https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
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https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2021, Vol. 48 ›› Issue (8): 1485-1503.doi: 10.16420/j.issn.0513-353x.2020-0595

• 研究论文 • 上一篇    下一篇

草莓LIM家族候选基因的鉴定及在非生物胁迫下的表达

张志强, 卢世雄, 马宗桓, 李彦彪, 高彩霞, 陈佰鸿, 毛娟()   

  1. 甘肃农业大学园艺学院,兰州 730070
  • 收稿日期:2021-01-22 修回日期:2021-04-06 出版日期:2021-08-25 发布日期:2021-09-06
  • 通讯作者: 毛娟 E-mail:maojuan-81@163.com
  • 基金资助:
    高等学校创新基因项目(2021B-142);甘肃省科技重大专项(18ZD2NA006);甘肃省现代农业产业技术体系建设专项资金项目(GARS-SG-3)

Bioinformatic Identification and Expression Analysis of Candidate Genes of LIM Protein Family in Strawberry Under Abiotic Stresses

ZHANG Zhiqiang, LU Shixiong, MA Zonghuan, LI Yanbiao, GAO Caixia, CHEN Baihong, MAO Juan()   

  1. College of Horticulture,Gansu Agricultural University,Lanzhou 730070,China
  • Received:2021-01-22 Revised:2021-04-06 Online:2021-08-25 Published:2021-09-06
  • Contact: MAO Juan E-mail:maojuan-81@163.com

摘要:

利用NCBI、GDR数据库对草莓LIM家族候选基因在草莓基因组水平进行生物信息学分析,鉴定获得4个亚族37个候选LIM基因,其中9个来自森林草莓(Fragaria vesca L.),28个来自凤梨草莓(F. ananassa Duch.)。草莓LIM家族候选基因主要分布在细胞核;其密码子偏好性较弱,偏向使用以A/T结尾的同义密码子。FvLIMFaLIM启动子序列上游2 kb区域包含大量激素及非生物胁迫响应元件。10% PEG、200 mmol · L-1 NaCl、4 ℃低温胁迫下,随着处理时间延长LIM家族候选基因在凤梨草莓‘红颜’中比森林草莓中上调趋势更明显。4 ℃低温处理下,森林草莓中以FvLIM5(12 h)和FvLIM7(24 h)上调最为明显,而凤梨草莓‘红颜’中以FaLIM25(12 h)和FaLIM18(24 h)上调最为显著,总体对低温响应较明显。实时荧光定量PCR分析结果表明,草莓LIM家族候选基因在不同组织中的表达量存在一定差异,在根和花中的表达量偏高。综合以上分析结果,预测草莓LIM家族候选基因可能在响应非生物胁迫以及根和花的发育中发挥重要作用。

关键词: 草莓, LIM家族, 生物信息学, qRT-PCR

Abstract:

In this paper,NCBI and GDR database were used to analyze the candidate genes of LIM family in strawberry genome,and 37 LIM genes could be divided into four subgroups,nine LIM genes were identified from Fragaria vescaL. and 28 LIM genes were identified from cultivated strawberry(F. ananassaDuch.). The LIM family candidate genes were mainly expressed in the nucleus. Their codon bias were less preferred and tended to use the synonymous codon ending in A/T. The upstream 2 kb region of promoter sequences of FvLIM and FaLIM contained a large number of hormone response elements and abiotic stress elements. The expression levels of LIM family candidate genes under 200 mmol · L-1 NaCl,10% PEG,and 4 ℃ low temperature,FaLIMwere more significantly up-regulated than FvLIM with the treatment time. Under 4 ℃ low temperature treatment,FvLIM5(12 h)and FvLIM7(24 h)were significantly up-regulated in F. vesca,FaLIM25(12 h)and FaLIM18(24 h)significantly up-regulated in F. ananassa‘Benihoppe’,the overall response to low temperature is obvious. The results of qRT-PCR showed that most of LIM family candidate genes were highly expressed in roots and flowers,their diverse and specific expression could be detected in five tissues. Based on the above analysis results,it was speculated that the LIM family candidate genes of strawberry might play an important role in abiotic stress and in roots and flowers development.

Key words: strawberry, LIM gene family, bioinformatics, qRT-PCR

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