Cadmium-induced stress on the seed germination and seedling growth of Brassica napus L., and its alleviation through exogenous plant growth regulators
Cadmium-induced stress on the seed germination and seedling growth of Brassica napus L., and its alleviation through exogenous plant growth regulators
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镉对甘蓝型油菜种子萌发和幼苗生长的胁迫及其通过外源植物生长调节剂的缓解
DOI：
10.1007/s10725-008-9351-y
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发表时间：
2009-05
影响因子：
4.2
通讯作者：
蒋立希
中科院分区：
文献类型：
--
作者：
蒋立希
油菜（Brassica napus L.）可以有利地生长用于被工业废物污染的土地的植物修复。因此，本文研究了镉对油菜种子萌发的毒害效应、植物对镉的吸收能力以及外源植物生长调节剂对缓解镉毒害的影响。为了在早期阶段进行幼苗的实验室研究，将种子生长在用不同Cd 2+溶液（0、10、50、100、200和400 μM）浸泡的滤纸上。在温室研究中，幼苗在土壤中生长8周，转移到水培盆中再生长6周，然后用植物生长调节剂和镉处理。4种植物生长调节剂：茉莉酸（12.5 μM）、脱落酸（10 μM）、赤霉素（50 μ M）和水杨酸（50 μ M）;结果表明，低浓度（10 μM）的Cd 2+胁迫促进了根的生长，而高浓度（200或400 μM）的Cd 2+胁迫则抑制了幼苗的萌发。 在含100 μM Cd ~（2+）的培养基中，施用脱落酸可显著降低植株体内镉的积累。
Because of its prolific growth, oilseed rape (Brassica napus L.) can be grown advantageously for phytoremediation of the lands contaminated by industrial wastes. Therefore, toxic effect of cadmium on the germination of oilseed rape, the capability of plants for cadmium phytoextraction, and the effect of exogenous application of plant growth regulators to mitigate phytotoxicity of cadmium were investigated. For the lab study of seedlings at early stage, seeds were grown on filter papers soaked in different solutions of Cd2+ (0, 10, 50, 100, 200 and 400 μM). In greenhouse study, seedlings were grown in soil for 8 weeks, transferred to hydroponic pots for another 6 weeks growth, and then treated with plant growth regulators and cadmium. Four plant growth regulators viz. jasmonic acid (12.5 μM), abscisic acid (10 μM), gibberellin (50 μM) and salicylic acid (50 μM); and three levels of Cd2+ (0, 50 and 100 μM) were applied. Data indicated that lower concentration of Cd2+ (10 μM) promoted the root growth, whereas the severe stresses (200 or 400 μM) had negative effect on the establishment of germinating seedlings. The application of abscisic acid to the plants cultivated in the medium containing 100 μM Cd2+ resulted in significantly lower plant internal cadmium accumulation.
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影响因子：
--
作者：
K. Asada
通讯作者：
K. Asada
影响因子：
0.6
作者：
T. Janda;G. Szalai;Z. Antunovics;E. Horváth;E. Páldi
通讯作者：
T. Janda;G. Szalai;Z. Antunovics;E. Horváth;E. Páldi
影响因子：
0.7
作者：
Battal, Peyami;Erez, Mehmet E.;Berber, Ismet
通讯作者：
Berber, Ismet
影响因子：
1
作者：
P. M. Swamy;B. N. Smith
通讯作者：
P. M. Swamy;B. N. Smith
影响因子：
4.2
作者：
Hui-fang Yin;Qiuming Chen;M. Yi
通讯作者：
Hui-fang Yin;Qiuming Chen;M. Yi