x

auxin

uploads/auxin.jpg

auxin n.(植物)生長素。

n. (植物)生長素。 “auxin a“ 中文翻譯：   植物生長素; 茁長素a“anti auxin“ 中文翻譯：   抗促長素“auxin b“ 中文翻譯：   植物生長素b“auxin lactone“ 中文翻譯：   生長素內脂“auxin migration“ 中文翻譯：   植物激素轉移“auxin precursor“ 中文翻譯：   生長素前體“auxin precursors“ 中文翻譯：   生長素前體“auxin receptor“ 中文翻譯：   生長素受體“bound auxin“ 中文翻譯：   束縛生長激素; 束縛生長素“diffusible auxin“ 中文翻譯：   可擴散植物生長素“exogenous auxin“ 中文翻譯：   外生植物激素“free auxin“ 中文翻譯：   自由生長激素; 自由生長素“natural auxin“ 中文翻譯：   天然生長素; 天然植物生長激素“synthetic auxin“ 中文翻譯：   合成生長激素; 合成生長素“auxin gradient theory“ 中文翻譯：   生長素梯度學說“auxin-kinin balance“ 中文翻譯：   植物生長素與細胞分裂素平衡“plant growth hormone; auxin“ 中文翻譯：   植物生長激素“auximone“ 中文翻譯：   n. 植物激長素。 “auxilytic“ 中文翻譯：   促溶的; 促溶解的; 促細胞分解“auxilysin“ 中文翻譯：   促溶解素; 促溶素; 輔溶素“auxilliary winch“ 中文翻譯：   輔助絞車“auxilliary collector len“ 中文翻譯：   輔助聚光透鏡

auxochrome

The result of counting lr primordium indicates that quercetin does not influence primordium formation , but inhibits its elongation . this is essentially different to npa , which inhibits both primordium formation and elongation . also , quercetin increases hypocotyls length , which is linked toward elevated auxin transport level 原基統計結果表明， q對側根原基發生的影響和npa有著根本的不同： q不影響側根原基的發生，而只影響原基的延伸，使側根發生比正常延遲一步。

By combining the information from the cdna sequences with functions of their homologs , we suggest that two kinds of hormones may play important roles during flower regeneration in a few ways : ( i ) proteolytic system of ubiqutin / 26s proteosome complex , ( ii ) actin - dependent vesicular cycling of auxin efflux carrier , ( iii ) regulating transcription of genes , ( iv ) phosphorylation and dephosphorylation 經過進一步的篩選，結合序列特征和同源基因的功能信息對這些基因功能進行了初步分析。認為兩種外源激素可能通過泛素26s蛋白酶體復合體對調節蛋白的降解機制，生長素運輸載體肌動蛋白依賴的小泡運輸，基因轉錄調節，磷酸化和去磷酸化等調節過程誘導風信子花分生組織的再生。

The materials in this study were arabidopsis thaliana . ( wt ) and its mutants including ethylene over producer mutant ( eto1 - 1 ) , ethylene insensitive root mutant ( eir1 - 1 ) and ethylene insensitive mutant ( etr1 - 3 ) . from the phenotypes of 12 - d - old seedlings of arabidopsis wt and mutants , the root gravitropism was obviously enhanced in etol - 1 , but diminished in eir1 - 1 and etr1 - 3 , compared with wt . the shoot negative gravitropism was also diminished in etiolated seedlings of etr1 - 3 以擬南芥的eth過量產生型突變體( etol - 1 ) ，根對eth不敏感型突變體( eirl - 1 ，地上部對eth響應) ， eth不敏感型突變體( etrl - 3 ，地上部和根均對eth不敏感)及其野生型( wt ， columbia生態型)為實驗材料，利用根的向重力性反應為模式，分析了其中eth對auxin效應的調控及其原因。

Lateral root development and gravitropism are regulated by polar auxin transport ( pat ) , and auxin efflux inhibitors ( aei ) inhibit lr growth and tropism . because of > the structural similarity to pat inhibitor npa , flavonoid has long been regarded as endogenous polar auxin transport inhibitor 生長素極性運輸( polarauxintransport , pat )對側根發生和根尖向地性起著重要的調節作用，添加外源生長素極性運輸抑制劑不僅抑制了側根發生，同時還使根尖喪失了向地性。

Our results provided direct evidence that pf40 gene play a role in the tissue development , with knockout this gene the lateral buds were not visible . the plant hormones auxin and cytokinin appear to play a major role in controlling this process , therefore , the concertrition of auxin and cytokinin was measured , however , the concentration of the two hormone was variation a little in transgenic plants , but the ratio of the two was more than 5 fold in the pf40 gained function plant than that in wild type . furthermore the pf40 gene effected differentiation of the vascular bundles in different transgenic plants , results showed the pf40 could change both xylary fibers and vessel 進一步的實驗發現pf40基因會影響植物側芽發育的早期，即pf40基因作用在側芽形成與發育的早期。對轉基因谷子的組織切片的分析還表明pf40基因引起不同形式的轉基因谷子的維管組織的發育的差異，轉化正義載體谷子的木質部變多，維管系統增多，而反義或干擾的轉基因谷子的木質部數量變少，木質部分化異常。從轉基因的結果可見pf40基因可以減弱植物的頂端優勢，這種作用是通過改變植物體內激素的含量實現的。

