A study on selected physiological parameters of plants grown under lithium supplementation.
A study on selected physiological parameters of plants grown under lithium supplementation.
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DOI：
10.1007/s12011-012-9435-4
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发表时间：
2012-12
影响因子：
3.9
通讯作者：
Szymanska, Maria
中科院分区：
文献类型：
--
作者：
Hawrylak-Nowak, Barbara;Kalinowska, Monika;Szymanska, Maria
向日葵和玉米植株暴露于营养液中锂浓度增加（0-50 mg Li dm−3）会引起生物量、叶面积和光合色素积累以及脂质过氧化水平的变化。施用最高锂剂量（50 mg Li dm−3）引起两种被测物种的茎部生物量显著减少，以及向日葵植物的坏死斑和叶面积减少。添加5 ~ 50 mg Li dm−3的营养液对向日葵植株叶绿素a、b和类胡萝卜素含量没有显著影响。然而，在玉米中，在最高使用锂浓度下，所有色素含量都显著降低。在50 mg Li dm−3的作用下，向日葵叶片和玉米根系细胞膜脂质过氧化水平显著升高，表明过量锂离子干扰了细胞膜完整性和促氧化特性。然而，在玉米中，5 mg Li dm−3的存在增加了茎部生物量和叶面积。金属含量分析表明，锂在向日葵和玉米芽中积累显著，且呈剂量依赖性，但在种间存在差异。向日葵植物积累的这种金属比玉米多得多。除50mg Li dm−3处理下向日葵植株钾含量显著增加外，锂处理下幼苗钾含量基本保持不变。这些结果表明，50 mg Li dm−3的锂对两种植物都有毒性，但毒性症状是物种特异性的。此外，锂对植物的影响是剂量依赖性的，其离子可以在高浓度（50 mg Li dm−3）下发挥毒性，或在低浓度（5 mg Li dm−3）下刺激生长。
Exposure of sunflower and maize plants to increasing concentrations of lithium (0–50 mg Li dm−3) in a nutrient solution induced changes in biomass, leaf area and photosynthetic pigment accumulation, as well as levels of lipid peroxidation. The highest applied lithium dose (50 mg Li dm−3) evoked a significant reduction in the shoot biomass for both examined species, as well as necrotic spots and a reduction of the leaf area in sunflower plants. An enrichment of a nutrient solution with 5–50 mg Li dm−3 did not significantly affect chlorophylls a and b and the carotenoid content in sunflower plants. However, in maize, a significant decrease in all pigment content under highest used lithium concentration was noted. The levels of lipid peroxidation of the cell membranes in leaves of sunflower plants and the roots of maize increased significantly in the presence of 50 mg Li dm−3, which suggests disturbances of the membrane integrity and pro-oxidant properties of the excess lithium ions. Nonetheless, in maize, an increase of shoot biomass and leaf area in the presence of 5 mg Li dm−3 was found. An analysis of the metal content indicated that lithium accumulated significantly in sunflower and maize shoots in a dose-dependent manner, but differences occurred between species. The sunflower plants accumulated considerably greater amounts of this metal than maize. The potassium content in shoots remained unchanged under lithium treatments, except for a significant increase in the potassium levels for sunflower plants grown in the presence of 50 mg Li dm−3. These results suggest that lithium at 50 mg Li dm−3 is toxic to both plant species, but the symptoms of toxicity are species-specific. Moreover, the lithium influence on plants is dose-dependent and its ions can exert toxicity at high concentrations (50 mg Li dm−3) or stimulate growth at low concentrations (5 mg Li dm−3).
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影响因子：
1.5
作者：
Zeller, S;Feller, U
通讯作者：
Feller, U
影响因子：
3.4
作者：
Khairova R;Pawar R;Salvadore G;Juruena MF;de Sousa RT;Soeiro-de-Souza MG;Salvador M;Zarate CA;Gattaz WF;Machado-Vieira R
通讯作者：
Machado-Vieira R
影响因子：
4.3
作者：
Naranjo, MA;Romero, C;Serrano, R
通讯作者：
Serrano, R
影响因子：
9.4
作者：
KENT, N. L.
通讯作者：
KENT, N. L.
影响因子：
5.2
作者：
Li, Xiang;Gao, Peng;Gruber, Margaret Y.
通讯作者：
Gruber, Margaret Y.