| Why boron? | |
| | |
MedLine Citation:
|
PMID: 15694285 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
It is now more than 80 years since boron was convincingly demonstrated to be essential for normal growth of higher plants. However, its biochemical role is not well understood at the moment. Several recent reviews propose that B is implicated in three main processes: keeping cell wall structure, maintaining membrane function, and supporting metabolic activities. However, in the absence of conclusive evidence, the primary role of boron in plants remains elusive. Besides plants, growth of specific bacteria, such as heterocystous cyanobacteria and the recently reported actinomycetes of the genus Frankia, requires B, particularly for the stability of the envelopes that control the access of the nitrogenase-poisoning oxygen when they grow under N2-fixing conditions. Likewise, a role for B for animal embryogenesis and other developmental processes is being established. Finally, a new feature of the role of boron comes from signaling mechanisms for communication among bacteria and among legumes and rhizobia leading to N2-fixing symbiosis, and it is possible that new roles for B, based on its special chemistry and its interaction with Ca would appear in the world of signal transduction pathways. In conclusion, the diversity of roles played by B might indicate that either the micronutrient is involved in numerous processes or that its deficiency has a pleiotropic effect. The arising question is why such an element? Since all of the roles clearly established for B are related to its capacity to form diester bridges between cis-hydroxyl-containing molecules, we propose that the main reason for B essentiality is the stabilization of molecules with cis-diol groups turning them effective, irrespectively of their function. |
| | |
Authors:
|
Luis Bolaños; Krystyna Lukaszewski; Ildefonso Bonilla; Dale Blevins |
Related Documents
:
|
23231455 - Altered expression of the ptr/nrt1 homologue osptr9 affects nitrogen utilization effici... 12836045 - Nitrate-specific and cytokinin-mediated nitrogen signaling pathways in plants. 19772575 - Distinct changes in soybean xylem sap proteome in response to pathogenic and symbiotic ... 19820345 - Plant hormone conjugation: a signal decision. 18031795 - Estimation of cumulative aquatic exposure and risk due to silver: contribution of nano-... 20226595 - Prevalence of parasites in soil and dog feces according to diagnostic tests. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Review Date: 2005-01-18 |
Journal Detail:
|
Title: Plant physiology and biochemistry : PPB / Société française de physiologie végétale Volume: 42 ISSN: 0981-9428 ISO Abbreviation: Plant Physiol. Biochem. Publication Date: 2004 Dec |
Date Detail:
|
Created Date: 2005-02-07 Completed Date: 2005-04-21 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9882449 Medline TA: Plant Physiol Biochem Country: France |
Other Details:
|
Languages: eng Pagination: 907-12 Citation Subset: IM |
Affiliation:
|
Departamento de Biologia, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain. luis.bolarios@uam.es |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Boron
/
chemistry* Calcium / chemistry Cell Wall / chemistry*, physiology Frankia / chemistry, physiology Nitrogen Fixation / physiology* Plants / chemistry* Rhizobium / chemistry, physiology Signal Transduction / physiology Symbiosis / physiology* |
| Chemical | |
Reg. No./Substance:
|
7440-42-8/Boron; 7440-70-2/Calcium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Antioxidant defense in a lead accumulating plant, Sesbania drummondii.
Next Document: Leukocyte adhesion: what's the catch?