Navigation Links
Mate choice in plants
Date:6/27/2008

Plants are very selective when it comes to choosing mates. Flowering plant pollination systems are clever devices for attracting pollinators like birds, ants, and insects, but there are also mechanisms for keeping out unwanted pollen. Some plants happily self-fertilize with their own pollen but others reject such pollen because of the deleterious effects of inbreeding. In these plants, their own pollen or that of close relatives is rejected if it lands on the female stigma. For all plants, the pollen of other species is undesirable, as it will result in aborted zygotes or infertile offspring. Plants have evolved various mechanisms for rejecting unwanted pollen. The self-incompatibility (SI) system, found in several plant families, including the Solanaceae, which includes tobacco, tomato, and eggplant, is the best studied. A number of components that function in the SI system have been identified, but the exact molecular mechanisms by which incompatible pollen is recognized and rejected and compatible pollen allowed to proceed to the ovary are still unknown. Understanding the molecular mechanisms of pollen recognition is important for designing novel plant breeding systems as well as ensuring safeguards against unwanted pollination by genetically modified crops.

Dr. Felipe Cruz Garca and his colleagues Karina Jimenez Duran, Grethel Busot, Claudia Ibarra Sanchez, and Bruce McClure have been investigating the components of the self-incompatibility system in tobacco. Dr. Cruz-Garcia, of the Departamento de Bioqumica, Facultad de Qumica, Universidad Nacional Autonoma de Mxico, will be presenting this work at a symposium on the Biology of Solanaceous Species at the annual meeting of the American Society of Plant Biologists in Mrida, Mexico (June 29, 11:00 AM).

In flowering plants, the female reproductive organ, the pistil, comprises the stigma, style, and ovary. The stigma catches pollen shed by the male anthers. If the pollen i
'/>"/>

Contact: Dr. Felipe Cruz-Garcia
fcg@servidor.unam.mx
555-622-5279
American Society of Plant Biologists
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Restoring fish populations leads to tough choice for Great Lakes Gulls
2. Human clones: New U.N. analysis lays out worlds choices
3. Choices and Challenges forum to address nuclear power issue
4. Facial attraction -- choice of sexual partner shaped the human face
5. Climate change could severely impact Californias unique native plants
6. Newly identified role for power plants in human cells could lead to targeted therapies
7. Reforestation using exotic plants can disturb the fertility of tropical soils
8. When plants think alike
9. Neural cell transplants may help those with Parkinsons disease
10. Ecologists tease out private lives of plants and their pollinators
11. Woody and aquatic plants pose greatest invasive threat to China
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... . The zebrafish, ... striking pattern of blue stripes alternating with golden stripes. Three ... yellow cells emerge during growth in the skin of the ... compose the characteristic colour pattern. ,While it was ... form proper stripes, the embryonic origin of the pigment cells ...
(Date:8/28/2014)... A Mayo Clinic researcher and his collaborators have ... and enhance the process of re-engineering cells for biomedical ... network biology methods to aid stem cell engineering. Details ... are described in two back-to-back papers in the journal ... broad range of uses for all types of cell-based ...
(Date:8/28/2014)... groups and clinicians is critical to the development ... of Georgia research. , A qualitative study of ... that role models for successful breastfeeding help positively ... "Mothers who received that support are more likely ... Alex Anderson, an associate professor in the College ...
Breaking Biology News(10 mins):How the zebrafish gets its stripes 2How the zebrafish gets its stripes 3New tool aids stem cell engineering for medical research 2Breastfeeding study shows need for effective peer counseling programs 2
... (Nolvadex®), which can become less effective over time, might ... a second drug, according to new research in mice ... part of the National Institutes of Health, and their ... issue of Cancer Cell*. , Tamoxifen has been used ...
... and fruit fly have so-called visual maps in the brain ... of millions of nerve cell contacts that need to be ... to see normally. It is generally thought that the complexity ... genetically programmed but requires activity by neurons or nerve cells ...
... of neural damage due to epilepsy show a reduced ... The researchers said their results suggest that therapies for ... alleviating the disorder. , In an article in the ... by Cell Press, Olle Lindvall and colleagues at Lund ...
Cached Biology News:Restoring tamoxifen sensitivity in resistant breast cancer cells 2Hard-wiring the fruit fly's visual system 2New neurons could act to alleviate epilepsy 2
(Date:8/29/2014)... Due to a misstatement posted by the ... Stem Cell Technology Center, LLC ( ASCTC ) was reported ... research that might benefit ALS patients. Because of ASCTC's ... cell technologies and therapeutic applications, FRC listed ASCTC as one ... donors who wish not to support research that requires the ...
(Date:8/28/2014)... August 28, 2014 Best Sanitizers, Inc., ... the food processing industry, is asking industry professionals to ... comparison of the E2 soap they’re currently using to ... Soap . Hand hygiene is critical to fighting ... processing environment. Six key criteria are identified to evaluate ...
(Date:8/28/2014)... spintronics, an electronic which is not only based ... their spin and the spin-related magnetism. Spin-charge converters ... and vice versa. Recently, the research group of ... at Johannes Gutenberg University Mainz in collaboration with ... for the first time realised a new, efficient ...
(Date:8/28/2014)... ATLANTA , Aug. 28, 2014   SunTrust ... of three industry veterans to its equity research ... "Our ongoing expansion in equity research demonstrates ... with unique insights to enhance their investment decision ... Equities at STRH.  "We continue to make significant ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 3Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2A new, tunable device for spintronics 2A new, tunable device for spintronics 3SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 3
... PHILADELPHIA and LONDON, June 9 /PRNewswire/ -- ... today that, despite difficult economic times, renewals of ... existing customers have even added new content to their ... the world,s largest citation database, providing researchers, administrators, faculty ...
... Personalized Medicine Company in Next Phase of Growth , , ... personalized medicine company, announced today that James S. ... CEO. , , Burns comes to AssureRx with more ... science and technology for pharmaceutical, diagnostic, and biotech companies. Most recently, ...
... MARINO, Calif., June 9 Epeius Biotechnologies, Rexin-G is the ... you will, a tiny particle that can travel freely within ... that have spread far and wide. Imagine an entire ... high concentrations within the flagrant, otherwise intractable tumors with one ...
Cached Biology Technology:Web of Science(R) Renewals Remain Strong Despite Tough Economic Climate 2AssureRx Adds New CEO 2The World's Smallest Hero! Rexin-G, Targeted Therapy for Metastatic Cancers 2
... Level 2 Detection System combines the ... bonding principle and Signets unique formulation ... specificity and reliablility. Signet reagents will ... manual and automated protocols. ,Signets USA ...
... 2 Detection System combines the indirect ... principle and Signets unique formulation of ... and reliablility. Signet reagents will achieve ... and automated protocols. ,Signets USA ...
6X DNA Gel Loading Buffer is intended for gel electrophoresis of DNA fragments or PCR products....
Xanthine Oxidase (Bovine Buttermilk). Monospecific by IEP. Some cross reactivity with Xanthine Oxidase of other species and tissues may occur....
Biology Products: