Boron tolerance and enhancement of boron toxicity by chloride ions in alkali sacaton during germination ofSporobolus airoides Torr

1975 ◽  
Vol 31 (4) ◽  
pp. 427-428 ◽  
Author(s):  
S. Z. Hyder ◽  
Shamsa Yasmin
Keyword(s):  
Chloride Ions ◽  
Boron Toxicity ◽  
Boron Tolerance

Effects of boron toxicity on root and leaf anatomy in two Citrus species differing in boron tolerance

Trees ◽  
2014 ◽  
Vol 28 (6) ◽  
pp. 1653-1666 ◽  
Author(s):  
Jing-Hao Huang ◽  
Zi-Jian Cai ◽  
Shou-Xing Wen ◽  
Peng Guo ◽  
Xin Ye ◽  
...  
Keyword(s):  
Leaf Anatomy ◽  
Boron Toxicity ◽  
Citrus Species ◽  
Boron Tolerance ◽  
Root And Leaf Anatomy

scholarly journals Boron Hyperaccumulation Mechanisms in Puccinellia distans as Revealed by Transcriptomic Analysis

2017 ◽  
Author(s):  
Saniye Elvan Öztürk ◽  
Mehmet Göktay ◽  
Canan Has ◽  
Mehmet Babaoğlu ◽  
Jens Allmer ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Crop Productivity ◽  
Boron Toxicity ◽  
Arid Environments ◽  
Boron Tolerance ◽  
Puccinellia Distans ◽  
Accumulation Mechanism ◽  
High Concentrations ◽  
Transcriptomic Changes ◽  
Boron Transporter

AbstractBoron is an essential plant micronutrient; but is toxic at high concentrations. Boron toxicity can severely affect crop productivity in arid and semi-arid environments. Puccinellia distans (Jacq.) Par1., common alkali grass, is found throughout the world and can survive under boron concentrations that are lethal for other plant species. In addition, P. distans can accumulate very high levels of this element. Despite these interesting features, very little research has been performed to elucidate the boron tolerance mechanism in this species. In this study, P. distans samples were analyzed by RNA sequencing to identify genes related to boron tolerance and hyperaccumulation. Abundance levels of selected differentially expressed transcripts were validated by real-time PCR. The results indicated that the hyperaccumulation mechanism of P. distans involves many transcriptomic changes including those that lead to: alterations in the malate pathway, changes in cell wall components that allow sequestration of excess boron without toxic effects, and increased expression of at least one putative boron transporter and two putative aquaporins. Elucidation of the boron accumulation mechanism is important to develop approaches for bioremediation of boron contaminated soils.

scholarly journals Cross species multi-omics reveals cell wall sequestration and elevated global transcription as mechanisms of boron tolerance in plants

2020 ◽  
Author(s):  
Guannan Wang ◽  
Sandra Feuer DiTusa ◽  
Dong-Ha Oh ◽  
Achim D. Herrmann ◽  
David G. Mendoza-Cozatl ◽  
...  
Keyword(s):  
Boric Acid ◽  
Crop Production ◽  
Cellular Responses ◽  
Boron Toxicity ◽  
Boron Tolerance ◽  
Metabolomics Data ◽  
Metabolic Functions ◽  
Adaptive Mechanisms ◽  
Genetic Responses ◽  
Boron Transporter

AbstractBoron toxicity is a worldwide problem for crop production, yet we have only a limited understanding of the genetic responses and adaptive mechanisms to this environmental stress in plants. Here we identified responses to excess boron in boron stress-sensitive Arabidopsis thaliana and its boron stress-tolerant extremophyte relative Schrenkiella parvula using comparative genomics, transcriptomics, metabolomics, and ionomics. S. parvula maintains a lower level of total boron and free boric acid in its roots and shoots and sustains growth for longer durations than A. thaliana when grown with excess boron. S. parvula likely excludes boron more efficiently than A. thaliana, which we propose is partly driven by BOR5, a boron transporter that we functionally characterized in the current study. Both species allocate significant transcriptomic and metabolomic resources to enable their cell walls to serve as a partial sink for excess boron, particularly discernable in A. thaliana shoots. We provide evidence that the S. parvula transcriptome is pre-adapted to boron toxicity, exhibiting substantial overlap with the boron-stressed transcriptome of A. thaliana. Our transcriptomic and metabolomics data also suggest that RNA metabolism is a primary target of boron toxicity. Cytoplasmic boric acid likely forms complexes with ribose and ribose-containing compounds critical to RNA and other primary metabolic functions. A model depicting some of the cellular responses that enable a plant to grow in the presence of normally toxic levels of boron is presented.

An investigation of boron-toxicity in leaves of two citrus species differing in boron-tolerance using comparative proteomics

2015 ◽  
Vol 123 ◽  
pp. 128-146 ◽  
Author(s):  
Wen Sang ◽  
Zeng-Rong Huang ◽  
Yi-Ping Qi ◽  
Lin-Tong Yang ◽  
Peng Guo ◽  
...  
Keyword(s):  
Comparative Proteomics ◽  
Boron Toxicity ◽  
Citrus Species ◽  
Boron Tolerance

Boron tolerance in annual medics (Medicago spp.)

