scholarly journals Changes in Metal Distribution, Vegetative Growth, Reactive Oxygen and Nutrient Absorption of Tagetes patula under Soil Cadmium Stress

Horticulturae ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 69
Author(s):  
Hongzhou Shi ◽  
Yangmei Wang ◽  
Hong Chen ◽  
Fuxiang Deng ◽  
Yongan Liu ◽  
...  
Keyword(s):  
Phosphorus Content ◽  
Reactive Oxygen ◽  
Cadmium Stress ◽  
Nutrient Absorption ◽  
Tagetes Patula ◽  
Nitrogen Absorption ◽  
Nutrient Contents ◽  
Root Shoot Ratio ◽  
Soil Cadmium ◽  
Flowering Process

Phytoremediation with hyperaccumulator plants has been recognized as a potential way for the clearing of cadmium (Cd)-contaminated soil. In this study, hyperaccumulator Tagetes patula was treated with seven concentrations of Cd, ranging from 0 to 300 mg kg−1. The Cd enrichment and nutrient contents in different organs during different growth phases were investigated. Under Cd concentrations ≤75 mg kg-1, the morphological growth of T. patula did not change significantly regardless of growth stage. However, when Cd concentration exceeded 150 mg kg−1, the morphological growth was remarkedly inhibited. The root/shoot ratio remained unchanged except for at 300 mg kg−1. In addition, Cd negatively influenced the flowering process at the concentration of 300 mg kg−1. Cd content increased significantly in Cd-treated plants. Nitrogen absorption was increased under Cd treatments, and phosphorus content was also increased under concentration ≤150 mg·kg−1. However, the potassium content in the flower was decreased under 300 mg kg−1. Furthermore, the contents of H2O2, O2− and malondialdehyde were increased during the seedling phase, especially when Cd concentration was ≥150 mg kg−1. In summary, T. patula showed a strong ability to tolerate Cd, and such ability might be explained by nutrient absorption and reactive oxygen clearness.

Effects of exogenous spermidine on poplar resistance to leaf and root herbivory as affected by soil cadmium stress

2021 ◽  
Vol 288 ◽  
pp. 112467
Author(s):  
Siyu Qin ◽  
Zhengqin Wu ◽  
Jiayao Tang ◽  
Guoqing Zhu ◽  
Gang Chen ◽  
...  
Keyword(s):  
Cadmium Stress ◽  
Root Herbivory ◽  
Soil Cadmium ◽  
Exogenous Spermidine

scholarly journals INFLUENCE OF DIETARY CALCIUM-PHOSPHORUS LEVELS ON APPARENT ABSORPTION OF MINERALS AND NITROGEN DURING GROWTH AND REPRODUCTION IN GILTS

1984 ◽  
Vol 64 (2) ◽  
pp. 491-494
Author(s):  
R. R. GRANDHI
Keyword(s):  
Key Words ◽  
Dietary Calcium ◽  
Nutrient Absorption ◽  
Nitrogen Absorption ◽  
Apparent Absorption ◽  
Key Words Calcium ◽  
Calcium Phosphorus ◽  
Phosphorus Levels ◽  
Growth And Reproduction

A higher Ca-P intake during finishing, gestation and lactation periods increased (P < 0.05) the apparent absorption (g/day) of Ca and P during all three periods. Nutrient absorption appeared to differ for Lacombe and Yorkshire gilts. Key words: Calcium, phosphorus, nitrogen, absorption, gilts

scholarly journals The Effects of Magnetic Treatment On Seedling Growth, Nitrogen Metabolism, And Mineral Nutrient Contents In Populus×Euramericana 'Neva' Under Cadmium Stress

2021 ◽  
Author(s):  
Xiumei Liu ◽  
Fengyun Ma ◽  
Lu Wang ◽  
Hong Zhu ◽  
Shiyuan Meng ◽  
...  
Keyword(s):  
Seedling Growth ◽  
Root Morphology ◽  
Glutamate Synthase ◽  
Cadmium Stress ◽  
Magnetic Treatment ◽  
Mineral Nutrient ◽  
Cd Stress ◽  
Nutrient Metabolism ◽  
Nutrient Contents ◽  
Populus Euramericana

Abstract Background: The potted experiment was carried out to investigate the mechanism of nutrient metabolism and seedling growth caused by magnetic treatment (MT) following exposure to cadmium (Cd) stress. One-year-old seedlings of Populus×euramericana 'Neva' were treated with different Cd(NO3)2 solutions for 30 days. Properties of seedling growth and root morphology were promoted by MT under Cd exposure.Results: Contents of ammonium (NH4+-N), nitrate (NO3--N), and total nitrogen (TN) in leaves, also NH4+-N and TN in roots, were increased by MT combined with Cd-stress, although NO3--N content was decreased. Activities of nitrate reductase (NR), nitrite reductase (NiR), glutathione reductase (GR), and glutamate synthase (GOGAT) in leaves and activities of NR, GS and GOGAT in roots were stimulated by MT; conversely, NiR activity in roots was inhibited. MT improved the synthesis of cysteine (Cys) and glutamine (Gln) in leaves and reduced the contents of glutamic acid (Glu) and glycine (Gly), while contents of Cys, Glu, Gln, and Gly were increased in roots. (4) The contents of Ca, Mg, Fe, Mn, Zn and Cu were increased by MT under Cd stress in leaves, whereas content of K was reduced. In roots, contents of K, Ca, and Fe were increased by MT under Cd-stress, but the contents of Na, Mg, Mn, Zn, and Cu were decreased.Conclusions: Magnetization could regulate the uptake of mineral nutrients by roots and translocation from the roots to aboveground parts by affecting the root morphology. MT could also improve nitrogen assimilation and the synthesis of free amino acids by stimulating the activities of key enzymes.

