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Identification of Brassica oleracea orthologs of the PEBP family and their expression patterns in curd development and flowering in cauliflower
Biotechnology & Biotechnological Equipment ( IF 1.4 ) Pub Date : 2020-01-01 , DOI: 10.1080/13102818.2020.1790418
Xiaoguang Sheng 1 , Zhenqing Zhao 1 , Jiansheng Wang 1 , Huifang Yu 1 , Yusen Shen 1 , Honghui Gu 1
Affiliation  

Abstract 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 in Brassica oleracea. In this study, 10 PEBP genes were identified in the B. oleracea genome. These genes were categorized as TFL1, FT and MFT subfamilies according to the phylogeny and gene structure analysis. All the 10 PEBP genes were randomly distributed on seven of the nine chromosomes in B. 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 that FT and TFL1 genes tend to be expressed in reproductive organs and at high levels in the meristem, whereas the MFT genes showed no or very low expression in all tested tissues. Notably, the five TFL1 genes might be sub-functionalized in cauliflower. Bol026421 and Bol032920 were specifically expressed in SAMbr, maintaining the indeterminate growth of shoot apical meristem, whereas the other three genes (Bol015337, Bol005471 and Bol010027) were highly expressed in curd stages. Highly expressed TFL1 group 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.

中文翻译:

PEBP家族甘蓝直系同源物的鉴定及其在花椰菜花球发育和开花中的表达模式

摘要 据报道,PEBP 家族成员在植物开花和生殖器官形成中起重要作用。然而,该基因家族尚未在甘蓝中得到鉴定,也未对其功能进行分析。在这项研究中,在甘蓝基因组中鉴定了 10 个 PEBP 基因。根据系统发育和基因结构分析,这些基因被归类为TFL1、FT和MFT亚家族。所有 10 个 PEBP 基因随机分布在甘蓝的 9 条染色体中的 7 条上。通过定量实时聚合酶链反应 (qRT-PCR) 评估了 10 个 PEBP 基因在花椰菜不同组织中的表达谱,我们发现 FT 和 TFL1 基因倾向于在生殖器官中表达,并在生殖器官中高水平表达。分生组织,而 MFT 基因在所有测试组织中均无表达或表达极低。值得注意的是,这五个 TFL1 基因可能在花椰菜中被亚功能化。Bol026421 和 Bol032920 在 SAMbr 中特异性表达,维持茎尖分生组织的不确定生长,而其他三个基因(Bol015337、Bol005471 和 Bol010027)在凝乳阶段高表达。高表达的TFL1组基因和促开花基因(FT,TSF)的mRNA水平低,可能是花椰菜凝乳形成的重要原因之一。总的来说,本研究获得的结果将有助于进一步研究 PEBP 基因在花球发育和开花开始过程中的作用,从而促进作物改良。Bol026421 和 Bol032920 在 SAMbr 中特异性表达,维持茎尖分生组织的不确定生长,而其他三个基因(Bol015337、Bol005471 和 Bol010027)在凝乳阶段高表达。高表达的TFL1组基因和促开花基因(FT,TSF)的mRNA水平低,可能是花椰菜凝乳形成的重要原因之一。总的来说,本研究获得的结果将有助于进一步研究 PEBP 基因在花球发育和开花开始过程中的作用,从而促进作物改良。Bol026421 和 Bol032920 在 SAMbr 中特异性表达,维持茎尖分生组织的不确定生长,而其他三个基因(Bol015337、Bol005471 和 Bol010027)在凝乳阶段高表达。高表达的TFL1组基因和促开花基因(FT,TSF)的mRNA水平低,可能是花椰菜凝乳形成的重要原因之一。总的来说,本研究获得的结果将有助于进一步研究 PEBP 基因在花球发育和开花开始过程中的作用,从而促进作物改良。高表达的TFL1组基因和促开花基因(FT、TSF)的mRNA水平低,可能是花椰菜凝乳形成的重要原因之一。总的来说,本研究获得的结果将有助于进一步研究 PEBP 基因在花球发育和开花开始过程中的作用,从而促进作物改良。高表达的TFL1组基因和促开花基因(FT,TSF)的mRNA水平低,可能是花椰菜凝乳形成的重要原因之一。总的来说,本研究获得的结果将有助于进一步研究 PEBP 基因在花球发育和开花开始过程中的作用,从而促进作物改良。
更新日期:2020-01-01
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