Rice acclimation to soil flooding: Low concentrations of organic acids can trigger a barrier to radial oxygen loss in roots

2019 ◽  
Vol 42 (7) ◽  
pp. 2183-2197 ◽  
Author(s):  
Timothy David Colmer ◽  
Lukasz Kotula ◽  
Al Imran Malik ◽  
Hirokazu Takahashi ◽  
Dennis Konnerup ◽  
...  
Keyword(s):  
Organic Acids ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Soil Flooding ◽  
Low Concentrations

Rice and Phragmites : effects of organic acids on growth, root permeability, and radial oxygen loss to the rhizosphere

2001 ◽  
Vol 88 (8) ◽  
pp. 1359-1370 ◽  
Author(s):  
Jean Armstrong ◽  
William Armstrong
Keyword(s):  
Organic Acids ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Root Permeability

Effects of organic acids on the formation of the barrier to radial oxygen loss in roots of Hordeum marinum

2014 ◽  
Vol 41 (2) ◽  
pp. 187 ◽  
Author(s):  
Lukasz Kotula ◽  
Timothy David Colmer ◽  
Mikio Nakazono
Keyword(s):  
Organic Acids ◽  
Caproic Acid ◽  
Extension Rate ◽  
Root Porosity ◽  
Monocarboxylic Acids ◽  
Oxygen Loss ◽  
Barrier Formation ◽  
Low Concentrations ◽  
Gas Space ◽  
Total Concentrations

A barrier to radial O2 loss (ROL) is an adaptive trait of many wetland plants, yet the signal(s) for barrier induction remain uncertain. We assessed the effects of monocarboxylic acids produced in waterlogged soils (acetic, propionic, N-butyric and caproic acids) on barrier formation in adventitious roots of the waterlogging tolerant Hordeum marinum Huds. These acids were applied in nutrient solution either individually (at 0.4 mM) or as a mixture (‘cocktail’) at various total concentrations (0.1, 0.4 and 2 mM) at pH 6. The barrier to ROL was formed in basal zones of roots exposed to the cocktail at 0.4 mM, but not at 0.1 mM. Individually, only N-butyric and caproic acids invoked a ‘tight’ barrier in subapical positions of the roots. These organic acids accelerated deposition of suberin in the hypodermis/exodermis, but did not affect overall root porosity (% gas space). The organic acids also reduced root extension rate and tissue K+; effects were more pronounced at higher concentrations of the cocktail and as the molecular weight of the organic acid increased. Moreover, the cocktail at 2 mM and caproic acid at 0.4 mM alone induced development of intercellular occlusions, suggesting phytotoxin injury. In summary, even relatively low concentrations of organic acids can promote barrier formation in roots, and the potential toxicity of these compounds was demonstrated by declines in root growth and tissue K+ in the wetland species H. marinum.

scholarly journals Rice: Sulfide-induced Barriers to Root Radial Oxygen Loss, Fe2+ and Water Uptake, and Lateral Root Emergence

2005 ◽  
Vol 96 (4) ◽  
pp. 625-638 ◽  
Author(s):  
JEAN ARMSTRONG ◽  
WILLIAM ARMSTRONG
Keyword(s):  
Water Uptake ◽  
Lateral Root ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

Radial oxygen loss, a plastic property of dune slack plant species

2005 ◽  
Vol 271 (1-2) ◽  
pp. 351-364 ◽  
Author(s):  
Peter M. van. Bodegom ◽  
Marleen de Kanter ◽  
Chris Bakker Rien Aerts
Keyword(s):  
Plant Species ◽  
Plastic Property ◽  
Dune Slack ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

scholarly journals The effect of silicon on iron plaque formation and arsenic accumulation in rice genotypes with different radial oxygen loss (ROL)

2016 ◽  
Vol 212 ◽  
pp. 27-33 ◽  
Author(s):  
Chuan Wu ◽  
Qi Zou ◽  
Sheng-Guo Xue ◽  
Wei-Song Pan ◽  
Liu Huang ◽  
...  
Keyword(s):  
Plaque Formation ◽  
Iron Plaque ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Arsenic Accumulation ◽  
Rice Genotypes

Cadmium accumulation in and tolerance of rice (Oryza sativa L.) varieties with different rates of radial oxygen loss

2011 ◽  
Vol 159 (6) ◽  
pp. 1730-1736 ◽  
Author(s):  
M.Y. Wang ◽  
A.K. Chen ◽  
M.H. Wong ◽  
R.L. Qiu ◽  
H. Cheng ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Cadmium Accumulation ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

Radial Oxygen Loss in Wetland Plants: Potential Impacts on Remediation of Contaminated Sediments

2013 ◽  
Vol 139 (4) ◽  
pp. 496-501 ◽  
Author(s):  
Katy Euliss Smith ◽  
Tamara Olivia Luna
Keyword(s):  
Contaminated Sediments ◽  
Wetland Plants ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

The ability of aquatic macrophytes to increase root porosity and radial oxygen loss determines their resistance to sediment anoxia

2012 ◽  
Vol 46 (2) ◽  
pp. 191-200 ◽  
Author(s):  
Damien G. Lemoine ◽  
Florian Mermillod-Blondin ◽  
Marie-Hélène Barrat-Segretain ◽  
Corinne Massé ◽  
Emmanuel Malet
Keyword(s):  
Aquatic Macrophytes ◽  
Radial Oxygen Loss ◽  
Root Porosity ◽  
Oxygen Loss ◽  
Sediment Anoxia

scholarly journals Effect of plant harvesting on the performance of constructed wetlands during winter: radial oxygen loss and microbial characteristics

2014 ◽  
Vol 22 (10) ◽  
pp. 7476-7484 ◽  
Author(s):  
Qian Wang ◽  
Huijun Xie ◽  
Jian Zhang ◽  
Shuang Liang ◽  
Huu Hao Ngo ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Microbial Characteristics ◽  
Plant Harvesting
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