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中国农学通报 ›› 2020, Vol. 36 ›› Issue (32): 8-16.doi: 10.11924/j.issn.1000-6850.casb2020-0041

所属专题: 生物技术 园艺

• 农学·农业基础科学 • 上一篇    下一篇

盐胁迫下耐盐甜菜生理及其蛋白差异表达分析

文章1(), 耿贵1, 王宇光1, 孙菲2, 王皙玮1, 於丽华1()   

  1. 1黑龙江省普通高校甜菜遗传育种重点试验室/现代农业生态与环境学院,黑龙江大学,哈尔滨 150080
    2北海道大学,日本札幌 060-0808
  • 收稿日期:2020-04-25 修回日期:2020-06-09 出版日期:2020-11-15 发布日期:2020-11-19
  • 通讯作者: 於丽华
  • 作者简介:文章,女,1997年出生,贵州遵义人,本科在读,研究方向:农业资源与环境。通信地址:150080 黑龙江省哈尔滨市南岗区学府路74号 黑龙江大学,E-mail: 1309592486@qq.com
  • 基金资助:
    国家甜菜农业产业技术体系项目“甜菜种植制度”(CARS-210301);黑龙江省教育厅高校基本科研业务费专项资金项目“甜菜根系适应盐胁迫特有解剖结构变化的研究”(KJCX201919);黑龙江大学省级大学生创新创业训练计划项目“盐胁迫条件下盐敏感与耐盐甜菜根系显微结构差异的研究”(201910212186)

The Physiological and Proteomics Analysis of Salt-resistance Sugar Beet Under Salt Stress

Wen Zhang1(), Geng Gui1, Wang Yuguang1, Sun Fei2, Wang Xiwei1, Yu Lihua1()   

  1. 1Key Laboratory of Sugar Beet Genetic Breeding of Heilongjiang Province/College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
    2Hokkaido University, Sapporo Japan 060-0808
  • Received:2020-04-25 Revised:2020-06-09 Online:2020-11-15 Published:2020-11-19
  • Contact: Yu Lihua

摘要:

为了探究甜菜在盐胁迫条件下生长及蛋白差异表达的变化,本研究以耐盐甜菜‘T510’为试验材料,采用室内营养液培养的方式,分析了0、140、280 mmol/L NaCl胁迫条件下甜菜生理和蛋白组变化。结果表明:随着盐分浓度的升高,甜菜的干物质、胁迫指数、叶绿素含量明显降低。相反,丙二醛和可溶性蛋白含量明显升高。利用双向电泳分别在对照组、低盐组(140 mmol/L NaCl)、高盐组(280 mmol/L NaCl)中检测到514、579、562个蛋白点。在低盐-对照、高盐-对照和低盐-高盐中分别有17、40、21个差异表达蛋白(变化倍数>2,P<0.05)。通过质谱分析最终分别鉴定出12、23、11个差异表达蛋白。这些差异蛋白主要参与光合作用和物质代谢。同时,发现磷酸烯醇式丙酮酸羧化酶家族蛋白PEPC,Zn结合脱氢酶家族蛋白亚型1和ATP合酶的γ链在响应盐胁迫过程中表达量变化较大。因此,对于耐盐甜菜来说,盐胁迫主要影响与光合作用和物质代谢相关的蛋白表达,其中磷酸烯醇式丙酮酸羧化酶家族蛋白PEPC、Zn结合脱氢酶家族蛋白亚型1和ATP合酶的γ链的作用明显。以上这些发现为甜菜及其他作物的耐盐育种提供有价值的理论依据。

关键词: 盐胁迫, 甜菜, 生理生化, 双向电泳

Abstract:

The aim is to explore the growth and proteomics difference of sugar beet under salt stress. In hydroponics indoor, the salt tolerant beet‘T510’was used as the experimental material, and the differences of physiological index and proteome of sugar beet were analyzed in the nutrition solution with 0, 140 and 280 mmol/L NaCl stress. The results showed that the dry matter, stress index and chlorophyll content significantly decreased along with the increase of salt concentration. In contrast, the content of malondialdehyde and soluble protein were significantly increased. A total of 514, 579 and 562 proteins were detected in the control, low salt treatment (140 mmol/L NaCl) and high salt treatment (280 mmol/L NaCl), respectively. There were 17, 40 and 21 significantly changed proteins (fold change > 2 and P value < 0.05) found between control vs. low salt treatment, control vs. high salt stress and low salt treatment vs. high salt treatment, respectively. By mass spectrometry, 12, 23 and 11 differential expression proteins were successfully identified. These proteins were mainly involved in photosynthesis and material metabolism. In addition, we found the abundance of PEPC, Zn-binding dehydrogenase family protein isoform 1 and ATP synthase gamma chain had a high level of fold change in response to salt stress. Therefore, for salt tolerant sugar beet, salt stress mainly affects the protein expression related to photosynthesis and material metabolism, in which PEPC, Zn binding dehydrogenase family protein subtype 1 and γ chain of ATPase play an important role. These results could present a theoretical basis for salt tolerance breeding of sugar beet and other crops.

Key words: salt stress, sugar beet, physiology and biochemistry, dimensional electrophoresis

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