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首页> 外文期刊>Journal of rare earths >Effect of Lanthanum on Plants under Supplementary Ultraviolet-B Radiation: Effect of Lanthanum on Flavonoid Contents in Soybean Seedlings Exposed to Supplementary Ultraviolet-B Radiation
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Effect of Lanthanum on Plants under Supplementary Ultraviolet-B Radiation: Effect of Lanthanum on Flavonoid Contents in Soybean Seedlings Exposed to Supplementary Ultraviolet-B Radiation

机译：镧对补充紫外线B辐射的植物的影响：镧对补充紫外线B辐射的大豆幼苗中类黄酮含量的影响

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摘要

The effect of La on flavonoids, chlorophyll contents, and phenylalanine ammonia-lyase (PAL) activity in soybean seedlings under supplementary ultraviolet-B radiation (UV-B, 280 ~ 320 nm) was studied. The results show that PAL activity, contents of flavonoids and chlorophyll in the plants pretreated with La (20 mg centre dot L~(-1)) are higher than those in CK. UV-B radiation could result in an increase in flavonoid content and PAL activity, associated with a decrease in chlorophyll content. However, the increase in the range of PAL activity and flavonoid content in UV-B treatment are lesser than those in the La treatment. The changes of flavonoid contents and PAL activity in La + UV-B treatment are similar to those in UV-B treatment, and the increase in their range is higher than those in UV-B treatment. This shows that La can enhance the resistance of soybean seedling to UV-B radiation and alleviate the damage of UV-B radiation by increasing flavonoid content, chlorophyll content, and PAL activity.
机译：研究了镧对补充紫外线-B（UV-B，280〜320 nm）大豆幼苗中类黄酮，叶绿素含量和苯丙氨酸解氨酶（PAL）活性的影响。结果表明，La（20 mg中心点L〜（-1））预处理的植物的PAL活性，类黄酮和叶绿素含量均高于CK。 UV-B辐射可能导致类黄酮含量和PAL活性增加，并导致叶绿素含量下降。然而，UV-B处理中PAL活性和类黄酮含量范围的增加小于La处理中的增加。 La + UV-B处理中类黄酮含量和PAL活性的变化与UV-B处理中相似，并且其范围的增加高于UV-B处理中的变化。这表明La可以通过增加类黄酮含量，叶绿素含量和PAL活性来增强大豆幼苗对UV-B辐射的抵抗力，并减轻UV-B辐射的损害。

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