HOME >> BIOLOGY >> NEWS
The secret love life of plants

A large portion of plant seeds is endosperm. It has the important task of nourishing the plant embryo during the early stages of its development. In flowering plants, there is a complicated double-fertilisation mechanism that arises among embryos and endosperm. They develop together into mature seeds. The exact process, and the communication between the two parts of the seeds, has been unclear to scientists. Researchers at the Max Planck Institute for Plant Breeding Research and the University of Cologne have, however, isolated a mutant where there is only one single fertilisation. In a recent online edition of the journal Nature Genetics (November 28, 2005) they explain that this single fertilisation, which creates an embryo, also triggers the development of endosperm, even when the central cell where endosperm develops is not fertilised. The ovules of flowering plants are housed in a carpel. Pollen lands on the flower's stigma and forms a pollen tube. It then uses each one of its two sperm cells to fertilise the egg cell, from which the embryo hatches, and the central cell, where the endosperm grows. This double fertilisation is what is special to all flowering plants.

Scientists in Cologne, working with Arp Schnittger, have found a mutant of the plant Arabidopsis thaliana called cdc2. It has an altered pollen. Because of a failed cell division, the cdc2-plants develop pollen that has only one sperm cell instead of two. The researchers have now been exploring the question if whether, under these conditions, fertilisation is possible at all. It turned out that the mutated pollen can survive and even grow into a female partner. Once it has arrived there, the single sperm cell of the cdc2 pollen merges only with the egg cell and not with the central cell. This shows a hierarchy, never before discovered, in the fertilisation process of Arabidopsis.

The scientists made another astounding observation: although the central cell remained unfertilised, i
'"/>

Contact: Dr. Arp Schnittger
schnitt@mpiz-koeln.mpg.de
49-221-506-2627
Max-Planck-Gesellschaft
8-Dec-2005


Page: 1 2

Related biology news :

1. Secret life of elephant seals not secret anymore!
2. Anthrax bacteriums deadly secrets probed
3. Uncovering the secrets of the deep
4. Natures secrets yield new adhesive material
5. Decoding mushrooms secrets could combat carbon, find better biofuels and safer soils
6. St. Jude study yields secrets of chromosome movement
7. UVa-led team uncovers important secret in gene replication
8. UCR biologists unravel the genetic secrets of black widow spider silk
9. Nature surrenders flowery secrets to international team
10. Scientists identify prions infectious secret
11. Puzzling plankton yield secrets to role in evolution/global photosynthesis

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The secret love life plants

(Date:4/17/2014)... in bone marrow need to produce hydrogen sulfide in ... to a new study from the Center for Craniofacial ... of USC. , Professor Songtao Shi, principal investigator on ... by the cells governs the flow of calcium ions. ... that results in osteogenesis, or the creation of new ...
(Date:4/17/2014)... deforestation and fragmentation of forests in the Amazon ... forests, contributing to rapid and widespread forest loss ... researchers., The findings show that forests in the ... droughts coupled with forest fires lead to large-scale ... Jennifer Balch, assistant professor of geography, Penn State. ...
(Date:4/17/2014)... -- Indiana University researchers have detected new early-warning signs ... This discovery could have far-reaching implications for the diagnosis ... of over 25 million Americans. , "We had not ... at such early stages," said Ann Elsner, professor and ... lead author of the study. "We set out to ...
Breaking Biology News(10 mins):Drought and fire in the Amazon lead to sharp increases in forest tree mortality 2Drought and fire in the Amazon lead to sharp increases in forest tree mortality 3New technique detects microscopic diabetes-related eye damage 2New technique detects microscopic diabetes-related eye damage 3
(Date:1/15/2014)... Automotive, a group of car dealerships headquartered in ... Center and offering free oil change coupons for participation in ... 18 at the Bill Jacobs Cadillac and Chevrolet location from ... )  The Bill Jacobs Auto annual blood ...
(Date:1/15/2014)... SAN JOSE, California , January 15, 2014 ... for cancer, today announced the appointment of Thomas C Reynolds ... over 20 years, development experience gained in the biotechnology industry, ... "I am delighted to welcome Tom at this transformative ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 Two champions ... continued their sponsorship of an annual competition for middle ... and access to, innovative STEM study. The competition presents ... TEAMS: Tests of Engineering Aptitude, Mathematics, and Sciences ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider ... treatment of tinnitus. Patients listen to sound therapy that ... period of weeks to months, their tinnitus volume decreases. , ... Notched Music and Notched White Noise. Now, AudioNotch is pleased ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5
Cached News: