The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Jian Feng - One of the best experts on this subject based on the ideXlab platform.
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altered root structure affects both expression and cellular localization of transporters for Mineral Element uptake in rice
Plant and Cell Physiology, 2020Co-Authors: Naoki Yamaji, Jian FengAbstract:One of the most important roles of plant roots is to take up Mineral Elements for their growth. Although several genes involved in root growth have been identified, the association between root structure and Mineral Element uptake is less investigated. In this study, we isolated a rice mutant (dice1, defective in cell elongation 1) with short-root phenotype. This mutant was characterized by partial defect in the formation of root outer cell layers. Mapping of the responsible gene revealed that the short-root phenotype in the mutant was caused by a single-nucleotide substitution of a gene encoding a membrane-anchored endo-1,4-beta-glucanase (OsGlu3). The growth of both the roots and shoots was partially recovered with increasing strength of nutrient solution and glucose in the mutant. The mutant showed a decreased uptake (normalized by root dry weight) for Mg, Mn, Fe, Cu, Zn, Cd, As and Ge but increased uptake for K and Ca. The expression level of some transporter genes including OsLsi1 and OsLsi2 for Si uptake and OsNramp5 for Mn uptake was significantly decreased in the mutant compared with the wild-type (WT) rice. Furthermore, the cellular localization of OsLsi1 was altered; OsLsi1 localized at the root exodermis of the WT rice was changed to be localized to other cell layers of the mutant roots. However, this localization became normal in the presence of exogenous glucose in the mutant. Our results indicate that a normal root structure is required for maintaining the expression and localization of transporters involved in the Mineral Element uptake.
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Transporters involved in Mineral nutrient uptake in rice
Journal of Experimental Botany, 2016Co-Authors: Akimasa Sasaki, Naoki Yamaji, Jian FengAbstract:: One of the most important roles of plant roots is to take up essential Mineral nutrients from the soil for use in plant growth and development. The uptake of Mineral Elements is mediated by various transporters belonging to different transporter families. Here we reviewed transporters for the uptake of macronutrients and micronutrients identified in rice, an important staple food for half of the world's population. Rice roots are characterized by having two Casparian strips on the exodermis and endodermis and by the formation of aerenchyma in the mature root zone. This distinct anatomical structure dictates that a pair of influx and efflux transporters at both the exodermis and endodermis is required for the radial transport of a Mineral Element from the soil solution to the stele. Some transporters showing polar localization at the distal and proximal sides of the exodermis and endodermis have been identified for silicon and manganese, forming an efficient uptake system. However, transporters for the uptake of most Mineral Elements remain to be identified.
Pierre Jacques Meerts - One of the best experts on this subject based on the ideXlab platform.
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increased topsoil Mineral nutrient concentrations under exotic invasive plants in belgium
Plant and Soil, 2005Co-Authors: Sonia Vanderhoeven, Nicolas Dassonville, Pierre Jacques MeertsAbstract:Exotic invasive plants can alter ecosystem processes. For the first time in Europe, we have analysed the impacts of exotic invasive plants on topsoil chemical properties. At eight sites invaded by five exotic invasive species (Fallopia japonica, Heracleum mantegazzianum, Solidago gigantea, Prunus serotina and Rosa rugosa), soil Mineral Element composition was compared between invaded patches and adjacent, uninvaded vegetation. We found increased concentrations of exchangeable essential nutrients under the canopy of exotic invasive plants, most strikingly so for K and Mn (32% and 34% increase, respectively). This result fits in well with previous reports of enhanced N dynamics in invaded sites, partly due to higher net primary productivity in exotic invasive plants compared to native vegetation.
