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Relative contributions of soil chemistry, plant physiology and rhizosphere induced changes in speciation on Ni accumulation in plant shoots
Springer Science and Business Media LLC - Tập 255 - Trang 619-629 - 2003
The aim of this study is to rank the relative importance of soil properties, root uptake and root-to-shoot redistribution on the transfer of the trace element nickel from soil to the shoots of non hyperaccumulatings plants. Two contrasting soils and seven plant species have been studied using the radioactive isotope, 63Ni. Shoots and roots were analysed separately and the specific activity of each...... hiện toàn bộ
Effects of temperature and prior flooding on intensity and sorption of phosphorus in soil
Springer Science and Business Media LLC - Tập 95 - Trang 173-181 - 1986
The effects of temperature and prior flooding of soil on P sorption were examined in 2 soils having a rice-based cropping system and showing an induced P deficiency problem in flooded rice-uplant crop rotations. The P sorption capacity of soil increased with increasing temperature as well as with prior flooding, the effects of the latter were, howerver, dominant. The bonding energy of sorption, ca...... hiện toàn bộ
Deep placement of organic amendments in dense sodic subsoil increases summer fallow efficiency and the use of deep soil water by crops
Springer Science and Business Media LLC - Tập 359 - Trang 57-69 - 2012
Physical subsoil constraints limit crop production in many areas of southern Australia. There has been limited success in ameliorating these constraints. A field study commenced in 2005 at two adjacent field sites with and without a 4-year history of grazing lucerne, to determine whether the incorporation of organic (lucerne pellets and dynamic lifter at rates of 10–20 t ha−1) and inorganic (gypsu...... hiện toàn bộ
Transcriptome-wide identification and characterization of the copper and cadmium stress-responsive small RNAs and their targets in Arabidopsis thaliana
Springer Science and Business Media LLC - Tập 429 Số 1 - Trang 391-405 - 2018
Copper (Cu) and cadmium (Cd) are toxic to plants at high levels. The current situation that many crops are growing on the farmlands with Cu or Cd contamination leads to a big threat to food safety. Based on the small RNA (sRNA) sequencing data, hundreds of the sRNAs responsive to excessive Cu or Cd treatment were extracted. Degradome sequencing data enabled us to identify the targets of the metal ...... hiện toàn bộ
Sự cảm ứng enzyme trong việc hấp thụ ion bởi thực vật: Một hướng tiếp cận thực nghiệm Dịch bởi AI
Springer Science and Business Media LLC - Tập 34 - Trang 519-523 - 1971
Quá trình vận chuyển chủ động của sulfat trong các mô thực vật vừa bị cắt cho thấy có một giai đoạn cảm ứng từ 5 đến 15 giờ. Tính khả thi của cơ chế cảm ứng phụ thuộc vào việc chiết xuất một yếu tố ức chế hòa tan trong nước liên quan đến quá trình chuyển hóa tế bào. Actinomycin D và 5 fluorouracil ngăn chặn sự chuyển đổi sau cảm ứng sang quá trình vận chuyển chủ động cao hơn. Khi được thêm vào cuố...... hiện toàn bộ
#sự cảm ứng enzyme #hấp thụ ion #vận chuyển chủ động #thực vật #yếu tố ức chế
Methane and nitrous oxide emissions from direct-seeded and seedling-transplanted rice paddies in southeast China
Springer Science and Business Media LLC - Tập 374 - Trang 285-297 - 2013
The rice production is experiencing a shift from conventionally seedling-transplanted (TPR) to direct-seeded (DSR) cropping systems in Southeast Asia. Besides the difference in rice crop establishment, water regime is typically characterized as water-saving moist irrigation for DSR and flooding-midseason drainage-reflooding and moist irrigation for TPR fields, respectively. A field experiment was ...... hiện toàn bộ
A method for determining concentration profiles at the soil-root interface by thin slicing rhizospheric soil
Springer Science and Business Media LLC - Tập 68 - Trang 391-394 - 1982
A method is described for the determination of concentration gradients in the vicinity of plant roots. Plants are grown in small containers in which the roots are separated from the soil by a screen of nylon cloth. Root hairs but not roots penetrate the screen into the soil. In order to investigate the rhizospheric soil, the soil is frozen by liquid nitrogen and sliced into layers about 0.06 mm th...... hiện toàn bộ
Root distributions and elemental accumulations of Chinese brake (Pteris vittata L.) from As-contaminated soils
Springer Science and Business Media LLC - Tập 261 - Trang 109-116 - 2004
A field investigation was conducted to understand the root distributions and elemental accumulations of Chinese brake (Pteris vittata L.), an As-hyperaccumulator, grown in soils with a gradient of As concentration near an arsenic sulphide mine. The root distribution was affected not only by the levels of soil As, but also by soil texture. Plants grew better in sandy loam soils than in clay soils. ...... hiện toàn bộ
Kernel set in maize genotypes differing in nitrogen use efficiency in response to resource availability around flowering
Springer Science and Business Media LLC - Tập 272 Số 1-2 - Trang 101-110 - 2005
Water and Nutrient Dynamics in Surface Roots and Soils are not Modified by Short-term Flooding of Phreatophytic Plants in a Hyperarid Desert
Springer Science and Business Media LLC - Tập 279 - Trang 129-139 - 2006
Little is known of the mechanisms employed by woody plants to acquire key resources such as water and nutrients in hyperarid environments. For phreatophytic plants, deep roots are necessary to access the water table, but given that most nutrients in many desert ecosystems are stored in the upper soil layers, viable shallow roots may be equally necessary for nutrient uptake. We sought to better und...... hiện toàn bộ
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