| Title |
Evidence of genetic segregation in the apogamous fern species Cyrtomium fortunei (Dryopteridaceae)
|
|---|---|
| Published in |
Journal of Plant Research, March 2012
|
| DOI | 10.1007/s10265-012-0483-9 |
| Pubmed ID | |
| Authors |
Ryo Ootsuki, Hirotoshi Sato, Narumi Nakato, Noriaki Murakami |
| Abstract |
In apogamous ferns, all offspring from a parent are expected to be clonal. However, apogamous 'species' frequently demonstrate a large amount of morphological and genetic variations. Cyrtomium fortunei composed of four varieties (C. fortunei var. fortunei, var. clivicola, var. intermedium, and var. atropunctatum), is all reported to be apogamous triploids, but demonstrates large and continuous morphological variation. In previous studies, we showed that considerable genetic diversity was observed in many local populations of the apogamous fern 'species'. We hypothesized that genetic segregation has occurred, because neither sexual type nor intraspecific polyploidy have been observed in C. fortunei in Japan. Of 732 progeny examined (250 gametophytes and 482 sporophytes), obtained from a parental sporophyte whose pgiC genotype was estimated as aab, 11 (4.4%) gametophytes and 8 (1.7%) sporophytes showed a different genotype (aaa) from that of the parent sporophyte. We showed that genetic segregation occurs in apogamous C. fortunei in relatively high frequency. Moreover, we could first show that the segregation frequency in gametophytes is significantly higher than that in sporophytes of the next generation (χ² = 4.90, P = 0.027). It may suggest the existence of deleterious genes, which are expressed during the morphogenesis and growth of sporophytes. |
Mendeley readers
The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 22 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Professor | 4 | 18% |
| Student > Bachelor | 3 | 14% |
| Student > Ph. D. Student | 3 | 14% |
| Researcher | 3 | 14% |
| Student > Master | 2 | 9% |
| Other | 4 | 18% |
| Unknown | 3 | 14% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 15 | 68% |
| Biochemistry, Genetics and Molecular Biology | 2 | 9% |
| Mathematics | 1 | 5% |
| Earth and Planetary Sciences | 1 | 5% |
| Unknown | 3 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 02 July 2012.
All research outputs
#20,172,971
of 22,685,926 outputs
Outputs from Journal of Plant Research
#739
of 820 outputs
Outputs of similar age
#141,640
of 156,274 outputs
Outputs of similar age from Journal of Plant Research
#5
of 5 outputs
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