南京林业大学学报(自然科学版) ›› 2015, Vol. 58 ›› Issue (05): 1-6.doi: 10.3969/j.issn.1000-2006.2015.05.001

• 专题报道 • 上一篇    下一篇

板栗愈伤组织对栗疫菌Cp-毒素的抗性响应

韩 珊1,2,朱天辉1,2*,谯天敏3,李姝江1,2,汪 菊2,张博阳2   

  1. 1.四川农业大学林学院,四川 雅安 625014;
    2.四川省森林保护省级重点实验室,四川 雅安 625014;
    3.长江上游林业生态工程四川省重点实验室,四川 雅安 625014
  • 出版日期:2015-10-15 发布日期:2015-10-15
  • 基金资助:
    收稿日期:2013-11-18 修回日期:2015-02-01
    基金项目:高等学校博士学科点专项科研基金项目(201300329701); 国家自然科学基金项目(31400547)
    第一作者:韩珊,副教授。*通信作者:朱天辉,教授。E-mail: hanshan6618@gmail.com。
    引文格式:韩珊,朱天辉,谯天敏,等. 板栗愈伤组织对栗疫菌Cp-毒素的抗性响应[J]. 南京林业大学学报:自然科学版,2015,39(5):1-6.

Resistance responses of Castanea mollissima callus to Cp-toxin under Cryphonectria parasitica stress

HAN Shan1,2, ZHU Tianhui1,2*, QIAO Tianmin3, LI Shujiang1,2, WANG Ju2, ZHANG Boyang2   

  1. 1. College of Forestry,Sichuan Agricultural University,Ya'an 625014,China;
    2. Sichuan Provincial Key Laboratory of Forest Protection,Ya'an 625014,China;
    3. Sichuan Provincial Key Laboratory of Ecological Forestry Engineering for Upper Reach of Changjiang River,Ya'an 625014,China
  • Online:2015-10-15 Published:2015-10-15

摘要: 为了探讨板栗愈伤组织对栗疫病的抗性机制,采用栗疫菌Cp-毒素处理板栗愈伤组织,分析了毒素对不同抗性的板栗品种愈伤组织病程相关蛋白、植物保卫素及游离脯氨酸含量的影响。研究表明:在较低浓度毒素处理范围内(5~100 μg/mL),板栗愈伤组织内的游离脯氨酸含量、植物保卫素含量、几丁质酶和β-1,3-葡聚糖酶活性与Cp-毒素有关,抗病品种酶活性升幅大于感病品种; 当毒素质量浓度高于100 μg/mL后,植物保卫素含量以及几丁质酶和β-1,3-葡聚糖酶活性下降,感病品种降幅大于抗病品种,而游离脯氨酸含量在品种间变化不大。说明在毒素低浓度处理下不同品种抗性物质含量都有所增加,证明了几丁质酶和β-1,3-葡聚糖酶、植物保卫素是板栗愈伤组织抵抗病原菌毒素的内在机制,而游离脯氨酸含量变化不是引起品种抗性差异的重要因子。

Abstract: In order to clarify the resistance mechanism of different chestnut cultivars to Cp-toxin stress, effects of different concentrations of Cp-toxin from Cryphonectria parasitica on the activities of chitinase, β-1,3-glucanase, the contents of phytoalexin, free proline(Pro)of chestnut callus were analyzed.In this study, a significant correlation was observed between the treatment concentration and chestnut resistance. The results showed that the activities of enzymes increased notably when treated with the low concentrations of Cp-toxin(5-100 μg/mL). When treated with the high concentrations of Cp-toxin(>100 μg/mL),the activities of enzymes and the contents of phytoalexin decreased notably.These data suggested that resistant materials in different varieties increased significantly under the treatment with low concentration of Cp-toxin. This study also indicates that the chitinase, β-1,3-glucanase and phytoalexins were the inherent mechanism for resistance of chestnut callus to toxin stress, and change of free proline content was not an important factor related to the resistance.

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