Navigation Links
Plants spice up their sex life with defensins
Date:6/1/2010

Since the beginning, plants and animals have deployed various mechanisms to fight pathogens. Proteins have always played an important part in this armoury, and a broad variety of defensin proteins have become part of the immune system of plants, insects and other animals except mammals. Now scientists from Regensburg discovered that those proteins also play a role in the "sex life" during the fertilization process of plants. These findings will be published next week in the online, open access journal PLoS Biology.

The research team, led by Dr. Thomas Dresselhaus from the Regensburg Center of Biochemistry and Biophysics, showed that special forms of defensins are released by the egg apparatus in maize to open up potassium-ion channels in the male partner the pollen tube resulting in an explosive release of male sperm cells. This process is a pre-requisite for the fertilization that follows.

The findings led to the assumption that the first flowering plants that came into being about 170 million years ago adapted a pathogen-fighting mechanism to promote interaction between male and female cells and release sperm cells for fertilization. These results shed a completely new light on the evolution of processes necessary for the fertilization of flowering plants, and may lead to new possibilities for overcoming the barrier between crops that cannot yet be crossed.


'/>"/>

Contact: Dr. Thomas Dresselhaus
thomas.dresselhaus@biologie.uni-regensburg.de
Public Library of Science
Source:Eurekalert

Page: 1

Related biology news :

1. Technique yields potential biological substitute for dental implants
2. When plants attract bugs, it may be their own fault
3. CO2 effects on plants increases global warming
4. Study gives green light to plants role in global warming
5. Study gives green light to plants’ role in global warming
6. Gene discovery may lead to new varieties of soybean plants
7. Production of biofuels could benefit by controlling the types of cells that develop in plants
8. New evidence in plants shows micro-RNA can move
9. 10 most wanted plants inspected for clues to climate change
10. Cell transplants may benefit children with cerebral palsy
11. Scientists find new genes for cancer, other diseases in plants, yeast and worms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... Strict laws against distracted driving and the ... American and European automotive sector towards gesture recognition technologies. ... that are intuitive and able to retrieve information with ... New analysis from Frost & Sullivan,s Strategic ... Europe and North America ...
(Date:11/18/2014)... 2014   News Highlights: ... develop The Partners Data Lake, an agile data ... Lake will allow researcher and clinicians to explore ... the lives of patients , The Partners ... across the Partners system, breaking down physical barriers ...
(Date:11/12/2014)... BEACH GARDENS, Fla. , Nov. 12, 2014 /PRNewswire/ ... solutions, announced today that its U.are.U ® fingerprint ... retail bakery chain in Central Mexico ... in June 2014 to eliminate payroll issues caused by ... Prior to installing the U.are.U fingerprint readers, Montparnasse relied ...
Breaking Biology News(10 mins):Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
... Institutes have discovered that environmental factors critically influence the ... cell--that is derived from adult skin cells. This discovery ... also advancing science closer to stem cell-based therapies to ... Senior Investigator Shinya Yamanaka, MD, PhD, have for the ...
... 4 July 2012 The Raffles Museum of Biodiversity ... Faculty of Science today launched a new book titled ... the precious biodiversity found in Singapore,s rainforests and the ... RMBR also introduced the "Digital Nature Archive of Singapore" ...
... out that the olfactory system in hermit crabs is ... While flies have a very sensitive sense of smell ... the air, crabs recognize only a few odors, such ... seawater. Humidity significantly enhanced electrical signals induced in their ...
Cached Biology News:Gladstone scientists identify critical process in stem cell development 2Gladstone scientists identify critical process in stem cell development 3NUS launches new book on Singapore's rainforests and new free digital nature archive 2Humidity increases odor perception in terrestrial hermit crabs 2Humidity increases odor perception in terrestrial hermit crabs 3
(Date:11/24/2014)... , UAE, November 24, 2014 ... Hamdan Bin Rashid Al Maktoum Awards for Medical Sciences", ... Dubai, United Arab Emirates , on 15 ... ) , The Carter Center which won ... is actively involved in numerous programs that aim to ...
(Date:11/24/2014)... Nov. 24, 2014 VolitionRx Limited (OTCQB: ... for cancer and other conditions, today announced that data from ... Science for Business BioWin Day 2014, being held November 26, ... come from VolitionRx,s lung cancer pilot study, the samples for ... Hospitalier Universitaire (CHU) de Liege in Belgium ...
(Date:11/24/2014)... SAN FRANCISCO, Calif. , Nov. 24, 2014   ... that Bonnie H. Anderson , president and chief executive ... Piper Jaffray 26 th Annual Healthcare Conference on Tuesday, ... New York . The live audio webcast ... at http://investor.veracyte.com . Please connect to the website at ...
(Date:11/24/2014)... November 24, 2014 Continental Clinical ... populations into clinical trials at its mid-Atlantic late-phase ... “Continental was created with the idea of closing ... fundamental role in medical advances," said Continental's CEO, ... experiment to the immortal cell line of Henrietta ...
Breaking Biology Technology:Five US Winners Among Recipients of Hamdan Medical Awards 2VolitionRx to Present Positive Data from Pilot Lung Cancer Study at BioWin Day 2014 2VolitionRx to Present Positive Data from Pilot Lung Cancer Study at BioWin Day 2014 3VolitionRx to Present Positive Data from Pilot Lung Cancer Study at BioWin Day 2014 4VolitionRx to Present Positive Data from Pilot Lung Cancer Study at BioWin Day 2014 5VolitionRx to Present Positive Data from Pilot Lung Cancer Study at BioWin Day 2014 6Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 2At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 3
... 11 /PRNewswire-Asia/ -- Sinovac Biotech Ltd.,(NYSE Amex: SVA ... it will host a conference call on Wednesday, August 19, ... financial results for the period,ended June 30, 2009 and provide ... To access the conference call, please dial 1-877-407-4018 (USA) ...
... Peripheral Drug-Eluting Stent Now Available in Europe , ... (NASDAQ: ANPI , TSX: ANP) today announced ... reported CE Mark approval and limited commercial launch of ... approval represents a global landmark in bringing drug-eluting stent ...
... , , , ... Systems today announced that BD Biosciences, a segment of BD ... its Search and Pathway Navigation technologies into its new website. ... Biosciences will enable its research customers to quickly and easily ...
Cached Biology Technology:Sinovac to Host Conference Call to Report 2009 Second Quarter Financial Results 2Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 2Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 3Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 4Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 5Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 6Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 7Angiotech's Licensee, Cook Medical, Announces CE Mark Approval and European Launch of the Zilver(R) PTX(R) Stent 8Ingenuity's Technology Powers BD Cell Pathways Tool on New BD Biosciences Website 2
...
DONOR BOVINE SERUM AND PLASMA...
Full-length cDNA 5-PRIME end of clone CS0DE013YM09 of Placenta of Homo sapiens (human). [Source:Uniprot/SPTREMBL;Acc:Q86TS7] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
No description available in Ensembl. Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Biology Products: