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Identification and primary genetic analysis of Arabidopsis stomatal mutants in response to multiple stresses

机译:拟南芥气孔突变体对多种胁迫的响应及初步遗传分析

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摘要

In response to variable environmental conditions, guard cells located in the leaf epidermis can integrate and cope with a multitude of complicated stimuli, thereby making stomata in an appropriate state. However, many signaling components in guard cell signaling remain elusive. In our laboratory, a tool for non-invasive remote infrared thermal images was used to screen an ethyl methane sul-fonate-mutagenized population for Arabidopsis stomatal response mutants under multiple stresses (ABA, H_2O_2, CO_2, etc.). More than forty "hot" or "cold" mutants were isolated (above or below 0.5 deg C in contrast to normal plantlets). Identification and primary genetic analysis of these mutants show that they are monogenic recessive mutations and there exist distinct difference in stomata apertures compared to wild type. These mutants in response to various environmental stresses and hormones were comprehensively investigated, which enables us to further understand the cross-talk in different signal transduction pathways.
机译:响应可变的环境条件,位于叶表皮中的保卫细胞可以整合并应对多种复杂的刺激,从而使气孔处于适当的状态。但是,保卫小区信令中的许多信令组件仍然难以捉摸。在我们的实验室中,使用了一种用于非侵入式远程红外热成像的工具,来筛选在多种胁迫(ABA,H_2O_2,CO_2等)下拟南芥气孔反应突变体的甲烷磺酰胺乙酯诱变种群。分离出四十多个“热”或“冷”突变体(与正常苗相比,在0.5℃以上或以下)。这些突变体的鉴定和初步遗传分析表明,它们是单基因隐性突变,与野生型相比,气孔孔径存在明显差异。这些突变体响应各种环境压力和激素进行了全面研究,这使我们能够进一步了解不同信号转导途径中的串扰。

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