Inheritance of Self-incompatibility and Brown Keel Tip in Lotus corniculatus L.

Bubar, J. S.; Miri, R. K.

doi:10.1038/2051035a0

Cited by 17 publications

(4 citation statements)

References 8 publications

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“…The herbaceous perennial Lotus corniculatus (birdsfoot trefoil), is a leguminous plant that is native to Eurasia (Small et al 1984;Steiner & Poklemba 1994) and has become naturalized in parts of North America, where it is commonly found in meadows and on roadside verges. The allotetraploid L. corniculatus (Raelson & Grant 1988) is self-incompatible (Bubar & Miri 1965). It forms determinate root nodules in association with compatible Rhizobium loti and Bradyrhizobium sp.…”

Section: Lotus Corniculatus Sampling and Greenhouse Cultivationmentioning

confidence: 99%

Specificity in the symbiotic association of Lotus corniculatus and Rhizobium loti from natural populations

Lieven‐Antoniou

Whittam

1997

Molecular Ecology

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To test whether Rhizobium loti are coadapted to nodulate local plant genotypes, we competed R. loti strains in a common environment with clonally propagated Lotus corniculatus. Both the plants and bacterial strains were originally collected from natural populations in three localities and the R. loti strains used were distinguishable by enzyme electrophoretic markers and differed in geographical origin relative to host plant origin. The proportions of nodules occupied by symbiont strains varied widely and depended on both host plant and symbiont genotype. Nonrandom nodulation patterns resulted primarily from preferential nodulation of host genotypes by the symbiont strain that had been associated with the host in the natural environment. Symbionts nodulating their original hosts were preferentially found in nodules on adventitious tap roots as opposed to the younger, lateral roots (for one host‐symbiont pair) or in large nodules, independent of location on the root system (for a second host‐symbiont pair). The proportion of nodules occupied by a symbiont on novel host genotypes varied, ranging from nearly random expectation to a significant reduction in the proportion of nodules occupied. The analysis of the bacteria recovered from 994 nodules by multilocus enzyme electrophoresis revealed that 952 (95.8%) nodules were occupied by one of the four inoculant strains and 11 (1.1%) were co‐occupied by two inoculant strains. A total of 31 (3.1%) nodules were occupied by strains that did not match the electrophoretic profiles of the original inoculant strains. Based on the comparison of multilocus profiles for 23 enzyme loci, we concluded that these bacteria were foreign strains and not recombinants of the original inoculant strains. Our findings indicate a strong host genotype by strain interaction underlying the outcome of rhizobial competition for nodulation sites and suggest there are distinct mechanisms leading to differential recognition of compatible host and symbiont genotypes.

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Section: Lotus Corniculatus Sampling and Greenhouse Cultivationmentioning

confidence: 99%

Specificity in the symbiotic association of Lotus corniculatus and Rhizobium loti from natural populations

Lieven‐Antoniou

Whittam

1997

Molecular Ecology

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“…Few genetic studies have been conducted in L. corniculatus , comprised mostly on the inheritance of a limited number of morphological traits that primarily suggested tetrasomic, but occasionally disomic, inheritance patterns (Grant and Small, 1996). Tetrasomic inheritance was reported for cyanogenesis (Dawson, 1941), brown keel tip color (Hart and Wilsie, 1959; Buzzell and Wilsie, 1963; Ramnani and Jones, 1984), and pubescence, chlorophyll deficiency, flower color, and corolla striping (Bubar and Miri, 1965). However, brown keel tip color (in opposition to the above findings) and seed color mottling (Donovan, 1957), tannin production (Dalrymple et al, 1984), and Pgi 2 isozyme inheritance (Raelson et al, 1989) was best explained by disomic inheritance.…”

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confidence: 99%

Tetrasomic Linkage Mapping of RFLP, PCR, and Isozyme Loci inLotus corniculatusL

Fjellstrom

Steiner

Beuselinck³

2003

Crop Science

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Lotus corniculatus L. is a tetraploid (2n = 4x = 24) forage legume which has had limited inheritance studies. The purpose of this research was to develop a genetic map and characterize the genome of L. corniculatus using molecular markers. A linkage map was constructed for L. corniculatus using information from 217 markers mapped as single‐dose restriction fragment length polymorphism (RFLP), randomly amplified polymorphic DNA (RAPD), inter‐simple sequence repeat (ISSR), sequence tagged site (STS), and isozyme markers and five duplex RFLP markers. Formulas for calculating maximum likelihood estimates of recombination involving codominantly scored duplex loci in tetrasomic species from direct count data are made available. Six composite linkage groups were constructed from the combined data of four homologous linkage groups anchored by shared RFLP loci. Three of the composite groups (Groups 2, 3, and 4) were well defined, two groups (Groups 5 and 6) were poorly discriminated because of apparent marker duplication found between them, and one group (Group 1) was poorly defined because of an apparently high degree of differentiation between its homologous members. This first genetic map for L. corniculatus spans 572.1 centimorgans (cM) and serves to provide a foundation for the genetic analysis of complex traits and marker‐aided selection.

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“…Using cultivated material, Buzzell and Wilsie (1963) and Bubar and Miri (1965) have detected a locus which is involved in the control of both leaf cyanogenesis and keel colour and which results in an excess of acyanogenic light keeled plants. No such excess has been detected in natural populations (Jones and Crawford, 1977;Ramnani, 1979).…”

Section: Introductionmentioning

confidence: 99%

On the polymorphism of cyanogenesis in Lotus corniculatus L. IX. Selective herbivory in natural populations at Porthdafarch, Anglesey

1983

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SUMMARYThe L. corniculatus populations at Porthdafarch are polymorphic for the characters of leaf cyanogenesis, petal cyanogenesis and keel petal colour. Plants with cyanogenic leaves and petals occur less frequently on the sea cliffs than inland and previous studies have obtained circumstantial evidence of a link between the dine in leaf cyanogenesis and the distribution of selectively grazing molluscs.Counts of leaf and petal damage have confirmed that plants on the cliffs are grazed less heavily than those growing inland and have demonstrated that individuals with acyanogenic leaves or petals are liable to be chewed more heavily than their cyanogenic neighbours. Most of the damage was attributable to feeding by molluscs and it is concluded that herbivorous insects have only a minor role in the maintenance of the dines.

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Inheritance of Self-incompatibility and Brown Keel Tip in Lotus corniculatus L.

Cited by 17 publications

References 8 publications

Specificity in the symbiotic association of Lotus corniculatus and Rhizobium loti from natural populations

Specificity in the symbiotic association of Lotus corniculatus and Rhizobium loti from natural populations

Tetrasomic Linkage Mapping of RFLP, PCR, and Isozyme Loci inLotus corniculatusL

On the polymorphism of cyanogenesis in Lotus corniculatus L. IX. Selective herbivory in natural populations at Porthdafarch, Anglesey

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