[In-situ Remediation Effect of Cadmium-polluted Agriculture Land Using Different Amendments Under Rice-wheat Rotation].

Exploring the effects of one-time amendment treatments on cadmium (Cd)-contaminated farmland soils is beneficial for providing a theoretical basis to effectively prevent Cd pollution in farmland soils and ensure the safe production of crops. Five amendments, including straw biochar, fly ash, sepiolite, white marble powder, and shale (particle size <0.2 mm, application rate 2.

Breast-conserving in centrally located breast cancer patients confirmed safe by SEER based study.

Background: Due to the lack of high-level data, there is still controversy over the oncological safety of breast conservation in patients with centrally located breast cancer. This study aimed to assess the safety of breast-conserving surgery in patients with centrally located breast cancer based on the data from the Surveillance, Epidemiology, and End Results (SEER) database.

Methods: We collected data for all cases diagnosed with breast cancer who underwent breast-conserving surgery from 2012-2014 in the SEER database.

[Effects of Different Amendments on Cadmium Accumulation in Rice Safety in Cadmium-Contaminated Farmland Under Two Flooding Treatments].

Cadmium (Cd) accumulation in rice has become a serious public concern; thus, it is important to find an effective approach to reducing Cd accumulation in rice grains to ensure food safety. To investigate the effects of different amendments on Cd accumulation in rice in Cd-contaminated farmland under different flooding treatments, a field experiment with three amendments (jade powder, biochar, and fly ash) and two flooding treatments (intermittent flooding and flooding throughout the whole growth period) was conducted. The results showed that:① without amendment application, the soil pH significantly increased, whereas the soil available Cd concentration decreased by 3.

lncRNA KLF3-AS1 Suppresses Cell Migration and Invasion in ESCC by Impairing miR-185-5p-Targeted KLF3 Inhibition.

Esophageal squamous cell carcinoma (ESCC) is a common cancer occurring in males and females worldwide. Accumulating evidence continues to highlight the crucial roles of long non-coding RNAs (lncRNAs) in the process of tumorigenesis. However, the regulatory mechanism of lncRNAs in ESCC remains unclear.

[Characterization of cadmium uptake kinetics in cadmium pollution-safe rice material.].

The characteristics of cadmium (Cd) uptake kinetics in a pollution-safe rice variety of D62B were studied in a hydroponic experiment under different Cd levels and stress time, with a common variety Luhui17 as the control. The results showed that Cd uptake in root of D62B was significantly lower than that of Luhui17 under different stress times. The differences in Cd uptake of the two rice varieties increased with the extension of absorption time.

[Characteristics of soil aggregates and inorganic phosphorus fractions in soils returned from cropland to tea].

With soils returned from cropland to tea planting for different ages (2-3, 9-10 and 16-17 years old) as the object, and the nearby cropland soil as the control in Zhongfeng Township, Mingshan County, Ya'an, Sichuan Province, field investigation and laboratory analysis were combined to investigate the characteristics of soil aggregates and inorganic phosphorus fractions in response to the returning from cropland to tea. The particle size of >2 mm was the dominant aggregate size for the cropland and tea soils. With the increasing age, soil aggregate content of >5 mm particle size increased, while that of <5 mm particle size decreased gradually.

[Root morphological characteristics of barley genotype with high phosphorus efficiency under phosphorus stress].

A pot experiment was carried out to test the effects of phosphorus (P) supply levels (25, 50, and 75 mg P2O5 . kg-1) with two P genotype (efficient DH110+ and DH147, inefficient DH49) barleys on root morphology and the relationships between root morphology and P uptake. The results showed that barley biomass and P uptake were significantly reduced by low P stress.

[Topographical and pedological factors adapted to the growth of domestic truffles (Tuber indicum)].

Topographical and pedological factors at 9 sites of Tuber indicum in Yunnan, Sichuan and Tibet were studied by using principal component analysis in order to determine the connection between truffle-growth with topographic factors and soil factors. Results showed that: 1) The 5 principal components selected from 15 topographical and pedological factors had a great cumulative contribution, up to 87.5%.

[Ecological stoichiometry of soil carbon, nitrogen and phosphorus within soil aggregates in tea plantations with different ages].

This study selected 4 tea plantations with different ages (12-15, 20-22, 30-33 and >50 year-old) located in Ya' an, Sichuan Province, China to investigate the distribution patterns of soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) , and to examine the ecological stoichiometric characteristics of C, N and P within soil aggregates. The results showed that the coefficients of variation of SOC, TN and TP were 17.5%, 16.

[Effects of phosphorus sources on phosphorus fractions in rhizosphere soil of wild barley genotypes with high phosphorus utilization efficiency].

High P-efficiency (IS-22-30, IS-22-25) and low P-efficiency (IS-07-07) wild barley cultivars were chosen to evaluate characteristics of phosphorus uptake and utilization, and properties of phosphorus fractions in rhizosphere and non-rhizosphere in a pot experiment with 0 (CK) and 30 mg P · kg(-1) supplied as only Pi (KH2PO4), only Po (phytate) or Pi + Po (KH2PO4+ phytate). The results showed that dry matter and phosphorus accumulation of wild barley in the different treatments was ranked as Pi > Pi + Po > Po > CK. In addition, dry matter yield and phosphorus uptake of wild barley with high P-efficiency exhibited significantly greater than that with low P-efficiency.

[Effect of silicon on translocation and morphology distribution of lead in soil-tobacco system].

