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中国农学通报 ›› 2024, Vol. 40 ›› Issue (4): 132-139.doi: 10.11924/j.issn.1000-6850.casb2023-0032

• 植物保护·农药 • 上一篇    下一篇

细菌性疫病对菜豆光合特性和生理指标的影响

李学庆(), 冯国军, 刘大军, 刘畅, 闫志山, 杨晓旭()   

  1. 黑龙江大学现代农业与生态环境学院,哈尔滨 150081
  • 收稿日期:2023-01-10 修回日期:2023-07-18 出版日期:2024-02-05 发布日期:2024-01-29
  • 通讯作者:
    杨晓旭,男,1988 年出生,吉林松原人,副研究员,博士,研究方向:蔬菜遗传育种与生物技术。通信地址:150006 黑龙江大学现代农业与生态环境学院农学楼331,E-mail:
  • 作者简介:

    李学庆,女,1999年出生,安徽肥东人,硕士,研究方向:寒区作物种质资源创新及利用。通信地址:150080 黑龙江省哈尔滨市南岗区学府路74号,E-mail:

  • 基金资助:
    黑龙江省自然科学基金“菜豆金黄色基因pv-ye克隆与功能鉴定”(2020-KYYWF-1027); 黑龙江省重点研发计划项目专项课题计划“主要蔬菜作物分子辅助育种决策与新品系培育研究”(SC2022ZX02C0202)

Effect of Bacterial Blight on Photosynthetic Characteristics and Physiological Indicators of Common Bean

LI Xueqing(), FENG Guojun, LIU Dajun, LIU Chang, YAN Zhishan, YANG Xiaoxu()   

  1. College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150081
  • Received:2023-01-10 Revised:2023-07-18 Published-:2024-02-05 Online:2024-01-29

摘要:

为研究菜豆侵染细菌性疫病后的一系列生理变化,以不同菜豆细菌性疫病抗性品种‘双丰3号’(SF,抗病品种)和‘猫眼’(MY,感病品种)为试验材料,测定接种后不同时段菜豆细菌性疫病对光合作用参数、光合色素含量、POD、SOD活性及超氧阴离子含量积累的影响。结果显示:(1)不同抗性品种间,除胞间CO2浓度增加外,2个品种的净光合速率、气孔导度、气孔限制值和水分利用效率均呈现下降状态,且增幅和降幅表现为MY>SF。(2)菜豆细菌性疫病侵染导致2个品种的叶绿素a、叶绿素b、总叶绿素和类胡萝卜素含量均有所下降,且总体含量表现为SF>MY。说明SF的光合作用和光合色素含量受菜豆细菌性疫病胁迫的影响小于MY。(3)MY的POD活性总体高出SF 3倍,SOD活性表现为SF>MY,且在超氧阴离子含量积累方面,SF的释放量比MY早2 d变少,其防御机制出现时间早于MY。说明维持较高的光合性能是对菜豆细菌性疫病具有较强抗性的生理基础,且POD和SOD活性都可以作为菜豆细菌性疫病的抗性鉴定生理指标。

关键词: 菜豆, 细菌性疫病, 光合色素, 光合特性, 生理生化指标

Abstract:

In order to study a series of physiological changes in common bean after infestation with bacterial blight, different bean bacterial blight resistant varieties, ‘Shuangfeng No.3’ (SF, resistant variety) and ‘Cat's Eye’ (MY, susceptible variety) were used as test materials to determine the effects of common bean bacterial blight on photosynthetic parameters, photosynthetic pigment content, POD, SOD activity and superoxide anion content-accumulation at different times after inoculation. The results showed that: (1) among different resistant varieties, the net photosynthetic rate, stomatal conductance, stomatal limitation value and water use efficiency of the two varieties showed a downward trend, except for the increase of intercellular CO2 concentration, and the increase and decrease showed MY>SF. (2) Chlorophyll a, chlorophyll b, total chlorophyll and carotenoid contents of the two varieties decreased due to bacterial blight infestation of common beans, and the overall contents showed SF>MY. This indicated that the photosynthesis and photosynthetic pigment contents of SF were less affected by bacterial blight stress of common beans than MY. (3) The overall POD activity of MY was 3 times higher than that of SF, and the SOD activity showed SF>MY. In terms of superoxide anion content-accumulation, the release of SF decreased 2 d earlier than that of MY, and its defense mechanism appeared earlier than MY. It indicated that maintaining high photosynthetic performance was the physiological basis for strong resistance to the bacterial blight of common bean, and both POD and SOD activities can be used as physiological indicators for the identification of resistance to the bacterial blight of common bean.

Key words: common bean, bacterial blight, photosynthetic pigments, photosynthetic properties, physiological and biochemical indicators