Science & Technology - Posted by Karl Bates-Duke on Wednesday, October 24, 2012 11:59 - 2 Comments
Botany goes Gaga for new fern genus
DUKE (US) — Scientists have named a new genus of ferns—19 species in all—for pop megastar Lady Gaga, and say that she and the ferns share unlikely similarities.
At one stage of its life, the new genus Gaga has somewhat fluid definitions of gender and bears a striking resemblance to one of Gaga’s famous costumes.
Members of the new genus, which are found in Central and South America, Mexico, Arizona, and Texas, also bear a distinct DNA sequence spelling GAGA.
Straight from the Source
Two of the species in the Gaga genus are new to science: Gaga germanotta from Costa Rica is named to honor the family of the artist, who was born Stefani Germanotta. And a newly discovered Mexican species is being dubbed Gaga monstraparva (literally monster-little) in honor of Gaga’s fans, whom she calls “little monsters.”
“We wanted to name this genus for Lady Gaga because of her fervent defense of equality and individual expression,” says study leader Kathleen Pryer, a Duke University biology professor and director of the Duke Herbarium. “And as we started to consider it, the ferns themselves gave us more reasons why it was a good choice.”
For example, in her performance at the 2010 Grammy Awards, Lady Gaga wore a heart-shaped Armani Prive’ costume with giant shoulders that looked, to Pryer’s trained eyes, exactly like the bisexual reproductive stage of the ferns, called a gametophyte. It was even the right shade of light green.
The way the fern extends its new leaves in a clenched little ball also reminds Pryer of Gaga’s claw-like “paws up” salute to her fans.
The clincher came when graduate student Fay-Wei Li scanned the DNA of the ferns being considered for the new genus. He found GAGA spelled out in the DNA base pairs as a signature that distinguishes this group of ferns from all others. The team reports their findings in Systematic Botany.
Celebrity species abound in science. There’s a California lichen named for President Barack Obama and a meat-eating jungle plant named for actress Helen Mirren. In January, an Australian horse fly described by its discoverer as “bootylicious” was named for singer Beyonce.
But those are just individual species. This is an entire genus that so far includes 19 species of ferns.
Except for the two new species, germanotta and monstraparva, the rest of the Gaga ferns are species that are being reclassified by Pryer and her co-authors. They had previously been assigned to the genus Cheilanthes based on their outward appearance. But Li’s painstaking analysis of DNA using more than 80 museum specimens and newly collected plants showed they’re distinct and deserving of their own genus.
New tools for genetic analysis are reorganizing the family tree of ferns, says Pryer, who is currently president of the American Fern Society, and president of the American Society of Plant Taxonomists, the scientists who name and categorize plant species.
Like most ferns, the Gaga group is “homosporous.” They produce tiny spherical spores that drift to the ground and germinate into heart-shaped plants called gametophytes. These independent little organisms can be female, male, or even bisexual, depending on growth conditions and what other kinds of gametophytes are around.
When conditions are right, they exchange sperm between gametophytes, but when necessary they sometimes can also self-fertilize to produce a new fern.
“The biology of these ferns is exceptionally obscure and blurred by sexual crossing between species,” Pryer says. “They have high numbers of chromosomes and asexuality that can lead to offspring that are genetically identical to the parent plant.”
Pryer freely admits that she and her lab are big Gaga fans. “We often listen to her music while we do our research. We think that her second album, ‘Born this Way,’ is enormously empowering, especially for disenfranchised people and communities like LGBT, ethnic groups, women—and scientists who study odd ferns!” Pryer says.
The research was funded in part by the National Science Foundation.
Source: Duke University