Taking tobacco as test material, a pot experiment was conducted to study the effect of silicon on translocation of lead (Pb) form soil to tobacco in order to explore effective measures for reducing Pb concentration in tobacco leaf. The results showed that silicon application promoted the transformation of exchangeable Pb into Fe-Mn oxide-bound Pb in non-rhizospheric soil, and into Fe-Mn oxide-bound Pb and residual Pb in rhizospheric soil, which decreased the availability and mobility of Pb in the soil. Silicon application significantly reduced the Pb uptake of tobacco, with the content of Pb being decreased by 6.

[Characteristics of dry matter production and nitrogen accumulation in barley genotypes with high nitrogen utilization efficiency].

A pot experiment was conducted under low (125 mg x kg-1) and normal (250 mg x kg(-1)) nitrogen treatments. The nitrogen uptake and utilization efficiency of 22 barley cultivars were investigated, and the characteristics of dry matter production and nitrogen accumulation in barley were analyzed. The results showed that nitrogen uptake and utilization efficiency were different for barley under two nitrogen levels.

[Characteristics of distribution and transportation of rice genotype with high nitrogen utilization efficiency at the late growth stage].

Taking a high nitrogen utilization efficiency rice genotype (NUE(H)) as test material and a low nitrogen utilization efficiency genotype (NUE(L)) as control, a pot experiment was carried out with nitrogen treatments of 100 (low) and 200 mg x kg(-1) (normal), to analyze the differences in nitrogen accumulation distribution, translocation and transport efficiency between the two genotypes. The results showed that NUE(H) could still maintain a high yield and a high nitrogen utilization efficiency at the low rate of nitrogen fertilization, with the grain yield being 1.75 times of that of NUE(L), and the nitrogen recovery efficiency of 50.

[Screening of wild barley genotypes with high phosphorus use efficiency and their rhizosphere soil inorganic phosphorus fractions].

A pot experiment was conducted to investigate the differences of 16 wild barley genotypes in phosphorus (P) uptake and use efficiency under the same P supply levels and the characteristics of inorganic P fractions in rhizosphere and non-rhizosphere soils of high P use efficiency genotypes. There existed greater differences in the P use efficiency for dry matter production at jointing stage (CV = 11.6%) and flowering stage (CV = 12.

Reconstructing a flavodoxin oxidoreductase with early amino acids.

Primitive proteins are proposed to have utilized organic cofactors more frequently than transition metals in redox reactions. Thus, an experimental validation on whether a protein constituted solely by early amino acids and an organic cofactor can perform electron transfer activity is an urgent challenge. In this paper, by substituting "late amino acids (C, F, M, T, W, and Y)" with "early amino acids (A, L, and V)" in a flavodoxin, we constructed a flavodoxin mutant and evaluated its characteristic properties.

[Differences in phosphorus utilization efficiency among wheat cultivars].

A pot experiment was conducted to study the differences in the biomass, phosphorus concentration, phosphorus use efficiency for dry matter, and phosphorus use efficiency for grain yield among different wheat cultivars under low phosphorus supply, aimed to screen the wheat varieties with high phosphorus use efficiency. For the test cultivars, their biomass per plant at tillering, jointing, flowering, and maturing stages was 0.46-1.

[Genotype difference in nitrogen utilization efficiency of wheat].

A pot experiment with 130 wheat cultivars was conducted to study their genotype difference in biomass per plant, nitrogen accumulation, and nitrogen production efficiency under the same level of nitrogen supply, aimed to screen the high efficiency nitrogen-utilizing wheat genotypes. The results showed that the biomass per plant of the cultivars at jointing, heading, and maturing stages was within the ranges of 1.06-3.

[Spatial distribution pattern of soil nitrogen in croplands at county scale and related affecting factors].

By using geostatistics and GIS, this paper studied the spatial distribution of soil nitrogen in the croplands in Shuangliu County of Sichuan Province, China, and analyzed the related affecting factors. There was a moderate spatial correlation between the contents of total nitrogen (TN) and available nitrogen (AN) in the cropland soils, and the spatial correlation distance was 15480 m for TN and 26980 m for AN. The regions with higher soil TN content were mainly in the north of the County, i.

[Research advances in plant lead tolerance and detoxification mechanism].

To have an overall understanding about the physiological mechanisms of plants in their lead (Pb) absorption, transportation, accumulation, and detoxification is the prerequisite of the phytoremediation of Pb-polluted soil. This paper reviewed the research advances in the mechanisms of plant Pb-adaptation and recovery, including the functions of cell wall and vacuole in Pb-inactivation and sequestration in plant cells, the effects of plant root exudates on Pb bioavailability, the roles of antioxidative enzymes dismutase (SOD), peroxidase (POD), catalase (CAT), glutathione reductase (GR), and ascorbate peroxidase (APX), and of antioxidants phytochelatins (PCs) and glutathione in Pb detoxification, and the expression and function of metallothionein and Pb-specific genes. The further researches on the plant's Pb-tolerance and detoxification mechanisms as well as the technologies for phytoremediation of Pb-contaminated environments were prospected.

[Effects of exogenous Ca2+ on the growth and Zn accumulation of two Sedum alfredii Hance ecotypes].

A hydroponic study was conducted to investigate the biomass, root morphology, and zinc (Zn), calcium (Ca) and sulfur (S) contents of two Sedum alfredii ecotypes under effects of different concentration calcium (Ca2+) addition. The results showed that with increasing exogenous Ca2+ concentration, the dry mass of the two S. alfredii ecotypes increased, and the shoot dry mass of hyperaccumulation ecotype increased significantly (P <0.