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首页> 外文期刊>Plant Physiology and Biochemistry >Ethylene involvement in the regulation of the H+-ATPase CsHA1 gene and of the new isolated ferric reductase CsFRO1 and iron transporter CsIRT1 genes in cucumber plants
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Ethylene involvement in the regulation of the H+-ATPase CsHA1 gene and of the new isolated ferric reductase CsFRO1 and iron transporter CsIRT1 genes in cucumber plants

机译：乙烯参与黄瓜植物H + -ATPase CsHA1基因以及新分离的铁还原酶CsFRO1和铁转运蛋白CsIRT1基因的调控

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In previous works using ethylene inhibitors and precursors, it has been shown that ethylene participates in the regulation of several Fe deficiency stress responses by Strategy I plants, such as enhanced ferric reductase activity, rhizosphere acidification and subapical root hair development. Furthermore, recent evidence suggests that ethylene could regulate the expression of both the ferric reductase and the iron transporter genes of Strategy I plants by affecting the FER (or FER-like) transcription factor. Recently, two H-ATPase genes have been isolated from cucumber roots. CsHA1 and CsHA2. CsHA1 is Lip-regulated under Fe deficiency while CsHA2 is constitutively expressed. In this work we have cloned and characterized the sequences of the ferric reductase (CsFRO1) and the iron transporter (CsIRT1) genes from cucumber (Cucumis sativus L. cv Ashley). Expression of CsHA1, CsFRO1 and CsIRT1 is diminished in Fe-deficient roots by treatment with ethylene inhibitors, like Co (cobalt) or AIDA (aminooxyacetic acid). Treatment with ethylene precursors, like ACC (1-aminocyclopropane-1-carboxylic acid) or Ethephon (2-chloroethylpliosphonic acid), resulted in increased CsHA1, CsFRO1 and CsIRT1 transcript levels and increased ferric reductase activity during early stages of Fe deficiency. These results suggest that ethylene is involved in the regulation of CsHA1, CsFRO1 and CslRT1 gene expression. (C) 2007 Elsevier Masson SAS. All rights reserved.
机译：在以前使用乙烯抑制剂和前体的工作中，已经表明，乙烯参与了策略I植物对几种铁缺乏胁迫的响应，例如增强的铁还原酶活性，根际酸化作用和根尖发育。此外，最近的证据表明，乙烯可以通过影响FER（或类似FER的）转录因子来调节策略I植物的铁还原酶和铁转运蛋白基因的表达。最近，已经从黄瓜根中分离出两个H-ATPase基因。 CsHA1和CsHA2。 CsHA1在铁缺乏下受唇部调节，而CsHA2组成型表达。在这项工作中，我们从黄瓜（Cucumis sativus L. cv Ashley）克隆并鉴定了铁还原酶（CsFRO1）和铁转运蛋白（CsIRT1）基因的序列。通过使用乙烯抑制剂（如Co（钴）或AIDA（氨基氧乙酸））处理，可在缺铁根中减少CsHA1，CsFRO1和CsIRT1的表达。在铁缺乏的早期阶段，使用乙烯前体（例如ACC（1-氨基环丙烷-1-羧酸）或乙烯利（2-氯乙基吡啶磺酸））进行处理，会导致CsHA1，CsFRO1和CsIRT1转录水平升高，铁还原酶活性升高。这些结果表明乙烯参与CsHA1，CsFRO1和CslRT1基因表达的调节。 （C）2007 Elsevier Masson SAS。版权所有。

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