The result: by sequencing genomes, they found that the mutation rate in the giant duckweed was the lowest ever determined for multicellular eukaryotes.
The researchers suspect that the enormous population size of the giant duckweed, and therefore the large possibilities of selection in the course of evolution, has led to the reduction of mutations to a minimum.
Together with their collaborators, the scientists are currently working on analyzing genomes of even more duckweed samples and plan to carry out outdoor selection experiments.
Appenroth, "Relative in vitro growth rates of duckweeds (Lemnaceae)-the most rapidly growing higher plants," Plant Biology, vol.
Culley Jr., "Duckweeds (Lemnaceae family): a potential source of protein and amino acids," Journal of Agricultural and Food Chemistry, vol.
Duckweed plants of similar fronds numbers were selected to place in medium containing Cd (0.1, 0.5,1, 5,10, or 20 [micro]M Cd[Cl.sub.2]).
Fresh duckweed root samples were rinsed in tap water and deionized water and then dried with paper tissue.
The Lemnaceae (duckweed) comprise a widespread family of monocotyledonous plants growing in water [1-3].
After the fermentation of the enzymatic hydrolysis of the duckweed biomass, the ethanol content was corresponding to 50.9% of the original dry duckweed biomass .
To test the effect of the herbicide Calliofop 36 EC on the Elodea Canada and the duckweed Lemna minor, we chose the following doses, 0 (control), 35, 70, and 140[micro]g product with three replicates by treatment with 3 and 14 days.
In this study the induction of antioxidant enzyme activity of CAT suggests that the herbicide used induces oxidative stress in tissues of duckweed and E canadensis.
Cheng says, "We can kill two birds--bio-fuel production and wastewater treatment--with one stone: duckweed." Starch from duckweed can be readily converted into ethanol using the same facilities currently used for corn, Cheng adds.
Duckweed presents an attractive, non-food alternative that has the potential to produce significantly more ethanol feedstock per acre than corn, exploit existing corn-based ethanol production processes for faster scale-up, and turn pollutants into a fuel production system.
Duckweed protein has higher concentration of essential amino acids, lysine and methionine, than most plant proteins and more closely resembles animal protein in that respect.
Fresh Duckweed (Lemna pauciscostata) was harvested from Lake Geriyo, Yola with the aid of a bucket/plastic bowl and a sack which served as a sieve net.