TY  - JOUR
AU  - Ćosić, Tatjana
AU  - Motyka, Václav
AU  - Savić, Jelena
AU  - Raspor, Martin
AU  - Marković, Marija
AU  - Dobrev, Petre I.
AU  - Ninković, Slavica
PY  - 2021
UR  - https://www.nature.com/articles/s41598-021-85932-w
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4194
AB  - Cross-talk between phytohormones and sugars is intensely involved in plant metabolism, growth and regeneration. We documented alterations in cytokinin (CK) homeostasis in four developmental stages during de novo shoot organogenesis (DNSO) of kohlrabi ( Brassica oleracea var. gongylodes cv. Vienna Purple) seedlings induced by exogenous CKs, trans -zeatin ( trans Z) and thidiazuron (TDZ), added together with elevated sucrose concentration (6% and 9%). Significant impact of CK and sucrose treatment and their interaction was recorded in all investigated stages, including plantlet development before calli formation (T1 and T2), calli formation (T3) and shoot regeneration (T4). Results showed remarkable increase in total CK levels for trans Z treatment, particularly with 9% sucrose. This trend was observed for all physiological and structural groups of CKs. Application of TDZ contributed to little or no increase in CK levels regardless of sucrose concentration. Analysis of expression profiles of organogenesis-related genes involved in auxin transport, CK response, shoot apical meristem formation and cell division revealed that higher sugar concentration significantly downregulated the analysed genes, particularly in T3. This continued on TDZ, but trans Z induced an opposite effect with 9% sucrose in T4, increasing gene activity. Our results demonstrated that phytohormone metabolism might be triggered by sucrose signalling in kohlrabi DNSO.
PB  - Springer Science and Business Media LLC
T2  - Scientific Reports
T1  - Sucrose interferes with endogenous cytokinin homeostasis and expression of organogenesis-related genes during de novo shoot organogenesis in kohlrabi
IS  - 1
VL  - 11
DO  - 10.1038/s41598-021-85932-w
SP  - 6494
ER  - 

@article{
author = "Ćosić, Tatjana and Motyka, Václav and Savić, Jelena and Raspor, Martin and Marković, Marija and Dobrev, Petre I. and Ninković, Slavica",
year = "2021",
abstract = "Cross-talk between phytohormones and sugars is intensely involved in plant metabolism, growth and regeneration. We documented alterations in cytokinin (CK) homeostasis in four developmental stages during de novo shoot organogenesis (DNSO) of kohlrabi ( Brassica oleracea var. gongylodes cv. Vienna Purple) seedlings induced by exogenous CKs, trans -zeatin ( trans Z) and thidiazuron (TDZ), added together with elevated sucrose concentration (6% and 9%). Significant impact of CK and sucrose treatment and their interaction was recorded in all investigated stages, including plantlet development before calli formation (T1 and T2), calli formation (T3) and shoot regeneration (T4). Results showed remarkable increase in total CK levels for trans Z treatment, particularly with 9% sucrose. This trend was observed for all physiological and structural groups of CKs. Application of TDZ contributed to little or no increase in CK levels regardless of sucrose concentration. Analysis of expression profiles of organogenesis-related genes involved in auxin transport, CK response, shoot apical meristem formation and cell division revealed that higher sugar concentration significantly downregulated the analysed genes, particularly in T3. This continued on TDZ, but trans Z induced an opposite effect with 9% sucrose in T4, increasing gene activity. Our results demonstrated that phytohormone metabolism might be triggered by sucrose signalling in kohlrabi DNSO.",
publisher = "Springer Science and Business Media LLC",
journal = "Scientific Reports",
title = "Sucrose interferes with endogenous cytokinin homeostasis and expression of organogenesis-related genes during de novo shoot organogenesis in kohlrabi",
number = "1",
volume = "11",
doi = "10.1038/s41598-021-85932-w",
pages = "6494"
}

Ćosić, T., Motyka, V., Savić, J., Raspor, M., Marković, M., Dobrev, P. I.,& Ninković, S.. (2021). Sucrose interferes with endogenous cytokinin homeostasis and expression of organogenesis-related genes during de novo shoot organogenesis in kohlrabi. in Scientific Reports
Springer Science and Business Media LLC., 11(1), 6494.
https://doi.org/10.1038/s41598-021-85932-w

Ćosić T, Motyka V, Savić J, Raspor M, Marković M, Dobrev PI, Ninković S. Sucrose interferes with endogenous cytokinin homeostasis and expression of organogenesis-related genes during de novo shoot organogenesis in kohlrabi. in Scientific Reports. 2021;11(1):6494.
doi:10.1038/s41598-021-85932-w .

