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Carbon Monoxide Alleviates Wheat Seed Germination Inhibition and Counteracts Lipid Peroxidation Mediated by salinity

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Journal of Integrative Plant Biology 2006年第10期48卷 1168-1176页

作者： sheng xu zhi-sheng sa ze-yu cao wei xuan ben-kai huang teng-fang ling qiong-ying hu wen-biao shen College of Life Sciences Laboratory Centre of Life Sciences Nanjing Agricultural University Nanjing 210095 China

Recently In animals, endogenous carbon monoxide （CO）, like nitric oxlde, was implicated as another Important physiological messenger or bioactive molecule. However, little information is known about the physlologlcal roles of CO in the whole plant. In the present study, we report that different concentrations of the 130 donor hematin （0.1, 1.0 and 10.0 μmol/L） alleviated wheat （Tilticum aestivum L. Yangmai 158） seed germination Inhlbltlon caused by 250 mmol/L NaCI stress In a dose-dependent manner. These responses were also proved by the addltion of different gaseous CO aqueous solutions from 0.1% to 100.0% of saturation. Among these treatments, the effect of 1.0 μmol/L hematin and 1.0% saturation of CO aqueous solution were the most obvlous. Furthermore, compared with non-hematin treatment, the degradation of storage reserves In wheat seeds was also accelerated. Time-course analyses showed that application of hematln dose-dependently Increased the activities of superoxide dismutase, catalase, ascorbate peroxidase, and guaiacol peroxidase activities, thus decreasing the lipid peroxidation In germinating wheat seed subjected to salt stress. Meanwhile, the responses of hematin were specific for CO because the addition of the CO scavenger hemoglobln （0.2 g/L） blocked the various actions of 1.0 μmol/L hematin. Taken together, the results of the present study demonstrate that CO, at a low concentration, is able to attenuate the seed germlnation Inhibition produced by salinity stress and counteract the lipid peroxidation in germinating wheat seeds.

关键词： carbon monoxide lipid peroxidation salt stress seed germination storage reserve degradation wheat

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Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-Xin Liu yue huang Guang-Cheng Xiao Qing-Cui Bu Jin-Lu Qu Shu Zhang Shuang-Nan Zhang Shu-Mei Jia fang-Jun Lu Xiang Ma Lian Tao wei Zhang Li Chen Li-Ming Song Ti-Pei Li yu-Peng xu xue-Lei cao Yong Chen Cong-Zhan Liu Ce Cai zhi Chang Gang Chen Tian-Xiang Chen Yi-Bao Chen yu-Peng Chen wei Cui wei-wei Cui Jing-Kang Deng Yong-wei Dong yuan-yuan Du Min-xue Fu Guan-hua Gao He Gao Min Gao Ming-yu Ge yu-Dong Gu Ju Guan Cheng-Cheng Guo Da-wei Han Jia huo Lu-hua Jiang wei-Chun Jiang Jing Jin Yong-Jie Jin ling-Da Kong Bing Li Cheng-Kui Li Gang Li Mao-Shun Li wei Li Xian Li Xiao-Bo Li xu-fang Li Yang-Guo Li Zheng-wei Li Xiao-hua Liang Jing-yuan Liao Bai-sheng Liu Guo-Qing Liu Hong-wei Liu Xiao-Jing Liu Yi-Nong Liu Bo Lu xue-Feng Lu Qi Luo Tao Luo Bin Meng Yi Nang Jian-Yin Nie Ge Ou Na sai Ren-Cheng Shang Xin-ying Song Liang Sun ying Tan You-Li Tuo Chen Wang Guo-Feng Wang Juan Wang ling-Jun Wang weng-Shuai Wang yu-sa Wang Xiang-Yang wen Bai-Yang Wu Bo-Bing Wu Mei Wu Shuo Xiao Shao-Lin Xiong He xu Jia-wei Yang sheng Yang Yan-Ji Yang Yi-Jung Yang Qi-Bin Yi Qian-Qing Yin yuan You Ai-Mei Zhang Cheng-Mo Zhang Fan Zhang Hong-Mei Zhang Juan Zhang Tong Zhang Wan-Chang Zhang wen-Zhao Zhang Yi Zhang Yi-Fei Zhang Yong-Jie Zhang yuan-Hang Zhang yue Zhang Zhao Zhang zhi Zhang Zi-Liang Zhang Hai-sheng Zhao Xiao-Fan Zhao Shi-Jie Zheng Yao-Guang Zheng Deng-Ke Zhou Jian-Feng Zhou yu-xuan Zhu Ren-Lin Zhuang yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

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