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951.
Bohong Su Haitao Wu Yong Guo Huawei Gao Zhongyan Wei Yuyang Zhao Lijuan Qiu 《International journal of molecular sciences》2022,23(15)
Soybean plant height and branching affect plant architecture and yield potential in soybean. In this study, the mutant dmbn was obtained by treating the cultivar Zhongpin 661 with ethylmethane sulfonate. The dmbn mutant plants were shorter and more branched than the wild type. The genetic analysis showed that the mutant trait was controlled by a semi-dominant gene. The candidate gene was fine-mapped to a 91 kb interval on Chromosome 9 by combining BSA-seq and linkage analysis. Sequence analysis revealed that Glyma.09g193000 encoding an Aux/IAA protein (GmIAA27) was mutated from C to T in the second exon of the coding region, resulting to amino acid substitution of proline to leucine. Overexpression of the mutant type of this gene in Arabidopsis thaliana inhibited apical dominance and promoted lateral branch development. Expression analysis of GmIAA27 and auxin response genes revealed that some GH3 genes were induced. GmIAA27 relies on auxin to interact with TIR1, whereas Gmiaa27 cannot interact with TIR1 owing to the mutation in the degron motif. Identification of this unique gene that controls soybean plant height and branch development provides a basis for investigating the mechanisms regulating soybean plant architecture development. 相似文献
952.
碳酸盐岩油藏深度酸压技术研究及应用 总被引:3,自引:1,他引:2
碳酸盐岩储层酸压改造的目的是沟通远端的储集体,提高酸压裂缝长度和酸液有效作用距离是提高酸压措施效果的关键。对裂缝相对不发育的致密储层,开展了以控制裂缝高度为主的深度酸压技术研究;对裂缝发育的储层,开展了前置液加粉陶段塞降滤、大规模前置液酸压等深度酸压工艺技术的研究,强化降滤和造缝能力,减小或消除多裂缝的影响,提高酸压穿透深度。以上各种深度酸压技术在碳酸盐岩裂缝油藏中取得了很好的应用效果。 相似文献
953.
大王北洼陷沙二段成藏模式探讨 总被引:1,自引:1,他引:0
根据3次资源评价结果,济阳坳陷车镇凹陷的石油总资源量为5.6x108,而实际探明资源量则不足1.5x108t,因此,车镇凹陷仍具有较大潜力.大王北洼陷是车镇凹陷的一个重要次洼,属于油气较为富集的构造带.通过对大王北洼陷带沙二段油藏构造、地层、沉积及成藏系统的分析,建立了大王北洼陷的层序地层格架,明确了层序Ⅱ是该区带沙二段的主力含油层序.提出大王北洼陷带沙二段油藏具有2套差异较大的成藏系统,即大65成藏系统和英雄滩复合成藏系统,阐述了大王北洼陷带控制沙二段油气的主要因素,揭示了该区带沙二段的成藏规律和成藏模式,指明了该区下一步的勘探工作方向. 相似文献
954.
通过对传统的下载过程进行分析和研究,提出一种新的Linux内核的自动下载方案。该方案采用有限状态机模型,自动控制Linux引导程序和内核的下载过程。经过编程实现和实际应用,该方案实现的下载工具能够快速、正确地对目标板进行下载Linux内核,提高了目标板下载的效率。 相似文献
955.
Lu-Yu Yan Jia-Gui Guo Xin Zhang Yang Liu Xin-Xin Xiong Yu-Xuan Han Li-Li Zhang Xiao-Hong Zhang Dong-Hong Min 《International journal of molecular sciences》2022,23(13)
The peptidase M24 (Metallopeptidase 24, M24) superfamily is essential for plant growth, stress response, and pathogen defense. At present, there are few systematic reports on the identification and classification of members of the peptidase M24 proteins superfamily in wheat. In this work, we identified 53 putative candidate TaM24 genes. According to the protein sequences characteristics, these members can be roughly divided into three subfamilies: I, II, III. Most TaM24 genes are complex with multiple exons, and the motifs are relatively conserved in each sub-group. Through chromosome mapping analysis, we found that the 53 genes were unevenly distributed on 19 wheat chromosomes (except 3A and 3D), of which 68% were in triads. Analysis of gene duplication events showed that 62% of TaM24 genes in wheat came from fragment duplication events, and there were no tandem duplication events to amplify genes. Analysis of the promoter sequences of TaM24 genes revealed that cis-acting elements were rich in response elements to drought, osmotic stress, ABA, and MeJA. We also studied the expression of TaM24 in wheat tissues at developmental stages and abiotic stress. Then we selected TaM24-9 as the target for further analysis. The results showed that TaM24-9 genes strengthened the drought and salt tolerance of plants. Overall, our analysis showed that members of the peptidase M24 genes may participate in the abiotic stress response and provided potential gene resources for improving wheat resistance. 相似文献
956.
Li Guo Lin Jia Lulu Luo Xinru Xu Yangyang Xiang Yujie Ren Dekang Ren Lulu Shen Tingming Liang 《International journal of molecular sciences》2022,23(13)
Circular RNAs (circRNAs), a class of new endogenous non-coding RNAs (ncRNAs), are closely related to the carcinogenic process and play a critical role in tumor metastasis. CircRNAs can lay the foundation for tumor metastasis via promoting tumor angiogenesis, make tumor cells gain the ability of migration and invasion by regulating epithelial-mesenchymal transition (EMT), interact with immune cells, cytokines, chemokines, and other non-cellular components in the tumor microenvironment, damage the normal immune function or escape the immunosuppressive network, and further promote cell survival and metastasis. Herein, based on the characteristics and biological functions of circRNA, we elaborated on the effect of circRNA via circRNA-associated competing endogenous RNA (ceRNA) network by acting as miRNA/isomiR sponges on tumor angiogenesis, cancer cell migration and invasion, and interaction with the tumor microenvironment (TME), then explored the potential interactions across different RNAs, and finally discussed the potential clinical value and application as a promising biomarker. These results provide a theoretical basis for the further application of metastasis-related circRNAs in cancer treatment. In summary, we briefly summarize the diverse roles of a circRNA-associated ceRNA network in cancer metastasis and the potential clinical application, especially the interaction of circRNA and miRNA/isomiR, which may complicate the RNA regulatory network and which will contribute to a novel insight into circRNA in the future. 相似文献
957.
958.
对超宽带(Uhra—wideband,UWB)通信与共存通信系统的互干扰进行了研究,提出了一种新的缓解两者互干扰的方法——自适应多带脉冲调制方法。该方法采用自适应频谱估计,给出与UWB共存的通信系统的中心频率与带宽参数,基于谱估计的参数,自适应地将UWB发射脉冲进行分解,并降低UWB分解脉冲中与共存通信系统发生频谱碰撞的子带脉冲的功率,从而有效地缓解了UWB对共存通信系统的干扰。UWB接收机则采用与发送端相应的相关掩模进行信号的相关接收,从而也显著地降低了共存通信系统对UWB的干扰。仿真结果表明,该方法对缓解UWB与随机共存通信系统的互干扰行之有效。 相似文献
959.
Shi-Kai Shen Xin-Lei Cui Chuan-Yu Guo Xin Dong Xian-Fa Zhang Xiao-Li Cheng Li-Hua Huo Ying-Ming Xu 《稀有金属(英文版)》2021,(6):1545-1553
Sensing mechanism is still a big problem in the field of gas sensor.In-depth study of the sensing mecha-nism can provide better ideas for the design of sensing ... 相似文献
960.