolism, phenylpropanoid biosynthesis, glutathione metabolism and plant-pathogen interaction. We also found that four WRKY transcription factors and three peroxidase genes involved in plant defense pathways were up-regulated in the roots of strawberry plants subjected to CC. Conclusion Several unigenes involved in plant defense processes, such as CNGCs, WRKY transcription factors, PR1, and peroxidase genes with highly variable expression levels between non-CC and CC treatments may be involved in the regulation of CC in strawberry. These results indicate that strawberry roots reallocate development resources to defense mechanisms in response to CC. This study will further deepen our understanding of the fundamental regulatory mechanisms of strawberry resource reallocation in response to CC.

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