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Polyploidy Inference Across Time Sca...

Mohn, Rebekah Anne.

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Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales)./
作者:	Mohn, Rebekah Anne.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	105 p.
附註:	Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:	Dissertations Abstracts International85-01B.
標題:	Botany. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30523916
ISBN:	9798379945008

Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales).
Mohn, Rebekah Anne.

Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales). - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 105 p.

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

Thesis (Ph.D.)--University of Minnesota, 2023.

This item must not be sold to any third party vendors.

Chromosome number change is a driver of speciation in eukaryotic organisms. Carnivorous sundews, the plant genus Drosera L., exhibit single chromosome number variation among and within species, especially in the Australian Drosera subg. Ergaleium D.C., potentially linked to the presence of holocentromeres. We critically reviewed literature on chromosome counts in Drosera, verified the taxonomy and count quality, and reconstructed chronograms to test alternate models where the chromosome number gain, loss, and doubling rates (+1, −1, x2) were the same or different between D. subg. Ergaleium and the other subgenera. The best model for chromosome evolution had equal rates of polyploidy (0.013 per million years; Myr) but higher rates of single chromosome number gain (0.13 and 0.021 per Myr) and loss (0.14 and 0.00040 per Myr) in D. subg. Ergaleium compared to the other subgenera. We found no evidence for differences in single chromosome evolution to be associated with differences in diploidization after polyploidy, self-compatibility, or to holocentric chromosomes as had been previously proposed. This study highlights the complexity of factors influencing rates of chromosome number evolution.

ISBN: 9798379945008Subjects--Topical Terms:

516217
Botany.
Subjects--Index Terms:

Chromosome evolution

Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales).
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245 1 0 $a Polyploidy Inference Across Time Scales in the Charismatic Carnivorous Plant Genus Drosera L. (Droseraceae, Caryophyllales).
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 105 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
500 $a Includes supplementary digital materials.
500 $a Advisor: Yang, Ya.
502 $a Thesis (Ph.D.)--University of Minnesota, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Chromosome number change is a driver of speciation in eukaryotic organisms. Carnivorous sundews, the plant genus Drosera L., exhibit single chromosome number variation among and within species, especially in the Australian Drosera subg. Ergaleium D.C., potentially linked to the presence of holocentromeres. We critically reviewed literature on chromosome counts in Drosera, verified the taxonomy and count quality, and reconstructed chronograms to test alternate models where the chromosome number gain, loss, and doubling rates (+1, −1, x2) were the same or different between D. subg. Ergaleium and the other subgenera. The best model for chromosome evolution had equal rates of polyploidy (0.013 per million years; Myr) but higher rates of single chromosome number gain (0.13 and 0.021 per Myr) and loss (0.14 and 0.00040 per Myr) in D. subg. Ergaleium compared to the other subgenera. We found no evidence for differences in single chromosome evolution to be associated with differences in diploidization after polyploidy, self-compatibility, or to holocentric chromosomes as had been previously proposed. This study highlights the complexity of factors influencing rates of chromosome number evolution.
590 $a School code: 0130.
650 4 $a Botany. $3 516217
650 4 $a Molecular biology. $3 517296
650 4 $a Evolution & development. $3 3172418
650 4 $a Plant sciences. $3 3173832
653 $a Chromosome evolution
653 $a Drosera
653 $a Droseraceae
653 $a Mating system
653 $a Polyploid
653 $a Reticulation
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690 $a 0307
690 $a 0412
690 $a 0479
710 2 $a University of Minnesota. $b Plant and Microbial Biology. $3 3429794
773 0 $t Dissertations Abstracts International $g 85-01B.
790 $a 0130
791 $a Ph.D.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30523916