RRC ID 4383
著者 Kubo M, Ueda H, Park P, Kawaguchi M, Sugimoto Y.
タイトル Reactions of Lotus japonicus ecotypes and mutants to root parasitic plants.
ジャーナル J Plant Physiol
Abstract Witchweeds (Striga spp.) and broomrapes (Orobanche spp.) are obligate root parasitic plants on economically important field and horticultural crops. The parasites' seeds are induced to germinate by root-derived chemical signals. The radicular end is transformed into a haustorium which attaches, penetrates the host root and establishes connection with the vascular system of the host. Reactions of Lotus japonicus, a model legume for functional genomics, were studied for furthering the understanding of host-parasite interactions. Lotus japonicus was compatible with Orobanche aegyptiaca, but not with Orobanche minor, Striga hermonthica and Striga gesnerioides. Orobanche minor successfully penetrated Lotus japonicus roots, but failed to establish connections with the vascular system. Haustoria in Striga hermonthica attached to the roots, but penetration and subsequent growth of the endophyte in the cortex were restricted. Striga gesnerioides did not parasitize Lotus japonicus. Among seven mutants of Lotus japonicus (castor-5, har1-5, alb1-1, ccamk-3, nup85-3, nfr1-3 and nsp2-1) with altered characteristics in relation to rhizobial nodulation and mycorrhizal colonization, castor-5 and har1-5 were parasitized by Orobanche aegyptiaca with higher frequency than the wild type. In contrast, Orobanche aegyptiaca tubercle development was delayed on the mutants nup85-3, nfr1-3 and nsp2-1. These results suggest that nodulation, mycorrhizal colonization and infection by root parasitic plants in Lotus japonicus may be modulated by similar mechanisms and that Lotus japonicus is a potential model legume for studying plant-plant parasitism.
巻・号 166(4)
ページ 353-62
公開日 2009-3-1
DOI 10.1016/j.jplph.2008.06.007
PII S0176-1617(08)00180-6
PMID 18760498
MeSH Host-Parasite Interactions* Lotus / classification Lotus / genetics* Lotus / parasitology* Lotus / physiology Mutation / genetics* Orobanche / physiology* Plant Roots / cytology Plant Roots / growth & development Plant Roots / parasitology* Striga / physiology* Symbiosis
IF 3.013
引用数 18
WOS 分野 PLANT SCIENCES
リソース情報
ミヤコグサ・ダイズ