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    题名 作者 年代 出处 被引量
1基因工程改良棉花纤维品质研究进展显示文摘棉花作为世界上重要的经济作物,其纤维品质是衡量棉花品质的重要指标。优良的纤维品质是国内外棉花育种的主要目标之一,面临常规育种改良品质的瓶颈,通过转基因技术改良棉花纤维品质是棉花遗传育种致力研究的重要领域。介绍棉纤维发育相关分子机理研究、棉纤维品质改良功能基因的发掘以及利用基因工程技术改良棉花纤维品质的最新进展,并对今后的研究进行展望。李晓东 李波 范玲 2012生物技术通报2012,28,10:4
2Creation of two hyperactive variants of phytochrome B1 for attenuating shade avoidance syndrome in maize显示文摘Increasing the planting density of maize is an effective measure to improve its yield.However,plants under high planting density tend to trigger shade avoidance syndrome(SAS),reducing lodging resistance and ultimately yield drop.Phytochrome B(phyB)plays a dominant role in mediating shade avoidance response.This study constructed two hyperactive mutated alleles of maize PHYB1:ZmPHYB1^(Y98F)(mimicking Y104F of AtPHYB)and ZmPHYB1^(Y359F)(mimicking Y361F of AtPHYB).Ectopic expression of ZmPHYB1^(Y98F) and ZmPHYB1^(Y359F) under the control of the ZmPHYB1 promoter in the Arabidopsis phyB-9 background rendered enhanced activity on complementing the phyB-9 related phenotypes compared with ZmPHYB1^(WT).Moreover,similar to the behavior of ZmPHYB1^(WT),ZmPHYB1Y98F and ZmPHYB1^(Y359F) proteins are localized to the nucleus after red light exposure,and could interact with PIF proteins of maize.In addition,expression of ZmPHYB1^(Y98F) and ZmPHYB1^(Y359F) variants under the control of the native ZmPHYB1 promoter attenuated SAS of maize seedlings subjected to simulated shade treatment.It effectively reduced mature maize’s plant height and ear height in field conditions.The results combined demonstrate the utility of ZmPHYB1^(Y98F) and ZmPHYB1^(Y359F) for attenuating SAS and breeding high density-tolerant varieties of maize.ZHAO Yong-ping ZHAO Bin-bin WU Guang-xia MA Xiao-jing WANG Bao-bao KONG De-xin WEI Hong-bin WANG Hai-yang 2022Journal of Integrative Agriculture2022,21,5:1
3芥菜cry2基因RNAi载体的构建与遗传转化研究显示文摘[目的]研究芥菜Cry2基因RNAi载体的构建与遗传转化,为后期对两者关系的进一步研究提供参考。[方法]在克隆芥菜类茎瘤芥Cry2基因的基础上,构建该基因的RNAi载体,并导入根瘤农杆菌GV3103,获得工程菌株后,通过农杆菌浸染茎瘤芥子叶外植体进行植物体转化,并验证转化结果。[结果]成功构建了茎瘤芥Cry2基因的RNAi载体,并建立了茎瘤芥遗传转化体系,获得了转基因植株。[结论]茎瘤芥Cry2 RNAi的构建及遗传转化体系的建立为后期深入研究茎瘤芥熟期相关基因的功能及基因工程应用奠定了基础。梁婷 刘毅 蔡应繁 孙全 朱小燕 岳显可 江怀仲 何晓红 2012安徽农业科学2012,40,7:1
4A discussion on cotton transformation during the last decade (2010–2021);an update on present trends and future prospects显示文摘The introduction of genetically modified(GM)cotton in 1996 in the US and its worldwide spread later rejuvenated cotton production in many parts of the world.The evolution is continued since then and currently,the 3rd and fourth generation of same GM cotton is grown in many parts of the world.The GM cotton introduced in 1996 was simple Bt cotton that expressed a single Cry1Ac gene,the later generation carried multiple Cry genes along with the genes controlling herbicide tolerance.Current day GM cotton does not only give stable resistance against lepidopteran insects but also facilitates the farmers to spray broad-spectrum herbicides without harming the crop.The evolution of GM cotton is continued both on the basic and applied side and interventions have been introduced during the last decade.Earlier the cotton transformation was limited to Cocker strains which are getting possible in many other varieties,too.It is successful with both gene gun,and Agrobacterium and inplanta transformation has made it a routine activity.Apart from overexpression studies for various purposes including biotic,abiotic,and quality traits,RNAi and genome editing are explored vigorously.Through this review,we have tried to explore and discuss various interventions for improving transformation protocols,the applications of cotton transformation,and future strategies being developed to get maximum benefits from this technology during the last decade.QANDEEL‑E‑ARSH AZHAR Muhammad Tehseen ATIF Rana Muhammad ISRAR Mahwish KHAN Azeem Iqbal KHALID Shahzad RANA Iqrar Ahmad 2021Journal of Cotton Research2021,4,4:0
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