Effects of lanthanum on abscisic acid regulation of root growth in Arabidopsis
来源期刊：JOURNAL OF RARE EARTHS2014年第1期
论文作者：王建荣 王蕾 胡婷 李文超 薛绍武
文章页码：78 - 82
摘 要：Rare earth elements（REEs） were reported to have adverse biology effects on plant growth and production. However, whether REEs are involved in plant hormone abscisic acid signal is not clear. Here we reported that REE lanthanum（La） interacted with abscisic acid（ABA） in the regulation of seed germination and root growth in model plant Arabidopsis. La3+at a concentration of 10 μmol/L alleviated ABA depression of seed germination and reversed ABA inhibition of root elongation growth in Arabidopsis. Previous studies showed that ABA could promote root hair development. In the present study, La3+inhibited root hair development promoted by ABA. Moreover, La3+inhibited H2 O2 generation induced by ABA in root cells. Therefore we inferred that La3+might interact with ABA upstream of H2 O2 generation.
王建荣1，王蕾1，胡婷1，李文超2，薛绍武3
1. Institute of Molecular Science, Shanxi University2. Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University3. College of Life Science and Technology, Huazhong Agricultural University
摘 要：Rare earth elements（REEs） were reported to have adverse biology effects on plant growth and production. However, whether REEs are involved in plant hormone abscisic acid signal is not clear. Here we reported that REE lanthanum（La） interacted with abscisic acid（ABA） in the regulation of seed germination and root growth in model plant Arabidopsis. La3+at a concentration of 10 μmol/L alleviated ABA depression of seed germination and reversed ABA inhibition of root elongation growth in Arabidopsis. Previous studies showed that ABA could promote root hair development. In the present study, La3+inhibited root hair development promoted by ABA. Moreover, La3+inhibited H2 O2 generation induced by ABA in root cells. Therefore we inferred that La3+might interact with ABA upstream of H2 O2 generation.
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