共查询到11条相似文献,搜索用时 15 毫秒
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Yan-Zhuo Yang Shuo Ding Xin-Yuan Liu Chunhui Xu Feng Sun Bao-Cai Tan 《植物学报(英文版)》2023,65(11):2456-2468
RNA helicases participate in nearly all aspects of RNA metabolism by rearranging RNAs or RNA–protein complexes in an adenosine triphosphatedependent manner. Due to the large RNA helicase families in plants, the precise roles of many RNA helicases in plant physiology and development remain to be clarified. Here, we show that mutations in maize(Zea mays) DEAD-box RNA helicase48(Zm RH48) impair the splicing of mitochondrial introns, mitochondrial complex biosynthesis,and seed development. Loss of Z... 相似文献
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Emp10 encodes a mitochondrial PPR protein that affects the cis‐splicing of nad2 intron 1 and seed development in maize 下载免费PDF全文
Manjun Cai Shuzhen Li Feng Sun Qin Sun Hailiang Zhao Xuemei Ren Yanxin Zhao Bao‐Cai Tan Zuxin Zhang Fazhan Qiu 《The Plant journal : for cell and molecular biology》2017,91(1):132-144
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Empty pericarp7 encodes a mitochondrial E–subgroup pentatricopeptide repeat protein that is required for ccmFN editing,mitochondrial function and seed development in maize 下载免费PDF全文
Feng Sun Xiaomin Wang Géraldine Bonnard Yun Shen Zhihui Xiu Xiaojie Li Dahai Gao Zhonghang Zhang Bao‐Cai Tan 《The Plant journal : for cell and molecular biology》2015,84(2):283-295
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The pentatricopeptide repeat protein EMPTY PERICARP8 is required for the splicing of three mitochondrial introns and seed development in maize 下载免费PDF全文
Feng Sun Xiaoyan Zhang Yun Shen Hongchun Wang Rui Liu Xiaomin Wang Dahai Gao Yan‐Zhuo Yang Yiwei Liu Bao‐Cai Tan 《The Plant journal : for cell and molecular biology》2018,95(5):919-932
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Chunhui Xu Yun Shen Cuiling Li Fan Lu Meng-Di Zhang Robert B. Meeley Donald R. McCarty Bao-Cai Tan 《The Plant journal : for cell and molecular biology》2021,106(1):214-227
Ribosome assembly factors guide the complex process by which ribosomal proteins and the ribosomal RNAs form a functional ribosome. However, the assembly of plant plastid ribosomes is poorly understood. In the present study, we discovered a maize (Zea mays) plastid ribosome assembly factor based on our characterization of the embryo defective 15 (emb15) mutant. Loss of function of Emb15 retards embryo development at an early stage, but does not substantially affect the endosperm, and causes an albino phenotype in other genetic backgrounds. EMB15 localizes to plastids and possesses a ribosome maturation factor M (RimM) domain in the N-terminus and a predicted UDP-GlcNAc pyrophosphorylase domain in the C-terminus. The EMB15 RimM domain originated in bacteria and the UDP-GlcNAc pyrophosphorylase domain originated in fungi; these two domains came together in the ancestor of land plants during evolution. The N-terminus of EMB15 complemented the growth defect of an Escherichia coli strain with a RimM deletion and rescued the albino phenotype of emb15 homozygous mutants. The RimM domain mediates the interaction between EMB15 and the plastid ribosomal protein PRPS19. Plastid 16S rRNA maturation is also significantly impaired in emb15. These observations suggest that EMB15 functions in maize seed development as a plastid ribosome assembly factor, and the C-terminal domain is not important under normal conditions. 相似文献
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Ethylene‐dependent aerenchyma formation in adventitious roots is regulated differently in rice and maize 下载免费PDF全文
Takaki Yamauchi Akihiro Tanaka Hitoshi Mori Itsuro Takamure Kiyoaki Kato Mikio Nakazono 《Plant, cell & environment》2016,39(10):2145-2157
In roots of gramineous plants, lysigenous aerenchyma is created by the death and lysis of cortical cells. Rice (Oryza sativa) constitutively forms aerenchyma under aerobic conditions, and its formation is further induced under oxygen‐deficient conditions. However, maize (Zea mays) develops aerenchyma only under oxygen‐deficient conditions. Ethylene is involved in lysigenous aerenchyma formation. Here, we investigated how ethylene‐dependent aerenchyma formation is differently regulated between rice and maize. For this purpose, in rice, we used the reduced culm number1 (rcn1) mutant, in which ethylene biosynthesis is suppressed. Ethylene is converted from 1‐aminocyclopropane‐1‐carboxylic acid (ACC) by the action of ACC oxidase (ACO). We found that OsACO5 was highly expressed in the wild type, but not in rcn1, under aerobic conditions, suggesting that OsACO5 contributes to aerenchyma formation in aerated rice roots. By contrast, the ACO genes in maize roots were weakly expressed under aerobic conditions, and thus ACC treatment did not effectively induce ethylene production or aerenchyma formation, unlike in rice. Aerenchyma formation in rice roots after the initiation of oxygen‐deficient conditions was faster and greater than that in maize. These results suggest that the difference in aerenchyma formation in rice and maize is due to their different mechanisms for regulating ethylene biosynthesis. 相似文献