HOME >> BIOLOGY >> NEWS
A new plant-bacterial symbiotic mechanism promising

The growth of most plants depends on the presence of sufficient amounts of nitrogen contained in the soil.

However, a family of plants, the legumes, is partially free of this constraint thanks to its ability to live in association with soil bacteria of the Rhizobium, genus, capable of fixing nitrogen from the air. When these bacteria come into contact with their host plant, they trigger in the roots the formation and development of organs, termed nodules, where they continue to live. This close relationship is symbiosis, which benefits both organisms involved: the plant supplies nutritive elements to the bacteria which in return pass on the nitrogen they have stored up.

These interactions improve crop yields of leguminous plants that are crucial for human diet (soybean, peas, ground nuts and so on) and as animal feed (alfalfa, clover, sainfoin). In addition, cultivation of legumes living in symbiotic association with bacteria can contribute to vegetation regeneration schemes on soils depleted in nitrogen owing to overexploitation, erosion or desertification. The plant cover thus formed can help achieve ecological restoration, by enriching the soils in nitrogen. However, the symbiotic processes studied predominantly concern the leguminous plants of temperate zones, very little those of the tropics.

The team from the IRDs Laboratoire des Symbioses Tropicales et Mditerranennes and its partners (1), taking as model a symbiosis between a tropical aquatic legume, Aeschynomene, and Bradyrhizobium, bacteria of the Rhizobia family, have just revealed a new mode of communication at molecular level between these two organisms. The bacteria of this original model have their own photosynthetic pathway, a unique property in the rhizobia (2). This special character confers on it the exceptional, rare ability to form nodules on the stems of its host-plant. The plant thus acquires the possibility of fixing much higher quantities of nitrogen than those usually mea
'"/>

Contact: Marie Guillaume-Signoret
guillaum@paris.ird.fr
33-148-037-607
Institut de Recherche Pour le Dveloppement
15-Jul-2007


Page: 1 2 3

Related biology news :

1. A new plant-bacterial symbiotic mechanism promising for crop applications
2. Herpes infection may be symbiotic, help beat back some bacteria
3. DOE JGI sequences, releases genome of symbiotic tree fungus
4. Study reveals classic symbiotic relationship between ants, bacteria
5. Weizmann Institute scientists discover a control mechanism for metastasis
6. New mechanism links smoking to lung damage
7. Identified mechanism in the malaria parasite to help it adapt to infected individuals
8. Identifying the mechanism behind a genetic susceptibility to type 2 diabetes
9. MIT IDs mechanism behind fear
10. Tracing Parkinsons lethal mechanism
11. Researchers shed light on mechanism of action used by anti-cancer drug

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/31/2018)... BELLINGHAM, Wash., and CARDIFF, Wales (PRWEB) , ... ... ... European Space Agency. Martha Sanchez, senior scientist, IBM Research. Jacklyn Novak, infrared materials ... that of Katherine Johnson, the NASA mathematician who just celebrated her 100th birthday. ...
(Date:8/29/2018)... ... August 29, 2018 , ... Ovation ... abnormalities using morphological assessment through artificial intelligence , A recent, international collaborative ... suggests that artificial intelligence (AI) models, applied to 2D images of ...
(Date:8/23/2018)... LINDA, Calif. (PRWEB) , ... August 21, 2018 ... ... to engineer the genomes of diverse cell types and species for the robust ... important research tool for the development of T-cell based immunotherapies, the study of ...
Breaking Biology News(10 mins):
(Date:8/29/2018)... ... August 28, 2018 , ... USDM Life Sciences ... life sciences and healthcare industries, announces that Manu Vohra will deliver a presentation at ... What: “How to Implement Box for GxP in 30 Days” , When: Thursday, ...
(Date:8/23/2018)... RENO/TAHOE, Nev. (PRWEB) , ... August 22, 2018 ... ... TrialKit ™ for Android on September 1st, making it the first fully-featured ... both iOS and Android devices. Combined, iOS and Android constitute 99 percent of ...
(Date:8/21/2018)... Conn. (PRWEB) , ... August 21, 2018 , ... The ... 40, an annual recognition of the fastest growing technology companies in Connecticut. This year’s ... be held on Wednesday, October 3, at the Connecticut Convention Center in Hartford. A ...
(Date:8/17/2018)... Calif. (PRWEB) , ... August 16, 2018 , ... ... genetic testing, announced their results from the AmbryShare project were published today in ... genes in the largest exome study ever conducted. , Every year hereditary breast ...
Breaking Biology Technology:
Cached News: