Is Chloroplast Movement in Tobacco Plants Influenced Systemically after Local Illumination or Burnin

来源 :Journal of Integrative Plant Biology | 被引量 : 0次 | 上传用户:liugang
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Chloroplast movement has been studied in many plants mainly in relation to the local light, mechanical or stress effects. Here we investigated possible systemic responses of chloroplast movement to local light or burning stress in tobacco plants (Nicotiana tabacum cv. Samsun). Chloroplast movement was measured using two independent methods: one with a SPAD 502 Chlorophyll meter and another by collimated transmittance at a selected wavelength (676 nm). A sensitive periodic movement of chloroplasts was used in high or low (2 000 or 50 μmol/m2 per s photosynthetically active radiation, respectively) cold white light with periods of 50 or 130 min. Measurements were carried out in the irradiated area, in the non-irradiated area of the same leaf or in the leaf located on the stem below the irradiated or burned one. No significant changes in systemic chloroplast movement in non-irradiated parts of the leaf and in the non-treated leaf were detected. Our data indicate that chloroplast movement in tobacco is dependent dominantly on the intensity and spectral composition of the incident light and on the local stimulation and state of the target tissue. No systemic signal was strong enough to evoke a detectable systemic response in chloroplast movement in distant untreated tissues of tobacco plants. Chloroplast movement has been studied in many plants mainly in relation to the local light, mechanical or stress effects. Here we investigated possible systemic responses to chloroplast movement to local light or burning stress in tobacco plants (Nicotiana tabacum cv. Samsun). Chloroplast movement was measured using two independent methods: one with a SPAD 502 Chlorophyll meter and another by collimation transmittance at a selected wavelength (676 nm). A sensitive periodic movement of chloroplasts was used in high or low (2 000 or 50 μmol / m2 per s photosynthetically active radiation, respectively) cold white light with periods of 50 or 130 min. Measurements were carried out in the irradiated area, the non-irradiated area of ​​the same leaf or in the leaf located on the stem below the irradiated or burned one. No significant changes in systemic chloroplast movement in non-irradiated parts of the leaf and in the non-treated leaf were detected. Our data indicate that chloroplast movement in tobacco is dependent dominantly on the intensity and spectral composition of the incident light and on the local stimulation and state of the target tissue. No systemic signal was strong enough to evoke a detectable systemic response in chloroplast movement in distant untreated tissues of tobacco plants.
其他文献
储层孔隙对页岩气赋存状态和流动机制具有关键控制作用.页岩孔隙演化模式研究能够深化页岩成储机理的认识,但目前相关研究仍然薄弱.以鄂尔多斯延长组陆相低熟页岩(镜质体反射
期刊
目的:探讨Th1/Th2特异性转录因子T-bet及GATA-3在口腔扁平苔藓(OLP)发病中的作用及意义。  方法:选择OLP患者30例(其中糜烂型OLP14例,非糜烂型OLP16例),健康对照组30例。采用RT
目的:通过观察转化生长因子-β(TGF-β)和转化生长因子-βⅡ型受体(TGF-βRⅡ)在口腔癌中的表达情况,探讨了TGF-β与口腔癌发生发展的关系,为利用TGF-β治疗口腔癌患者提供理
为查明川东地区龙潭组泥页岩成藏地质条件,对泥页岩沉积环境、有机质丰度、泥页岩厚度、有机质热演化程度、储集空间类型及孔渗性等烃源及储集条件进行进行分析.结果表明:川
在金融创新的驱动下,金融质押担保中出现多种新型“质权”.根据“物权法定”原则,这类质押担保法律效力有待商榷.如何解决这类实务难题有待于权威案例的指导.指导案例53号回
茶树病虫害种类多,登记用于茶树病虫害防治的农药品种有限,茶农用药存在一定的盲目性.本文在分析登记用于茶树病虫害防治的农药品种的基础上,针对不同茶叶质量等级标准要求,
茶叶的品质是决定茶口感的关键,而良好的包装及储藏条件对茶叶的品质具有重要的影响.在保证控制茶叶湿度、氧气、温度、光照等条件不变的前提,对不同材质包装的茶叶进行60d的
该研究旨在通过严格设计的动物实验及临床研究,检验透明质酸钠治疗颞颌关节退行性关节病的效能及不良反应,为临床治疗颞颌关节退行性关节病寻找新的手段,并通过动物实验探讨
舍格化综合征(Sjogrens syndrome,简称SS)是一种由淋巴细胞浸润的主要损伤外分泌腺的全身性免疫性疾病.该研究由两部分组成:1、个性心理改变的研究;该研究首次报道国人PSS患