HOME >> BIOLOGY >> NEWS
Plants with male and bisexual flowers on the same plant are better mothers

What would be the opening chapter of the Kamasutra of plant sex? A good pick would be a description of the numerous ways in which plants arrange their sexual organs: from both sexes in the same flower to sexes separated in different flowers or individuals. One widespread sexual strategy that remains an evolutionary enigma is the production of both male and bisexual flowers in the same plant, which occurs in approximately 4000 species. What is the advantage of producing these redundant male flowers? Mario Vallejo-Marin and Mark Rausher, evolutionary biologists from Duke University, report that producing male flowers can make a plant a better mother, in the May issue of the American Naturalist. The authors showed this counter-intuitive benefit of a "male" strategy through a series of field experiments with horsenettle, a common weed in North Carolina. The experimental demonstration that male flowers can sometimes increase seed number supports a new interpretation that male flowers increase not only male but also female reproductive success.

So what is the mechanism through which male flowers increase female reproductive success? Such a benefit may arise if resources saved by producing smaller male flowers are reallocated to increased seed production, if male flowers are more attractive to pollinators, or if male flowers remove less pollen from pollinators than bisexual flowers, thus increasing the amount of non-self pollen available for fruit-producing flowers. Which one of these mechanisms is responsible for the "good mothers" in Vallejo-Marin and Rausher's study? "We don't know yet," says Mario, "but these alternatives could easily be tested through more experiments." Data from an unrelated study indicate that the female advantage of producing male flowers is not unique to horsenettle. To what extent strategies traditionally interpreted as "male" also benefit female fitness in other species remains an open and interesting question.


'"/>

Contact: Patricia Morse
pmorse@uchicago.edu
773-702-0446
University of Chicago Press Journals
30-Apr-2007


Page: 1

Related biology news :

1. Plants recognize their siblings, biologists discover
2. Plants that produce more vitamin C may result from UCLA-Dartmouth discovery
3. Plants tag insect herbivores with an alarm
4. Plants do not emit methane
5. Plants management of nutrient suggests environmental remedies
6. Plants point the way to coping with climate change
7. Plants, plasmids and possibilities -- Methods permit functional gene studies in plants
8. Plants give up answers in the war on bacteria
9. Plants tell caterpillars when its safe to forage
10. Plants role in global warming re-examined in ORNL Science paper
11. Hold your breath; Plants may absorb less carbon dioxide than we thought

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/5/2020)... ... 2020 , ... In September 2016, stem cell biotechnology company ... the first, and still only, available technology that provides the cell-specific count or ... about the number and quality of therapeutic tissue stem cells are unable to ...
(Date:3/3/2020)... ... March 03, 2020 , ... Amplify Surgical, Inc., today announces that the company ... System. , The landmark case was performed by Dr. Ali Najafi at ... noted, “dualX has completely changed the game for expandable interbodies. The ability to ...
(Date:3/2/2020)... CHICAGO (PRWEB) , ... March 02, 2020 , ... ... attendance at the 71st annual Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy ... in Chicago, Illinois. Pittcon is the world’s leading annual conference and exposition on ...
Breaking Biology News(10 mins):
(Date:2/21/2020)... Ontario (PRWEB) , ... February 20, 2020 , ... In ... GMT/UK) join guest speakers from Synteract including Lisa Dilworth, BS, MS, Vice ... discussion about these challenges, with feasible strategies and solutions to support patients, sites and ...
(Date:2/19/2020)... ... 2020 , ... Shoreline Biome, a microbiome research ... recently unveiled a novel DNA isolation product. , Shoreline Rapid Prep is a ... weight (HMW) single-stranded DNA (ssDNA) in excess of 40 kB from Gram-negative bacteria, ...
(Date:2/11/2020)... ... February 11, 2020 , ... Synagro ... North America, today announced that the City of Fort Worth has partnered with ... needs. Commencing in April of 2020, Synagro will assume operation of the city’s ...
(Date:2/3/2020)... (PRWEB) , ... February 03, 2020 , ... ... offices in Cambridge, MA, announce that OmniType, the 11-locus, single tube multiplex successor ... OmniType is a best-in-class product featuring locus-multiplexing and short library preparation, for HLA ...
Breaking Biology Technology:
Cached News: