Scientists uncover how the amount of DNA and number of chromosome sets make certain plants genetic supervillains when they invade new regions.
Tag - genome size
Alun Salt
A.I. Assistant
The nature of eyebright intraspecific genome size variation
Botanists find notable genuine genome size variation of up to 1.3-fold between individuals of the same species.
botanyone
Clonal female populations dominate the tropical herb genus, Hanguana
Can apomixis explain the distribution of Hanguana individuals in Singapore?
William Salter
More DNA in golden-brown algae leads to bigger cells, but slower growth
The study fills a gap in knowledge in the effects of nuclear DNA size in single-cell algae and protists.
Invasion, isolation and evolution shape population genetic structure in Campanula rotundifolia
The genes of Harebell populations show the history of post-glacial colonisation.
Predominance of L-S Type of rDNA Organization in Liverworts
The rDNA of Liverworts is unusually organised.
Alex Assiry
How do you get more DNA down a pollen tube?
A common event for flowering plants is whole genome duplication (WGD), where a plant gets extra chromosomes. It’s often studied in mature plants, but there can also be extra copies of the genome in the pollen, and...
Puzzles in Moss Genome Evolution
Some plants have pairs of chromosomes, they’re diploid organisms like us. Other plants have more than two copies of chromosomes, they’re polyploid. Strawberries can even be octoploid. Mosses can be polyploid too, but a...
Fi Gennu
Temporal patterns of Brassicaceae diversification
Huang et al. propose that whole genome duplication events serve as a constant pump for continuous and high species diversification.
Repetitive DNA is not behind genome size variation in Anacyclus
Plant genome size (GS) varies widely – by as much as a factor of 2500 in land plants alone. Outside of genome duplication (polyploidy), repetitive DNA is thought to be the main contributor to this variation. However...
Erin Zimmerman
Cytogeography of Cystopetris fragilis complex
The widely distributed Cystopteris fragilis brittle bladder-fern, complex is a challenging system for studying polyploid evolution, cytotype diversity, distribution and ecology. Hanušová et al. screen cytotypes over the...
Haematococcus lacustris: the makings of a giant-sized chloroplast genome
Recent work on the green alga Haematococcus lacustris uncovered the largest plastid genome on record: a whopping 1.35 Mb (with >90% non-coding DNA). In a recent review published in AoBP, David R. Smith takes a closer...
Shoot apical meristem and plant body organization: a cross-species comparative study
The shoot apical meristem (SAM) is the key organizing element of the plant body. Surprisingly, there are almost no across-species comparative data showing links between the SAM and whole-plant traits such as leaf size...
Genome size and seed mass in Aesculus
The genus Aesculus (horse chestnut, buckeye) consists of 12 to 19 extant species native to the temperate Northern Hemisphere. Aesculus is notable amongst woody angiosperms for its unusually large seeds. While chromosome...
