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Effects of simultaneously elevated temperature and CO2 levels on Nicotiana benthamiana and its infection by different positive-sense RNA viruses are cumulative and virus type-specific
Virology ( IF 2.8 ) Pub Date : 2017-09-29 , DOI: 10.1016/j.virol.2017.08.015
Francisco J Del Toro 1 , Farshad Rakhshandehroo 2 , Beatriz Larruy 1 , Emmanuel Aguilar 1 , Francisco Tenllado 1 , Tomás Canto 1
Affiliation  

We have studied how simultaneously elevated temperature and CO2 levels [climate change-related conditions (CCC) of 30 °C, 970 parts-per-million (ppm) of CO2 vs. standard conditions (SC) of 25 °C, ~ 405 ppm CO2] affect physiochemical properties of Nicotiana benthamiana leaves, and also its infection by several positive-sense RNA viruses. In previous works we had studied effects of elevated temperature, CO2 levels separately. Under CCC, leaves of healthy plants almost doubled their area relative to SC but contained less protein/unit-of-area, similarly to what we had found under conditions of elevated CO2 alone. CCC also affected the sizes/numbers of different foliar cell types differently. Under CCC, infection outcomes in titers and symptoms were virus type-specific, broadly similar to those observed under elevated temperature alone. Under either condition, infections did not significantly alter the protein content of leaf discs. Therefore, effects of elevated temperature and CO2 combined on properties of the pathosystems studied were overall cumulative.



中文翻译:


同时升高温度和 CO2 水平对本塞姆氏烟草及其不同正义 RNA 病毒感染的影响是累积的且具有病毒类型特异性



我们研究了如何同时升高温度和 CO 2水平[气候变化相关条件 (CCC) 30 °C,CO 2百万分之 970 (ppm) 与标准条件 (SC) 25 °C,~ 405 ppm CO 2 ]影响本塞姆氏烟草叶片的理化性质也影响几种正链RNA病毒的感染。在之前的工作中,我们分别研究了高温、CO 2水平的影响。在 CCC 条件下,健康植物的叶子面积相对于 SC 几乎增加了一倍,但每单位面积含有较少的蛋白质,与我们在单独升高 CO 2的条件下发现的情况类似。 CCC 还对不同叶细胞类型的大小/数量产生不同的影响。在 CCC 下,滴度和症状的感染结果是病毒类型特异性的,与单独高温下观察到的结果大致相似。在任何一种情况下,感染都不会显着改变叶盘的蛋白质含量。因此,升高的温度和CO 2结合对所研究的病理系统特性的影响是总体累积的。

更新日期:2017-09-29
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