共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
3.
4.
RNA regulation in plant abiotic stress responses 总被引:1,自引:0,他引:1
5.
6.
7.
8.
9.
Fengjuan Jia Bingjiang Wu Hui Li Jinguang Huang Chengchao Zheng 《Molecular genetics and genomics : MGG》2013,288(11):559-577
F-box-containing proteins, as the key components of the protein degradation machinery, are widely distributed in higher plants and are considered as one of the largest known families of regulatory proteins. The F-box protein family plays a crucial role in plant growth and development and in response to biotic and abiotic stresses. However, systematic analysis of the F-box family in maize (Zea mays) has not been reported yet. In this paper, we identified and characterised the maize F-box genes in a genome-wide scale, including phylogenetic analysis, chromosome distribution, gene structure, promoter analysis and gene expression profiles. A total of 359 F-box genes were identified and divided into 15 subgroups by phylogenetic analysis. The F-box domain was relatively conserved, whereas additional motifs outside the F-box domain may indicate the functional diversification of maize F-box genes. These genes were unevenly distributed in ten maize chromosomes, suggesting that they expanded in the maize genome because of tandem and segmental duplication events. The expression profiles suggested that the maize F-box genes had temporal and spatial expression patterns. Putative cis-acting regulatory DNA elements involved in abiotic stresses were observed in maize F-box gene promoters. The gene expression profiles under abiotic stresses also suggested that some genes participated in stress responsive pathways. Furthermore, ten genes were chosen for quantitative real-time PCR analysis under drought stress and the results were consistent with the microarray data. This study has produced a comparative genomics analysis of the maize ZmFBX gene family that can be used in further studies to uncover their roles in maize growth and development. 相似文献
10.
11.
The role of WRKY transcription factors in plant abiotic stresses 总被引:7,自引:0,他引:7
12.
13.
14.
MiR398 and plant stress responses 总被引:2,自引:0,他引:2
15.
16.
17.
18.
19.
逆境胁迫严重影响着全世界范围内的作物产量。为减少逆境胁迫损伤,植物在长期的进化过程中形成了多级别(转录、转录后和翻译、翻译后)的基因表达调控应答机制。最近研究发现,内源microRNA(miRNA)在植物逆境胁迫应答中具有重要的调节作用。在逆境胁迫发生时,一些miRNA会表达上调,而另一些miRNA会表达下调;miRNA正是通过下调胁迫应答过程的负调节子靶基因和上调胁迫应答过程中的正调节子靶基因,来执行生理调控功能。通过综述miRNA在植物逆境应答中的作用,以期全面的了解逆境胁迫调控网络。 相似文献