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

scholarly journals Do radial oxygen loss and external aeration affect iron plaque formation and arsenic accumulation and speciation in rice?

2012 ◽  
Vol 63 (8) ◽  
pp. 2961-2970 ◽  
Author(s):  
Chuan Wu ◽  
Zhihong Ye ◽  
Hui Li ◽  
Shengchun Wu ◽  
Dan Deng ◽  
...  
Keyword(s):  
Plaque Formation ◽  
Iron Plaque ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Arsenic Accumulation

Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?

2013 ◽  
Vol 375 (1-2) ◽  
pp. 137-148 ◽  
Author(s):  
Hao Cheng ◽  
Maoyi Wang ◽  
Ming Hung Wong ◽  
Zhihong Ye
Keyword(s):  
Rice Plant ◽  
Plaque Formation ◽  
Iron Plaque ◽  
Plant Tissues ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

scholarly journals Effect of arsenic on spatial pattern of radial oxygen loss and iron plaque formation in rice

2017 ◽  
Vol 27 (2) ◽  
pp. 413-419 ◽  
Author(s):  
Chuan WU ◽  
Liu HUANG ◽  
Sheng-guo XUE ◽  
Wei-song PAN ◽  
Qi ZOU ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Plaque Formation ◽  
Iron Plaque ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

scholarly journals How Red Mud-Induced Enhancement of Iron Plaque Formation Reduces Cadmium Accumulation in Rice with Different Radial Oxygen Loss

2016 ◽  
Vol 25 (4) ◽  
pp. 1603-1613 ◽  
Author(s):  
Zhiyan Liu ◽  
Junxing Yang ◽  
Xiaoming Wan ◽  
Yisheng Peng ◽  
Jie Liu ◽  
...  
Keyword(s):  
Red Mud ◽  
Cadmium Accumulation ◽  
Plaque Formation ◽  
Iron Plaque ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

scholarly journals Iron oxidation on the surface of adventitious roots and its relation to aerenchyma formation in rice genotypes

2014 ◽  
Vol 38 (1) ◽  
pp. 185-192 ◽  
Author(s):  
Marquel Jonas Holzschuh ◽  
Filipe Selau Carlos ◽  
Felipe de Campos Carmona ◽  
Humberto Bohnen ◽  
Ibanor Anghinoni
Keyword(s):  
Chemical Reduction ◽  
Rice Genome ◽  
Reduction Process ◽  
Root Surface ◽  
Plaque Formation ◽  
Iron Plaque ◽  
Rice Cultivars ◽  
Aerenchyma Formation ◽  
Free Oxygen ◽  
Rice Genotypes

Establishment of the water layer in an irrigated rice crop leads to consumption of free oxygen in the soil which enters in a chemical reduction process mediated by anaerobic microorganisms, changing the crop environment. To maintain optimal growth in an environment without O2, rice plants develop pore spaces (aerenchyma) that allow O2 transport from air to the roots. Carrying capacity is determined by the rice genome and it may vary among cultivars. Plants that have higher capacity for formation of aerenchyma should theoretically carry more O2 to the roots. However, part of the O2 that reaches the roots is lost due to permeability of the roots and the O2 gradient created between the soil and roots. The O2 that is lost to the outside medium can react with chemically reduced elements present in the soil; one of them is iron, which reacts with oxygen and forms an iron plaque on the outer root surface. Therefore, evaluation of the iron plaque and of the formation of pore spaces on the root can serve as a parameter to differentiate rice cultivars in regard to the volume of O2 transported via aerenchyma. An experiment was thus carried out in a greenhouse with the aim of comparing aerenchyma and iron plaque formation in 13 rice cultivars grown in flooded soils to their formation under growing conditions similar to a normal field, without free oxygen. The results indicated significant differences in the volume of pore spaces in the roots among cultivars and along the root segment in each cultivar, indicating that under flooded conditions the genetic potential of the plant is crucial in induction of cell death and formation of aerenchyma in response to lack of O2. In addition, the amount of Fe accumulated on the root surface was different among genotypes and along the roots. Thus, we concluded that the rice genotypes exhibit different responses for aerenchyma formation, oxygen release by the roots and iron plaque formation, and that there is a direct relationship between porosity and the amount of iron oxidized on the root surface.

Combined effect of rice genotypes and soil characteristics on iron plaque formation related to Pb uptake by rice in paddy soils

2015 ◽  
Vol 16 (1) ◽  
pp. 150-158 ◽  
Author(s):  
Fang-Lin Li ◽  
Ching-Ming Yang ◽  
Chien-Hui Syu ◽  
Dar-Yuan Lee ◽  
Ben-Jei Tsuang ◽  
...  
Keyword(s):  
Soil Characteristics ◽  
Plaque Formation ◽  
Combined Effect ◽  
Iron Plaque ◽  
Paddy Soils ◽  
Rice Genotypes
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