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植物针对转座子活性的替代性宿主防御发生在翻译后阶段。

Alternative plant host defense against transposon activities occurs at the post-translational stage.

作者信息

Zhou Hua, Kishima Yuji

机构信息

a Laboratory of Plant Breeding, Research Faculty of Agriculture , Hokkaido University , Sapporo , Japan.

出版信息

Plant Signal Behav. 2017 May 4;12(5):e1318238. doi: 10.1080/15592324.2017.1318238. Epub 2017 Apr 20.

DOI:10.1080/15592324.2017.1318238
PMID:28426280
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5501231/
Abstract

The Antirrhinum DNA transposon Tam3 uniquely demonstrates low temperature-dependent transposition (LTDT), so transposition does not occur at high temperatures. We previously showed that the detainment of Tam3 transposase (TPase) at the plasma membrane occurs when transposition is inactive, and that TPase is released at the permissive state of Tam3 transposition. LTDT of Tam3 is attributed to interactions between Tam3 and its host. In this addendum, we propose a model to explain the LTDT of Tam3, which is regarded as an equilibrium state reached between the host and parasite to maximize the fitness of both.

摘要

金鱼草DNA转座子Tam3独特地表现出低温依赖性转座（LTDT），因此在高温下不会发生转座。我们之前表明，当转座不活跃时，Tam3转座酶（TPase）会滞留在质膜上，并且在Tam3转座的允许状态下TPase会被释放。Tam3的LTDT归因于Tam3与其宿主之间的相互作用。在本附录中，我们提出了一个模型来解释Tam3的LTDT，该模型被认为是宿主和寄生物之间达到的一种平衡状态，以最大化两者的适应性。

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1
Alternative plant host defense against transposon activities occurs at the post-translational stage.植物针对转座子活性的替代性宿主防御发生在翻译后阶段。
Plant Signal Behav. 2017 May 4;12(5):e1318238. doi: 10.1080/15592324.2017.1318238. Epub 2017 Apr 20.
2
Detainment of Tam3 Transposase at Plasma Membrane by Its BED-Zinc Finger Domain.Tam3转座酶通过其BED锌指结构域滞留于质膜。
Plant Physiol. 2017 Feb;173(2):1492-1501. doi: 10.1104/pp.16.00996. Epub 2016 Dec 22.
3
The temperature-dependent change in methylation of the Antirrhinum transposon Tam3 is controlled by the activity of its transposase.金鱼草转座子Tam3甲基化的温度依赖性变化受其转座酶活性的控制。
Plant Cell. 2006 Jan;18(1):104-18. doi: 10.1105/tpc.105.037655. Epub 2005 Dec 2.
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Multiple regulatory mechanisms influence the activity of the transposon, Tam3, of Antirrhinum.多种调控机制影响金鱼草转座子Tam3的活性。
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Temperature shift coordinately changes the activity and the methylation state of transposon Tam3 in Antirrhinum majus.温度变化协同改变金鱼草中转座子Tam3的活性和甲基化状态。
Plant Physiol. 2003 Jul;132(3):1207-16. doi: 10.1104/pp.102.017533.
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Temperature controls nuclear import of Tam3 transposase in Antirrhinum.温度控制金鱼草 Tam3 转座酶的核输入。
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DNA methylation is not necessary for the inactivation of the Tam3 transposon at non-permissive temperature in Antirrhinum.在金鱼草中，DNA甲基化对于Tam3转座子在非许可温度下的失活并非必需。
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Stable transcription activities dependent on an orientation of Tam3 transposon insertions into Antirrhinum and yeast promoters occur only within chromatin.依赖于 Tam3 转座子插入拟南芥和酵母启动子的方向的稳定转录活性仅发生在染色质内。
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Position effect of the excision frequency of the Antirrhinum transposon Tam3: implications for the degree of position-dependent methylation in the ends of the element.金鱼草转座子Tam3切除频率的位置效应：对元件末端位置依赖性甲基化程度的影响。
Plant Mol Biol. 2001 Nov;47(4):475-90. doi: 10.1023/a:1011892003996.

本文引用的文献

1
Detainment of Tam3 Transposase at Plasma Membrane by Its BED-Zinc Finger Domain.Tam3转座酶通过其BED锌指结构域滞留于质膜。
Plant Physiol. 2017 Feb;173(2):1492-1501. doi: 10.1104/pp.16.00996. Epub 2016 Dec 22.
2
Mechanistic and evolutionary questions about epigenetic conflicts between transposable elements and their plant hosts.转座元件与其植物宿主之间的表观遗传冲突的机制和进化问题。
Curr Opin Plant Biol. 2016 Apr;30:123-33. doi: 10.1016/j.pbi.2016.02.009. Epub 2016 Mar 4.
3
Structural basis of hAT transposon end recognition by Hermes, an octameric DNA transposase from Musca domestica.Hermes 是一种来自家蝇的八聚体 DNA 转座酶，它识别 hAT 转座子末端的结构基础。
Cell. 2014 Jul 17;158(2):353-367. doi: 10.1016/j.cell.2014.05.037.
4
RNA-directed DNA methylation: an epigenetic pathway of increasing complexity.RNA 指导的 DNA 甲基化：日益复杂的表观遗传途径。
Nat Rev Genet. 2014 Jun;15(6):394-408. doi: 10.1038/nrg3683. Epub 2014 May 8.
5
Molecular insights into microRNA-mediated translational repression in plants.植物中 miRNA 介导的翻译抑制的分子机制研究进展
Mol Cell. 2013 Nov 21;52(4):591-601. doi: 10.1016/j.molcel.2013.10.033.
6
Reconstructing de novo silencing of an active plant retrotransposon.从头重建一个活跃的植物反转录转座子的沉默。
Nat Genet. 2013 Sep;45(9):1029-39. doi: 10.1038/ng.2703. Epub 2013 Jul 14.
7
MicroRNAs inhibit the translation of target mRNAs on the endoplasmic reticulum in Arabidopsis.MicroRNAs 抑制拟南芥内质网上靶 mRNA 的翻译。
Cell. 2013 Apr 25;153(3):562-74. doi: 10.1016/j.cell.2013.04.005.
8
DNA methylation in plants: relationship to small RNAs and histone modifications, and functions in transposon inactivation.植物中的 DNA 甲基化：与小 RNA 和组蛋白修饰的关系，以及在转座子失活中的功能。
Plant Cell Physiol. 2012 May;53(5):766-84. doi: 10.1093/pcp/pcs008. Epub 2012 Feb 1.
9
Temperature controls nuclear import of Tam3 transposase in Antirrhinum.温度控制金鱼草 Tam3 转座酶的核输入。
Plant J. 2011 Jan;65(1):146-155. doi: 10.1111/j.1365-313X.2010.04405.x. Epub 2010 Nov 29.
10
Multiple regulatory mechanisms influence the activity of the transposon, Tam3, of Antirrhinum.多种调控机制影响金鱼草转座子Tam3的活性。
New Phytol. 2008 Jul;179(2):343-355. doi: 10.1111/j.1469-8137.2008.02477.x.