| 3 | Comparing mineral weathering and elemental transport between earth's critical zone with different parent rocks in Yanshan Mountain,Hebei province,China显示文摘Bedrock weathering performs a significant influence on the evolution of Earth’s critical zone.Carbonate rock(dolostone),metamorphic rock(gneiss),and sedimentary rock(sandstone)geological formations in Yanshan Mountain,Hebei Province,are taken as objects to probe the controlling of geological formations on weathering characteristics,migration,and enrichment of elements as well as structure of Earth’s critical zone under the identical climate conditions through geological field survey,analysis on minerals component,element distribution in the weathering profile.The dolostone geological formation(DGF)is lithologically dominated by dolostone,characterized by the strongest and predominant chemical weathering.During bedrock weathering and pedogenesis,DGF is marked by significant depletion of CaO,Mg O,S,Mn,Mo and enrichment of N,K,Fe_(2)O_(3),and Zn with concentrations of P,Cu,and B keeping stable.Shortage of soil-forming materials and significant loss are driven by soil erosion,which results in thin regolith and soil.The soil thickness is less than 10 cm,and the regolith thickness is less than 30 cm.The vegetation community is predominantly rock arbor or brush,which is calcivorous and tolerant of barrenness.Plagiogneiss is a dominant rock type of gneiss geological formation(GGF),characterized by the weakest weathering and fast chemical and physical weathering rate.GGF is masked by significant depletion of P,K,CaO,MgO,Fe_(2)O_(3),Mn,Cu and enrichment of N,S,Mo,and B,with contents of Zn keeping stable.Both soil and regolith developed in GGF are relatively thick for one of the reasons that biotite expands during weathering.The soil thickness is more than 50 cm,and the regolith thickness ranges from 100 to 200 cm.The vegetation community is predominantly high-quality economic forests and various arbors because of the enrichment of nutrients in GGF.Sandstone is primarily a rock type of sandstone geological formation(SGF),characterized by moderate weathering degree and slow chemical weathering rate.SGF is marked by significant depletion of P,K,CaO,MgO,Fe_(2)O_(3),and enrichment of N,S,Mn,Cu,Zn,and Mo,with fluctuant changes of Zn and B.The thickness of soil developed in SGF varies between that of DGF and GGF.The soil thickness ranges from 30 to 50 cm,and the regolith thickness ranges from 50 to 100 cm.Chinese pines are widely spread on the shady slopes of SGF.Research provides theoretical support for screening dominant ecological resource areas,ecological industry development and ecological protection and restoration for Yanshan Mountain,Hebei Province. | Zijian Sun Zhen Liao Wei Shen Daqing Fu Xiaofeng Wei Huiqiong Zhang Ziran Chen Lianghui Xiong Tianhao An Hao Wei | 2022 | Acta Geochimica2022，41，6： | 0 |
| 4 | GP30 of the mycobacteriophage CASbig impairs mycobacterial adaptation during acidic stress and in macrophages显示文摘The rapid emergence of multidrug-resistant and extensively drug-resistant Tuberculosis retrieved intense interest in phage-based therapy.This old approach,which was abandoned in the west in the 1940s but is generating renewed interest,has stimulated fresh research on mycobacteriophages and their lytic efficiency against their hosts.GP30 is a novel protein of the mycobacteriophage CASbig with undiscovered function.In this study,we analyzed the role of CASbig gp30 in the host Mycobacterium smegmatis.Overexpression of gp30 in the host led to reduced growth in acidic medium and attenuated the intracellular survival rate of M.smegmatis inside the THP-1 macrophages,which may be linked to the altered lipid profile of the recombinant bacterial cell wall.In a word,this study suggested that gp30,a novel gene from a mycobacteriophage,modulated lipid composition and content to hamper the survivability of bacteria under stress conditions. | WU LI JIANGZHE SI SHUAI QIU JING LUO HUIQIONG SUN XIAOQING LI ZHIBIN WAN WEI GAO HANLU ZOU LEI ZHANG XIAOHONG XIANG YANZHANG LI TIESHAN TENG | 2020 | BIOCELL2020，44，4： | 0 |
| 5 | Comparative physiological and transcriptomic analyses illuminate common mechanisms by which silicon alleviates cadmium and arsenic toxicity in rice seedlings显示文摘The inessential heavy metal/loids cadmium(Cd)and arsenic(As),which often co-occur in polluted paddy soils,are toxic to rice.Silicon(Si)treatment is known to reduce Cd and As toxicity in rice plants.To better understand the shared mechanisms by which Si alleviates Cd and As stress,rice seedlings were hydroponically exposed to Cd or As,then treated with Si.The addition of Si significantly ameliorated the inhibitory effects of Cd and As on rice seedling growth.Si supplementation decreased Cd and As translocation from roots to shoots,and significantly reduced Cd-and As-induced reactive oxygen species generation in rice seedlings.Transcriptomics analyses were conducted to elucidate molecular mechanisms underlying the Si-mediated response to Cd or As stress in rice.The expression patterns of the differentially expressed genes in Cd-or As-stressed rice roots with and without Si application were compared.The transcriptomes of the Cd-and As-stressed rice roots were similarly and profoundly reshaped by Si application,suggesting that Si may play a fundamental,active role in plant defense against heavy metal/loid stresses by modulating whole genome expression.We also identified two novel genes,0s01g0524500 and 0s06g0514800,encoding a myeloblastosis(MYB)transcription factor and a thionin,respectively,which may be candidate targets for Si to alleviate Cd and As stress in rice,as well as for the generation of Cd-and/or As-resistant plants.This study provides valuable resources for further clarification of the shared molecular mechanisms underlying the Si-mediated alleviation of Cd and As toxicity in rice. | Huiqiong Chen Xiaoyu Liang Xiaomei Gong John R.Reinfelder Huamei Chen Chongjun Sun Xiulian Liu Shuchang Zhang Fangbai Li Chuanping Liu Junliang Zhao Jicai Yi | 2021 | Journal of Environmental Sciences2021，33，11： | 0 |
| 6 | Space Life Science of China显示文摘With the human space exploration activities, space life science is an emerging interdiscipline,which covers a wide range of researches. Based on our country's manned space station and recoverable satellite science experimental platform, the development of space life science research is very important to acquire new knowledge or new technological innovation, to give further services to the human space exploration activities,to improve the national economic and social development. Both ground-based and flight applied studies were continuously performed in the previous 2 years. Here, we review and summarize the researches on space life sciences contributed by Chinese scientists. | MA Hong REN Hao LI Xiaoqiong YANG Chunhua CHEN Yu WANG Rui YING Zhang WANG Changyong ZHOU Jin LI Hong JIANG Xiaoxia ZHANG Fengzhi HAO Tong ZHU Huimin DONG Xiaohui ZHENG Huiqiong WANG Lihua SUN Weining TONG Guanghui ZHENG Weibo ZHANG Tao LONG Mian LIU Hong ZHUANG Fengyuan DENG Yulin | 2018 | 空间科学学报2018，38，5： | 0 |
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