Alcázar Rubén, Marco Francisco, Cuevas Juan C, Patron Macarena, Ferrando Alejandro, Carrasco Pedro, Tiburcio Antonio F, Altabella Teresa
Laboratori de Fisiologia Vegetal, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Spain.
Biotechnol Lett. 2006 Dec;28(23):1867-76. doi: 10.1007/s10529-006-9179-3. Epub 2006 Sep 22.
Environmental stresses are the major cause of crop loss worldwide. Polyamines are involved in plant stress responses. However, the precise role(s) of polyamine metabolism in these processes remain ill-defined. Transgenic approaches demonstrate that polyamines play essential roles in stress tolerance and open up the possibility to exploit this strategy to improve plant tolerance to multiple environmental stresses. The use of Arabidopsis as a model plant enables us to carry out global expression studies of the polyamine metabolic genes under different stress conditions, as well as genome-wide expression analyses of insertional-mutants and plants over-expressing these genes. These studies are essential to dissect the polyamine mechanism of action in order to design new strategies to increase plant survival in adverse environments.
环境胁迫是全球作物减产的主要原因。多胺参与植物的胁迫反应。然而，多胺代谢在这些过程中的确切作用仍不明确。转基因方法表明多胺在胁迫耐受性中起重要作用，并为利用该策略提高植物对多种环境胁迫的耐受性开辟了可能性。以拟南芥作为模式植物，使我们能够在不同胁迫条件下对多胺代谢基因进行全局表达研究，以及对插入突变体和过表达这些基因的植物进行全基因组表达分析。这些研究对于剖析多胺的作用机制至关重要，以便设计新的策略来提高植物在不利环境中的存活率。
