caa a22 4500 606209247 CHVBK 20210128101027.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00425-014-2227-7 doi (NATIONALLICENCE)springer-10.1007/s00425-014-2227-7 Uptake kinetics and translocation of selenite and selenate as affected by iron plaque on root surfaces of rice seedlings [Elektronische Daten] [Qingqing Huang, Yao Yu, Qi Wang, Zhang Luo, Rongfeng Jiang, Huafen Li] Main conclusion : Iron plaque on root surfaces greatly influenced selenium uptake and played different roles in selenite and selenate uptake. Iron plaque commonly forms on rice root surfaces under flooded conditions, but little is known about the relationship between iron plaque and selenium (Se) accumulation. Here, we investigate the effects of iron plaque on Se uptake by and translocation within rice (Oryza sativa) seedlings, and the kinetics of selenite and selenate influx into rice roots (with or without iron plaque) were determined in short-term (30min) experiments. Rice seedlings were planted in nutrient solutions containing different levels of ferrous ion for 3days and then transplanted into nutrient solutions with selenite or selenate. Se concentrations in iron plaque were positively associated with the amounts of iron plaque in both selenite and selenate treatments and iron plaque had a higher affinity for selenite than selenate. Results showed that iron plaque on root surfaces greatly influenced Se uptake and played different roles in selenite and selenate uptake. The selenite and selenate uptake kinetics results demonstrated that the presence of iron plaque enhanced selenite uptake, but decreased selenate uptake. In addition, root-Se concentrations increased with the increasing amounts of iron plaque, but Se translocation from roots to shoots was reduced with the increasing amounts of iron plaque in the +selenite treatment. Iron plaque significantly influenced selenite uptake and might act as a pool to selenite accumulation in rice plants. However, iron plaque had no significant effect on selenate uptake or even as a barrier to selenate uptake. Springer-Verlag Berlin Heidelberg, 2014 Iron plaque nationallicence Selenite nationallicence Selenate nationallicence Rice nationallicence Uptake nationallicence Translocation nationallicence DCB : Dithionite citrate bicarbonate nationallicence AFS : Atomic fluorescence spectrometer nationallicence ICP-AES : Inductively coupled plasma atomic emission spectrometer nationallicence ICP-MS : Inductively coupled plasma mass spectroscopy nationallicence TF : Transfer factor nationallicence Huang Qingqing Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Yu Yao Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Wang Qi Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Luo Zhang Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Jiang Rongfeng Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Li Huafen Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut Planta Springer Berlin Heidelberg 241/4(2015-04-01), 907-916 0032-0935 241:4<907 2015 241 425 https://doi.org/10.1007/s00425-014-2227-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00425-014-2227-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Qingqing Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Yu Yao Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Wang Qi Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Luo Zhang Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Jiang Rongfeng Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Li Huafen Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Planta Springer Berlin Heidelberg 241/4(2015-04-01), 907-916 0032-0935 241:4<907 2015 241 425