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| 1 | Genetic analysis and fine mapping of an enclosed panicle mutant esp2 in rice (Oryza sativa L.)显示文摘The phenomenon of panicle enclosure in rice is mainly caused by the shortening of uppermost internode.Elucidating the molecular mechanism of panicle enclosure will be helpful for solving the problem of panicle enclosure in male sterile lines and creating new germplasms in rice.We acquired a monogenic recessive enclosed panicle mutant,named as esp2 (enclosed shorter panicle 2),from the tissue culture progeny of indica rice cultivar Minghui-86.In the mutant,panicles were entirely enclosed by flag leaf sheaths and the uppermost internode was almost completely degenerated,but the other internodes did not have obvious changes in length.Genetic analysis indicated that the mutant phenotype was controlled by a recessive gene,which could be steadily inherited and was not affected by genetic background.Apparently,ESP2 is a key gene for the development of uppermost internode in rice.Using an F 2 population of a cross between esp2 and a japonica rice cultivar Xiushui-13 as well as SSR and InDel markers,we fine mapped ESP2 to a 14-kb region on the end of the short arm of chromosome 1.According to the rice genome sequence annotation,only one intact gene exists in this region,namely,a putative phosphatidylserine synthase gene.Sequencing analysis on the mutant and the wild type indicated that this gene was inserted by a 5287-bp retrotransposon sequence.Hence,we took this gene as a candidate of ESP2.The results of this study will facilitate the cloning and functional analysis of ESP2 gene. | GUAN HuaZhong DUAN YuanLin LIU HuaQing CHEN ZhiWei ZHUO Ming ZHUANG LiJun QI WenMing PAN RunSen MAO DaMei ZHOU YuanChang WANG Feng WU WeiRen | 2011 | Chinese Science Bulletin2011，56，14： | 6 |
| 2 | Monitoring Soil Salt Content Using HJ-1A Hyperspectral Data: A Case Study of Coastal Areas in Rudong County, Eastern China显示文摘Hyperspectral data are an important source for monitoring soil salt content on a large scale. However, in previous studies, barriers such as interference due to the presence of vegetation restricted the precision of mapping soil salt content. This study tested a new method for predicting soil salt content with improved precision by using Chinese hyperspectral data, Huan Jing-Hyper Spectral Imager(HJ-HSI), in the coastal area of Rudong County, Eastern China. The vegetation-covered area and coastal bare flat area were distinguished by using the normalized differential vegetation index at the band length of 705 nm(NDVI705). The soil salt content of each area was predicted by various algorithms. A Normal Soil Salt Content Response Index(NSSRI) was constructed from continuum-removed reflectance(CR-reflectance) at wavelengths of 908.95 nm and 687.41 nm to predict the soil salt content in the coastal bare flat area(NDVI705 < 0.2). The soil adjusted salinity index(SAVI) was applied to predict the soil salt content in the vegetation-covered area(NDVI705 ≥ 0.2). The results demonstrate that 1) the new method significantly improves the accuracy of soil salt content mapping(R2 = 0.6396, RMSE = 0.3591), and 2) HJ-HSI data can be used to map soil salt content precisely and are suitable for monitoring soil salt content on a large scale. | LI Jianguo PU Lijie ZHU Ming DAI Xiaoqing XU Yan CHEN Xinjian ZHANG Lifang ZHANG Runsen | 2015 | Chinese Geographical Science2015，25，2： | 4 |
| 3 | Development of the Life Gatekeeper suicide prevention training programme in China:a Delphi study显示文摘Background Youth suicide has been a pressing public mental health concern in China,yet there is a lack of gatekeeper intervention programmes developed locally to prevent suicide among Chinese adolescents.Aims The current Delphi study was the first step in the systematic development of the Life Gatekeeper programme,the first gatekeeper programme to be developed locally in China that aims to equip teachers and parents with the knowledge,skills and ability to identify and intervene with students at high risk of suicide.Methods The Delphi method was used to elicit a consensus of experts who were invited to evaluate the importance of training content,the feasibility of the training delivery method,the possibility of achieving the training goals and,finally,the appropriateness of the training materials.Two Delphi rounds were conducted among local experts with diversified professional backgrounds in suicide research and practice.Statements were accepted for inclusion in the adjusted training programme if they were endorsed by at least 80%of the panel.Results Consensus was achieved on 201 out of 207 statements for inclusion into the adapted guidelines for the gatekeeper programme,with 151 from the original questionnaire and 50 generated from comments of the panel members.These endorsed statements were synthesised to develop the content of the Life Gatekeeper training programme.Conclusions This Delphi study provided an evidence base for developing the first gatekeeper training programme systematically and locally in China.We hope that the current study can pave the way for more evidence-based suicide prevention programmes in China.Further study is warranted to evaluate the effectiveness of the Life Gatekeeper training programme. | Chengxi Cai Chen Yin Yongsheng Tong Diyang Qu Yunzhi Ding Daixi Ren Peiyu Chen Yi Yin Jing An Runsen Chen | 2023 | General Psychiatry2023，36，5： | 0 |
| 4 | Using machine learning to identify factors related to nitrous oxide(laughing gas)relapse among adolescents显示文摘Introduction Nitrous oxide(N2O/laughing gas)has been used in medical practice as an inhalational anaesthetic and analgesic for more than 150 years.1 In the past decades,N2O exhibited increasing popularity among recreational drug users for its euphoric effects,potentially through its interaction with the endogenous opioid system.2 Recreational use of N2O emerged as the seventh most used drug globally in the past decade.3 The use of N2O can cause myelopathy,myocardial injury,anaemia,severe mood disorders,sensory and motor neuropathy,and psychotic symptoms.45 Prolonged N2O intake results in vitamin B12 deficiency and inhibits methionine synthetase,folate and DNA production,leading to plasma homocysteine(HCY)level elevation and bone marrow haematopoietic dysfunction.6 This study aimed to investigate the neurological symptoms of nitrous oxide use and then explore the relapse trajectory and risk factors for relapse. | Jie Xu Yi Zhang Chang Lei Pei Sun Runsen Chen Tifei Yuan | 2023 | General Psychiatry2023，36，2： | 0 |
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