DELLA基因家族参与植物激素信号转导通路的调控,其中GAI(GA insensitive)mRNA还是植物体内长距离运输的信号分子。在全基因组范围内鉴定甘蓝(Brassica oleracea var. capitata) DELLA基因家族成员并分析mRNA运输特性,可为甘蓝DELLA基因...DELLA基因家族参与植物激素信号转导通路的调控,其中GAI(GA insensitive)mRNA还是植物体内长距离运输的信号分子。在全基因组范围内鉴定甘蓝(Brassica oleracea var. capitata) DELLA基因家族成员并分析mRNA运输特性,可为甘蓝DELLA基因家族的开发应用提供基础数据。本研究利用甘蓝基因组数据和转录组数据,在甘蓝中鉴定了5个DELLA基因家族成员(BoRGA1、BoRGA2、BoRGL1、BoRGL2和BoRGL3),但甘蓝基因组缺失了GAI基因。采用劈接法将甘蓝(自交系G27)接穗和菜心(Brassica campestris L. ssp. chinensis var.utilis Tsen et Lee)(四九菜心)砧木嫁接在一起,构建异源嫁接体。对砧木菜心花序轴和对应位置的实生苗菜心花序轴(对照)取样进行转录组测序。在甘蓝/菜心异源嫁接体的砧木菜心花序轴的转录组测序文库中分别鉴定到8、9、3、5、1个来自甘蓝BoRGA1、BoRGA2、BoRGL1、BoRGL2和BoRGL3的外源read。甘蓝DELLA家族基因mRNA运输并没有提高砧木菜心中DELLA家族基因的转录表达水平。相关性分析显示,甘蓝DELLA家族基因mRNA运输效率与其自身的序列和接穗甘蓝中的DELLA家族基因的转录表达水平相关。本研究为深入探究甘蓝DELLA家族基因mRNA运输的分子机制奠定了基础。展开更多
Random phase masks play a key role in optical image encryption schemes based on double random phase technique. In this paper, a mixed chaotic method is proposed, which can efficiently solve some weaknesses that one-di...Random phase masks play a key role in optical image encryption schemes based on double random phase technique. In this paper, a mixed chaotic method is proposed, which can efficiently solve some weaknesses that one-dimensional(1-D) single chaotic maps encounter to generate random phase masks. Based on the chaotic random phase masks, optical image encryption and decryption are realized with a single-shot digital holographic technique. In the proposed encryption scheme, the initial value and parameters of mixed chaotic maps serve as secret keys,which is convenient for the key management and transmission. Moreover, it also possesses high resistance against statistical attack, brute-force attack, noise attack and shear attack. Simulation results and security analysis verify the validity and security of the proposed encryption scheme.展开更多
文摘DELLA基因家族参与植物激素信号转导通路的调控,其中GAI(GA insensitive)mRNA还是植物体内长距离运输的信号分子。在全基因组范围内鉴定甘蓝(Brassica oleracea var. capitata) DELLA基因家族成员并分析mRNA运输特性,可为甘蓝DELLA基因家族的开发应用提供基础数据。本研究利用甘蓝基因组数据和转录组数据,在甘蓝中鉴定了5个DELLA基因家族成员(BoRGA1、BoRGA2、BoRGL1、BoRGL2和BoRGL3),但甘蓝基因组缺失了GAI基因。采用劈接法将甘蓝(自交系G27)接穗和菜心(Brassica campestris L. ssp. chinensis var.utilis Tsen et Lee)(四九菜心)砧木嫁接在一起,构建异源嫁接体。对砧木菜心花序轴和对应位置的实生苗菜心花序轴(对照)取样进行转录组测序。在甘蓝/菜心异源嫁接体的砧木菜心花序轴的转录组测序文库中分别鉴定到8、9、3、5、1个来自甘蓝BoRGA1、BoRGA2、BoRGL1、BoRGL2和BoRGL3的外源read。甘蓝DELLA家族基因mRNA运输并没有提高砧木菜心中DELLA家族基因的转录表达水平。相关性分析显示,甘蓝DELLA家族基因mRNA运输效率与其自身的序列和接穗甘蓝中的DELLA家族基因的转录表达水平相关。本研究为深入探究甘蓝DELLA家族基因mRNA运输的分子机制奠定了基础。
基金supported by the National Natural Science Foundation of China (Nos. 61177007 and 11472070)
文摘Random phase masks play a key role in optical image encryption schemes based on double random phase technique. In this paper, a mixed chaotic method is proposed, which can efficiently solve some weaknesses that one-dimensional(1-D) single chaotic maps encounter to generate random phase masks. Based on the chaotic random phase masks, optical image encryption and decryption are realized with a single-shot digital holographic technique. In the proposed encryption scheme, the initial value and parameters of mixed chaotic maps serve as secret keys,which is convenient for the key management and transmission. Moreover, it also possesses high resistance against statistical attack, brute-force attack, noise attack and shear attack. Simulation results and security analysis verify the validity and security of the proposed encryption scheme.
