J Integr Plant Biol

Arabidopsis SMALL ORGAN 4, a homolog of yeast NOP53, regulates cell proliferation rate during organ growth

Xiao-Ran Zhang, Zhixiang Qin, Xiao Zhang, and Yuxin Hu

2015, 57(10): 810-818. doi:10.1111/jipb.12424

摘要 ( 1911 )

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Cell division is a fundamental cellular event that contributes to the overall organ size in plants. How cell division progression is strictly regulated remains largely elusive during plant organogenesis. Here, the Arabidopsis SMO4, a homologue of yeast NOP53, is shown to regulate cell division progression and thus the final organ size.

The alteration in the architecture of a T-DNA insertion rice mutant osmtd1 is caused by up-regulation of MicroRNA156f

Qing Liu, Gezhi Shen, Keqin Peng, Zhigang Huang, Jianhua Tong, Mohammed Humayun Kabir, Jianhui Wang, Jingzhe Zhang, Genji Qin, and Langtao Xiao

2015, 57(10): 819-829. doi:10.1111/jipb.12340

摘要 ( 2666 )

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Plant architecture is a key factor affecting crop production. A rice T-DNA insertion mutant Osmtd1 displayed multi-tillering and dwarf phenotypes. Os08g34258 gene encoding an unknown protease inhibitor I family protein was knocked down whereas OsmiR156f was significantly up-regulated in Osmtd1 mutant. Our results suggested that OsMTD1 might regulate plant architecture by controlling OsmiR156f in rice.

Glucose alleviates cadmium toxicity by increasing cadmium fixation in root cell wall and sequestration into vacuole in Arabidopsis

Yuan-Zhi Shi, Xiao-Fang Zhu, Jiang-Xue Wan, Gui-Xin Li, and Shao-Jian Zheng

2015, 57(10): 830-837. doi:10.1111/jipb.12312

摘要 ( 2089 )

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Glucose applied exogenously can increase Cd fixation in the root cell wall and sequestration into the vacuoles. As a result, less Cd was translocated to the shoot, thus alleviating the Cd-induced leaf chlorosis in Arabidopsis.

ThERF1 regulates its target genes via binding to a novel cis-acting element in response to salt stress

Liuqiang Wang, Chao Wang, Liping Qin, Wenjin Liu, and Yucheng Wang

2015, 57(10): 838-847. doi:10.1111/jipb.12335

摘要 ( 2141 )

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We identified that ethylene responsive factor (ERF) can bind to a novel DNA sequence (TTG motif). Most of the ERF regulated genes contain TTG motif rather than GCC-box and DRE motifs in their promoters, suggesting that TTG motif plays an important role in the gene expression regulated by ERFs.

An eukaryotic translation initiation factor, AteIF5A-2, affects cadmium accumulation and sensitivity in Arabidopsis

Xiao-Yan Xu, Zhong-Jie Ding, Lei Chen, Jin-Ying Yan, Gui-Xin Li, and Shao-Jian Zheng

2015, 57(10): 848-858. doi:10.1111/jipb.12329

摘要 ( 1851 )

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Mutation of a eukaryotic translation initiation factor AteIF5A-2 increases Cd uptake and accumulation, and decreases Cd detoxification by regulating the expression of metal transporters and ROS metabolism, thus results in the increase of Cd sensitivity in Arabidopsis.

Reproductive isolation between sympatric sister species, Mussaenda kwangtungensis and M. pubescens var. alba

Zhonglai Luo, Tingting Duan, Shuai Yuan, Shi Chen, Xiufeng Bai, and Dianxiang Zhang

2015, 57(10): 859-870. doi:10.1111/jipb.12325

摘要 ( 2307 )

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Reproductive isolation plays a key role in the formation and maintenance of species. Between the sympatric sister species Mussaenda kwangtungensis and M. pubescens var. alba, principal pollinators differed strikingly, strongly supporting the hypothesis that pre-zygotic isolation plays an important part in limiting gene exchange for species with a closer phylogenetic relationship.

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