The DEAD-box RNA helicase AtRH7/PRH75 participates in pre-rRNA processing, plant development and cold tolerance in arabidopsis

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題名:	The DEAD-box RNA helicase AtRH7/PRH75 participates in pre-rRNA processing, plant development and cold tolerance in arabidopsis
作者:	葉靖輝;Huang, Chun-Kai;Shen, Yu-Lien;Huang, Li-Fen;Wu, Shaw-Jye;Yeh, Chin-Hui;Lu, Chung-An
貢獻者:	生醫理工學院生命科學系
關鍵詞:	Arabidopsis;Arabidopsis - enzymology;Arabidopsis - genetics;Arabidopsis - growth & development;Arabidopsis - physiology;Arabidopsis Proteins - genetics;Arabidopsis Proteins - metabolism;Cell Division;Cold Temperature;DEAD-box RNA Helicases - genetics;DEAD-box RNA Helicases - metabolism;Gene Expression Regulation, Plant;Phenotype;Plant Leaves - enzymology;Plant Leaves - genetics;Plant Leaves - growth & development;Plant Leaves - physiology;Plant Roots - enzymology;Plant Roots - genetics;Plant Roots - growth & development;Plant Roots - physiology;Plant Stems - enzymology;Plant Stems - genetics;Plant Stems - growth & development;Plant Stems - physiology;RNA Precursors - genetics;RNA Splicing - genetics;RNA, Messenger - genetics;Seedlings - enzymology;Seedlings - genetics;Seedlings - growth & development;Seedlings - physiology;Stress, Physiological
日期:	2016-01-01
上傳時間:	2026-04-23 11:14:03 (UTC+8)
出版者:	Oxford University Press;Japan: Oxford University Press (OUP)
摘要:	摘要： DEAD-box RNA helicases belong to an RNA helicase family that plays specific roles in various RNA metabolism processes, including ribosome biogenesis, mRNA splicing, RNA export, mRNA translation and RNA decay. This study investigated a DEAD-box RNA helicase, AtRH7/PRH75, in Arabidopsis. Expression of AtRH7/PRH75 was ubiquitous; however, the levels of mRNA accumulation were increased in cell division regions and were induced by cold stress. The phenotypes of two allelic AtRH7/PRH75-knockout mutants, atrh7-2 and atrh7-3, resembled auxin-related developmental defects that were exhibited in several ribosomal protein mutants, and were more severe under cold stress. Northern blot and circular reverse transcription-PCR (RT-PCR) analyses indicated that unprocessed 18S pre-rRNAs accumulated in the atrh7 mutants. The atrh7 mutants were hyposensitive to the antibiotic streptomycin, which targets ribosomal small subunits, suggesting that AtRH7 was also involved in ribosome assembly. In addition, the atrh7-2 and atrh7-3 mutants displayed cold hypersensitivity and decreased expression of CBF1, CBF2 and CBF3, which might be responsible for the cold intolerance. The present study indicated that AtRH7 participates in rRNA biogenesis and is also involved in plant development and cold tolerance in Arabidopsis. 其他題名： Plant Cell Physiol 出版者： Japan: Oxford University Press (OUP) 出版日期： 2016-01-01 出處： Plant and Cell Physiology, 2016-01, Vol.57 (1), p.174-191 版權： The Author 2015. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For permissions, please email: journals.permissionsoup.com. 識別號： ISSN: 0032-0781 識別號： ISSN: 1471-9053 識別號： EISSN: 1471-9053 識別號： DOI: 10.1093/pcp/pcv188 識別號： PMID: 26637537
顯示於類別:	[生命科學系] 期刊論文

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