[Objective] The epigenetic effects of special plant nutritional elements （SP-NE） on 4 generations of conventional rice were investigated. [Method] The 4 gener-ations of a conventional rice cultivar were al treated w...[Objective] The epigenetic effects of special plant nutritional elements （SP-NE） on 4 generations of conventional rice were investigated. [Method] The 4 gener-ations of a conventional rice cultivar were al treated with the SPNE. The effects of SPNE on the yield of the 4 generations were investigated. From the 1st generation to the 4th generations, some seeds were treated with the SPNE and water alterna-tively, and some seeds were treated with the SPNE persistently. Under these condi-tions, the effects of SPNE on the yield of rice were studied. In addition, the epige-netic effects of spraying times of SPNE on the yield of rice within the same gener-ation were studied. According to the national standard for pol utant content in food （GB 2762-2012）, the heavy metal content, particularly the Cd content, and the pro-tein content in rice grains were determined. [Result] The increase and the epigenetic increase of yield of rice treated with SPNE were al enlarged generation by genera-tion. The yield differed among different plots even under the same SPNE treatment. But the yield increase was similar within the same plot. The epigenetic effects of spraying times of SPNE on the yield were also similar. The pol utant content in rice grains was al less than the limited content required by the national standard. The Cd content was lower and the protein content was higher in the rice treated with SPNE compared to that in the rice treated with water, indicating the rice treated with SPNE was more safe and nutritional. [Conclusion] We hope to provide a theo-retical basis for the production of conventional rice.展开更多
In this study, a series of experiments were conducted to investigate the epigenetic effects of special plant nutritional elements （SPNE） on two continuous generations of conventional rice. In the first generation, c...In this study, a series of experiments were conducted to investigate the epigenetic effects of special plant nutritional elements （SPNE） on two continuous generations of conventional rice. In the first generation, conventional rice cultivars were treated with SPNE and clean water, respectively; in the second generation, conventional rice cultivars were divided into four groups： （1） SPINE spaying in the first-generation and SPNE spaying in the second-generation; （2） clean water spaying in the first-generation and SPNE spaying in the second-generation; （3） SPNE spaying in the first-generation and clean water spaying in the second-generation; （4） clean water spaying in the first-generation and clean water spaying in the second-generation. The results showed that SPNE could improve fresh grain yield and dry grain yield of rice ; especially, dry grain yield of rice was improved more than fresh grain yield. Comparison results of two conventional rice cultivars in four groups confirmed that SPNE has epigenetic effects on rice in the second generation, thus improving the yield traits, chlorophyll content, protein content, amylase activity, peroxidase （POD） activity and superoxide dismutase （SOD） activity compared with control. Both these two conventional rice cultivars exhibited the best results in SPNE treatment. SPNE showed consistent trend of epigenetic effects on different rice cultivars but led to slightly different results.展开更多
Male-mediated developmental toxicity has been of concern for many years. The public became aware of male-mediated developmental toxicity in the early 1990s when it was reported that men working at Sellafield might be ...Male-mediated developmental toxicity has been of concern for many years. The public became aware of male-mediated developmental toxicity in the early 1990s when it was reported that men working at Sellafield might be causing leukemia in their children. Human and animal studies have contributed to our current understanding of male-mediated effects. Animal studies in the 1980s and 1990s suggested that genetic damage after radiation and chemical exposure might be transmitted to offspring. With the increasing understanding that there is histone retention and modification, protamine incorporation into the chromatin and DNA methylation in mature sperm and that spermatozoal RNA transcripts can play important roles in the epigenetic state of sperm, heritable studies began to be viewed differently. Recent reports using molecular approaches have demonstrated that DNA damage can be transmitted to babies from smoking fathers, and expanded simple tandem repeats minisatellite mutations were found in the germline of fathers who were exposed to radiation from the Chernobyl nuclear power plant disaster. In epidemiological studies, it is possible to clarify whether damage is transmitted to the sons after exposure of the fathers. Paternally transmitted damage to the offspring is now recognized as a complex issue with genetic as well as epigenetic components.展开更多
基金Supported by the Serving Economic and Social Development Program of Guangzhou University~~
文摘[Objective] The epigenetic effects of special plant nutritional elements （SP-NE） on 4 generations of conventional rice were investigated. [Method] The 4 gener-ations of a conventional rice cultivar were al treated with the SPNE. The effects of SPNE on the yield of the 4 generations were investigated. From the 1st generation to the 4th generations, some seeds were treated with the SPNE and water alterna-tively, and some seeds were treated with the SPNE persistently. Under these condi-tions, the effects of SPNE on the yield of rice were studied. In addition, the epige-netic effects of spraying times of SPNE on the yield of rice within the same gener-ation were studied. According to the national standard for pol utant content in food （GB 2762-2012）, the heavy metal content, particularly the Cd content, and the pro-tein content in rice grains were determined. [Result] The increase and the epigenetic increase of yield of rice treated with SPNE were al enlarged generation by genera-tion. The yield differed among different plots even under the same SPNE treatment. But the yield increase was similar within the same plot. The epigenetic effects of spraying times of SPNE on the yield were also similar. The pol utant content in rice grains was al less than the limited content required by the national standard. The Cd content was lower and the protein content was higher in the rice treated with SPNE compared to that in the rice treated with water, indicating the rice treated with SPNE was more safe and nutritional. [Conclusion] We hope to provide a theo-retical basis for the production of conventional rice.
文摘In this study, a series of experiments were conducted to investigate the epigenetic effects of special plant nutritional elements （SPNE） on two continuous generations of conventional rice. In the first generation, conventional rice cultivars were treated with SPNE and clean water, respectively; in the second generation, conventional rice cultivars were divided into four groups： （1） SPINE spaying in the first-generation and SPNE spaying in the second-generation; （2） clean water spaying in the first-generation and SPNE spaying in the second-generation; （3） SPNE spaying in the first-generation and clean water spaying in the second-generation; （4） clean water spaying in the first-generation and clean water spaying in the second-generation. The results showed that SPNE could improve fresh grain yield and dry grain yield of rice ; especially, dry grain yield of rice was improved more than fresh grain yield. Comparison results of two conventional rice cultivars in four groups confirmed that SPNE has epigenetic effects on rice in the second generation, thus improving the yield traits, chlorophyll content, protein content, amylase activity, peroxidase （POD） activity and superoxide dismutase （SOD） activity compared with control. Both these two conventional rice cultivars exhibited the best results in SPNE treatment. SPNE showed consistent trend of epigenetic effects on different rice cultivars but led to slightly different results.
文摘Male-mediated developmental toxicity has been of concern for many years. The public became aware of male-mediated developmental toxicity in the early 1990s when it was reported that men working at Sellafield might be causing leukemia in their children. Human and animal studies have contributed to our current understanding of male-mediated effects. Animal studies in the 1980s and 1990s suggested that genetic damage after radiation and chemical exposure might be transmitted to offspring. With the increasing understanding that there is histone retention and modification, protamine incorporation into the chromatin and DNA methylation in mature sperm and that spermatozoal RNA transcripts can play important roles in the epigenetic state of sperm, heritable studies began to be viewed differently. Recent reports using molecular approaches have demonstrated that DNA damage can be transmitted to babies from smoking fathers, and expanded simple tandem repeats minisatellite mutations were found in the germline of fathers who were exposed to radiation from the Chernobyl nuclear power plant disaster. In epidemiological studies, it is possible to clarify whether damage is transmitted to the sons after exposure of the fathers. Paternally transmitted damage to the offspring is now recognized as a complex issue with genetic as well as epigenetic components.
