Effect of iron plaque on the root surface of hydrophyte on nitrogen and phosphorus transformation

2020 ◽  
Vol 12 ◽  
pp. 100566
Author(s):  
Xiaodong Wan ◽  
Yi Li ◽  
Chaoyu Li ◽  
Huijun Xie ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Root Surface ◽  
Iron Plaque ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Transformation

Zinc, lead and cadmium accumulation and tolerance in Typha latifolia as affected by iron plaque on the root surface

1998 ◽  
Vol 61 (1) ◽  
pp. 55-67 ◽  
Author(s):  
Zhihong Ye ◽  
Alan J.M Baker ◽  
Ming-Hung Wong ◽  
Arthur J Willis
Keyword(s):  
Typha Latifolia ◽  
Cadmium Accumulation ◽  
Root Surface ◽  
Iron Plaque ◽  
Lead And Cadmium

Effect of Root Surface Iron Plaque on Se Translocation and Uptake by Fe-Deficient Rice

Pedosphere ◽  
2007 ◽  
Vol 17 (5) ◽  
pp. 580-587 ◽  
Author(s):  
Xin-Bin ZHOU ◽  
Wei-Ming SHI
Keyword(s):  
Root Surface ◽  
Iron Plaque ◽  
Surface Iron

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.

Progress in research of iron plaque on root surface of wetland plants

2014 ◽  
Vol 34 (10) ◽  
Author(s):  
刘春英 LIU Chunying ◽  
陈春丽 CHEN Chunli ◽  
弓晓峰 GONG Xiaofeng ◽  
周文斌 ZHOU Wenbin ◽  
杨菊云 YANG Juyun
Keyword(s):  
Root Surface ◽  
Wetland Plants ◽  
Iron Plaque

scholarly journals Influence of external zinc and phosphorus supply on Cd uptake by rice (Oryza sativa L.) seedlings with root surface iron plaque

2007 ◽  
Vol 300 (1-2) ◽  
pp. 105-115 ◽  
Author(s):  
H. J. Liu ◽  
J. L. Zhang ◽  
P. Christie ◽  
F. S. Zhang
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Root Surface ◽  
Iron Plaque ◽  
Cd Uptake ◽  
Surface Iron

Iron Plaque Prevents Partitioning of Polycyclic Aromatic Hydrocarbons on Rice ( Oryza sativa ) Root Surface

2020 ◽  
Vol 16 (3) ◽  
pp. 392-399
Author(s):  
Xiaofei Lv ◽  
Zhiyuan Nie ◽  
Dongchen Zhang ◽  
Lifang Hu ◽  
Yuping Wu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Root Surface ◽  
Iron Plaque ◽  
Polycyclic Aromatic
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