Recognition of Cladosporium fulvum Ecp2 elicitor by non-host Nicotiana spp. is mediated by a single dominant gene that is not homologous to known Cf-genes

被引：7

作者：

De Kock, MJD

Iskander, HM

Brandwagt, BF

Laugé, R

De Wit, PJGM

Lindhout, P ^{[1
]}

机构：

[1] Univ Wageningen & Res Ctr, Grad Sch Expt Plant Sci, Lab Plant Breeding, Wageningen, Netherlands

[2] Univ Wageningen & Res Ctr, Grad Sch Expt Plant Sci, Phytopathol Lab, Wageningen, Netherlands

来源：

MOLECULAR PLANT PATHOLOGY | 2004年 / 5卷 / 05期

关键词：

D O I：

10.1111/J.1364-3703.2004.00239.X

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cladosporium fulivum is a fungal pathogen of tomato that grows exclusively in the intercellular spaces of leaves. Ecp2 is one of the elicitor proteins that is secreted by C fulvum and is specifically recognized by tomato plants containing the resistance gene Cf-Ecp2. Recognition is followed by a hypersensitive response (HR) resulting in resistance. HR-associated recognition of Ecp2 has been observed in Nicotiana paniculata, N. sylvestris, N. tabacum and N. undulata that are non-host plants of C fulvum. Absence of Ecp2-recognition did not lead to growth of C fulvum on Nicotiana plants, We show that HR-associated recognition of Ecp2 is mediated by a single dominant gene in N. paniculata. However, based on PCR and hybridization analysis this gene is not homologous to known Cf-genes.

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收藏

页码：397 / 408

页数：12

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