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雙魚j asked in 科學植物學 · 1 decade ago

可以告訴我這篇paper主要在說什麼嗎>

這是他的 Abstract

Abstract

Although many studies have investigated the metabolism of selenium and arsenic in hyperaccumulating plants for

phytoremediation purposes, few have explored non-hyperaccumulating plants as a model for general contaminant

exposure to plants. In addition, the result of simultaneous supplementation with selenium and arsenic has not been

investigated in plants. In this study, Chlorophytum comosum, commonly known as the spider plant, was used to

investigate the metabolism of selenium and arsenic after single and simultaneous supplementation. Size exclusion

and ion-pairing reversed phase liquid chromatography were coupled to an inductively coupled plasma mass

spectrometer to obtain putative metabolic information of the selenium and arsenic species in C. comosum after

a mild aqueous extraction. The chromatographic results depict that selenium and arsenic species were sequestered

in the roots and generally conserved upon translocation to the leaves. The data suggest that selenium was directly

absorbed by C. comosum roots when supplemented with SeVI, but a combination of passive and direct absorption

occurred when supplemented with SeIV due to the partial oxidation of SeIV to SeVI in the rhizosphere. Higher

molecular weight selenium species were more prevalent in the roots of plants supplemented with SeIV, but in the

leaves of plants supplemented with SeVI due to an increased translocation rate. When supplemented as AsIII, arsenic

is proposed to be passively absorbed as AsIII and partially oxidized to AsV in the plant root. Although total elemental

analysis demonstrates a selenium and arsenic antagonism, a compound containing selenium and arsenic was not

present in the general aqueous extract of the plant.

懇請各位大大的幫忙了QQ

看了好久看不出個所以然

3 Answers

Rating
  • May
    Lv 4
    1 decade ago
    Favorite Answer

    雖然有許多研究為了植生復育(phytoremediation)的目的,而探討高累積性植物(hyperaccumulating plants)體內硒及砷的代謝,但只有少數的研究是利用非高累積性植物(non-hyperaccumulating plants),來探討在一般污染物暴露下這些植物的狀態。

    另外,同時給予植物硒和砷的結果也沒有被研究。

    在本實驗中,Chlorophytum comosum(C. comosum)是一種像吊蘭(spider plant)的植物,被用來研究單獨或同時給予硒和砷時,植物體內的代謝狀況。

    利用大小排除與配離子逆向液相層析儀(SE-IP-RPLC)結合感應耦合電漿質譜儀(ICP-MS)分析水萃取液,可以獲得訊息以推測C. comosum體內硒和砷的代謝情形。

    層析的結果描繪出硒和砷被隔離在根部,而且通常會向上位移至葉子保存。

    這些數據提示,當補充六價硒(SeVI)時,硒會被C. comosum的根直接吸收,但若是補充四價硒(SeIV)時,則是被動吸收和直接吸收同時發生,這是因為在根圈會有部份SeIV氧化為SeVI。

    補充SeIV時,植物根部普遍是較高分子量的硒,但是若補充SeVI,則是在葉子部位,這是因為位移速率增加的緣故。

    當補充三價砷(AsIII)時,砷被認為會以AsIII形式被動吸收,且在植物根部部份會氧化為五價砷(AsV)。

    雖然所有的元素分析証明硒和砷是對立情形的,但一般植物的水萃取液內不會存有含有硒和砷的化合物。

    p.s. Chlorophytum comosum,台灣沒有這植物的翻譯名。

    p.s. Size exclusion and ion-pairing reversed phase liquid chromatography:是大小排除與配離子逆向液相層析儀(SE-IP-RPLC)。

    p.s. inductively coupled plasma mass spectrometer:就是感應耦合電漿質譜儀(ICP-MS)。

    2009-04-14 13:06:31 補充:

    雖然有點多管閒事,但是給樓上的某大大,最好不要直接post翻譯軟體的結果,那翻譯真的是……

    不過,若非看到這篇翻譯……不然…….我實在不喜歡在休息時間看長篇英文paper啊!^^||||

    Source(s): 我自己看了n年paper的經驗
  • 1 decade ago

    In this study, Chlorophytum comosum, commonly known as the spider plant, was used to

    investigate the metabolism of selenium and arsenic after single and simultaneous supplementation.

    ====================================================

    重點就這一句

    這一句之前的是在說之前那些研究已經被做過了

    這一句之後的那一大段是在說他們用哪些儀器

    用什麼方式做現在這個研究

    我想你可能是那些奇奇怪怪的儀器名稱還有專有名詞看不懂吧

    那你就只能看這邊報告的研究方法那一部份先

    然後把不懂的全部搞清楚

    你就知道大概那些儀器做什麼的

    還有那些縮寫的專有名詞是什麼意思

    之後再把整篇報告看一次你應該就懂了

    如果還看不懂

    就是這篇報告對你來說太細節了

    放棄吧... 換看下一篇 @@"

    2009-04-11 14:54:39 補充:

    樓上的妞妞利害ㄟ

    竟然整個翻成中文 @@"

  • 1 decade ago

    摘要

    雖然許多研究在hyperaccumulating的植物中調查了硒和砷新陳代謝為

    phytoremediation目的,少數探索了non-hyperaccumulating的植物作为一般汙染物的一個模型

    對植物的暴露。 另外,同時補充的結果與硒和砷的不是

    調查在植物中。 在這項研究中, Chlorophytum comosum,一般叫作吊兰,用于

    在唯一和同時補充以後調查硒和砷新陳代謝。 估量排除

    并且離子配對反回階段液相色谱被結合了對引人地被結合的等離子大量

    以後得到硒和砷種類的想像新陳代謝的信息的分光儀在C. comosum的

    溫和的含水提取。 色譜分析的結果描述硒和砷種類被隔離了

    在根和通常保存在遷移對葉子。 數據建議硒直接地

    吸收由C. comosum根源,当用SeVI,但是被動和直接吸收的組合補充

    發生,当用SeIV補充由于SeIV的部份氧化作用對在根際的SeVI。 更高

    分子量硒種類是流行在用SeIV補充的植物根,但是在

    用SeVI補充的植物葉子由于增加的遷移對估計。 当補充作為AsIII,砷

    提議被動地被吸收作為AsIII和部分地被氧化到在植物根的AsV。 雖然總自然力

    分析展示硒,并且砷對抗性、複合包含的硒和砷不是

    提出在植物的一般含水萃取物。

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