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tea_gl9871銅蟲 (正式寫手)
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[求助]
求高手翻譯一下，自己雖然能看懂大概但不能用漢語準確表述。
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As part of an elaborate signaling system, the phloem translocation stream contains a large population of RNA molecules and proteins, suggesting that plants use mobile RNAs and proteins to integrate developmental processes at the whole-plant level. Because of the phloem’s involvement in the production and collection of signal molecules in source organs and in transporting and releasing them to sink organs, the phloem exhibits great potential to facilitate interorgan coordination and to mediate processes of development. This chapter focuses on three model systems as primary examples of noncell autonomous movement of protein or full-length mRNAs that impact plant development. The first example is the long-distance transport of FLOWERING LOCUS T (FT) protein to the apical shoot to induce flowering. The second example involves aRNA–protein complex of pumpkin (Cucurbita maxima) that moves CmGAI and other full-length mRNAs. In this system, a polypyrimidine tract-binding protein, designated CmRBP50, serves as the core RNA-binding protein in a phloem–mobile complex. The final example is the transport of Solanum tuberosum BEL5 (StBEL5) RNA from leaves to stolon tips to activate tuber formation in potato (Solanum tuberosum). StBEL5 is a transcription factor that functions in tandem with Knotted1-like proteins. These examples represent complex and dynamic phloem transport systems involving RNA–protein and protein–protein interactions that facilitate directed movement and maintain the integrity of the signal molecules. |
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nwsuafliu
木蟲 (著名寫手)
- 翻譯EPI: 144
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- 注冊: 2005-12-17
- 專業(yè): 作物分子育種
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tea_gl9871: 金幣+20, 翻譯EPI+1, ★★★★★最佳答案, 你的強悍已不能用獎勵表現(xiàn)，不知道能否跟你深度交流？謝謝！ 2013-01-04 08:59:40
tea_gl9871: 金幣+20, 翻譯EPI+1, ★★★★★最佳答案, 你的強悍已不能用獎勵表現(xiàn)，不知道能否跟你深度交流？謝謝！ 2013-01-04 08:59:40
| 作為精巧信號系統(tǒng)的一部分，韌皮部運輸流中含有大量RNA分子和蛋白質，說明植物在植株水平上利用可移動RNAs和蛋白來整合發(fā)育進程。由于韌皮部參與源器官中信號分子的產(chǎn)生和收集及其向庫器官的運輸和釋放，韌皮部在促進器官間協(xié)調作用及介導發(fā)育進程方面發(fā)揮巨大的潛在作用。本章集中在3個模式系統(tǒng)上，作為影響植物發(fā)育的蛋白或全長mRNAs的非細胞自主移動的主要例子。第一個例子是開花位點（FT）蛋白向莖尖長距離運輸誘導開花。第二個例子論及南瓜(Cucurbita maxima)中一個RNA-蛋白復合體移動CmGAI及其他全長mRNAs。該系統(tǒng)中，多聚嘧啶區(qū)結合蛋白CmRBP50是韌皮部移動復合體中核心的RNA結合蛋白。最后一個例子是馬鈴薯（Solanum tuberosum）BEL5(StBEL5)RNA從葉片向匍匐莖尖運輸，激活馬鈴薯塊莖形成。StBEL5是一個轉錄因子，和類Knotted1蛋白共同發(fā)揮作用。這些例子代表了復雜、動態(tài)的韌皮部運輸系統(tǒng)，包括RNA-蛋白、蛋白-蛋白互作促進定向移動，并維持信號分子的完整性。 |
2樓2013-01-03 16:22:51
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