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growth and Mineral Element composition in two ecotypes of thlaspi caerulescens on cd contaminated soil
Plant and Soil, 2005Co-Authors: Caroline Dechamps, Nancy Roosens, Celine Hotte, Pierre Jacques MeertsAbstract:The heavy metal hyperaccumulator Thlaspi caerulescens occurs both on heavy metal polluted soils (metallicolous ecotype MET) and on soils with normal heavy metal content (non-metallicolous ecotype: NMET). In order to assess the extent and structure of variation in growth, shoot accumulation of Cd, Zn and Mineral Element (Ca, Mg, K, Fe), a MET ecotype from Belgium and a NMET ecotype from Luxembourg were studied. Seven maternal families from two populations of each ecotype were grown on both Cd and Zn contaminated soil. Although both ecotypes presented a similar heavy metal tolerance in the experimental conditions tested, they differed in several points. The MET populations had markedly higher biomass and higher root:shoot ratio compared to NMET populations. The Zn, and at lesser extent, the Cd hyperaccumulation capacity tended to be higher in the NMET populations. The same trend was observed for the foliar concentrations of Mg, Ca and Fe with NMET populations having higher concentrations compared to MET ones. Cd and Zn concentrations were negatively correlated with the biomass of both ecotype. However, the negative correlation between the Zn and biomass was much lower in MET ecotype suggesting a tighter control of internal Zn concentration in this ecotype. Finally, although the Cd phytoextraction capacity was similar in both ecotype, a higher Zn phytoextraction capacity was detected in NMET ecotype when these plants grow on moderate Cd and Zn concentrations.
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thlaspi caerulescens on nonmetalliferous soil in luxembourg ecological niche and genetic variation in Mineral Element composition
New Phytologist, 2004Co-Authors: Mireille Molitor, Caroline Dechamps, Wolf Gruber, Pierre Jacques MeertsAbstract:Summary • Forty-seven populations of Thlaspi caerulescens in Luxembourg were characterised for population size, soil Mineral Element composition and other habitat characteristics. Foliar concentrations of eight Elements were assessed in 15 populations in the field and in eight populations cultivated in zinc (Zn)-cadmium (Cd)-nickel (Ni)-enriched soil. • T. caerulescens favoured stony soil developed on steep, south-facing Emsian shale outcrops. All soil samples were nonmetalliferous. Soil pH ranged from 4.2 to 6.9. Field-growing plants had very high concentrations of heavy metals in the leaves (Zn, 3000–13 000 mg kg−1; Cd, 11–44 mg kg−1; Ni, 38–473 mg kg−1). Positive soil–plant correlations existed for Zn and Mn. • In cultivation, significant genetic variation was found for biomass and six of eight Mineral Elements. For Cd and Zn, variation range among 48 half-sib families was two-fold (Cd, 183–334 mg kg−1; Zn, 8030–16 295 mg kg−1). Most of the variation occurred among populations, consistent with the selfing mating system of those populations. There was a tight Zn–Cd genetic correlation (r = +0.83, P < 0.0001). • The significance of the results to the conservation of T. caerulescens in Luxembourg is briefly discussed.
Philip J White - One of the best experts on this subject based on the ideXlab platform.
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Mineral Element composition of cabbage as affected by soil type and phosphorus and zinc fertilisation
Plant and Soil, 2019Co-Authors: Paula Pongrac, J W Mcnicol, Allan Lilly, Jacqueline A Thompson, Gladys Wright, Stephen Hillier, Philip J WhiteAbstract:The effects of phosphorus and zinc applications on phosphorus and zinc concentrations in plants grown in different soil types have rarely been investigated. The aim of this study was to evaluate the effects of different soil types and phosphorus and zinc addition on growth and Mineral Element composition of red cabbage (Brassica oleracea var. capitata L. cv. Red Drumhead). Plants were grown for six weeks in three different soils (a freely drained Cambisol, an imperfectly drained Cambisol, and a Stagnosol) in a glasshouse. Each soil was amended with one of 25 combinations of phosphorus and zinc fertiliser. Soil characteristics, growth, and Mineral Element concentrations in shoots were assessed. Soil type significantly affected shoot growth and concentrations of phosphorus, zinc, potassium, calcium, magnesium and manganese, but not iron concentration of red cabbage. Across soils, the observed responses were attributed to soil phosphorus, potassium, calcium, magnesium, and sulphur concentrations, organic matter content, and Mineral composition, mainly kaolinite and plagioclase. Soil type effects on Mineral Element composition of red cabbage could have important implications for increasing Mineral Element concentration in crops to alleviate Mineral Element deficiencies in human diets.
