单 位：
康乃尔大学园艺和植物病理系;中国科学院植物研究所光合作用与环境分子生理重点实验室
摘 要：
本文研究了生物拮抗菌Trichoderma harzianum(T22)处理对玉米(Mo17)实生苗生长的影响,以及对病原菌Col-letrichonum graminicola的抗病性。试验结果表明:用拮抗菌T.harzianum处理后能明显地提高玉米苗根系发育和叶片生长,显著的诱导玉米叶片和根系中防御相关的酶活性和蛋白含量。用病原菌C. graminicola接种玉米叶片后观测发现,处理的实生苗叶片上病斑直径明显小于不处理的对照。尽管拮抗菌T. harzianum诱导植物抗病性的作用已被证实,但该研究更进一步揭示了T.harzianum处理玉米种子后植株的抗性应答与促进实生苗根系发育和叶片生长,以及诱导抗性相关的酶。
译 名：
Defense Response Induced by Seed Treatment with Trichoderma harzianum in Maize Mo17
作 者：
TIAN Shi-ping1,HARMAN Gary2(1Key Laboratory of Photosynthesis and Environmental Molecular Physiology,Institute of Botany,The Chinese Academy of Sciences,Beijing 100093,China;2Departments of Horticultural Sciences and Plant Pathology,Cornell University,Geneva,NY 14456,USA)
关键词：
Trichoderma harzianum;induced resistance;maize
摘 要：
The effects of seed treatment with or without Trichoderma strain T22 on root development and shoot growth of maize and on induced resistance against Colletrichonum graminicola were investigated.The results indicated that seed treatment with Trichoderma directly enhanced root development and plant growth of maize seedlings,significantly induce an increased level in defense-related plant enzymes and protein contents in both roots and leaves,and obviously limit disease development of C.graminicola in inoculated leaves.Even before convincing evidence of induced resistance in plants by Trichoderma strains was available,the results might be beneficial for consummating the effect of Trichoderma strains inducing defense response to pathogen infection and enhancing root development and shoot growth of maize seedlings.