2012 ◽  
Vol 63 (9) ◽  
pp. 886 ◽  
Author(s):  
J. H. Howie
Keyword(s):  
Rating System ◽  
Boron Toxicity ◽  
Alkaline Soils ◽  
Boron Tolerance ◽  
Wide Range ◽  
Commercial Cultivars ◽  
Leaf Necrosis ◽  
Annual Medics ◽  
Leaf Symptoms ◽  
Pasture Legume

Boron (B) is present at toxic levels in the subsoils of much of the semiarid south-eastern Australian cereal-livestock zone. Boron toxicity is typically associated with alkaline soils, where annual medics (Medicago spp.) are generally the best-adapted pasture legume. New medic cultivars have been developed for which there is no published B tolerance information. Five species of annual medic represented by 13 cultivars were grown in soil amended with B and evaluated for B tolerance. A rating system based on expression of symptoms was modified from earlier research. There was a wide range of response to B, both between and within species. Cultivars varied widely in their expression of symptoms; from showing no or few leaf symptoms (tolerant) to significant leaf necrosis (very sensitive). An integrated summary of both published and previously, unpubl. data for these and other medics is presented to provide a comprehensive and up-to-date comparison between different species and most commercial cultivars. This information will be useful for plant breeders, agronomists and farmers who manage soils with high B levels.

Junction of the Epithelium and Lamina Propria of the Bovine Rumen Mucosa

1967 ◽  
Vol 25 ◽  
pp. 68-69
Author(s):  
Al W. Stinson
Keyword(s):  
Osmium Tetroxide ◽  
Squamous Epithelium ◽  
Short Chain Fatty Acids ◽  
Chloride Ions ◽  
Fermentation Products ◽  
Ruminant Species ◽  
Protective Shield ◽  
Stratified Squamous Epithelium ◽  
Lead Hydroxide ◽  
Acetic Acids

The stratified squamous epithelium which lines the ruminal compartment of the bovine stomach performs at least three important functions. (1) The upper keratinized layer forms a protective shield against the rough, fibrous, constantly moving ingesta. (2) It is an organ of absorption since a number of substances are absorbed directly through the epithelium. These include short chain fatty acids, potassium, sodium and chloride ions, water, and many others. (3) The cells of the deeper layers metabolize butyric acid and to a lesser extent propionic and acetic acids which are the fermentation products of rumen digestion. Because of the functional characteristics, this epithelium is important in the digestive process of ruminant species which convert large quantities of rough, fibrous feed into energy.Tissue used in this study was obtained by biopsy through a rumen fistula from clinically healthy, yearling holstein steers. The animals had been fed a typical diet of hay and grain and the ruminal papillae were fully developed. The tissue was immediately immersed in 1% osmium tetroxide buffered to a pH of 7.4 and fixed for 2 hrs. The tissue blocks were embedded in Vestapol-W, sectioned with a Porter-Blum microtome with glass knives and stained with lead hydroxide. The sections were studied with an RCA EMU 3F electron microscope.

Factors Influencing the Separation of Glu-Plasminogen Affinity Forms I and II by Affinity Chromatography

1984 ◽  
Vol 52 (03) ◽  
pp. 347-349 ◽  
Author(s):  
Daan W Traas ◽  
Bep Hoegee-de Nobel ◽  
Willem Nieuwenhuizen
Keyword(s):  
Affinity Chromatography ◽  
Dissociation Constants ◽  
Ionic Composition ◽  
Chloride Ions ◽  
Factors Influencing ◽  
Two Factors ◽  
Human Plasminogen

SummaryNative human plasminogen, the proenzyme of plasmin (E. C. 3.4.21.7) occurs in blood in two well defined forms, affinity forms I and II. In this paper, the feasibility of separating these forms of human native plasminogen by affinity chromatography, is shown to be dependent on two factors: 1) the ionic composition of the buffer containing the displacing agent: buffers of varying contents of sodium, Tris, phosphate and chloride ions were compared, and 2) the type of adsorbent. Two adsorbents were compared: Sepharose-lysine and Sepharose-bisoxirane-lysine. Only in the phosphate containing buffers, irrespective of the type of adsorbent, the affinity forms can be separated. The influence of the adsorbent can be accounted for by a large difference in dissociation constants of the complex between plasminogen and the immobilized lysine.

Effect of Formic Acid on Corrosion Behavior of STBA24 Low-Alloyed Steel and Its Weldment in Simulated Boiler Water Containing Chloride Ions

2020 ◽  
Vol 61 (9) ◽  
pp. 1775-1781
Author(s):  
Li-Bin Niu ◽  
Shoichi Kosaka ◽  
Masaki Yoshida ◽  
Yusuke Suetake ◽  
Kazuo Marugame
Keyword(s):  
Formic Acid ◽  
Corrosion Behavior ◽  
Chloride Ions ◽  
Alloyed Steel ◽  
Boiler Water ◽  
Low Alloyed Steel
Sign in / Sign up

Export Citation Format

Share Document