TY  - CONF
AU  - Pavlović, Jelena
AU  - Hernandez-Apaolaza, Lourdes
AU  - Dubljanin, Tijana
AU  - Nikolic, Miroslav
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2134
AB  - Zinc (Zn), an essential micronutrient for crops, is involved in a variety of physiological processes. The Zn deficiency mainly affects generative growth and seed development and being a component of the antioxidant machinery (e.g., Cu/Zn-SOD) is conductive to oxidative stress in plant tissues. Rice is a typical silicon (Si)-accumulating species, which is strongly affected by Zn deficiency in the alkaline, low Zn soils, especially high in phosphate and/or organic matter. Yet, little is known about the interaction between Si and Zn in rice plants under Zn-deficient conditions. We investigated the effect of Si nutrition on Zn tissue distribution and biosynthesis of organic acid in rice plants subjected to short-term (up to 7 days) and long-term (28 days) Zn deficiency. Tissue concentrations of organic acids by HPLC in parallel Zn and Si by ICP-OES were measured. The Si addition to the nutrient solution successfully mitigated visual symptoms of Zn-deficiency stress and significantly increased dry biomass of rice plants. Interestingly, during the short-term experiment, +Zn plants supplied with Si showed significantly lower Zn concentration in the shoots, but significantly higher Zn concentration in the roots. Also, in the -Zn plants supplied with Si, the concentration of Zn in root tissue rapidly decreased to the level of -Si/-Zn plants, which was followed by an increased concentrations of both organic acids and Zn in the shoots. In the long-term experiment, however, Si did not affect Zn concentration in roots nor in shoots of -Zn plants, but Si differently affected organic acid profile and their tissue accumulation depending on the plant organ and Zn status. In conclusion, Si supply enhanced root-to-shoot translocation of Zn mediated by organic acid ligands during the first 7 days of Zn deficiency.
PB  - ISSAG and AgCenter LSU
C3  - 8th International Conference on Silicon in Agriculture, May 23-26, 2022, New Orleans, LA, USA
T1  - Silicon Enhances the Biosynthesis of Organic Acids in Zinc-deficient Rice
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2134
ER  - 

@conference{
author = "Pavlović, Jelena and Hernandez-Apaolaza, Lourdes and Dubljanin, Tijana and Nikolic, Miroslav",
year = "2022",
abstract = "Zinc (Zn), an essential micronutrient for crops, is involved in a variety of physiological processes. The Zn deficiency mainly affects generative growth and seed development and being a component of the antioxidant machinery (e.g., Cu/Zn-SOD) is conductive to oxidative stress in plant tissues. Rice is a typical silicon (Si)-accumulating species, which is strongly affected by Zn deficiency in the alkaline, low Zn soils, especially high in phosphate and/or organic matter. Yet, little is known about the interaction between Si and Zn in rice plants under Zn-deficient conditions. We investigated the effect of Si nutrition on Zn tissue distribution and biosynthesis of organic acid in rice plants subjected to short-term (up to 7 days) and long-term (28 days) Zn deficiency. Tissue concentrations of organic acids by HPLC in parallel Zn and Si by ICP-OES were measured. The Si addition to the nutrient solution successfully mitigated visual symptoms of Zn-deficiency stress and significantly increased dry biomass of rice plants. Interestingly, during the short-term experiment, +Zn plants supplied with Si showed significantly lower Zn concentration in the shoots, but significantly higher Zn concentration in the roots. Also, in the -Zn plants supplied with Si, the concentration of Zn in root tissue rapidly decreased to the level of -Si/-Zn plants, which was followed by an increased concentrations of both organic acids and Zn in the shoots. In the long-term experiment, however, Si did not affect Zn concentration in roots nor in shoots of -Zn plants, but Si differently affected organic acid profile and their tissue accumulation depending on the plant organ and Zn status. In conclusion, Si supply enhanced root-to-shoot translocation of Zn mediated by organic acid ligands during the first 7 days of Zn deficiency.",
publisher = "ISSAG and AgCenter LSU",
journal = "8th International Conference on Silicon in Agriculture, May 23-26, 2022, New Orleans, LA, USA",
title = "Silicon Enhances the Biosynthesis of Organic Acids in Zinc-deficient Rice",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2134"
}

Pavlović, J., Hernandez-Apaolaza, L., Dubljanin, T.,& Nikolic, M.. (2022). Silicon Enhances the Biosynthesis of Organic Acids in Zinc-deficient Rice. in 8th International Conference on Silicon in Agriculture, May 23-26, 2022, New Orleans, LA, USA
ISSAG and AgCenter LSU..
https://hdl.handle.net/21.15107/rcub_rimsi_2134

Pavlović J, Hernandez-Apaolaza L, Dubljanin T, Nikolic M. Silicon Enhances the Biosynthesis of Organic Acids in Zinc-deficient Rice. in 8th International Conference on Silicon in Agriculture, May 23-26, 2022, New Orleans, LA, USA. 2022;.
https://hdl.handle.net/21.15107/rcub_rimsi_2134 .

Pavlović, Jelena, Hernandez-Apaolaza, Lourdes, Dubljanin, Tijana, Nikolic, Miroslav, "Silicon Enhances the Biosynthesis of Organic Acids in Zinc-deficient Rice" in 8th International Conference on Silicon in Agriculture, May 23-26, 2022, New Orleans, LA, USA (2022),
https://hdl.handle.net/21.15107/rcub_rimsi_2134 .