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Identification ofBrassica oleraceaorthologs of the PEBP family and their expression patterns in curd development and flowering in cauliflower

文献类型： 外文期刊

作者： Sheng, Xiaoguang 1 ; Zhao, Zhenqing 1 ; Wang, Jiansheng 1 ; Yu, Huifang 1 ; Shen, Yusen 1 ; Gu, Honghui 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Vegetables, Shiqiao Rd 198, Hangzhou 310021, Zhejiang, Peoples R China

关键词： PEBP gene family; B; oleracea; expression patterns; curd development

期刊名称：BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT （ 影响因子：1.632； 五年影响因子：2.029 ）

ISSN： 1310-2818

年卷期： 2020 年 34 卷 1 期

页码：

收录情况： SCI

摘要： The PEBP family members are reported to play important roles in plant flowering and reproductive organ formation. However, this gene family has not been identified nor their functions have been analyzed inBrassica oleracea. In this study, 10 PEBP genes were identified in theB. oleraceagenome. These genes were categorized asTFL1,FTandMFTsubfamilies according to the phylogeny and gene structure analysis. All the 10 PEBP genes were randomly distributed on seven of the nine chromosomes inB. oleracea. The expression profiles of the 10 PEBP genes in different tissues of cauliflower were evaluated through quantitative Real-Time polymerase chain reaction (qRT-PCR), and we found thatFTandTFL1genes tend to be expressed in reproductive organs and at high levels in the meristem, whereas theMFTgenes showed no or very low expression in all tested tissues. Notably, the fiveTFL1genes might be sub-functionalized in cauliflower.Bol026421andBol032920were specifically expressed in SAMbr, maintaining the indeterminate growth of shoot apical meristem, whereas the other three genes (Bol015337,Bol005471andBol010027) were highly expressed in curd stages. Highly expressedTFL1group genes with low mRNA levels of the flowering-promoting genes (FT,TSF), might be one of the important reasons of curd formation in cauliflower. Generally, the results obtained in this study will help further studies on the roles of PEBP genes during curd development and flowering initiation, leading to crop improvement.

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