Jiangnan University, Wuxi, China.
Chemosphere. 2010 Feb;78(7):859-63. doi: 10.1016/j.chemosphere.2009.11.050. Epub 2009 Dec 29.
In order to understand the effect of ultraviolet-B (UV-B) radiation on plant, the accumulated amount of dry matter and the distribution of the mineral elements in the different organs of soybean seedlings treated with UV-B radiation were investigated using the inductively coupled plasma-atomic emission spectrometry (ICP-AES). The results indicated that the accumulated amount of dry matter in root, stem and leaf of soybean seedlings treated with UV-B radiation during the stress and recovery period was lower than that of the control soybean. Moreover, the content of macroelements in the root, stem and leaf of soybean seedlings during the stress period and recovery period were decreased comparing with that of the control soybean. The change in the contents of microelements depended on the intensity of UV-B radiation, the organs of soybean and the treating period. Finally, the results from the stepwise regression analysis indicated that the content of specific microelements also affected the accumulation of dry matter in the soybean seedlings treated with UV-B radiation comparing with the contents of macroelements in the control soybean. The relationship between the contents of mineral elements and the accumulation of dry matter depended on the intensity of UV-B radiation and the organs of soybean. These results demonstrated that UV-B radiation induced the change in the distribution of mineral elements in root, stem and leaf, leading to the decrease in the accumulation of dry matter and then the inhibition of soybean growth. It was a possible effect mechanism of UV-B radiation on plant.
为了了解紫外线-B（UV-B）辐射对植物的影响，利用电感耦合等离子体原子发射光谱法（ICP-AES）研究了 UV-B 辐射处理的大豆幼苗不同器官中干物质的积累量和矿物质元素的分布。结果表明，在胁迫和恢复期，UV-B 辐射处理的大豆幼苗的根、茎和叶中的干物质积累量低于对照大豆。此外，在胁迫期和恢复期，大豆幼苗的根、茎和叶中的大量元素含量均低于对照大豆。微量元素含量的变化取决于 UV-B 辐射的强度、大豆的器官和处理时间。最后，逐步回归分析的结果表明，与对照大豆中的大量元素含量相比，UV-B 辐射处理的大豆幼苗中特定微量元素的含量也会影响干物质的积累。矿物质元素含量与干物质积累之间的关系取决于 UV-B 辐射的强度和大豆的器官。这些结果表明，UV-B 辐射诱导了根、茎和叶中矿物质元素分布的变化，导致干物质积累减少，从而抑制了大豆的生长。这可能是 UV-B 辐射对植物的影响机制之一。
