Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, 100000, Vietnam.
Faculty of Biology, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuân, Hanoi, 100000, Vietnam.
Environ Sci Pollut Res Int. 2022 Jun;29(28):42090-42101. doi: 10.1007/s11356-022-19652-7. Epub 2022 Mar 25.
Over the past decade, the extent and magnitude of acid rain in Vietnam and other Asian countries have become more apparent. In this study, the effect of simulated acid rain (pH 5.0, 4.0, and 3.0) and control treatment (pH 6.0) are observed for three species Brassica integrifolia, Brassica rapa, and Brassica juncea in Hanoi. The pot experiment was conducted for 42 days and arranged according to a randomized complete block design (RCBD), replicated 3 times with acid rain exposure being supplied every 4 days. The results show that acid rain causes direct damage to leaves. Observations reveal white spots on leaves; leaves getting discolored and gradually turning yellow, curling leaf marginals, and turning dark blue, with the most severe symptoms being necrotic leaves. Parameters of the shoot and root length, leaf area, biomass, and chlorophyll content all decrease as pH drops. However, the accumulation of proline content in leaves tends to increase with greater acidity. In conclusion, Brassica rara has the highest resistance capability to acid rain compared with Brassica integrifolia and Brassica juncea, especially its proline content is the highest at pH 3.0 in three Brassicaceae species.
在过去的十年中，越南和其他亚洲国家的酸雨程度和范围变得更加明显。本研究观察了模拟酸雨（pH 5.0、4.0 和 3.0）和对照处理（pH 6.0）对三种植物芥菜、油菜和芥菜在河内的影响。盆栽实验进行了 42 天，采用随机完全区组设计（RCBD）排列，每个处理重复 3 次，每隔 4 天施加酸雨。结果表明，酸雨会对叶片造成直接损伤。观察发现叶片上出现白色斑点；叶片变色并逐渐变黄，叶缘卷曲，叶片呈深蓝色，最严重的症状是叶片坏死。随着 pH 值的降低，地上部和根长、叶面积、生物量和叶绿素含量等参数均降低。然而，叶片中脯氨酸含量的积累随着酸度的增加而增加。总之，与芥菜和芥菜相比，芥菜对酸雨的抵抗力最强，特别是在三种十字花科植物中，其脯氨酸含量在 pH 3.0 时最高。
