Genomic gigantism in the whisk-fern family (Psilotaceae): Tmesipteris obliqua challenges record holder Paris japonica

被引：23

作者：

Hidalgo, Oriane ^{[1
]}

Pellicer, Jaume ^{[1
]}

Christenhusz, Maarten J. M. ^{[2
]}

Schneider, Harald ^{[3
,4
]}

Leitch, Ilia J. ^{[1
]}

机构：

[1] Royal Bot Gardens, Richmond TW9 3DS, Surrey, England

[2] Plant Gateway, 5 Talbot St, Hertford SG13 7BX, Herts, England

[3] Sun Yat Sen Univ, Coll Ecol & Evolut, Guangzhou 510265, Guangdong, Peoples R China

[4] Nat Hist Museum, Dept Life Sci, London W7 5BD, England

来源：

BOTANICAL JOURNAL OF THE LINNEAN SOCIETY | 2017年 / 183卷 / 04期

关键词：

C-value; diploidization; obese genomes; polyploidization; pteridophytes; CHROMOSOME EVOLUTION; NUCLEAR-DNA; SIZE; ANGIOSPERMS; PLANTS; LYCOPHYTES; GEOPHYTES; GENETICS;

D O I：

10.1093/botlinnean/box003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We report the discovery of the largest fern genome in Tmesipteris obliqua (1C = 150.61 pg), a species belonging to the whisk-fern family, Psilotaceae. Its genome size estimated by flow cytometry is comparable with the largest genome so far reported for any eukaryote, in the monocot Paris japonica (Melanthiaceae; 1C = 152.23 pg). The addition of this new record doubles the range of genome size values so far encountered in ferns from 97.2-fold (0.77-74.84 pg/1C) to 196-fold (0.77-150.61 pg/1C). This finding emphasizes the importance of filling taxonomic gaps in our knowledge to uncover the full extent of genome size diversity across the different lineages of land plants.

引用

页码：509 / 514

页数：6