Featured Research

from universities, journals, and other organizations

How the daffodil got its trumpet

Date:
March 9, 2013
Source:
University of Oxford
Summary:
The daffodil is one of the few plants with a 'corona', a crown-like structure also referred to as the 'trumpet'. New research suggests that the corona is not an extension of the petals as previously thought, but is a distinct organ sharing more genetic identity with stamens, the pollen-producing reproductive organs.

Close-up of a daffodil flower, showing the corona
Credit: OU/Robert Scotland

The daffodil is one of the few plants with a 'corona', a crown-like structure also referred to as the 'trumpet'. New research suggests that the corona is not an extension of the petals as previously thought, but is a distinct organ sharing more genetic identity with stamens, the pollen-producing reproductive organs.

The origin of the corona has long been a subject of debate in botany, and in the 1930s botanist Agnes Arber claimed that it was an extension from the petals. With its colourful petal-like appearance, it's easy to see why this was believed for so long. Yet by studying the corona's development and genetic information, this new study has shown that it is in fact related to stamens.

Dr Robert Scotland of the University of Oxford led the research, and was supported by colleagues at Harvard University, the United States Department of Agriculture and the University of Western Australia. The researchers were funded by the Gatsby Charitable Foundation and the United States National Science Foundation. The study is published online in The Plant Journal.

By studying the development of daffodil flowers, the researchers found that the corona only begins to form after the other parts of the flower are fully established. "This shows that the corona could not be a straightforward modification of either petals or stamens," explains Dr Scotland. "Since it develops independently of both, it is more accurately described as a separate organ."

The different parts of daffodil flowers are located on a small cup-like platform termed the 'hypanthium'.

The researchers analysed genetic activity in all parts of the daffodil flower, and found that daffodil coronas were genetically similar to the stamens and hypanthium, but not the petals.

"We found that the corona develops from the hypanthium, and is not simply en extension of the petals or stamens," says Dr Scotland. "The corona is an independent organ, sharing more genetic identity with stamens, and which develops after the other organs are fully established."


Story Source:

The above story is based on materials provided by University of Oxford. Note: Materials may be edited for content and length.


Journal Reference:

  1. Mark T Waters, Anna M M Tiley, Elena M Kramer, Alan W Meerow, Jane A Langdale, Robert W Scotland. The corona of the daffodil Narcissus bulbocodium shares stamen-like identity and is distinct from the orthodox floral whorls. The Plant Journal, 2013; DOI: 10.1111/tpj.12150

Cite This Page:

University of Oxford. "How the daffodil got its trumpet." ScienceDaily. ScienceDaily, 9 March 2013. <www.sciencedaily.com/releases/2013/03/130309160248.htm>.
University of Oxford. (2013, March 9). How the daffodil got its trumpet. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2013/03/130309160248.htm
University of Oxford. "How the daffodil got its trumpet." ScienceDaily. www.sciencedaily.com/releases/2013/03/130309160248.htm (accessed July 22, 2014).

Share This




More Plants & Animals News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Michigan Plant's Goal: Flower and Die

Michigan Plant's Goal: Flower and Die

AP (July 22, 2014) An 80-year-old agave plant, which is blooming for the first and only time at a University of Michigan conservatory, will die when it's done (July 22) Video provided by AP
Powered by NewsLook.com
San Diego Zoo Welcomes New, Rare Rhino Calf

San Diego Zoo Welcomes New, Rare Rhino Calf

Reuters - US Online Video (July 21, 2014) An endangered black rhino baby is the newest resident at the San Diego Zoo. Sasha Salama reports. Video provided by Reuters
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
$23.6 Billion Awarded To Widow In Smoking Lawsuit

$23.6 Billion Awarded To Widow In Smoking Lawsuit

Newsy (July 20, 2014) Cynthia Robinson claims R.J. Reynolds Tobacco Company hid the health and addiction risks of its products, leading to the death of her husband in 1996. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins