SHORT VEGETATIVE PHASE(SVP)是重要开花抑制基因,主要在营养阶段表达。SVP基因参与花分生组织的形成,并调节开花途径中的整合因子FLOWERING LOCUS T(FT)、SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1(SOC1)和FLOWERING LOCUS C(FLC)的...SHORT VEGETATIVE PHASE(SVP)是重要开花抑制基因,主要在营养阶段表达。SVP基因参与花分生组织的形成,并调节开花途径中的整合因子FLOWERING LOCUS T(FT)、SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1(SOC1)和FLOWERING LOCUS C(FLC)的表达,从而调控开花时间。SVP的表达受光照、温度等因素的影响。就国内外对SVP基因及同源基因的一些研究进展进行综述,并探讨其未来的研究方向。展开更多
SHORT VEGETATIVE PHASE(SVP)基因属于MADS盒基因,它编码的蛋白转录因子对开花具有抑制作用。SVP主要在营养生长阶段表达,受自主途径等多个开花路径调控,并可以调节开花途径整合子FLOWERING LOCUST(FT),SUPPRESSOR OF OVEREXPRESSION OF...SHORT VEGETATIVE PHASE(SVP)基因属于MADS盒基因,它编码的蛋白转录因子对开花具有抑制作用。SVP主要在营养生长阶段表达,受自主途径等多个开花路径调控,并可以调节开花途径整合子FLOWERING LOCUST(FT),SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1(SOC1)的表达,从而调控抽薹开花时间。本文综述了SVP基因调控抽薹开花的作用机制,并结合SVP基因的研究现状展望了未来的研究方向。展开更多
Sound velocity profile(SVP)data is indispensable in the multi-beam data processing.The sampling density is of great importance for SVP to represent the vertical variation of sound velocity accurately and guarantee the...Sound velocity profile(SVP)data is indispensable in the multi-beam data processing.The sampling density is of great importance for SVP to represent the vertical variation of sound velocity accurately and guarantee the accuracy of sound ray tracing(SRT).However,the SVP also affects the SRT efficiency significantly,especially in deep-sea multi-beam sounding data processing.To improve SRT efficiency and ensure SRT accuracy,an adaptive SVP simplification method based on area difference is proposed in this article.Firstly,the relationship between the area difference of the raw SVP and the simplified one and SRT bias is studied,and the relationship model of them is built.Then,by considering the constraint of SRT accuracy,the SVP simplification method and the simplifying SVP procedure SVP are given.Finally,a deep water experiment is conducted to verify the proposed method.Compared to the existing method,the proposed method improves the robustness,feasibility of SVP simplification as well as the accuracy and efficiency of SRT.展开更多
文摘SHORT VEGETATIVE PHASE(SVP)是重要开花抑制基因,主要在营养阶段表达。SVP基因参与花分生组织的形成,并调节开花途径中的整合因子FLOWERING LOCUS T(FT)、SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1(SOC1)和FLOWERING LOCUS C(FLC)的表达,从而调控开花时间。SVP的表达受光照、温度等因素的影响。就国内外对SVP基因及同源基因的一些研究进展进行综述,并探讨其未来的研究方向。
文摘SHORT VEGETATIVE PHASE(SVP)基因属于MADS盒基因,它编码的蛋白转录因子对开花具有抑制作用。SVP主要在营养生长阶段表达,受自主途径等多个开花路径调控,并可以调节开花途径整合子FLOWERING LOCUST(FT),SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1(SOC1)的表达,从而调控抽薹开花时间。本文综述了SVP基因调控抽薹开花的作用机制,并结合SVP基因的研究现状展望了未来的研究方向。
基金This Work Was Supported by the National Natural Sciences Foundation of China (No.30270644, 3021010392)the Natural Sciences Foundation of Huan Province of China (No.02JJY4026)the Foundation of the Department of Education in Hunan Province of China(No.02B017).
文摘Sound velocity profile(SVP)data is indispensable in the multi-beam data processing.The sampling density is of great importance for SVP to represent the vertical variation of sound velocity accurately and guarantee the accuracy of sound ray tracing(SRT).However,the SVP also affects the SRT efficiency significantly,especially in deep-sea multi-beam sounding data processing.To improve SRT efficiency and ensure SRT accuracy,an adaptive SVP simplification method based on area difference is proposed in this article.Firstly,the relationship between the area difference of the raw SVP and the simplified one and SRT bias is studied,and the relationship model of them is built.Then,by considering the constraint of SRT accuracy,the SVP simplification method and the simplifying SVP procedure SVP are given.Finally,a deep water experiment is conducted to verify the proposed method.Compared to the existing method,the proposed method improves the robustness,feasibility of SVP simplification as well as the accuracy and efficiency of SRT.
