1999
DOI: 10.1007/s004380051053
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Genetic mapping and functional analysis of a nodulation-defective mutant (sym19) of pea (Pisum sativum L.)

Abstract: The pea mutant line P55 is defective in root nodule formation, and this phenotype is controlled by a single recessive gene. Complementation analysis revealed that the mutation in P55 is allelic to sym19, which has previously been mapped to linkage group I. Detailed mapping revealed that the sym19 and ENOD40 loci are separated by 2.7 cM. We identified four recombination events, demonstrating that the nodulation defect caused by mutation of the sym19 locus cannot be due to mutation of ENOD40. RT-PCR experiments … Show more

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Cited by 43 publications
(25 citation statements)
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“…This is followed by root hair deformation and the development of empty nodules (169) Another interesting approach to the study of Nod factor signaling is the analysis of nodulation-deficient plant mutants (160). Various plant hosts blocked in the early steps of symbiosis have been identified, and positional cloning of the plant symbiotic genes has been initiated (47,149,174). Analysis of these plant mutants promises to be a very active area of study in the near future.…”
Section: Nodulation (Nod) Factorsmentioning
confidence: 99%
“…This is followed by root hair deformation and the development of empty nodules (169) Another interesting approach to the study of Nod factor signaling is the analysis of nodulation-deficient plant mutants (160). Various plant hosts blocked in the early steps of symbiosis have been identified, and positional cloning of the plant symbiotic genes has been initiated (47,149,174). Analysis of these plant mutants promises to be a very active area of study in the near future.…”
Section: Nodulation (Nod) Factorsmentioning
confidence: 99%
“…Frisson (24,25). P4 and P55 belong to complementation group c (24,25), which corresponds to the sym19 locus (26). P5 and P56 are in complementation group d (24,25) and carry alleles of sym10.…”
Section: Methodsmentioning
confidence: 99%
“…Phenotypic analysis of mutant plants has established a role of this receptor kinase in a pathway leading from the perception of the NF signal to the activation of symbiosis-related gene expression (Schneider et al, 1999;Catoira et al, 2000;Stracke et al, 2002). The L. japonicus genes CASTOR (previously SYM4 ], SYM22 [Szczyglowski et al, 1998], and SYM71 [Kawaguchi et al, 2002]) and POLLUX (previously SYM23 [Szczyglowski et al, 1998] and SYM86 [Imaizumi-Anraku et al, 2004]) encode closely related proteins that are predicted ion channels (ImaizumiAnraku et al, 2004).…”
Section: Introductionmentioning
confidence: 99%