Strigolactones(SLs)are a new type of plant endogenous hormones that have been found to regulate plant growth and architecture.At present,some genes related to the biosynthesis and signaling pathway of SLs have been is...Strigolactones(SLs)are a new type of plant endogenous hormones that have been found to regulate plant growth and architecture.At present,some genes related to the biosynthesis and signaling pathway of SLs have been isolated in plants such as Arabidopsis thaliana,Pisum sativum and Oryza sativa.However,the signaling pathway and specific mechanism of SLs in cotton remain unclear.In this study,we identified the SLs signaling gene GhMAX2 and demonstrated its function in plant growth and architecture in Gossypium hirsutum.Bioinformatics analysis showed that GhMAX2 mainly consists of anα-helix and a random coil and includes a large number of leucine-rich repeats.GhMAX2 was highly expressed in root,stem,flower,and fibers at 20 days post-anthesis(DPA).GhMAX2 promoter-drivenβ-glucuronidase expression was present exclusively in the root,main inflorescence,flower,and silique.Subcellular localization showed that GhMAX2 is targeted to the nucleus.Heterologously expressed GhMAX2 can rescue the phenotype of Arabidopsis max2-1 mutant,indicating that the function of MAX2 is highly conserved between G.hirsutum and A.thaliana species.In addition,the knockdown expression of GhMAX2 in cotton resulted in significantly reduced plant height,slow growth,short internodes,and reduced fiber length.These findings indicate that GhMAX2 probably contributes to plant growth,architecture and fiber elongation in cotton.The study reveals insights into the roles of GhMAX2-mediated SL/KAR signaling in cotton and provides a valuable foundation for the cultivation of cotton plants in the future.展开更多
虽然一部手机即可阅读众多文章,但热爱书籍的人们并不满足于手机、平板的阅读质感,也是这一点成了电纸书的突破口,成功热销的重要元素。继BOOX Max carte以超吸睛的13.3寸屏幕面世数月后,文石乘胜追击推出BOOX Max2,本期《消费电子》评...虽然一部手机即可阅读众多文章,但热爱书籍的人们并不满足于手机、平板的阅读质感,也是这一点成了电纸书的突破口,成功热销的重要元素。继BOOX Max carte以超吸睛的13.3寸屏幕面世数月后,文石乘胜追击推出BOOX Max2,本期《消费电子》评测室迎来了这一款比杂志还大的电子书,接下来让我们看看它读起来究竟如何？展开更多
虽然采用800MHz处理器外频的P4芯片组即将推出,但由于i845PE芯片组的售价会较低,因而还会有其市场价值。Abit日前推出的采用i845PE芯片组的Max2 Pro 2.0主板,便是反映了这一情况。从板上的设计可见,它并不是主攻主流主板市场,因主板上...虽然采用800MHz处理器外频的P4芯片组即将推出,但由于i845PE芯片组的售价会较低,因而还会有其市场价值。Abit日前推出的采用i845PE芯片组的Max2 Pro 2.0主板,便是反映了这一情况。从板上的设计可见,它并不是主攻主流主板市场,因主板上拥有多项配备,较适合高端用户使用。不过亦因于板上有太多配备,所以使主板本身的扩充能力较低,由于板上只提供了1条AGP与4条PCI插槽,但其实已经够用,看了以下的主板装备介绍就会明白。展开更多
1998年5月,瑞典爱立信、芬兰诺基亚、日本东芝、美国 IBM 和英特尔公司五家著名厂商,在联合开展短程无线通信技术的标准化活动时提出了蓝牙技术。不过在当时,这种技术并没有赢得广泛的关注,直到1999年下半年,著名的业界巨头微软、摩托...1998年5月,瑞典爱立信、芬兰诺基亚、日本东芝、美国 IBM 和英特尔公司五家著名厂商,在联合开展短程无线通信技术的标准化活动时提出了蓝牙技术。不过在当时,这种技术并没有赢得广泛的关注,直到1999年下半年,著名的业界巨头微软、摩托罗拉、3Com、朗讯与蓝牙特别小组 Bluetooth SIG 5家公司共同发起成立了蓝牙技术推广组织,才真正在全球范围内掀起了一股蓝牙热潮。“蓝牙”名字本身与无线通信并没有根本的联系,它是来自英文“Bluetooth”的中文翻译(Bluetooth取自10世纪丹麦国王哈拉尔德的别名)。“蓝牙”展开更多
