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首页> 外文期刊>Biotechnology Advances: An International Review Journal >Multiple biological functions of sporamin related to stress tolerance in sweet potato (Ipomoea batatas Lam). (Special Issue: ACB 2011.)
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Multiple biological functions of sporamin related to stress tolerance in sweet potato (Ipomoea batatas Lam). (Special Issue: ACB 2011.)

机译：Sporamin的多种生物学功能与甘薯（Ipomoea batatas Lam）的胁迫耐受性有关。 （特刊：ACB2011。）

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摘要

The initial investigation of the nature of the proteins in the tuber of sweet potato (Ipomoea batatas Lam.) revealed a globulin-designated "ipomoein," which was reported by Jones and Gersdorff, (1931). Later, "ipomoein" was renamed "sporamin" and was found to be a major storage protein that accounted for over 80% of the total protein in the tuberous root. To date, sporamin has been studied by a series of biochemical and molecular approaches. The first purification of sporamin into two major fractions, A and B, was successfully completed in 1985. Several characteristics of the protein, such as the diversification of the nucleotide sequences in the gene family, the protein structure, the biological functions of storage, defense, inhibitory activity and ROS scavenging, were identified. In the past decade, sporamin was classified as a Kunitz-type trypsin inhibitor, and its insect-resistance capability has been examined in transgenic tobacco and cauliflower plants, indicating the multiple functions of this protein has evolved to facilitate the growth and development of sweet potato. Sporamin is constitutively expressed in the tuberous root and is not normally expressed in the stem or leaves. However, this protein is expressed systemically in response to wounding and other abiotic stresses. These dual expression patterns at the transcriptional level revealed that the complex regulatory mechanism of sporamin was modulated by environmental stresses. The versatile functions of sporamin make this storage protein a good research model to study molecular evolution, regulatory mechanisms and physiological functions in plants. This review summarizes and discusses recent approaches and future perspectives in agricultural biotechnology.
机译：对甘薯（Ipomoea batatas Lam。）块茎中蛋白质性质的初步调查显示，球蛋白命名的“ ipomoein”，由Jones和Gersdorff（1931）报道。后来，“ ipomoein”被重命名为“ sporamin”，被发现是一种主要的存储蛋白，占块根中总蛋白的80％以上。迄今为止，已经通过一系列生化和分子方法研究了孢子素。 1985年成功完成了将孢粉蛋白分为两个主要部分（A和B）的首次纯化。该蛋白的一些特性，例如基因家族中核苷酸序列的多样化，蛋白结构，贮藏，防御的生物学功能鉴定出抑制活性和清除ROS。在过去的十年中，sporamin被归类为Kunitz型胰蛋白酶抑制剂，并且已经在转基因烟草和花椰菜植物中检测了其抗虫能力，表明该蛋白的多种功能已经进化，从而促进了甘薯的生长和发育。 。 Sporamin在结节状根中组成性表达，而在茎或叶中通常不表达。但是，这种蛋白质是响应伤口和其他非生物胁迫而系统表达的。这些在转录水平上的双重表达模式表明，sporamin的复杂调控机制受到环境压力的调节。 Sporamin的多功能功能使该贮藏蛋白成为研究植物分子进化，调控机制和生理功能的良好研究模型。这篇综述总结并讨论了农业生物技术中的最新方法和未来前景。

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