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Water Sci Technol 79 6 : — Article history Received:. Views Icon Views.

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You do not currently have access to this content. Sign in. Client Account. You could not be signed in. Sign In Reset password. Buy This Article. View Metrics. Cited by Google Scholar. Application of farmyard manure FYM helped improve dry matter yield irrespective of the dose of Cd by reducing the Cd supply from the soil leading to decreased Cd concentration and increased Zn concentration in plants.

As such the results of the investigation have shown that organic manure can play a vital role in counteracting the harmful effects of excess Cd in soil.

The concentration of zinc Zn in wheat grain is frequently correlated with the concentration of sulphur S. Many of the molecules that bind Zn or are involved in the acquisition and transport of Zn contain S or have the S-amino acid methionine as a precursor.

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However, the role of S nutrition on the deposition of Zn in wheat grain has not been examined. An experiment was conducted in which bread and durum wheat were grown at 2 levels of Zn 2. Biomass production and yield were not affected by the Zn and S treatments.

Adding S increased the concentrations of Zn in the shoots and Zn in the grain and the concentrations of grain Zn and grain S were significantly correlated. The S:Zn ratio in the grain did not vary with S 50, 47 and 50 at 15, 35 and 55 mg S kg-1, respectively , suggesting additional S increased Zn uptake and deposition in a proportional manner.

Grain Zn concentrations were significantly correlated with the concentration of Zn in the vegetative tissue a month after sowing, which emphasises the importance of uptake as a foundation of high grain Zn. The experiment demonstrated for the first time that S can enhance the uptake of Zn under conditions when Zn is adequate for growth. Graminaceous plants including rice Oryza sativa L. Vesicles derived from the rough endoplasmic reticulum rER observed in Fe-deficient barley roots were suggested to be involved in MA biosynthesis.

However, the relationship between these vesicles and MA biosynthesis has not been well characterized.

An Evaluation of the Effectiveness of Sorbents in the Remediation of Soil Contaminated with Zinc

The genes that participate in this pathway have been identified. Confocal laser scanning microscopy of root pericycle cells indicated that the structure with OsNAS2:sGFP dot-like labeling moved dynamically within the cell. The apoplast is known to play a predominant role in the expression of manganese Mn toxicity in cowpea Vigna unguiculata [L. The initial rapid symplastic molecular changes leading to Mn tolerance or triggering proteomic and metabolomic apoplastic processes leading to Mn toxicity in cowpea are currently poorly understood.


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Therefore, the focus was on the identification of early excess Mn-induced genotypic differences in the leaf-gene expression of the Mn-tolerant cowpea cv. TVu and the Mn-sensitive cowpea cv. TVu Furthermore, the beneficial mineral element silicon Si , known to improve Mn tolerance in plants, was included in the experiments in order to detect modifications in gene expression leading to enhanced Si-mediated Mn tolerance in the Mn-sensitive cowpea genotype. The results showed that short-term elevated Mn supply induced large-scale changes in the transcriptome of both cowpea cultivars.

Furthermore, the coexistence of a Mn-combined but also broad constitutive impact of Si on the transcriptome level could be demonstrated for the Mn-sensitive cowpea gentoype. These results call for a more in-depth analysis of genotypic differences in the excess Mn response on the transcriptome level including a comprehensive selection of further candidate genes.

Therefore, an expanded transcriptomic assay, including the selection of differentially expressed candidate genes and the investigation of their genotype specific expression pattern by quantitative Real-Time PCR qRT-PCR , might reveal further insights into the symplastic processes triggering Mn tolerance through apoplastic processes in cowpea.

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Boron deficiency B is very common in Brazilian crops. Besides the low natural concentration in the soils, its restricted redistribution within the tropical plants can be responsible for this deficiency, especially at fruits and seeds development stages. The objective of this work was to evaluate the absorption and distribution of boron in castor bean Ricinus communis L. Experimental design was completely randomized with three treatments: 1 —Application of 2. The experiments was carried out in green house and the castor bean plants were grown in plastic pots with nutrient solution 10 L.

The Proceedings of the International Plant Nutrition Colloquium XVI

It was concluded that the applications of 1 mg of B in the nutrient solution treatment 1 was more effective in increasing B content in the seed when compared to the foliar spray of 2. The castor bean yield in the treatment 1 was higher to that in the treatment 2. Boron in castor bean is transported quickly from roots to fruits, while the transport from leaves to fruits is not enough to guarantee the normal yield in conditions of low availability of this element.

Productivity of coarse textured sandy soil is relatively low due to its extreme permeability which permits deep percolation of water and nutrients. Onattukara sandy tract is a fluvial and marine sand area of Alappuzha and Kollam districts of Kerala state in India which covers about ha. The cropping system practiced here is Rice-Rice-Sesame. Total organic C contents and natural 13 C abundances were determined in each aggregate size fraction, which allowed calculation of the proportions of aggregate C derived from either C 3 or C 4 recently deposited C.

The proportion of water-stable macroaggregates in the meadow soil and their C 3 -derived C contents decreased with corn cropping. Analysis of water-stable macroaggregates under corn showed that they were enriched in recently deposited C relative to microaggregates and to the whole soil, which partly compensated for their loss in C 3 -C.

The results of this study provide further quantitative evidence that slaking-resistant macroaggregates are enriched in, and probably stabilized by, recently deposited organic matter. Soil Science Society of America. Editorial Board. Skip to main content.