基金supported by the National Natural Science Foundation of China (32000146 and 31470295)the Natural Science Basic Research Program of Shaanxi, China (2018JZ3006, 2019JQ-062 and 2020JQ410)+3 种基金the Fundamental Research Funds for Central Universities, China (GK201901004 and GK202103063 and GK202002005)the China Postdoctoral Science Foundation (2020T130394)the Young Elite Scientists Sponsorship Program by China Association for Science and Technology (2019-2021QNRC001)the State Key Laboratory of Cotton Biology Open Fund, China (CB2020A12)
文摘Strigolactones(SLs)are a new type of plant endogenous hormones that have been found to regulate plant growth and architecture.At present,some genes related to the biosynthesis and signaling pathway of SLs have been isolated in plants such as Arabidopsis thaliana,Pisum sativum and Oryza sativa.However,the signaling pathway and specific mechanism of SLs in cotton remain unclear.In this study,we identified the SLs signaling gene GhMAX2 and demonstrated its function in plant growth and architecture in Gossypium hirsutum.Bioinformatics analysis showed that GhMAX2 mainly consists of anα-helix and a random coil and includes a large number of leucine-rich repeats.GhMAX2 was highly expressed in root,stem,flower,and fibers at 20 days post-anthesis(DPA).GhMAX2 promoter-drivenβ-glucuronidase expression was present exclusively in the root,main inflorescence,flower,and silique.Subcellular localization showed that GhMAX2 is targeted to the nucleus.Heterologously expressed GhMAX2 can rescue the phenotype of Arabidopsis max2-1 mutant,indicating that the function of MAX2 is highly conserved between G.hirsutum and A.thaliana species.In addition,the knockdown expression of GhMAX2 in cotton resulted in significantly reduced plant height,slow growth,short internodes,and reduced fiber length.These findings indicate that GhMAX2 probably contributes to plant growth,architecture and fiber elongation in cotton.The study reveals insights into the roles of GhMAX2-mediated SL/KAR signaling in cotton and provides a valuable foundation for the cultivation of cotton plants in the future.
文摘虽然一部手机即可阅读众多文章,但热爱书籍的人们并不满足于手机、平板的阅读质感,也是这一点成了电纸书的突破口,成功热销的重要元素。继BOOX Max carte以超吸睛的13.3寸屏幕面世数月后,文石乘胜追击推出BOOX Max2,本期《消费电子》评测室迎来了这一款比杂志还大的电子书,接下来让我们看看它读起来究竟如何？
文摘虽然采用800MHz处理器外频的P4芯片组即将推出,但由于i845PE芯片组的售价会较低,因而还会有其市场价值。Abit日前推出的采用i845PE芯片组的Max2 Pro 2.0主板,便是反映了这一情况。从板上的设计可见,它并不是主攻主流主板市场,因主板上拥有多项配备,较适合高端用户使用。不过亦因于板上有太多配备,所以使主板本身的扩充能力较低,由于板上只提供了1条AGP与4条PCI插槽,但其实已经够用,看了以下的主板装备介绍就会明白。
文摘1998年5月,瑞典爱立信、芬兰诺基亚、日本东芝、美国 IBM 和英特尔公司五家著名厂商,在联合开展短程无线通信技术的标准化活动时提出了蓝牙技术。不过在当时,这种技术并没有赢得广泛的关注,直到1999年下半年,著名的业界巨头微软、摩托罗拉、3Com、朗讯与蓝牙特别小组 Bluetooth SIG 5家公司共同发起成立了蓝牙技术推广组织,才真正在全球范围内掀起了一股蓝牙热潮。“蓝牙”名字本身与无线通信并没有根本的联系,它是来自英文“Bluetooth”的中文翻译(Bluetooth取自10世纪丹麦国王哈拉尔德的别名)。“蓝牙”
