Aims Beneficial elements may stimulate plant growth by favoring the availability of essential nutrients for metabolic processes. This study addresses the still unexplored question whether the beneficial action of selenium (Se) on plants can be due to its interaction with iron (Fe). Methods Oilseed rape (Brassica napus) plants were grown hydroponically without (-Se) or with 10 mu M Na2SeO4(+Se) and exposed to either Fe adequate (+Fe) or starvation (-Fe) treatments. Results Selenium enhanced leaf chlorophyll concentration, photochemical parameters and CO(2)fixation. Although Se did not significantly increase total leaf Fe concentration, the concentration of cytoplasmic Fe(II)pool was enhanced under -Fe + Se conditions. However, the most conspicuous Se effects occurred in Fe-deficient roots. Selenium upregulated both the root expression levels of genes encodingFERRIC-REDUCTION OXIDASE (FRO1)and the activity of FRO and exacerbated the stimulatory effect of -Fe on the exudation rate of orga...nic acids and phenolic compounds. Both -Se and + Se plants used Fe(III)EDTA in similar way, while only +Se plants were able to take advantage of the sparingly soluble Fe(OH)(3). In order to explore the mechanism of Se action, we recorded higher endogenous level of NO and upregulation ofETHYLENE RESPONSE FACTOR 2(ERF2) by Se irrespective of Fe conditions. Conclusions Our results show that Se augments root machinery for Fe acquisition mainly through activation of Fe signaling components.
TY - JOUR
AU - Hajiboland, Roghieh
AU - Sadeghzadeh, Noushin
AU - Bosnic, Dragana
AU - Bosnić, Predrag
AU - Tolra, Roser
AU - Poschenrieder, Charlotte
AU - Nikolic, Miroslav
PY - 2020
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1351
AB - Aims Beneficial elements may stimulate plant growth by favoring the availability of essential nutrients for metabolic processes. This study addresses the still unexplored question whether the beneficial action of selenium (Se) on plants can be due to its interaction with iron (Fe). Methods Oilseed rape (Brassica napus) plants were grown hydroponically without (-Se) or with 10 mu M Na2SeO4(+Se) and exposed to either Fe adequate (+Fe) or starvation (-Fe) treatments. Results Selenium enhanced leaf chlorophyll concentration, photochemical parameters and CO(2)fixation. Although Se did not significantly increase total leaf Fe concentration, the concentration of cytoplasmic Fe(II)pool was enhanced under -Fe + Se conditions. However, the most conspicuous Se effects occurred in Fe-deficient roots. Selenium upregulated both the root expression levels of genes encodingFERRIC-REDUCTION OXIDASE (FRO1)and the activity of FRO and exacerbated the stimulatory effect of -Fe on the exudation rate of organic acids and phenolic compounds. Both -Se and + Se plants used Fe(III)EDTA in similar way, while only +Se plants were able to take advantage of the sparingly soluble Fe(OH)(3). In order to explore the mechanism of Se action, we recorded higher endogenous level of NO and upregulation ofETHYLENE RESPONSE FACTOR 2(ERF2) by Se irrespective of Fe conditions. Conclusions Our results show that Se augments root machinery for Fe acquisition mainly through activation of Fe signaling components.
PB - Springer, Dordrecht
T2 - Plant and Soil
T1 - Selenium activates components of iron acquisition machinery in oilseed rape roots
EP - 586
IS - 1-2
SP - 569
VL - 452
DO - 10.1007/s11104-020-04599-w
ER -
@article{
author = "Hajiboland, Roghieh and Sadeghzadeh, Noushin and Bosnic, Dragana and Bosnić, Predrag and Tolra, Roser and Poschenrieder, Charlotte and Nikolic, Miroslav",
year = "2020",
abstract = "Aims Beneficial elements may stimulate plant growth by favoring the availability of essential nutrients for metabolic processes. This study addresses the still unexplored question whether the beneficial action of selenium (Se) on plants can be due to its interaction with iron (Fe). Methods Oilseed rape (Brassica napus) plants were grown hydroponically without (-Se) or with 10 mu M Na2SeO4(+Se) and exposed to either Fe adequate (+Fe) or starvation (-Fe) treatments. Results Selenium enhanced leaf chlorophyll concentration, photochemical parameters and CO(2)fixation. Although Se did not significantly increase total leaf Fe concentration, the concentration of cytoplasmic Fe(II)pool was enhanced under -Fe + Se conditions. However, the most conspicuous Se effects occurred in Fe-deficient roots. Selenium upregulated both the root expression levels of genes encodingFERRIC-REDUCTION OXIDASE (FRO1)and the activity of FRO and exacerbated the stimulatory effect of -Fe on the exudation rate of organic acids and phenolic compounds. Both -Se and + Se plants used Fe(III)EDTA in similar way, while only +Se plants were able to take advantage of the sparingly soluble Fe(OH)(3). In order to explore the mechanism of Se action, we recorded higher endogenous level of NO and upregulation ofETHYLENE RESPONSE FACTOR 2(ERF2) by Se irrespective of Fe conditions. Conclusions Our results show that Se augments root machinery for Fe acquisition mainly through activation of Fe signaling components.",
publisher = "Springer, Dordrecht",
journal = "Plant and Soil",
title = "Selenium activates components of iron acquisition machinery in oilseed rape roots",
pages = "586-569",
number = "1-2",
volume = "452",
doi = "10.1007/s11104-020-04599-w"
}
Hajiboland, R., Sadeghzadeh, N., Bosnic, D., Bosnić, P., Tolra, R., Poschenrieder, C.,& Nikolic, M.. (2020). Selenium activates components of iron acquisition machinery in oilseed rape roots. in Plant and Soil
Springer, Dordrecht., 452(1-2), 569-586.
https://doi.org/10.1007/s11104-020-04599-w
Hajiboland R, Sadeghzadeh N, Bosnic D, Bosnić P, Tolra R, Poschenrieder C, Nikolic M. Selenium activates components of iron acquisition machinery in oilseed rape roots. in Plant and Soil. 2020;452(1-2):569-586.
doi:10.1007/s11104-020-04599-w .
Hajiboland, Roghieh, Sadeghzadeh, Noushin, Bosnic, Dragana, Bosnić, Predrag, Tolra, Roser, Poschenrieder, Charlotte, Nikolic, Miroslav, "Selenium activates components of iron acquisition machinery in oilseed rape roots" in Plant and Soil, 452, no. 1-2 (2020):569-586,
https://doi.org/10.1007/s11104-020-04599-w . .
