Search

Abstract\nNOVELTY STATEMENTRice is the staple food for 1/3 of the world’s population, but soil pollution with cadmium (Cd) is harmful to rice production and human health. Therefore, how to reduce the Cd content in rice grains is a hot topic worldwide. However, so far, little is known about Cd remediation technologies for paddy soils from the perspective of patents. Therefore, a meta-analysis was performed to assess the effects of measures based on 1402 observations from 336 patents from 2011 to 2021. The spatio-temporal analysis showed that the number of patents was positively related to the general economic development of the country, but hardly related to the regional economy or the level of provincal Cd pollution. The meta-analysis showed that the overall effect of Cd reduction was slightly higher for combined technologies (59%) than for single technologies (57%). Among all technology classifications, soil applications, which are mainly based on nutritional elements, were the most commonly used technology that could reduce the Cd content in rice grains by 57%. The plant biotechnology was the most effective and could reduce Cd content in rice grains by 76%. Further analysis showed that macronutrients (calcium, phosphorus, and sulfur) were preferred in soil amendments, while micronutrients (silicon, zinc, and selenium) were preferred in foliar amendments. NRAMP5 and HMA3 were the most important genes for manipulating Cd uptake in rice, while Bacillus and Pseudomonas were the most important bacterial taxa for bioremediation of Cd. Overall, this study compiled data on Cd remediation of paddy soil from 10 years of Chinese patents, providing a theoretical basis for better production of low Cd crops and protection of human health.Patents are an indicator and promoter of theoretical innovation and technological improvement. However, little is known about Cd remediation technologies for paddy soils and rice grains from the perspective of patents. In this study, the first dataset of soil Cd remediation and rice safety production measures from the Chinese patents in the past 10 years was established. Then it evaluated the effect of each measure using meta-analysis and pointed out the future direction of research to find better solutions for Cd remediation. [ABSTRACT FROM AUTHOR]

Oligosaccharides are one of the major bioactive components in Codonopsis pilosula. The present study was to investigate the protective effect of C. pilosula oligosaccharides (CPO) on d-galactose (D-Gal)-induced aging and to illuminate the underlying mechanisms. The results indicated that CPO effectively increased the growth rate as indicated by body weight, attenuated the decline of thymus and liver indexes, and mitigated the pathological liver injury compared with model group rats. CPO could elevate the activities of anti-oxidative enzymes, including CAT, GSH-Px, and SOD, and reduce MDA level in serum, improve SOD and GSH-Px activities in liver, down-regulate the phosphorylation of MAPK cascade signal transduction components – ERK, JNK, and p38, and inhibit the activation of downstream NF-κB signaling. In addition, CPO treatment noticeably prevented the overexpression of inflammatory factors such as TNF-α, IL-6, and IL-1β in serum, inhibited the expression of apoptosis-related proteins caspase-3, caspase-9, and the ratio of Bax/Bcl-2 in liver caused by the inflammatory cascade, reduced cell apoptosis, and improved liver damage. The above studies suggested that CPO could effectively mitigate the D-Gal-induced aging, and the underlying mechanism might be closely related to ROS-induced oxidative stress, inflammation, and apoptosis. [ABSTRACT FROM AUTHOR]