The influence of two lithium forms on the growth, L-ascorbic acid content and lithium accumulation in lettuce plants.
The influence of two lithium forms on the growth, L-ascorbic acid content and lithium accumulation in lettuce plants.
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DOI：
10.1007/s12011-013-9606-y
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发表时间：
2013-05
影响因子：
3.9
通讯作者：
Szymanska, Maria
中科院分区：
文献类型：
--
作者：
Kalinowska, Monika;Hawrylak-Nowak, Barbara;Szymanska, Maria
锂 (Li) 是人类饮食中必需的微量元素，因为它对有机体的健康和正常功能很重要。然而，人们对这种金属在农作物（锂的主要膳食来源）中的生物活性仍知之甚少。本研究的目的是比较分析两种锂化学形态对毛头生菜（Lactuca sativa L. var.capitala）生长的影响，以及 L-抗坏血酸含量、锂积累和易位。贾斯蒂娜。这些植物生长在富含 LiCl 或 LiOH 形式的 Li 的营养液中，浓度如下：0、2.5、20、50 或 100 mg Li dm−3。所得结果表明，如果营养液中的 Li 浓度达到 20 mg Li dm−3，则根部环境中 Li+ 离子的存在会降低生菜可食用部分的产量。然而，发现只有 LiOH 在这些条件下产率下降才显着。在暴露于 50 mgLi dm−3 的植物中，无论提供的锂化学形式如何，茎和根的鲜重 (FW) 均显着下降。另一方面，在最低 LiOH 剂量下，根部 FW 显着增加，表明 Li 对生菜植物的生长有有益作用。然而，施加的锂浓度和形式并不影响生菜叶中L-抗坏血酸的含量。无论采用哪种锂形式，锂主要积累在根组织中。一个例外是，在供应 100 mg Li dm−3 的 LiCl 的植物中，芽中这种金属的浓度高于根部，并且在供应 100 mg Li dm−3 的 LiOH 的植物的两个检查器官中，Li 浓度几乎相同。随着生长介质中锂浓度的增加，锂从根到芽的易位有效性提高，这表明这种金属在整个植物中的易位相对容易。此外，这些结果表明，生菜植物中锂的毒性与该元素在根和芽组织中的高积累有关，在存在氯化锂或氢氧化锂的情况下，导致产量急剧下降，但不影响叶子中L-抗坏血酸的积累。
Lithium (Li) is a trace element that is essential in the human diet due to its importance for health and proper functioning of an organism. However, the biological activity of this metal in crop plants, which are the primary dietary sources of Li, is still poorly understood. The aim of the presented study was to comparatively analyse two Li chemical forms on the growth, as well as the l-ascorbic acid content, the Li accumulation and translocation in butterhead lettuce (Lactuca sativa L. var. capitata) cv. Justyna. The plants were grown in a nutrient solution enriched with Li in the form of LiCl or LiOH at the following concentrations: 0, 2.5, 20, 50 or 100 mg Li dm−3. The obtained results indicate that the presence of Li+ ions in the root environment reduced the yield of edible parts of the lettuce if the Li concentration in a nutrient solution had reached 20 mg Li dm−3. However, a yield reduction under these conditions was found to be significant only for LiOH. In plants exposed to 50 mg Li dm−3, both shoot and root fresh weights (FW) significantly decreased, regardless of the supplied Li chemical form. On the other hand, under the lowest LiOH dose, a significant increase in the root FW was noted, suggesting beneficial effects of Li on the growth of lettuce plants. However, applied Li concentrations and forms did not affect the l-ascorbic acid content in the lettuce leaves. Regardless of which Li form was used, Li accumulated mainly in the root tissues. An exception was the higher concentration of this metal in the shoots than in the roots of plants supplied with 100 mg Li dm−3 in LiCl, and there were almost the same Li concentrations in both examined organs of plants supplied with 100 mg Li dm−3 in LiOH. The effectiveness of Li translocation from roots to shoots rose with increasing Li concentrations in the growth medium, and this suggests a relatively ready translocation of this metal throughout the plant. Moreover, these results suggest that Li toxicity in lettuce plants is related to a high accumulation of this element in the root and shoot tissues, causing a drastic reduction in the yield, in the presence either of LiCl or LiOH, but not affecting the l-ascorbic acid accumulation in the leaves.
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影响因子：
4.3
作者：
Naranjo, MA;Romero, C;Serrano, R
通讯作者：
Serrano, R
影响因子：
4.3
作者：
Eraslan, F.;Inal, A.;Gunes, A.
通讯作者：
Gunes, A.
影响因子：
5.2
作者：
Li, Xiang;Gao, Peng;Gruber, Margaret Y.
通讯作者：
Gruber, Margaret Y.
影响因子：
3.9
作者：
Hawrylak-Nowak, Barbara;Kalinowska, Monika;Szymanska, Maria
通讯作者：
Szymanska, Maria
影响因子：
--
作者：
ZONIA, LE;TUPY, J
通讯作者：
TUPY, J