Assessing the Diffuse Phosphorus Input from Subsurface to Surface Waters in the Catchment Area of the Lower River Spree (Germany)

1993 ◽  
Vol 28 (3-5) ◽  
pp. 337-347 ◽  
Author(s):  
E. Driescher ◽  
J. Gelbrecht
Keyword(s):  
Surface Waters ◽  
Phosphorus Content ◽  
Agricultural Land ◽  
Bank Filtration ◽  
Nutrient Contents ◽  
Phosphorus Sources ◽  
Phosphorus Contamination ◽  
Glaciofluvial Deposits ◽  
Subsurface Waters ◽  
Phosphorus Levels

The proportion of nonpoint phosphorus sources in the eutrophication process of surface waters is higher than generally assumed. In the surroundings of Berlin (glaciofluvial deposits and moraine areas) the phosphorus content of some subsurface waters reaches levels of several hundred µgP/l. As surface waters are mainly fed by groundwater in this area, nutrient contents in groundwater may become of great importance when other phosphorus sources are eliminated. Investigations in unpolluted areas are a prerequisite to decide whether higher phosphorus levels in groundwater are of natural origin or the result of contamination processes. The phosphorus background was shown to be very different and dependent on the depth below groundwater surface, content of iron, and redox conditions in the aquifer. Wastewater land treatment, bank filtration, agricultural land use, and degradation of lowland bogs were found to be sources of phosphorus contamination of aquifers. The results of observations are reported.

Cadmium Stress in Barley: Growth, Leaf Pigment, and Protein Composition and Detoxification of Reactive Oxygen Species

2006 ◽  
Vol 29 (3) ◽  
pp. 451-468 ◽  
Author(s):  
Klimentina Demirevska-Kepova ◽  
Lyudmila Simova-Stoilova ◽  
Zlatimira Petrova Stoyanova ◽  
Urs Feller
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Protein Composition ◽  
Cadmium Stress ◽  
Oxygen Species ◽  
Leaf Pigment

scholarly journals Effects of Solanum nigrum, Crassocephalum crepidioides and Bidens pilosa straws on the nutrients content of soil and grape seedlings under cadmium stress

2019 ◽  
Vol 136 ◽  
pp. 07011
Author(s):  
Kewen Huang ◽  
Xinyu Gao ◽  
Ling Xiao ◽  
Junjiang Shu ◽  
Qinyuan Li ◽  
...  
Keyword(s):  
Phosphorus Content ◽  
Cadmium Stress ◽  
Solanum Nigrum ◽  
Available Phosphorus ◽  
Cd Stress ◽  
Bidens Pilosa ◽  
Promoting Effect ◽  
Soil Application ◽  
Total Potassium ◽  
Soil Phosphatase

In order to improve the nutrients absorption of grape seedlings under cadmium (Cd) stress, the effects of Solanum nigrum, Crassocephalum crepidioides and Bidens pilosa straws on the nutrients content of soil and grape seedlings under Cd stress were studied by pot experiment. According to the results, the activity of soil phosphatase, soil catalase and soil sucrose by soil application of straws observed higher than CK to varying degrees. And soil application of straws increased the contents of soil alkaline nitrogen and available phosphorus in different degrees, while soil application of B. pilosa straws decreased the content of soil available potassium. In addition, the soil application of straws had a certain promoting effect on the total nitrogen content, total phosphorus content and total potassium content of grape seedlings compared with the CK. Among all treatments, C. crepidioides straws maximized the nutrients content in the shoots of grape seedlings, which could provide reference for grape cultivation in Cd-contaminated areas.

Effects of Intercropping Patterns on Cadmium Tolerance of Perilla Frutescens and Soybean

2021 ◽  
Author(s):  
bolun han ◽  
Wan Zhang ◽  
Rongrong Fan ◽  
Rui Jing ◽  
Ruiyu Lin ◽  
...  
Keyword(s):  
Stress Condition ◽  
Cadmium Stress ◽  
Absorption Capacity ◽  
Perilla Frutescens ◽  
Total Chlorophyll ◽  
Heavy Metal Detoxification ◽  
Enrichment Coefficient ◽  
Cadmium Absorption ◽  
Soil Cadmium ◽  
Potential Strategy

Abstract In this study, we intercropped hyperaccumulator Perilla frutescens with soybean to explore the effects of intercropping under cadmium stress based on the physiological growth indexes of plant, cadmium absorption capacity, and soil cadmium forms Experiments showed that compared with mono-cropping, intercropping soybean’s biomass, catalase (CAT) activity, peroxidase (POD) activity, total chlorophyll and net photosynthetic rate were significantly increased by 1042%~10658%, 1578%~7381%, 1345%~2337%, 376%~1500% and 7121%~31278%, while P frutescens’s significantly decreased by 9387%~9507%, 1562%~2572%, 12056%~15331%, 715%~756% and 3056%~5076% Under 5 and 10 mg kg-1 Cd treatments, the Cd content in roots, stems, leaves, pods and grains of intercropping soybean decreased significantly by 1072%~3174%, 1488%~2168%, 1995%~3413%, 2222%~5270% and 791%~1786% along with enrichment coefficient decreasing by 1486%~2787%, while those of P frutescens significantly increased by 8700%~2141%, 948%~2155%, 2305%~3766% and 1818%~9412% along with enrichment coefficient significantly increasing by 2000%~7775% Additionally, citric acid, succinic acid, oxalic acid and tartaric acid worked importantly in heavy metal detoxification in plants Strikingly, the content of soil exchangeable Cd (EXC) under intercropping was the highest, even higher than that of mono-cropping soybean and P frutescens, which accounted for 37%~42% under the same stress condition Therefore, intercropping Perilla frutescens with soybean provide a potential strategy for Cd phytoremediation

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