Pharmacological evidences show that quercetin - inducing hypergravitropism is structural specific activity , and the second massager such as ca2 + and camp take parts in this process , and polar auxin transport is indispensable . a conclusion can be made from all these results that quercetin , one kind of flavonoid , does not act as pat inhibitor but regulates auxin transport at the level of signal transduction in arabidopsis 藥物學實驗結果表明， q誘導超向地性來自于末端特異性結構，同時細胞內的ca ~ ( 2 + )和camp等二級信使也參與了這一過程，并且生長素極性運輸也是發生超向地性所不可缺少的條件。

In this paper , two kind of sensors for determination of auxin and peroxide hydrogen have been developed , which based on the new method for the immobilization of biomolecules and the special performance of mediator . the main works are summarized as follows : 1 本文基于生物分子固定化技術的新發展，結合介體分子能加速電子傳遞的特殊性能，提出了植物生長激素與過氧化氫兩類傳感器的制備方法，具體內容包括如下： 1

2 hybridization results show that hag1 is specifically expressed in stamens and carpels in vivo ; hag1 mrna was first detected in cultured explants at day 5 in the medium containing high levels of cytokinin and auxin , which could induce floral regeneration in vitro Rna分子雜交結果表明： hag1特異性地在植株上花的雄蕊和心皮中表達：在高濃度激素培養誘導花芽形成過程中，第5天開始檢測到外植體中有該基因的mrna 。

Floral organs have been successfully induced from the regenerated floral buds of ffyacinthus orienralis l . by precisely controlling exogenous hormones in the medium . under high concentration of cytokinin and auxin , the regenerated floral bud produces only tepals 以風信子花被片為外植體，通過控制培養基中細胞分裂素和生長素的濃度，可誘導花芽的再生和控制產生花器官的種類，建立起離體花器官定向控制系統。

Comparing the difference in the modes of action between brassinolide and auxin , gibberellin , it has been proposed that the signal transduction pathway of br is different from those of other plant hormones 通過比較油菜素內酯與生長素、赤?素促進生長作用方式的異同，提出油菜素內酯促進生長的信號傳導路徑不同于其它植物激素。

Now , it is confident that auxin plays the central role in regulating the gravitropism in plants . it has been discovered that the gravitropism had changed in some mutants on eth biosynthesis or signaling 我們和其他學者在對乙烯( eth )的一系列突變體的研究中發現，某些乙烯合成或響應的突變體其向重力性反應也發生改變。

So extremely probably , eth affects the gravitropism via auxin . in this case , such mutants might be used as the ideal model plants for the study of the closs - talk between eth and auxin 因此， eth有可能通過調控auxin這個中心因素來影響向重力性反應，這些乙烯突變體極可能成為研究eth對auxin作用的理想模式材料。

Cytokinins move through the plant less readily than auxins or gibberellins and appear to move in opposition to auxins ? from root upward to shoot , not shoot downward to root 細胞分裂素不像生長激素或者赤霉素那樣容易移動，看起來他們和生長激素移動的方向相反? ?從根部到芽，而不是由芽到根部。

In this mini - review , we will summarize recent progress of auxin regulation in leaf development and morphogenesis , and try to understand the complex regulation network of leaf development 本文著重介紹生長素在葉片生長發育和形態建成中的調控作用，試圖了解復雜葉片發育調控網絡。

[ c ] iaa is used to measure pat ability in arabidopsis stem under the treatment of quercetin , which promotes auxin transport at the concentration of 25 u m as a result 測量擬南芥下胚軸長度結果表明， q促進了下胚軸的延伸，這一表型與生長素極性運輸增強相聯系。

In order to study eth ' s action on auxin in the mutants , it is necessary to establish an efficient quantitative assay of iaa in plants 為了分析突變體材料中eth對auxin的調控作用，建立高度專一和靈敏的內源吲哚乙酸( iaa )定量檢測技術是必要的。

In addition , the paper also discusses the relation between auxin and the development of vessel element during seedling 此外對金魚革幼苗發育中生長素與導管分子分化的關系也進行了討論。

Phytohormones , especially auxin , play essential roles in coordination of these two regulation mechanisms 植物激素，尤其是生長素在協調體內外調節機制中起著不可或缺的作用。

Study on the comparison of the changes of oxidase activities in eucalyptus cuttings treated with different auxins 不同生長素處理對桉樹無性系插條氧化酶活性影響的比較研究