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Mineral Element composition of cabbage as affected by soil type and phosphorus and zinc fertilisation
Plant and Soil, 2019Co-Authors: Paula Pongrac, J W Mcnicol, Allan Lilly, Jacqueline A Thompson, Gladys Wright, Philip J White, S J HillierAbstract:Background and aims The effects of phosphorus and zinc applications on phosphorus and zinc concentrations in plants grown in different soil types have rarely been investigated. The aim of this study was to evaluate the effects of different soil types and phosphorus and zinc addition on growth and Mineral Element composition of red cabbage (Brassica oleracea var. capitata L. cv. Red Drumhead).
Won Park - One of the best experts on this subject based on the ideXlab platform.
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The role of silicon in plant tissue culture
Frontiers in plant science, 2014Co-Authors: Iyyakkannu Sivanesan, Won ParkAbstract:Growth and morphogenesis of in vitro cultures of plant cells, tissues and organs are greatly influenced by the composition of the culture medium. Mineral nutrients are necessary for the growth and development of plants. Several morpho-physiological disorders such as hooked leaves, hyperhydricity, fasciation and shoot tip necrosis are often associated with the concentration of inorganic nutrient in the tissue culture medium. Silicon (Si) is the most abundant Mineral Element in the soil. The application of Si has been demonstrated to be beneficial for growth, development and yield of various plants and to alleviate various stresses including nutrient imbalance. Addition of Si to the tissue culture medium improves organogenesis, embryogenesis, growth traits, morphological, anatomical and physiological characteristics of leaves, enhances tolerance to low temperature and salinity, protects cells and against metal toxicity, prevents oxidative phenolic browning and reduces the incidence of hyperhydricity in various plants. Therefore, Si possesses considerable potential for application in a wide range of plant tissue culture studies such as cryopreservation, organogenesis, micropropagation, somatic embryogenesis and secondary metabolites production.
Paula Pongrac - One of the best experts on this subject based on the ideXlab platform.
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Mineral Element composition of cabbage as affected by soil type and phosphorus and zinc fertilisation
Plant and Soil, 2019Co-Authors: Paula Pongrac, J W Mcnicol, Allan Lilly, Jacqueline A Thompson, Gladys Wright, Stephen Hillier, Philip J WhiteAbstract:The effects of phosphorus and zinc applications on phosphorus and zinc concentrations in plants grown in different soil types have rarely been investigated. The aim of this study was to evaluate the effects of different soil types and phosphorus and zinc addition on growth and Mineral Element composition of red cabbage (Brassica oleracea var. capitata L. cv. Red Drumhead). Plants were grown for six weeks in three different soils (a freely drained Cambisol, an imperfectly drained Cambisol, and a Stagnosol) in a glasshouse. Each soil was amended with one of 25 combinations of phosphorus and zinc fertiliser. Soil characteristics, growth, and Mineral Element concentrations in shoots were assessed. Soil type significantly affected shoot growth and concentrations of phosphorus, zinc, potassium, calcium, magnesium and manganese, but not iron concentration of red cabbage. Across soils, the observed responses were attributed to soil phosphorus, potassium, calcium, magnesium, and sulphur concentrations, organic matter content, and Mineral composition, mainly kaolinite and plagioclase. Soil type effects on Mineral Element composition of red cabbage could have important implications for increasing Mineral Element concentration in crops to alleviate Mineral Element deficiencies in human diets.
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Mineral Element composition of cabbage as affected by soil type and phosphorus and zinc fertilisation
Plant and Soil, 2019Co-Authors: Paula Pongrac, J W Mcnicol, Allan Lilly, Jacqueline A Thompson, Gladys Wright, Philip J White, S J HillierAbstract:Background and aims The effects of phosphorus and zinc applications on phosphorus and zinc concentrations in plants grown in different soil types have rarely been investigated. The aim of this study was to evaluate the effects of different soil types and phosphorus and zinc addition on growth and Mineral Element composition of red cabbage (Brassica oleracea var. capitata L. cv. Red Drumhead).