Navigation Links
Sex at zero gravity
Date:3/13/2013

This release is available in French.

University of Montreal researchers found that changes in gravity affect the reproductive process in plants. Gravity modulates traffic on the intracellular "highways" that ensure the growth and functionality of the male reproductive organ in plants, the pollen tube. "Just like during human reproduction, the sperm cells in plants are delivered to the egg by a cylindrical tool. Unlike the delivery tool in animals, the device used during plant sex consists of a single cell, and only two sperm cells are discharged during each delivery event," explained Professor Anja Geitmann of the university's Department of biology. "Our findings offer new insight into how life evolved on Earth and are significant with regards to human health, as a traffic jam on these highways that also exist in human cells can cause cancer and illnesses such as Alzheimer's."

The interior of animal and plant cells is like a city, with factoriescalled organellesdedicated to manufacturing, energy production and waste processing. A network of intracellular "highways" enables the communication between these factories and the delivery of cargo between them and between the inside of the cell and its external environment. Plant cells have a particularly busy highway system. "Researchers already knew that humans, animals and plants have evolved in response to Earth's gravity, and that they are able to sense it," Geitmann explained. "What we are still discovering is how the processes occurring within the cells of the human and plant bodies are affected by the more intense gravity, or hypergravity, that would be found on a large planet, or the microgravity that resembles the conditions on a space craft. Intracellular transport processes are particularly sensitive to disturbance, with dramatic consequences for cell functioning. How these processes are affe
'/>"/>

Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert  

Page: 1 2

Related biology news :

1. How plants sense gravity -- a new look at the roles of genetics and the cytoskeleton
2. What happens to plant growth when you remove gravity?
3. GOCEs second mission improving gravity map
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sex at zero gravity
(Date:7/11/2014)... increased risk of kidney injury related to the use ... mass of HES molecules, according to a report in ... International Anesthesia Research Society (IARS). , The "total mass ... on cultured human renal proximal tubule cells (PTCs), concludes ... of University Hospital Wrzburg, Austria. Other factorssuch as ...
(Date:7/11/2014)... type 1 can inhibit voltage-gated calcium channel, ... release. However, some scholars demonstrated that cannabinoid ... influx and increase neurotransmitter release. Dr. Yi ... to Tongji Medical College, Huazhong University of ... voltage-clamp and calcium imaging in cultured trigeminal ...
(Date:7/10/2014)... Fe, Albuquerque, and other major cities in New Mexico, ... treated municipal wastewater rather than precious potable water supplies. ... 40% of all golf courses receive treated effluent. Reusing ... , Additionally, golf courses and homeowners alike fertilize their ... fertilizer is nitrate. A New Mexico State University turfgrass ...
Breaking Biology News(10 mins):In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2'Tailored' water -- the latest in lawn care 2
... ,Communication Intelligence Corporation (OTC Bulletin Board: CICI) ("CIC"),a ... process,automation in the financial industry and the recognized ... of Michael Betts to,the CIC Board of Directors. ... experience in the insurance and,financial services industries and ...
... McConnell, Director of,National Intelligence and James R. Clapper, ... valuable insights into the intelligence,challenges of the future, ... Community 100 Day Plan for INTEGRATION and COLLABORATION. ... the Director of National Intelligence and the National,Defense ...
... IdentiPHI announces the launch of SAFmodule(TM) 3.1 ... Services (NMAS) biometric authentication methods, AUSTIN, ... brings,secure, easily managed biometric authentication to Novell(R) ... with Novell,s,Novell Modular Authentication Service (NMAS(TM)) security ...
Cached Biology News:Michael A. Betts, Seasoned Financial Services Executive, Joins CIC Board of Directors 2Michael A. Betts, Seasoned Financial Services Executive, Joins CIC Board of Directors 3IdentiPHI Re Launches SAFmodule Software to Secure Novell(R) Networks 2
(Date:7/10/2014)... A new study published today in the journal ... has found that time of day and sleep deprivation ... could be crucial when looking at the best time ... and heart disease, and for administering medicines effectively. , ... of Cancer Research, London, investigated the links between sleep ...
(Date:7/10/2014)... observed the fractional quantum Hall effect in bilayer graphene ... be tuned by an electric field. , The ... confined to thin sheets are exposed to large magnetic ... thousands of individual electrons behave as a single system. ... well established, many details of this collective behavior remain ...
(Date:7/10/2014)... spiders can sit upside down forever. Nanophysics makes sure of ... an article just published in Physical Review E . ... and spiders that seem to be able to sit still ... for many years. We will soon be able to buy ... gecko,s foot. But the fact is, sooner or later the ...
(Date:7/10/2014)... researchers at the University of Illinois at Urbana-Champaign ... the interplay of spin and heat at the ... spintronic devices for data storage and information processing. ... as spin-angular momentum. In a typical charge current, ... spin current," explained David Cahill, a professor of ...
Breaking Biology Technology:Time of day crucial to accurately test for diseases, new research finds 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3Even geckos can lose their grip 2University of Illinois study advances limits for ultrafast nano-devices 2
... Pa., June 22 Environmental Tectonics Corporation,s (OTC Bulletin ... announced that the Japan Ministry of Health, Labor and ... foreign manufacturer in Japan. , , ETC worked ... to help ensure that our monoplace hyperbaric chambers passed ...
... , BERLIN, NIMES, France and RICHMOND, Calif., June ... company, Cezanne, and Lumiphore Inc., a biotechnology leader ... in high-value applications, announced that they have signed ... in BRAHMS diagnostic tests. , , ...
... NEW YORK, June 22 NeoStem, Inc. (NYSE Amex: ... storage of adult stem cells for future medical need, was featured ... Street," on June 18, 2009. Also, on June 16, 2009, ... in a substantial Fortune Magazine article distributed by CNNMoney.com. ...
Cached Biology Technology:Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 2Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 3Environmental Tectonics Corporation's BioMedical Division Achieves Foreign Manufacturer Accreditation in Japan 4BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 2BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 3NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 2NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 3NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 4NeoStem Featured in Business Week; 'Promising' Adult Stem Cell Market Discussed in Fortune-CNNMoney.com Article 5
Medium for cryopreserving subcutaneous or omental preadipocytes...
... Exclusive ultra high yield technology is fast ... Amplifies aRNA for gene array analysis ... , Kits specific for templates ... promoters , All kits contain ...
Rad 51C Immunogen: His-tagged human Rad 51C, over-expressed in E. coli Storage: 4 C...
...
Biology Products: