La3＋提高拟南芥耐旱能力研究  

Lanthanum Improves Drought Endurance in Arabidopsis Thaliana

作　　者：薛绍武[1] 胡婷 王建荣 杨频[1] 

机构地区：[1]化学生物学与分子工程教育部重点实验室,山西大学分子科学研究所,山西太原030006

出　　处：《中国稀土学报》2012年第6期750-754,共5页Journal of the Chinese Society of Rare Earths

基　　金：山西省自然科学基金(2012011006-4);山西省回国留学人员科研资助项目(2011-012);山西省留学人员科技活动择优资助

摘　　要：稀土元素有着广泛的生物学效应,稀土作为微肥在我国农业广泛使用。然而,稀土对植物抗旱性影响的研究很少。以模式植物拟南芥为材料,研究了不同浓度的镧(La3+)对植物根生长以及对植物耐旱能力的影响。结果表明,10和100μmol.L-1的La3+能显著促进根生长,提高植物耐旱能力;1μmol.L-1La3+没有明显促进根生长,但显著提高了植物耐旱能力;1和10 mmol.L-1的La3+不能促进根生长,同时还降低了植物耐旱能力。该结果提示,稀土农用过程中要重视剂量的使用,同时避免带来生态环境问题。Rare earth elements （REEs） have diverse biological effects on plants, and they have been used as micro-fertilizer in agriculture in China. Many stud- ies of biological effects of REEs have been performed previously, but the effect of REEs on drought endur- ance in plant of Arabidopsis thaliana has not been re- ported up to now. Effects of lanthanum on root growth and drought endurance in Arabidopsis plant were inves- tigated here. The results showed that lanthanum in a low concentration increased root elongation and im- proved Arabidopsis drought endurance. On the other hand, lanthanum in a high concentration decreased plant drought endurance and did not increase root e- longation. It hinted that more attention should be paid for the amounts of REEs usage in agriculture and avoi- ding the environmental pollution.

关 键 词：LACL3 拟南芥 耐旱 稀土 

分 类 号：O614.3[理学—无机化学]