Environmental and Genetic Determinants of Cleistogamy in a Natural Population of the Grass Danthonia spicata

Clay, Keith

doi:10.2307/2407886

Cited by 61 publications

(69 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Families 42 and 48 were not raised in the greenhouse. Families 19, 20, 33, and 36 have previously been shown to produce a relatively high proportion of CL flowers, while families 38,42,43,44,47,48, and 49 produce a relatively low proportion of CL flowers (Clay, 1982 eral, mean values for CH and CL progeny within a family were similar, varying only a few percentage points in either direction. Mean differences between CH and CL progeny were not analyzed, but a cursory review of the data indicates there is no trend for CH or CL progeny within a family to have greater mean values (Table 1).…”

Section: Resultsmentioning

confidence: 81%

“…An earlier estimate of less than 10%outcrossing ofCH flowers (Clay, 1982) was derived from the equations presented by Falconer (1981) showing the relationship between among-and withinfamily genetic variation and F, the inbreeding coefficient. Among-family genetic variance is 2FVg> and within-family genetic variance is (l -F) Vgo F can be estimated if the relative magnitudes of within-and among-family genetic vari-ance are known.…”

Section: Discussionmentioning

confidence: 99%

“…and the experimental techniques utilized in this study have been described previously (Clay, 1982). In the earlier study, the percentage of CL flowers produced by progeny ofdifferent families was examined.…”

Section: Methodsmentioning

confidence: 99%

“…Most, but not all, ramets and families were represented in both habitats (see Clay, 1982). All statistical analyses were performed with the SAS statistical programs (Helwig and Council, 1979).…”

Section: Methodsmentioning

confidence: 99%

“…A mixture of self-and cross-fertilization may be enforced in many plant species by the production of chasmogamous (CH) and cleistogamous (CL) flowers on the same plant (Uphof, 1938;Lord, 1981;Clay, 1982). CL flowers never open and are obligate1y self-fertilized, whereas CH flowers do open and are potentially outcrossed.…”

mentioning

confidence: 99%

See 4 more Smart Citations

QUANTITATIVE VARIATION OF PROGENY FROM CHASMOGAMOUS AND CLEISTOGAMOUS FLOWERS IN THE GRASS DANTHONIA SPICATA

Clay

Antonovics

1985

Evolution

Self Cite

View full text Add to dashboard Cite

Summary.-Progeny from chasmogamous (CH) and cleistogamous (CL) flowers ofthe grass Danthonia spicata were raised in their native habitat and in the greenhouse in order to determine how genetic variation was distributed among families and between CH and CL progeny within families. Twelve quantitative characters were measured on clones from individuals known to have arisen from either CH or CL flowers on a particular plant. Significant genetic variation existed for all characters measured. Most genetic variation was between families and two morphologically similar groups of families were identified. Relatively little genetic variation was found within families (approximately 5% of the total phenotypic variance). In field-raised plants, variance component analysis suggested that CL progeny were genetically more similar to each other than were CH progeny from the same plant. Levene's test of the average deviation of CH and CL progenies from their group means was nonsignificant but suggested there was a trend (0.05 < P < 0.10) for CH progeny to be more variable than CL progeny in the field but less variable in the greenhouse. The amount and distribution ofgenetic variation in the study population indicates that selective differentials would be larger among families than within families.

show abstract

Section: Resultsmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

QUANTITATIVE VARIATION OF PROGENY FROM CHASMOGAMOUS AND CLEISTOGAMOUS FLOWERS IN THE GRASS DANTHONIA SPICATA

Clay

Antonovics

1985

Evolution

Self Cite

View full text Add to dashboard Cite

show abstract

Genetic variation of the fungus Atkinsonella hypoxylon infecting poverty oat grass

2020

View full text Add to dashboard Cite

Poverty oat grass [Danthonia spicata (L.) P. Beauv. ex Roem. & Schult.] is a perennial bunch‐type grass native to North America. Poverty oat grass is often present in managed turfgrass areas of the United States where cool‐season grasses are adapted and has potential for development as a seeded low‐input turfgrass option. Naturally occurring poverty oat grass plants occasionally exhibit choke on the flowering stems because of a proliferation of fungal hyphae by the ascomycete Atkinsonella hypoxylon (Peck) Diehl. (family Clavicipitaceae). Twenty‐five A. hypoxylon isolates were cultured from choke‐exhibiting poverty oat grass plants collected from five different populations. DNA variation was evaluated at the 5.8S ribosomal ribonucleic acid (rRNA) internal transcribed spacer (ITS) first (ITS‐1) and second (ITS‐2) regions and 10 simple sequence repeat (SSR) loci. Five single nucleotide polymorphisms (SNPs) in the ITS‐1 region and an addition–deletion in the ITS‐2 region identified two isolate groups present in four of the five populations. The 10 SSR loci exhibited 28 scorable alleles and support the two groupings with variation appearing as random mutations and high linkage disequilibrium providing no evidence for sexual recombination within or between the two identified groups.

show abstract

PCR‐based detection of the epibiotic fungus Atkinsonella hypoxylon associated with its host grass Danthonia spicata

Warnke

2020

Crop Science

View full text Add to dashboard Cite

Danthonia spicata (L.) Beauv., commonly known as poverty oatgrass, is a perennial bunch-type grass native to North America. Danthonia spicata is often managed as a turfgrass in areas of the United States where cool-season grasses are adapted, and it has potential for development as a low-input turfgrass option. Naturally occurring D. spicata plants occasionally exhibit "choke" of the flowering stems due to a proliferation of fungal hyphae by the ascomycete Atkinsonella hypoxylon (Peck) Diehl. (family Clavicipitaceae). Polymerase chain reaction (PCR) primers were designed to amplify a 116-bp A. hypoxylon-specific fragment within the 5.8S ribosomal RNA Internal Transcribed Spacer 1 (ITS 1) region. The primer set was then used to amplify the fragment from 24 A. hypoxylon isolates and 24 D. spicata terminal seed head DNA extractions collected from a greenhouse-maintained population that has never exhibited choke. The A. hypoxylon ITS 1 fragment was amplified from all fungal samples and all terminal seed head samples tested. The plant and fungal amplified fragments produced the same melt peak in high-resolution melt analysis, and sequence analysis of all terminal seed head samples showed highly significant blast hits with the ITS 1 sequence of A. hypoxylon GenBank Accession U57405.1 and the 24 A. hypoxylon isolates. These results provide evidence that all sampled D. spicata plants are associated with the fungus A. hypoxylon and provide a useful tool for the study A. hypoxylon and its association with D. spicata. 1660wileyonlinelibrary.com/journal/csc2 Crop Science. 2020;60:1660-1665.How to cite this article: Warnke SE. PCR-based detection of the epibiotic fungus Atkinsonella hypoxylon associated with its host grass Danthonia spicata.

show abstract

Environmental and Genetic Determinants of Cleistogamy in a Natural Population of the Grass Danthonia spicata

Cited by 61 publications

References 33 publications

QUANTITATIVE VARIATION OF PROGENY FROM CHASMOGAMOUS AND CLEISTOGAMOUS FLOWERS IN THE GRASS DANTHONIA SPICATA

QUANTITATIVE VARIATION OF PROGENY FROM CHASMOGAMOUS AND CLEISTOGAMOUS FLOWERS IN THE GRASS DANTHONIA SPICATA

Genetic variation of the fungus Atkinsonella hypoxylon infecting poverty oat grass

PCR‐based detection of the epibiotic fungus Atkinsonella hypoxylon associated with its host grass Danthonia spicata

Contact Info

Product

Resources

About