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)... Cancer constantly wages war on the human body. ... a stalemate. In pancreatic cancer, this stalemate—known as ... becoming aggressively malignant, a phenomena that is poorly ... in the laboratory of Salvatore Torquato, a Professor ... the conditions surrounding tumor dormancy and the switch ...
(Date:10/16/2014)... cultivated efficiently, they are anything but sustainable: environmental ... cultivation is becoming increasingly evident. Despite their disadvantages, ... are regarded as the sole possibility of achieving ... finds Bernhard Schmid, an ecology professor at the ... of agriculture and forestry. After all, a new ...
(Date:10/15/2014)... , Oct. 15, 2014 Sandata Technologies, ... home and community-based care, today announced it released ... Sandata,s Santrax® Electronic Visit Verification™ Solution (EVV™)  for ... a home health company founded in 1996 and ... . The study details the ...
Breaking Biology News(10 mins):Modeling tumor dormancy 2Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3Sandata Announces Case Study with Quality Care Services, Inc. 2
(Date:10/22/2014)... , Oct. 22, 2014 Nuvilex, Inc. ... approximately 400 million people worldwide are living with diabetes, ... people by 2030.  The global market for diabetes treatments ... approximately 330,000 people worldwide died from pancreatic cancer.  Pancreatic ... due to cancer in the United States ...
(Date:10/20/2014)... The report “Pharmacy Automation Systems Market ... Labeling Systems, Table-top Counters) by End-user (Inpatient Pharmacy ... Trends to 2019” analyzes and studies the major ... Europe, Asia-Pacific, and the Rest of the World ... figures spread through 300 pages and in-depth TOC ...
(Date:10/20/2014)... PARK, Calif. , Oct. 20, 2014 /PRNewswire/ ... today that the Company has signed a Notice ... of Regenerative Medicine (CIRM), effective October 1, 2014.  ... Clinical Development payments and the release of additional ... million CIRM grant award for clinical development of ...
(Date:10/20/2014)... Md. , Oct. 20, 2014  GenVec, Inc. (NASDAQ: ... Zola P. Horovitz , Ph.D., from its board of directors ... board in August 2003, and served as its chairman from ... served on the Nominating and Corporate Governance and Audit Committees ... for more than a decade of dedicated service to GenVec, ...
Breaking Biology Technology:Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 2Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 3Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 4Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Zola P. Horovitz To Retire From GenVec Board 2
Cached News: