In situ hybridization experiments revealed overlapping but distinctive and complex expression patterns, wider than expected for such a transporter type, including vascular tissues and root periphery but also new locations, such as osmocontractile leaf bulliform cells involved in leaf folding. Functional analyses in Xenopus laevis oocytes revealed striking diversity.

The whole set of data indicates that HKT transporters fulfill distinctive roles at the whole plant level in rice, each system playing diverse roles in different cell types. Several members of the HKT family have already been shown, by genetic approaches, to play important roles in plant salt tolerance Berthomieu et al.

In line with previous reports using rice as a model species to decipher the roles that HKT transporters can play in the plant, we have analyzed the expression patterns of three rice HKT genes, OsHKT2;1OsHKT1;1and OsHKT1;3and investigated the functional properties of these transporters after heterologous expression, revealing new patterns of expression for HKT transporters and striking functional diversity.

Cross sections of roots Fig. Positive controls using an 18S ribonucleic RNA antisense probe indicated that strong hybridization signals could be observed in all root and leaf tissues in our experiments Figs. A, C, E, and G, Antisense probes.

B, D, F, and H, Sense probes. In roots, labeling of OsHKT2;1 expression with the antisense probe was strongest in peripheral layers epidermis, exodermis, and cortex differentiated into an aerenchyma. It was also detected in the stele, mainly in phloem sieve elements and companion cells; Fig. In mature leaves, transcripts of the three HKT genes were identified in bulliform cells, large highly vacuolated cells of the adaxial epidermis involved in leaf rolling Fig.

Staining of OsHKT1;3 transcripts was particularly strong in these cells. Expression of the three HKT genes was also detected in vascular tissues, phloem, and xylem parenchyma cells and differentiating vessels; Fig. As in the roots, the expression patterns of the three HKT genes in the leaves were not modified by the different growth conditions data not shown.

Staining, on the other hand, was dependent on the developmental stage: young immature leaves still folded in the sheath displayed a broader expression pattern of the three HKT genes. In particular, high labeling of mesophyll was observed in sheath for the three HKT genes data not shown.

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For each HKT transporter, the level of inward currents recorded in oocytes after 1 to 2 d of expression was at least 25 times larger than that recorded in control oocytes. Thus, each of the three transporters was by far the main transport system active at the oocyte membrane. Rice HKT transporters differ in their rectification properties. A to D, Examples of currents recorded in Xenopus oocytes. E to H, Mean current-voltage I-V curves.

A and E, Control water-injected oocytes. The dashed lines in A to D mark the zero current level. Surprisingly, the three rice HKT transporters exhibited marked differences in rectification properties.

The third transporter, OsHKT1;1, strongly differed from the two others, since it was strongly inwardly rectifying, mediating no outward current Fig. A strong inward rectification such as that observed in OsHKT1;1 had not, to our knowledge, been previously reported in the plant HKT family. Fitting conductance data in OsHKT2;1 with the sum of two hyperboles resulted in high-affinity and low-affinity half-saturation constants 9.

The cation selectivity of the three rice HKT transporters was examined by comparing the currents mediated in the presence of different monovalent cations Fig. The external cation concentration was either 10 m m Fig. Rice HKT transporters display different cation selectivities. A, Current-voltage I-V curves. B, Conductances extracted from I-V data shown in A. Inward and outward conductances were determined close to reversal potentials three-point and two-point determinations, respectively.

Black symbols represent OsHKT2;1.Revitalize your feeding program. Nourish your valuable crops and prepare your plants for abundant flower formulation. Emerald Harvest Micro contains a powerful blend of micronutrients, while maintaining just the right levels of nitrogen and potassium. Give your crops what they need when they need it most, with Emerald harvest Micro.

The nutrient formula supplies plants with precise nutrient formulations that deliver the right amounts of Nitrogen, Phosphorous, and Potassium throughout the crop life cycles. In addition to regulating the amounts of N, P, and K so that your high-yield plants flourish Micro provides a delicious mix of trace elements as well as many chelated micronutrients. Calcium is an integral part of plant cell wall and gives strength to binding and linking molecules together.

Calcium participates in metabolic activities within the cells and mediates intracellular communications. In the absence of a balanced source of Calcium, metabolism in plants cell either slows down or stops altogether.

Calcium Nitrate is the ideal inorganic N fertilizer source and used when Calcium and Nitrogen are required to be supplied at the same time. A common Nitrogen source as it contains both Nitrogen and Ammonium.

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It is less concentrated than urea but is more stable without loss of Nitrogen in the atmosphere. An exclusive source of Potassium and Nitrogen for optimal plant nutrition.

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The salt is absorbed efficiently and is free of chloride. The optimum level of potassium improves quality and overall yield, and Nitrates enhances formation of organic acid. It is a Nitrogen release fertilizer and has a highest Nitrogen content of most of the nitrogenous fertilizer available in the market.

Cobalt is an essential component of quite a few enzymes and co-enzymes.

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It forms complexes on interaction with other elements. Micronutrients are essential in all stages of plant development.

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However, they are not absorbed directly and are transported in a chelated form. EDTA is a chelating agent, and Chelation is a process wherein the nutrient moiety is bound to an organic molecule like amino acid or proteins so that it is quickly absorbed by plants and last longer in the medium.

EDTA enhances budding and flowering and draws excess mineral nutrient out of solution.

chedly abdelly 2009

It also boosts phytoextraction of heavy metals. Helps retain phosphorus and Mg in the plant- The effects of temporary calcium deficiency on the growth and mineral nutrition of whole tomato Lycopersicon esculentum All. Rondello plants were investigated at the 22—23 leaf stage. At the end of the calcium deficiency period, the plants were supplied again with a standard nutrient solution.

The effect was rapidly attenuated, and no visual symptom was observed after that. Thus, beyond five days, even though the plant was supplied again with calcium, the appearance of visual symptoms shortly preceded the total necrosis of the apical meristem of the stem. Two major phenomena were characterized by the analysis of plant uptake and contents.These metrics are regularly updated to reflect usage leading up to the last few days.

Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric. Find more information on the Altmetric Attention Score and how the score is calculated. Chrysophyllum cainito L.

Sapotaceaeknown commonly as star apple or caimito, is a tropical tree that bears edible fruits. The fruits are grown commercially in certain tropical and subtropical areas, such as southern Florida. In this study, the fresh fruits were extracted with methanol and partitioned with hexane and ethyl acetate sequentially.

Activity-guided fractionation of the ethyl acetate soluble fraction was performed to identify the antioxidant constituents. Of these nine antioxidants, 2 is present in the highest concentration in star apple fruits 7. Food Chem. View Author Information. Cite this: J. Article Views Altmetric. Citations Abstract Chrysophyllum cainito L. Cited By. This article is cited by 88 publications. The Journal of Organic Chemistry74 20 DOI: Analytical Chemistry81 10 The Journal of Organic Chemistry73 14 Kurt A.

Reynertson, Alison M. Wallace, Seiji Adachi, Roberto R. Gil, Hui Yang, Margaret J.Skip to search form Skip to main content You are currently offline.

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Some features of the site may not work correctly. DOI: The halophytes are plants that can survive and reproduce under high salinity. They show high potentiality as new crops plant for biosaline agriculture. Crithmum maritimum L. Apiaceae is one of the promising halophytes. In this paper, the endosperm structure of the fruit of this oilseeds halophyte was investigated using scanning electrons microscopy SEMlight microscopy LM and fluorescence microscopy FM.

View PDF. Save to Library. Create Alert. Launch Research Feed. Share This Paper. Figures from this paper. References Publications referenced by this paper. Localization and composition of seed oils of Crithmum maritimum L. Neutral red as a probe for confocal laser scanning microscopy studies of plant roots. Joseph G. Inside cereals--a fluorescence microchemical view R.

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Derek BewleyDr. Antioxidant activity and phenol content of Crithmum maritimum L. Related Papers. By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License.Despite seeds and fruits of several halophytes being rich in essential oils and other bioactive substances, the histochemical characterization of these compounds has not received much attention.

The aims of the present investigation were to localize the essential oils and the bioactive substances in the seed coat of the oilseed halophyte Crithmum maritimum L.

The second layer represents the endocarp. As revealed by fluorescence and light microscopy, the essential oils, O -dihydroxyphenols and flavonoids, known as bioactive compounds, were accumulated in the canals. The endocarp layer accumulated polysaccharides, O -dihydroxyphenols, and flavonoids. As a whole, these findings highlight the histochemical features and confirm the valuable quality of C. This is a preview of subscription content, log in to check access.

Rent this article via DeepDyve. Bandyopadhyay S, Hamill JD Ultrastructural studies of somatic embryos of Eucalyptus nitens and comparisons with zygotic embryos found in mature seeds. Ann Bot — Hypericaceae : morphological, anatomical and histochemical studies during the courses of ontogenesis.

J Ecol — Egerton-Warburton L A smoke-induced alteration of the sub-testa cuticle in seeds of the post-fire recruiter, Emmenanthe penduliflora Benth. J Exp Bot — New Phytol — Gersbach PV, Reddy N Non-invasive localization of thymol accumulation in Carum capticum Apiaceae fruits by chemical shift selective magnetic resonance imaging.

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Ann Bot Food Chem. Apiaceae against Gram-positive bacteria. Bull Soc Bot Fra — Kirk PW Jr Neutral red as a lipid fluorochrome. Stain Technol —4. Plant Physiol Biochem — Comptes Rendus Biol — J Ethnopharmacol — J Med Food — Pharma Biol — Protoplasma Zobel AM, March RE Autoflourescence reveals different histological localizations of furanocoumarins in fruits of some Umbellifereae and Leguminosae.

Download references. Correspondence to Abdallah Atia. Reprints and Permissions. Atia, A. Plant Biol. Download citation. Received : 20 April Accepted : 02 July Published : 24 July These metrics are regularly updated to reflect usage leading up to the last few days. Citations are the number of other articles citing this article, calculated by Crossref and updated daily.

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Find more information about Crossref citation counts. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.

Find more information on the Altmetric Attention Score and how the score is calculated. Two separate studies were performed to investigate the possibility that mesquite Prosopis spp. The first study was performed by growing mesquite on solid media agar at Cr VI concentrations of 75 and ppm. The accumulation found in the leaves under the present conditions indicated that mesquite could be classified as a hyperaccumulator of chromium.

The second study was conducted to investigate the differences between the type of Cr ligand involved in Cr uptake with agar and hydroponic cultures. We used X-ray absorption spectroscopy XAS to determine the mechanisms involved in the uptake and binding of Cr VI in live mesquite tissue.

The XAS results for this study showed that some of the supplied Cr VI was uptaken by the mesquite roots; however, the data analyses of the plant tissues demonstrated that it was fully reduced to Cr III in the leaf tissues. Experiments are currently being performed to evaluate the behavior of the Mesquite plant using lower Cr concentrations.

View Author Information. Cite this: Environ. Article Views Altmetric. Citations Cited By. This article is cited by publications. DOI: Carmen Lobo, and David H. McNear, Jr. Journal of Proteome Research12 11 Ashaki A. Jack A. Arias, Jose R.

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Peralta-Videa, Joanne T.Iron is an essential nutrient for plants, especially in symbiotic N 2 -fixing legumes. Although abundant in the soil, iron is generally not available to plants as it is predominantly in an insoluble form Fe III. However, studies on the physiological responses of root nodules are lacking.

The present study was initiated to investigate the acidification capacity and Fe-CR activity of nodulated roots, and intact nodules, in two contrasting common bean varieties, Coco blanc sensitive to iron deficiency and Flamingo tolerant to iron deficiency. This is a preview of subscription content, log in to check access.

Rent this article via DeepDyve. Andaluz, S. Increases in phosphoenolpyruvate carboxylase activity in iron-deficient beet roots: analysis of spatial localization and post-translational modification.

Plant and Soil : 43— Arnon, D.

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Copper enzymes in isolated chloroplast. Polyphenoloxidase in Beta vulgaris. Plant Physiology 24 : 1— Bavaresco, L. Investigations on iron uptake and reduction by excised roots of different grapevine rootstocks and a Vitis vinifera cultivar.

Plant and Soil : — Bisht, S. Biochemical changes under iron deficiency and recovery in tomato. Indian Journal of Plant Physiology 7 : — Brancadoro, L. Mechanisms of Fe-efficiency in roots of Vitis spp. Brent, N. Plant Journal 35 : — Briat, J.

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