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Zheng Yang Zhang Qing Ali Ashaq Li Ke Shao Nan Zhou Xiaoli Ye Zhiqin Chen Xiaomin Cao Shanshan Cui Jing Zhou Juan Wang Dianbing Hou Baidong Li Min Cui Mengmeng Deng Lihua Sun Xinyi Zhang Qian Yang Qinfang li Yong Wang Hui Lei Yake Yu Bo Cheng Yegang Tong Xiaolin Men Dong Zhang Xian-En 《中国病毒学》2021,36(5):869-878
Virologica Sinica - Understanding the persistence of antibody in convalescent COVID-19 patients may help to answer the current major concerns such as the risk of reinfection, the protection period... 相似文献
164.
Zhijie Ren Fenglin Bai Jingwen Xu Li Wang Xiaohan Wang Qian Zhang Changxin Feng Qi Niu Liying Zhang Jiali Song Fang Bao Liangyu Liu Yikun He Ligeng Ma Wang Tian Congcong Hou Legong Li 《植物学报(英文版)》2021,63(12):2150-2150
Grain size is determined by the size and number of cells in the grain. The regulation of grain size is crucial for improving crop yield; however, the genes and molecular mechanisms that control grain size remain elusive. Here, we report that a member of the detoxification efflux carrier /Multidrug and Toxic Compound Extrusion (DTX/MATE) family transporters, BIG RICE GRAIN 1 (BIRG1), negatively influences grain size in rice (Oryza sativa L.). BIRG1 is highly expressed in reproductive organs and roots. In birg1 grain, the outer parenchyma layer cells of spikelet hulls are larger than in wild-type (WT) grains, but the cell number is unaltered. When expressed in Xenopus laevis oocytes, BIRG1 exhibits chloride efflux activity. Consistent with this role of BIRG1, the birg1 mutant shows reduced tolerance to salt stress at a toxic chloride level. Moreover, grains from birg1 plants contain a higher level of chloride than those of WT plants when grown under normal paddy field conditions, and the roots of birg1 accumulate more chloride than those of WT under saline conditions. Collectively, the data suggest that BIRG1 in rice functions as a chloride efflux transporter that is involved in mediating grain size and salt tolerance by controlling chloride homeostasis. 相似文献
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Jinhua Xiao Xianqin Wei Yi Zhou Zhaozhe Xin Yunheng Miao Hongxia Hou Jiaxing Li Dan Zhao Jing Liu Rui Chen Liming Niu Guangchang Ma Wenquan Zhen Shunmin He Jianxia Wang Xunfan Wei Weihao Dou Zhuoxiao Sui Dawei Huang 《遗传学报》2021,48(3):225-236
Figs and fig pollinators are one of the few classic textbook examples of obligate pollination mutualism. The specific dependence of fig pollinators on the relatively safe living environment with sufficient food sources in the enclosed fig syconia implies that they are vulnerable to habitat changes. However, there is still no extensive genomic evidence to reveal the evolutionary footprint of this long-term mutually beneficial symbiosis in fig pollinators. In fig syconia, there are also non-pollinator species. The non-pollinator species differ in their evolutionary and life histories from pollinators. We conducted comparative analyses on 11 newly sequenced fig wasp genomes and one previously published genome. The pollinators colonized the figs approximately 66.9 million years ago, consistent with the origin of host figs. Compared with nonpollinators, many more genes in pollinators were subject to relaxed selection. Seven genes were absent in pollinators in response to environmental stress and immune activation. Pollinators had more streamlined gene repertoires in the innate immune system, chemosensory toolbox, and detoxification system. Our results provide genomic evidence for the differentiation between pollinators and nonpollinators. The data suggest that owing to the long-term adaptation to the fig, some genes related to functions no longer required are absent in pollinators. 相似文献
167.
Wang Chaojie Gong Yandong Wei Anbang Huang Tao Hou Siyuan Du Junjie Li Zongcheng Wang Junliang Liu Bing Lan Yu 《中国科学:生命科学英文版》2021,64(12):2073-2087
Science China Life Sciences - During embryogenesis, hematopoietic stem progenitor cells (HSPCs) are believed to be derived from hemogenic endothelial cells (HECs). Moreover, arterial feature is... 相似文献
168.
Feng-Hui Guo Xi-Liang Li Jing-Jing Yin Saheed Olaide Jimoh Xiang-Yang Hou 《Journal of Plant Ecology》2021,14(6):1024
放牧诱导的植物遗留效应可以通过较大的根系分配可塑性增强其干旱适应性
为探索植物的放牧遗留效应是否有利于天然草原生态系统应对干旱环境,我们采集了 内蒙古典型草原自由放牧和多年围封样地内的冰草(Agropyron cristatum)和黄囊苔草(Carex korshinskyi)幼苗 进行了温室控水试验。研究结果表明,干旱处理对自由放牧样地采集的冰草和黄囊苔草子株生物量、子株数量和总生物量的影响较小;自由放牧区的冰草与黄囊苔草较强的干旱适应性可部分由干旱处理下较大的根系分配可塑性来解释。本研究结果表明合理放牧是天然草原适应气候变化的潜在管理办法之一。 相似文献
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Cheng Chu Gang Xu Xiaocong Li Zuowei Duan Lihong Tao Hongxia Cai Ming Yang Xinjiang Zhang Bin Chen Yanyu Zheng Hongcan Shi Xiaoyu Li 《Journal of cellular and molecular medicine》2021,25(1):110-119
Shear stress was reported to regulate the expression of AC007362, but its underlying mechanisms remain to be explored. In this study, to isolate endothelial cells of blood vessels, unruptured and ruptured intracranial aneurysm (IA) tissues were collected from IA patients. Subsequently, quantitative real-time PCR (qRT-PCR), Western blot and luciferase assay were performed to investigate the relationships between AC007362, miRNAs-493 and monocyte chemoattractant protein-1 (MCP-1) in human umbilical vein endothelial cells (HUVECs) exposed to shear stress. Reduced representation bisulphite sequencing (RRBS) was performed to assess the level of DNA methylation in AC007362 promoter. Accordingly, AC007362 and MCP-1 were significantly up-regulated while miR-493 was significantly down-regulated in HUVECs exposed to shear stress. AC007362 could suppress the miR-493 expression and elevate the MCP-1 expression, and miR-493 was shown to respectively target AC007362 and MCP-1. Moreover, shear stress in HUVECs led to the down-regulated DNA methyltransferase 1 (DNMT1), as well as the decreased DNA methylation level of AC007362 promoter. Similar results were also observed in ruptured IA tissues when compared with unruptured IA tissues. In conclusion, this study presented a deep insight into the operation of the regulatory network of AC007362, miR-493 and MCP-1 upon shear stress. Under shear stress, the expression of AC007362 was enhanced by the inhibited promoter DNA methylation, while the expression of MCP-1 was enhanced by sponging the expression of miR-493. 相似文献