Herbicide chlorsulfuron decreases growth of fine roots and micronutrient uptake in wheat genotypes

Rengel, Zdenko; Wheal, Matthew S.

doi:10.1093/jxb/48.4.927

Cited by 29 publications

(12 citation statements)

References 30 publications

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“…The most important Zn-efficiency mechanisms include: 1) a greater proportion and a longer length of fine roots with diameters Յ0.2 mm (Dong et al, 1995;Rengel and Wheal, 1997a), The most important Zn-efficiency mechanisms include: 1) a greater proportion and a longer length of fine roots with diameters Յ0.2 mm (Dong et al, 1995;Rengel and Wheal, 1997a),…”

Section: Mechanisms Of Zinc Efficiencymentioning

confidence: 99%

“…Different root development may play an important role in differential Zn efficiency among various genotypes (Dong et al, 1995;Rengel and Wheal, 1997a;Khan et al, 1998). Zn-efficient wheat genotypes developed longer and thinner roots (a greater proportion of fine roots with diameter Յ0.2 mm) than Zninefficient ones when grown in soils low in available Zn (Dong et al, 1995), thus resulting in exploration of a larger volume of soil.…”

Section: ) Root Growthmentioning

confidence: 99%

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Genotypic Differences in Micronutrient Use Efficiency in Crops

Rengel

2001

Communications in Soil Science and Plant Analysis

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155

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When grown on soils with low micronutrient availability due to either chemical or biological fixation, or spatial or temporal unavailability, micronutrient-efficient genotypes have a greater yield in comparison to inefficient ones, even when fertilized with smaller amounts of fertilizers or less frequently. This review summarizes published information on genotypic differences in Zn, Fe and Mn efficiency. Generally, micronutrient-efficient genotypes are capable of increasing available soil micronutrient pools through changing chemical and microbiological properties of the rhizosphere as well as by growing thinner and longer roots and having more efficient uptake and transport systems. For Zn-efficient genotypes, more efficient utilization of Zn in tissue also contributes to overall Zn efficiency. Understanding micronutrient efficiency mechanisms is important for designing suitable screening techniques for breeding micronutrient-efficient genotypes. Growing micronutrient-efficient genotypes contributes to environmentally-benign agriculture by lowering the input of chemicals and energy. These genotypes also 1163 ORDER REPRINTS offer a potential for producing grain for human consumption with higher concentration of Fe, Zn and Cu, the three micronutrients that about a third of the world population is deficient in. RENGELDownloaded by [Nanyang Technological University] at 02:24

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Section: Mechanisms Of Zinc Efficiencymentioning

confidence: 99%

Section: ) Root Growthmentioning

confidence: 99%

Genotypic Differences in Micronutrient Use Efficiency in Crops

Rengel

2001

Communications in Soil Science and Plant Analysis

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155

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“…Therefore, herbicides may decrease the availability of nutrients. In addition, Rengel and Wheal ( 1997 ) demonstrated that chlorsulfuron decreases the uptake of micronutrients (Zn, Cu, and Mn) in wheat genotypes. Similarly, Azmat et al ( 2006 ) showed that atrazine decreases the levels of Na and K in Vigna radita .…”

Section: Herbicide Stressmentioning

confidence: 99%

Uptake of Mineral Elements During Abiotic Stress

Duman

2011

Abiotic Stress Responses in Plants

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Several environmental factors infl uence the mineral uptake of plants, including pH, redox potential, and the presence of xenobiotics as well as the temperature and salinity. Changes in environmental conditions affect the biological and physiological response of plants. Most important targets of plants are maintained by the ion homeostasis and mineral uptake in stress conditions. Plants may use the different procedures to regulate homeostasis. In general, Na salt stress decreases the levels of cationic nutrients such as K, Ca, and Mg due to competition for ion transport sites. Drought and salinity stress are physiologically related and the tolerance mechanisms overlap. Metals can interfere with mineral nutrition and change the concentration and composition of plant nutrients. Besides, metals may also alter the conformation of proteins, including transporters, or regulator proteins. Herbicides may disrupt the function and integrity of the cell membrane, and signifi cant ion losses can occur. However, molecular mechanisms and genetic basis of interactions between abiotic stress and mineral uptake is lacking. Thus, future studies will focus on these aspects. In this chapter, the effects of some common stressors, such as salinity, drought, metals, herbicides, and on nutrient uptake are elucidated.

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“…Herbicides modified the ability of roots to explore soil rather than decreasing absorption at the root surface (Osborne et al, 1993). Another study on the effect with wheat showed that chlorsulfuron reduced the uptake of Cu, Mn and Zn (Rengel & Wheal, 1997).…”

Section: Effects Of Agrochemicalsmentioning

confidence: 99%

Rhizospheric organic compounds in the soil–microorganism–plant system: their role in iron availability

Mimmo

Buono

Terzano

et al. 2014

European J Soil Science

222

143

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Poor iron (Fe) availability in soil represents one of the most important limiting factors of agricultural production and is closely linked to physical, chemical and biological processes within the rhizosphere as a result of soil–microorganism–plant interactions. Iron shortage induces several mechanisms in soil organisms, resulting in an enhanced release of inorganic (such as protons) and organic (organic acids, carbohydrates, amino acids, phytosiderophores, siderophores, phenolics and enzymes) compounds to increase the solubility of poorly available Fe pools. However, rhizospheric organic compounds (ROCs) have short half-lives because of the large microbial activity at the soil–root interface, which might limit their effects on Fe mobility and acquisition. In addition, ROCs also have a selective effect on the microbial community present in the rhizosphere. This review aims therefore to unravel these complex dynamics with the objective of providing an overview of the rhizosphere processes involved in Fe acquisition by soil organisms (plants and microorganisms). In particular, the review provides information on (i) Fe availability in soils, including mineral weathering and Fe mobilization from soil minerals, ligand and element competition and plant-microbe competition; (ii) microbe–plant interactions, focusing on beneficial microbial communities and their association with plants, which in turn influences plant mineral nutrition; (iii) plant–soil interactions involving the metabolic changes triggered by Fe deficiency and the processes involved in exudate release from roots; and (iv) the influence of agrochemicals commonly used in agricultural production systems on rhizosphere processes related to Fe availability and acquisition by crops

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Herbicide chlorsulfuron decreases growth of fine roots and micronutrient uptake in wheat genotypes

Cited by 29 publications

References 30 publications

Genotypic Differences in Micronutrient Use Efficiency in Crops

Genotypic Differences in Micronutrient Use Efficiency in Crops

Uptake of Mineral Elements During Abiotic Stress

Rhizospheric organic compounds in the soil–microorganism–plant system: their role in iron availability

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