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:7/31/2014)... can affect animal movement and communication, with unknown ecological ... and the cole Pratique des Hautes tudes (EPHE) CRIOBE ... development and increases larval mortality in sea hares. , ... used in this study) usually hatch from their ... alga but this study, conducted in a coral reef ...
(Date:7/30/2014)... uses reversible epigenetic processes to regulate its genes, and ... a picture of the genome regulation taking place in ... Genome Biology and illustrates how the truffle ... genes,. The authors say this may shed light on ... Black truffles (Tuber melanosporum), also known as Prigord truffles, ...
(Date:7/30/2014)... The American Chemical Society (ACS) announced today that David ... ACS Biomaterials Science & Engineering as editor-in-chief. ... 2015, the new journal will feature high-quality research in ... engineered or naturally derived materials that interact with living ... as it reflects the tremendous growth in the field ...
Breaking Biology News(10 mins):Boat noise impacts development and survival of sea hares 2How black truffles deal with the jumpers in their genome 2ACS Biomaterials Science & Engineering: Brand-new journal launches in 2015, names editor 2
(Date:7/31/2014)... organs and even the entire body to visualize long-range ... has been a long-time dream of biologists. A study ... the journal Cell has now made that ... organs, bodies, and human tissue biopsies transparent, while keeping ... pave the way for a better understanding of brain-body ...
(Date:7/31/2014)... Indiana University Bloomington have described the self-assembly of ... with potential value for the field of organic ... cells. , Their paper, "Anion-Induced Dimerization of 5-fold ... Self-Assembled Crystals," has been published online by ... Society of Chemistry. It is the first collaboration ...
(Date:7/31/2014)... , July 31, 2014 ... Market Research "Quantum Dots Market - Global Industry Analysis, ... the market was valued at USD 88.5 million in ... by 2023, growing at a CAGR of 53.8% from ... Dots Market Report at  http://www.transparencymarketresearch.com/quantum-dots.html Increasing ...
(Date:7/31/2014)... July 31, 2014 Graphite Metallizing Corporation ... temperature oven carts. These bearings are uniquely suited to ... ball bearings because of the high temperatures . ... help from the design engineers at Graphite Metallizing to ... process. During their manufacturing operation, pans containing blocks of ...
Breaking Biology Technology:See-through organs and bodies will accelerate biomedical discoveries 2Chemists demonstrate 'bricks-and-mortar' assembly of new molecular structures 2Chemists demonstrate 'bricks-and-mortar' assembly of new molecular structures 3Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 2Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 3Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 4Graphite Metallizing Announces Bearings for High Temperature Oven Applications 2Graphite Metallizing Announces Bearings for High Temperature Oven Applications 3
Cached News: