Medicago truncatula as a Model for Nonhost Resistance in Legume-Parasitic Plant Interactions1[C]
Medicago truncatula as a Model for Nonhost Resistance in Legume-Parasitic Plant Interactions1[C]
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DOI：
10.1104/pp.107.097089
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发表时间：
2007-08
期刊：
影响因子：
7.4
通讯作者：
M. Lozano-Baena;E. Prats;M. Moreno;D. Rubiales;A. Pérez-de-Luque
中科院分区：
文献类型：
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作者：
M. Lozano-Baena;E. Prats;M. Moreno;D. Rubiales;A. Pérez-de-Luque
Crenate broomrape （orobche crenata）是一种根寄生杂草，是地中海和西亚国家豆科作物生产的主要制约因素。鸢尾草已成为结构和功能基因组学研究的重要模式植物。摘要利用不同的细胞学方法研究了两份截尾稻对圆齿帚花的抗性机制，结果表明截尾稻对圆齿帚花的抗性表现为早抗性和晚抗性。在早期抗性加入（SA27774）中，我们发现寄生虫在结核形成之前死亡。在抗性后期加入（SA4327）时，寄生虫在寄主根系上没有明显的问题，但大多数已建立的结核变黑并在出生前死亡。结果表明，两种植物都存在防御机制，但存在时间差距，这对于更成功地避免寄生虫感染至关重要。
Crenate broomrape (Orobanche crenata) is a root parasitic weed that represents a major constraint for grain legume production in Mediterranean and West Asian countries. Medicago truncatula has emerged as an important model plant species for structural and functional genomics. The close phylogenic relationship of M. truncatula with crop legumes increases its value as a resource for understanding resistance against Orobanche spp. Different cytological methods were used to study the mechanisms of resistance against crenate broomrape of two accessions of M. truncatula, showing early and late acting resistance. In the early resistance accession (SA27774) we found that the parasite died before a tubercle had formed. In the late resistance accession (SA4327) the parasite became attached without apparent problems to the host roots but most of the established tubercles turned dark and died before emergence. The results suggest that there are defensive mechanisms acting in both accessions but with a time gap that is crucial for a higher success avoiding parasite infection.