Effect of Toxic Iron Concentrations on the Growth of Lowlands Rice

Olaleye, A. O.; Tabi, Fritz Oben; Ogunkunle, A. O.; Singh, B. N.; Sahrawat, K. L.

doi:10.1081/pln-100104971

Cited by 51 publications

(35 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many reports relating Fe-toxicity with deficiencies for other nutrient elements such as P and K 4,12,13,17,26,35 . However, Sahrawat 27 showed the presence of Fe toxicity without any apparent deficiency of other nutrients.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of Iron Tolerant Rice Lines Developed at IRRI under Field Conditions

Nozoe

Agbisit

Fukuta

et al. 2008

JARQ

View full text Add to dashboard Cite

In the 2003 wet season, IR64 (check variety) and four lines of rice (Oryza sativa L.) developed at IRRI were cultivated in a field with iron (Fe) toxicity at Iloilo City, Philippines, and also under normal soil conditions at IRRI farm. Two of the lines used in the experiments were the near isogenic lines (NILs) of IR64, selected as Fe-tolerant lines in solution culture in the greenhouse. The other two lines were elite breeding lines that were selected as Fe-tolerant lines in the field trial at Iloilo. The tolerances of NILs were not expressed at the Iloilo field site because the yield reductions due to Fe-toxicity were similar to or larger than those for IR64. The yield reduction of elite breeding lines was smaller than that of IR64, indicating that the tolerance of elite breeding lines was expressed at the Iloilo field. At Iloilo, the shoot dry weights of IR64 and its NILs hardly increased after 73 days of cultivation. On the contrary, those of elite breeding lines kept on increasing. While the root dry weight of IR64 and its NILs decreased abruptly after 50 days of growth, those of elite breeding lines remained constant or decreased gradually. This finding suggests that one of the factors that suppressed the growth of IR64 and its NILs during the late stage was early root senescence. Since the tolerance of elite breeding lines was associated with the maintenance of root activity during the late stage of growth, the long maturity period of elite breeding lines presumably helped to alleviate the toxicity.Discipline: Soil, fertilizers and plant nutrition Additional key words: Fe-tolerance, Fe-toxicity, paddy soil, root JARQ 42 (3), 187 -192 (2008) http://www.jircas.affrc.go.jp This study was supported by the IRRI-Japan collaborative research project phase IV (1999IV ( -2004.

show abstract

Section: Resultsmentioning

confidence: 99%

Characteristics of Iron Tolerant Rice Lines Developed at IRRI under Field Conditions

Nozoe

Agbisit

Fukuta

et al. 2008

JARQ

View full text Add to dashboard Cite

show abstract

“…It is a multiple nutritional stress which occurs when Fe 2+ is abundantly taken up by the plant and becomes concentrated in the leaves. Iron toxicity causes limb discoloration, reduced tillering, stunted growth and reduced yields (Cherif et al, 2009;Olaleye et al, 2001;Audebert, 2006). Lowland rice cultivation in West African savannahs and forest lowlands is often hampered by iron toxicity.…”

Section: Resultsmentioning

confidence: 99%

Soil fertility capability classification (FCC) for rice production in Cameroon lowlands

Tabi¹,

Ngobesing²,

Yinda³

et al. 2013

Afr. J. Agric. Res.

View full text Add to dashboard Cite

Fertility capability classification (FCC) system is a technical soil classification system focusing quantitatively on physical and chemical properties of soil important to soil fertility management. Lowland rice cultivation is a major activity in Cameroon, where demand for the commodity is increasing amidst increasing production constraints. This study was intended to classify lowland rice soils in major rice-growing areas into fertility capability classes, identify soil fertility limitations to increased lowland rice cultivation, and identify research areas needed to boost and sustain rice yields. Secondary data of selected soils characterized for morphological, physical and chemical properties was used. Soil fertility limitations characterizing lowland rice producing areas in Cameroon were: Fe-and Al-toxicities (a), low nutrient capital reserves (k), high leaching potential (e), and micronutrient deficiencies (Fe and Zn). The lowland soils were classified as: Lagk, Cagk, Laegk, Cbgm, Caeg, Lbg, Lgk, Cgv, LCg and Cgv, which reflect these limitations. A high potential exists to increase national rice production in Cameroon through research aimed at reducing the effects of Al and Fe toxicity, increasing nutrient capital reserves based on appropriate cultural and chemical techniques.

show abstract

“…Though iron and copper are essential trace elements for plants, being involved in many processes of metabolisms (Brown, 1978;Geider and Laroche, 1994;Marschner and Romheld, 1994), excess concentration can result in toxicity, especially in altering chromatin structure, synthesis of chlorophyll and protein, enzyme activity, photosynthesis and respiration, water content and plant biomass yield (Guerinot and Yi, 1994;Mori, 1999;Olaleye et al, 2001;Connolly and Guerinot, 2002;Burzynski and Klobus, 2004).…”

Section: Introductionmentioning

confidence: 99%

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Xing

Huang

Liu

2009

Environmental Toxicology

View full text Add to dashboard Cite

To elucidate effect of chemical reagents addition on growth of aquatic plants in restoration of aquatic ecosystem, Spirodela polyrrhiza (L.) Schleid was used to evaluate its physiological responses to excess iron (Fe 31 ) and copper (Cu 21 ) in the study. Results showed that accumulation of iron and copper both reached maximum at 100 mg L 21 iron or copper after 24 h short-term stress, but excess iron and copper caused plants necrosis or death and colonies disintegration as well as roots abscission at excess metal concentrations except for 1 mg L 21 iron. Significant differences in chlorophyll fluorescence (Fv/Fm) were observed at 1-100 mg L 21 iron or copper. The synthesis of chlorophyll and protein as well as carbohydrate and the uptake of phosphate and nitrogen were inhibited seriously by excess iron and copper. Proline content decreased with increasing iron or copper concentration, however, MDA content increased with increasing iron or copper concentration. # 2009 Wiley Periodicals, Inc. Environ Toxicol 25: 103-112, 2010.

show abstract

Effect of Toxic Iron Concentrations on the Growth of Lowlands Rice

Cited by 51 publications

References 13 publications

Characteristics of Iron Tolerant Rice Lines Developed at IRRI under Field Conditions

Characteristics of Iron Tolerant Rice Lines Developed at IRRI under Field Conditions

Soil fertility capability classification (FCC) for rice production in Cameroon lowlands

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Contact Info

Product

Resources

About