https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
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https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
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https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2022, Vol. 49 ›› Issue (10): 2223-2235.doi: 10.16420/j.issn.0513-353x.2022-0423

• 研究论文 • 上一篇    下一篇

苹果磷酸果糖激酶基因MdPFPβ调控果实可溶性糖积累的功能

于建强1,2, 顾凯迪1, 王传增3,**(), 胡大刚1,**()   

  1. 1山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,山东泰安 271018
    2扬州大学园艺与植物保护学院,江苏扬州 225009
    3山东省农业科学院黄河三角洲现代农业研究院,山东东营 257000
  • 收稿日期:2022-04-18 修回日期:2022-07-27 出版日期:2022-10-25 发布日期:2022-10-31
  • 通讯作者: 王传增,胡大刚 E-mail:fap_296566@163.com;dazeng123321@163.com
  • 基金资助:
    国家自然科学基金项目(32122080);国家自然科学基金项目(31972375);山东省自然科学基金项目(ZR2020YQ25);国家重点研发计划项目(2018YFD1000200)

Functional Characterization of An Apple Pyrophosphate-dependent Phosphofructokinase Gene MdPFPβ in Regulating Soluble Sugar Accumulation

YU Jianqiang1,2, GU Kaidi1, WANG Chuanzeng3,**(), HU Dagang1,**()   

  1. 1State Key Laboratory of Crop Biology,College of Horticultural Science and Engineering,Shandong Agricultural University,Tai'an,Shandong 271018,China
    2College of Horticulture and Plant Protection,Yangzhou University,Yangzhou,Jiangsu 225009,China
    3Modern Agriculture Research Institute of Yellow River Delta,Shandong Academy of Agricultural Sciences,Dongying,Shandong 257000,China
  • Received:2022-04-18 Revised:2022-07-27 Online:2022-10-25 Published:2022-10-31
  • Contact: WANG Chuanzeng,HU Dagang E-mail:fap_296566@163.com;dazeng123321@163.com

摘要:

为阐明苹果(Malus × domestica Borkh.)磷酸果糖激酶基因MdPFPβ(Pyrophosphate-fructose 6-phosphate 1-phosphotransferase subunit beta,基因序列号MD09G1112800)的生物学功能,首先分析了基因启动子和全长序列信息,该基因包含全长为483 bp完整的开放阅读框,编码161个氨基酸。利用PlantCare数据库进行基因启动子顺式作用元件分析发现,MdPFPβ启动子序列中含有与脱落酸(abscisic acid,ABA)、低温及干旱信号相关的调控元件。荧光定量PCR分析发现,MdPFPβ在苹果叶片和成熟果实中表达量较高,并且受外源ABA的诱导表达。在外施ABA的条件下,MdPFPβ过量表达的苹果愈伤组织中可溶性糖含量明显上升。此外,MdPFPβ转基因番茄植株的光合性能增强,MdPFPβ可能通过调控糖代谢酶的活性最终影响果实中的可溶性糖含量。

关键词: 苹果, MdPFPβ, 可溶性糖, 脱落酸

Abstract:

To elucidate the biological function of the apple(Malus × domestica Borkh.)phospho- fructokinase gene MdPFPβ(Pyrophosphate-fructose 6-phosphate 1-phosphotransferase subunit beta,gene sequence number MD09G1112800),its sequence and promoter information were analyzed. The results showed that its open reading frame was 483 bp in length,encoding 161 amino acids. Cis-acting element analysis of its promoter using the PlantCare database revealed that regulatory elements related to abscisic acid(ABA),low temperature,and drought signaling were present in the promoter sequence of MdPFPβ. Quantitative real-time PCR analysis revealed that MdPFPβ was highly expressed in apple leaves and mature fruits. It was also induced by external application of ABA in apple leaves. Overexpressing MdPFPβ significantly increased soluble sugar content in apple calli compared to that in wild-type under ABA treatment. Moreover,ectopic expression of MdPFPβ promoted photosynthetic performance in tomato leaves,as well as the content of soluble sugar in tomato fruits,indicating MdPFPβ plays a key role in regulating soluble sugar content in fruits.

Key words: apple, MdPFPβ, soluble sugar, abscisic acid

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