华北农学报 ›› 2014, Vol. 29 ›› Issue (4): 151-154. doi: 10.7668/hbnxb.2014.04.026

所属专题: 玉米 油料作物

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油菜素内酯提高玉米幼苗抗病性与Ca2+分布的关系

由诗东, 张海丽, 高静, 张昊, 黄新, 李生辉, 王凤茹, 董金皋   

  1. 河北农业大学 生命科学学院, 植物分子病理学实验室, 河北 保定 071001
  • 收稿日期:2014-05-17 出版日期:2014-08-28
  • 通讯作者: 董金皋(1964-),男,河北邢台人,教授,博士,博士生导师,主要从事植物分子病理学研究。王凤茹(1972-),女,河北景县人,副教授,博士,硕士生导师,主要从事植物激素信号转导研究。
  • 作者简介:由诗东(1988-),男,河北邢台人,在读硕士,主要从事油菜素内酯对植物生长发育影响的研究。
  • 基金资助:
    河北省自然科学基金项目(C2013204106);河北省高等教育教学改革研究项目(2012GJJG058)

Effect of Brassinosteroid on the Physiological Characters and the Ca2+ Distribution in Maize

YOU Shi-dong, ZHANG Hai-li, GAO Jing, ZHANG Hao, HUANG Xin, LI Sheng-hui, WANG Feng-ru, DONG Jin-gao   

  1. Mycotoxin and Molecular Plant Pathology Lab, College of Life Science, Agricultural University of Hebei, Baoding 071001, China
  • Received:2014-05-17 Published:2014-08-28

摘要: 为明确油菜素内酯(Brassinosteroid,BR)对Ca2+信使系统的影响及提高玉米抗病性的关系,为阐明BR提高玉米抗病性的机理提供理论依据。以玉米品种浚单20为材料,研究了BR处理后对玉米幼苗细胞中Ca2+分布的影响和玉米叶片对层出镰孢菌的抗性的变化情况。结果发现:BR处理后感病的叶鞘数目减少,病斑面积减小,细胞壁中Ca2+分布明显减少,细胞间隙中Ca2+分布明显增加,使得受侵染的部位比健康组织有更强的抗软化能力,抑制真菌的进一步侵染。

关键词: 油菜素内酯(BR), 抗病, 钙离子, 玉米

Abstract: In this study,we adopted maize variety Jundan 20 to explore the effect of Brassinosteroid(BR) treatment on Ca2+ distribution in maize seedling cells and resistance change of maize leaf against Fusarium proliferatum,aiming to verify the influence of BR on Ca2+ messenger system and its correlation with the enhancement of disease resistancein maize,thus providing the theoretical basis for illuminating the mechanism of BR in enhancing disease resistance of maize.The results showed that the number of disease infected sheath decreased after BR treatment along with shrunken lesion area,significant decrease of Ca2+ distribution in cell wall and obvious increase of Ca2+ distribution in intercellular space.In this way,the infected area will be more capable to resist softening compared with healthy tissues,and further fungus infection will be inhibited.

Key words: Brassinosteroid(BR), Disease resistance, Ca2+, Maize

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引用本文

由诗东, 张海丽, 高静, 张昊, 黄新, 李生辉, 王凤茹, 董金皋. 油菜素内酯提高玉米幼苗抗病性与Ca2+分布的关系[J]. 华北农学报, 2014, 29(4): 151-154. doi: 10.7668/hbnxb.2014.04.026.

YOU Shi-dong, ZHANG Hai-li, GAO Jing, ZHANG Hao, HUANG Xin, LI Sheng-hui, WANG Feng-ru, DONG Jin-gao. Effect of Brassinosteroid on the Physiological Characters and the Ca2+ Distribution in Maize[J]. journal1, 2014, 29(4): 151-154. doi: 10.7668/hbnxb.2014.04.026.

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