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:10/16/2014)... have a new synthesis of recent research findings to ... in the two states. , The Ecology and ... Washington: A Synthesis of the Relevant Biophysical Science and ... published by the U.S. Forest Service,s Pacific Northwest Research ... managers for a synthesis of the large body of ...
(Date:10/16/2014)... NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market announces ... the Smart Wallet, at the 13 th annual ... global conference on the intersection of technology and the ... , founder and publisher of the Strategic News Service™, ...
(Date:10/15/2014)... is spreading rapidly and to an unexpected extent. The ... past and the virus shows a new disease dynamic ... For this reason, the German National Academy of Sciences ... Engineering, and the Union of the German Academies of ... Ebola epidemic today. , In the statement the academies ...
Breaking Biology News(10 mins):New report synthesizes best available science on management of moist mixed-conifer forests 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5
(Date:10/22/2014)... , Oct. 22, 2014 New test innovations ... in vitro diagnostic (IVD) test industry, especially as companies ... market researcher listed more than 25 testing innovations in ... the future of IVD products. Kalorama details the new approaches ... Worldwide Market for In Vitro Diagnostic Tests , ...
(Date:10/22/2014)... The Americas Inorganic Refrigerants Market report defines ... with analysis and forecast of revenue. , Browse ... Market report, to get an idea of the ... of the segmentation in the Americas inorganic refrigerants ... figures. , http://www.micromarketmonitor.com/market/americas-inorganic-refrigerants-4191654241.html , Inorganic ...
(Date:10/22/2014)... Massachusetts (PRWEB) October 22, 2014 ... announced the release of a new infographic, Understanding ... to create a beautifully designed, easy to follow informative ... transmission, areas of outbreak, symptoms and prevention. , "As ... discovered that the 2014 Ebola outbreak represents not only ...
(Date:10/22/2014)... Ras Al Khaimah, UAE (PRWEB) October 22, 2014 ... in game-changing life science and healthcare projects, announces the ... MBBS MRCGP DRCOG DCH to its advisory team. Dr. ... research advisory team. , A graduate of ... Dr. Siddiqui was subsequently degreed in medicine in 2001. ...
Breaking Biology Technology:Report: Radical New IVD Test Approaches Key To Growth 2Report: Radical New IVD Test Approaches Key To Growth 3The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 2The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 3Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2
Cached News: