华北农学报 ›› 2011, Vol. 26 ›› Issue (6): 136-140. doi: 10.7668/hbnxb.2011.06.026

所属专题: 玉米

• 论文 • 上一篇    下一篇

HMC毒素诱导玉米同核异质B37原生质体细胞凋亡的检测

马春红1, 李秀丽1,2, 董文琦3, 及增发3, 李晓煜1, 戴志刚4, 王立安2, 贾银锁1   

  1. 1. 河北省农林科学院遗传生理研究所, 河北省植物转基因中心, 河北石家庄 050051;
    2. 河北师范大学生命科学学院, 河北石家庄 050016;
    3. 河北省农林科学院, 河北石家庄 050051;
    4 湖北省土壤肥料工作站, 湖北武汉 430064
  • 收稿日期:2011-09-28 出版日期:2011-12-28
  • 作者简介:马春红(1968-),女,浙江金华人,研究员,主要从事植物抗逆生理和遗传育种研究。
  • 基金资助:
    河北省自然科学基金项目(C2011301010);河北省人才工程培养经费(冀人社字[2010]353号);河北省科学技术研究与发展计划项目(10393912D);科技部国际科技合作项目(2006DFB02480);农业部“948”项目(2008-Z20;2011-G1)

The Detection of Apoptosis in Protoplasts from B37 Homocaryotic Multicytoplasm Genotype Maize Induced by HMC-Toxin

MA Chun-hong1, LI Xiu-li1,2, DONG Wen-qi3, JI Zeng-fa3, LI Xiao-yu1, DAI Zhi-gang4, WANG Li-an2, JIA Yin-suo1   

  1. 1. Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Plan Genetic Engineering Center of Hebei Province, Shijiazhuang 050051, China;
    2 College of Life Science, Hebei Normal University, Shijiazhuang 050016, China;
    3. Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China;
    4. Soil and Fertilizer Station of Hubei Province, Wuhan 430064, China
  • Received:2011-09-28 Published:2011-12-28

摘要: 以B37-C和B37-N的玉米原生质体和叶片为试材,研究HMC毒素对两种同核异质玉米B37细胞凋亡的诱导作用。经Hoechst33258荧光染色表明:HMC毒素处理后的玉米原生质体均出现细胞凋亡现象,在荧光显微镜下可观察到凋亡小体、染色质边集或环状染色质等凋亡特征。原生质体的细胞凋亡率,B37的C细胞质显著高于N细胞质玉米,且凋亡率随处理浓度和处理时间的增加而上升。用HMC毒素处理玉米叶片,明显出现DNA-ladder现象时所需的毒素浓度C、N两种细胞质均为200μg/mL;但C细胞质所需的时间为6 h,而N细胞质则需9 h。用荧光显微观察与凝胶电泳分析所获得的结果一致,均表现出C细胞质对毒素较为敏感,先出现细胞凋亡;N细胞质对毒素的敏感性低于C细胞质,出现细胞凋亡的时间较晚。

关键词: 玉米小斑病菌C小种毒素, 细胞凋亡, Hoechst33258染色, DNA梯状条带

Abstract: Apoptosis in protoplasts and leaves from Homokaryon maize B37 treated by HMC toxin were studied. The apoptotic features such as apoptotic bodies,chromatin margination or ring chromatin were found after the treatment stained by Hoechst33258. When treated by the same concentration of HMC toxin, the apoptosis rate of B37-C maize protoplasts were significantly higher than B37-N. In addition, the apoptosis rate was increased when the treatment time and concentration increasing. For the leaves of maize B37-C, the obvious DNA ladder was appeared with treatment concentration: 200 μg /mL; treatment time: 6 h. For the leaves of maize B37-N, the obvious DNA ladder was appeared with treatment concentration: 200 μg /mL; treatment time: 9 h which was longer than leaves of maize B37-C. Apoptosis in protoplasts from Homokaryon maize B37 were same to the leaves. B37-C was more sensitive than B37-N.

Key words: Helminthosporium maydisrace C(HMC) toxin, Apoptosis, Hoechst33258, DNA ladder

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引用本文

马春红, 李秀丽, 董文琦, 及增发, 李晓煜, 戴志刚, 王立安, 贾银锁. HMC毒素诱导玉米同核异质B37原生质体细胞凋亡的检测[J]. 华北农学报, 2011, 26(6): 136-140. doi: 10.7668/hbnxb.2011.06.026.

MA Chun-hong, LI Xiu-li, DONG Wen-qi, JI Zeng-fa, LI Xiao-yu, DAI Zhi-gang, WANG Li-an, JIA Yin-suo. The Detection of Apoptosis in Protoplasts from B37 Homocaryotic Multicytoplasm Genotype Maize Induced by HMC-Toxin[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(6): 136-140. doi: 10.7668/hbnxb.2011.06.026.