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

ific (TTS), 120 kDa glycoprotein (120K), and pistil extension-like protein III (PELPIII), may play a role in movement of S-RNases into the pollen tube vacuoles and, if necessary, into the pollen tube cytoplasm, where they destroy RNA.

Cruz-Garcia and his colleagues have been investigating the non-S-locus factors in the tobacco species Nicotiana alata. They have recently identified and characterized another factor, Stigma Expressed Protein (NaStEP) in N. alata. Sequencing revealed that it is homologous to proteinase inhibitors, enzymes that prevent protein degradation, and that it contains a sequence that targets it to the vacuoles of unpollinated stigmas. If incompatible pollen lands on these stigmas, NaStEP is released into the stigmatic exudates where it associates with pollen tubes. If the NaStEP gene is silenced, the SI rejection system breaks down, so NaStEP clearly plays a role in the pollen rejection mechanism.

Because of their immobility, plants face numerous challenges to ensure reproductive success and genetic diversity. Remarkably, they have evolved more than one system of mate choice, and components of the best studied are still being discovered. Knowledge of these systems may help us engineer plant breeding systems more precisely to achieve greater yields and to provide built-in safeguards for preventing inadvertent pollination by and in pest or insecticide resistant crops or those bred to produce drugs or industrial materials.


'/>"/>

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:9/30/2014)... engineers, led by Clemson University associate professor Brian ... from the U.S. Department of Energy,s Experimental Program ... positive impact on South Carolina in the advancement ... , "Understanding the scientific and engineering needs for ... nuclear technologies is imperative if South Carolina is ...
(Date:9/30/2014)... DURHAM, N.C. -- Pollution in urban and farm runoff ... a new study finds. , The study, published ... shows that nitrogen in the runoff ends up in ... tumors on the animals, eyes, flippers and internal organs. ... and the National Oceanic and Atmospheric Administration (NOAA) conducted ...
(Date:9/30/2014)... German . ... risky situations such as exposure to predators. Researchers from ... a long-term study on different populations of great tits ... ambient temperature. High metabolic rates and low temperatures were ... birds were more likely to approach potential predators. , ...
Breaking Biology News(10 mins):Researchers get $5.25 million to advance nuclear technologies in South Carolina 2Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Risky metabolism 2
... Korea, February 25, 2013The Global Agenda Council on Biotechnology, ... Forum (WEF), which is composed of the world,s leading ... the council has indentified "ten most important biotechnologies" which ... nutrition, and health. These new technologies, the council said, ...
... a new so-called pseudogene that regulates the tumour-suppressing PTEN ... to control PTEN to reverse the tumour process, make ... prevent the development of resistance. The findings, which are ... Molecular Biology , can be of significance in the ...
... DALLAS Feb. 24, 2013 The Children,s ... deepened the understanding of the environment within bone marrow ... setting for specialized blood-forming cells that produce the infection-fighting ... cells. The research found that cells called early ...
Cached Biology News:Top 10 ways biotechnology could improve our everyday life 2Top 10 ways biotechnology could improve our everyday life 3Top 10 ways biotechnology could improve our everyday life 4New type of gene that regulates tumor suppressor PTEN identified 2Scientists find bone-marrow environment that helps produce infection-fighting T and B cells 2
(Date:10/1/2014)... Award winning unified communications (UC) ... new-hosted collaboration bundles that combine next generation communication ... experiences for low, flat rate fees. With ... have optimized solutions to meet their technology needs. ... only minutes (1K, 5K, 10K increments) or audio ...
(Date:10/1/2014)... -- This report analyzes the worldwide markets ... the following Product Segments: Proteases, Polymerases, Carbohydrases, ... also analyzed are Pharmaceuticals & Diagnostics, Research/Biotechnology, ... separate comprehensive analytics for the US, Canada, ... America. Annual estimates and forecasts are provided ...
(Date:9/30/2014)... is available in German . ... Universitt Mnchen (TUM) have demonstrated a new kind of ... that future computer chips could be based on three-dimensional ... main enabling technology of the semiconductor industry CMOS ... TUM researchers and collaborators at the University of Notre ...
(Date:9/30/2014)... Shimadzu Scientific Instruments has released the DSES-1000 long-travel ... for measuring displacement in rubber and other soft ... distance, the DSES-1000 can measure elongations up to ... mm. In addition, it achieves +/- 0.2 percent ... +/- 100 µm below 50-mm stroke. , The ...
Breaking Biology Technology:SoundConnect Launches New Audio, Web and Video Bundles 2Global Specialty Enzymes Industry 2Global Specialty Enzymes Industry 3Global Specialty Enzymes Industry 4Global Specialty Enzymes Industry 5Global Specialty Enzymes Industry 6Global Specialty Enzymes Industry 7Global Specialty Enzymes Industry 8Global Specialty Enzymes Industry 9Global Specialty Enzymes Industry 10Global Specialty Enzymes Industry 11Global Specialty Enzymes Industry 12Global Specialty Enzymes Industry 13Global Specialty Enzymes Industry 14Global Specialty Enzymes Industry 15Global Specialty Enzymes Industry 16Global Specialty Enzymes Industry 17Global Specialty Enzymes Industry 18Global Specialty Enzymes Industry 19Global Specialty Enzymes Industry 20Global Specialty Enzymes Industry 21Global Specialty Enzymes Industry 22Global Specialty Enzymes Industry 23Global Specialty Enzymes Industry 24Global Specialty Enzymes Industry 25Global Specialty Enzymes Industry 26A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2
... and interact.  That,s the marketing mantra at ... creator of the best-selling children,s FireFly™ ... of the Binaca™ brand.   ...   http://www.newscom.com/cgi-bin/prnh/20101006/LA77977LOGO ) The company has ...
... The Journal of Cell Biology (JCB) and The ... of the next version of the JCB DataViewer, the ... in Dec. 2008, the JCB DataViewer ( http://jcb-dataviewer.rupress.org ) ... data formats and provide new functionality for its users. ...
... SAN DIEGO, Oct. 6 Sangart, Inc., today announced ... from the U.S. Department of Defense to support the ... MP4 molecule, an investigational biopharmaceutical product designed to enhance ... targeted oxygen delivery to the capillaries in severely injured ...
Cached Biology Technology:A 'Fresh' Approach to Marketing: Dr. Fresh™, Inc. Goes Guerilla With Internet-Based Campaigns 2Glencoe Software and The Journal of Cell Biology Pioneer Online Publishing of Scientific Image Data: New Version of JCB DataViewer Released 2Glencoe Software and The Journal of Cell Biology Pioneer Online Publishing of Scientific Image Data: New Version of JCB DataViewer Released 3Sangart, Inc. Receives $1.1 Million Grant Award from the United States Department of Defense for Further Development of MP4 Molecule in Trauma 2
... ShortCut RNase III, used with its ... into a heterogeneous mix of short (1825 ... interference in mammalian cells. 1.3 units (1 ... to convert 1 g of dsRNA into ...
...
EZ-Tn5™ Transposase is designed for use with our pMOD™ series of vectors as well as any EZ-Tn5™ transposon system....
... PBL's bioassays for interferons are cytopathic effect ... assays. Sample types include; tissue culture supernatents; ... In these assays, one unit is defined as ... reduce the cytopathic effect of viral infection by ...
Biology Products: