冠菌素对番茄防御基因表达、胼胝质沉积及细菌生长的影响

doi:10.16036/j.issn.1000-2650.2021.01.005

四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (1): 27-34.doi: 10.16036/j.issn.1000-2650.2021.01.005

冠菌素对番茄防御基因表达、胼胝质沉积及细菌生长的影响

张镇川¹, 何冰², 李甜¹, 靳亚忠^3*, 耿雪青^1*

1.上海交通大学农业与生物学院,上海 200240;
2.西宁市农产品质量安全检测中心,西宁 810016;
3.黑龙江八一农垦大学园艺园林学院,黑龙江大庆 163319

收稿日期:2020-12-23 出版日期:2021-02-28 发布日期:2021-03-05
作者简介:张镇川,硕士研究生。*责任作者:靳亚忠,博士,副教授,主要从事设施蔬菜栽培生理学研究,E-mail:jyz-hsp@126.com;耿雪青,博士,副研究员,主要从事番茄与不同病原物互作机制的研究,番茄逆境激素信号途径研究,E-mail:xqgeng@sjtu.edu.cn。
基金资助:
上海市科委一带一路国际交流合作项目:冠菌素介导番茄细菌性斑点病原菌对番茄的致病机理研究(19390743400)

The Effect of Coronatine on Tomato Defense Gene Expression,Callose Deposition and Bacterial Growth

ZHANG Zhenchuan¹, HE Bing², LI Tian¹, JIN Yazhong^3*, GENG Xueqing^1*

1. School of Agriculture and Biology,Shanghai Jiao Tong University, Dongchuan Road 800,Minhang District,Shanghai 200240,China;
2. Institute of Quality and Safety Testing Center for Agro-Products in Xining City,Biology District of Chengbei District,Xining 810016,China;
3. College of Hoticulture and Landscape Architectrue,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China

Received:2020-12-23 Online:2021-02-28 Published:2021-03-05

摘要/Abstract

摘要： 【目的】探究冠菌素(coronatine,COR)在丁香假单胞菌与番茄互作过程中的作用机理。【方法】以番茄品种Money maker为试验材料,用RT-qPCR法检测不同浓度COR注射番茄叶片之后防御基因表达量,利用苯胺蓝染色法观测叶片中不同菌株诱导的胼胝质沉积数目,采用稀释平板计数法检测细菌生长量。【结果】RT-qPCR结果显示高浓度COR处理番茄可诱导EIN2、EIN3、LoxD、MYC2、PAL5基因的高表达,抑制PR1a基因的表达;细菌生长测定结果显示野生型病原菌比COR缺失突变体在番茄叶片中的生长量高5倍;染色观测结果显示COR能够抑制番茄胼胝质的沉积。【结论】COR影响番茄激素信号途径,抑制胼胝质沉积,促进病原菌在番茄叶片中的生长。

关键词: 冠菌素, 丁香假单胞菌, 基因表达, 胼胝质, 细菌生长

Abstract: 【Objective】 To investigate the meachanism of coronatine (COR) function during Pseudomonas syringae and tomato interaction.【Method】 Using tomato variety Money maker as the test material,RT-qPCR was used to detect the expression of defense genes in tomato leaves after the injection of different concentrations of COR,and the aniline blue staining method was used to observe the number of callose deposits induced by different strains in leaves,using a series of dilution plate counting method detects bacterial growth.【Result】 RT-qPCR results showed that high concentration COR treatment could induce high expression of EIN2, EIN3,LoxD, MYC2, PAL5,and inhibited the expression of PR1a.the results of growth curve assays showed that wild-type pathogenic bacteria can obtain greater population density in tomato leaves than COR deletion mutants; staining observation results showed that COR could inhibit callose deposition.【Conclusion】 COR is involved in regulating the tomato hormone pathways,inhibiting callose deposition,and promoting the growth of pathogenic bacteria in tomato leaves.

Key words: coronatine, Pseudomonas syringae, defense genes, callose, bacterial growth

中图分类号:

S641.2

张镇川, 何冰, 李甜, 靳亚忠, 耿雪青. 冠菌素对番茄防御基因表达、胼胝质沉积及细菌生长的影响[J]. 四川农业大学学报, 2021, 39(1): 27-34.

ZHANG Zhenchuan, HE Bing, LI Tian, JIN Yazhong, GENG Xueqing. The Effect of Coronatine on Tomato Defense Gene Expression,Callose Deposition and Bacterial Growth[J]. Journal of Sichuan Agricultural University, 2021, 39(1): 27-34.

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冠菌素对番茄防御基因表达、胼胝质沉积及细菌生长的影响

The Effect of Coronatine on Tomato Defense Gene Expression,Callose Deposition and Bacterial Growth

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