Ćosić, Tatjana, Motyka, Václav, Savić, Jelena, Raspor, Martin, Marković, Marija, Dobrev, Petre I., Ninković, Slavica, "Sucrose interferes with endogenous cytokinin homeostasis and expression of organogenesis-related genes during de novo shoot organogenesis in kohlrabi" in Scientific Reports, 11, no. 1 (2021):6494,
https://doi.org/10.1038/s41598-021-85932-w . .

TY  - JOUR
AU  - Trifunović-Momčilov, Milana
AU  - Motyka, Václav
AU  - Dobrev, Petre I.
AU  - Marković, Marija
AU  - Milošević, Snežana
AU  - Jevremović, Slađana
AU  - Dragićević, Ivana Č.
AU  - Subotić, Angelina
PY  - 2021
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4649
AB  - Plant hormones regulate numerous developmental and physiological processes. Abiotic stresses
considerably affect production and distribution of phytohormones as the stress signal triggers. The
homeostasis of plant hormones is controlled by their de novo synthesis and catabolism. The aim of this
work was to analyse the contents of total and individual groups of endogenous cytokinins (CKs) as well
as indole-3-acetic acid (IAA) in AtCKX overexpressing centaury plants grown in vitro on graded NaCl
concentrations (0, 50, 100, 150, 200 mM). The levels of endogenous stress hormones including abscisic
acid (ABA), salicylic acid (SA) and jasmonic acid (JA) were also detected. The elevated contents of total
CKs were found in all analysed centaury shoots. Furthermore, increased amounts of all five CK groups,
as well as enhanced total CKs were revealed on graded NaCl concentrations in non-transformed and
AtCKX roots. All analysed AtCKX centaury lines exhibited decreased amounts of endogenous IAA
in shoots and roots. Consequently, the IAA/bioactive CK forms ratios showed a significant variation
in the shoots and roots of all AtCKX lines. In shoots and roots of both non-transformed and AtCKX
transgenic centaury plants, salinity was associated with an increase of ABA and JA and a decrease of
SA content.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Phytohormone profiles in non‑transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro
VL  - 11
DO  - 10.1038/s41598-021-00866-7
SP  - 21471
ER  - 

@article{
author = "Trifunović-Momčilov, Milana and Motyka, Václav and Dobrev, Petre I. and Marković, Marija and Milošević, Snežana and Jevremović, Slađana and Dragićević, Ivana Č. and Subotić, Angelina",
year = "2021",
abstract = "Plant hormones regulate numerous developmental and physiological processes. Abiotic stresses
considerably affect production and distribution of phytohormones as the stress signal triggers. The
homeostasis of plant hormones is controlled by their de novo synthesis and catabolism. The aim of this
work was to analyse the contents of total and individual groups of endogenous cytokinins (CKs) as well
as indole-3-acetic acid (IAA) in AtCKX overexpressing centaury plants grown in vitro on graded NaCl
concentrations (0, 50, 100, 150, 200 mM). The levels of endogenous stress hormones including abscisic
acid (ABA), salicylic acid (SA) and jasmonic acid (JA) were also detected. The elevated contents of total
CKs were found in all analysed centaury shoots. Furthermore, increased amounts of all five CK groups,
as well as enhanced total CKs were revealed on graded NaCl concentrations in non-transformed and
AtCKX roots. All analysed AtCKX centaury lines exhibited decreased amounts of endogenous IAA
in shoots and roots. Consequently, the IAA/bioactive CK forms ratios showed a significant variation
in the shoots and roots of all AtCKX lines. In shoots and roots of both non-transformed and AtCKX
transgenic centaury plants, salinity was associated with an increase of ABA and JA and a decrease of
SA content.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Phytohormone profiles in non‑transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro",
volume = "11",
doi = "10.1038/s41598-021-00866-7",
pages = "21471"
}

Trifunović-Momčilov, M., Motyka, V., Dobrev, P. I., Marković, M., Milošević, S., Jevremović, S., Dragićević, I. Č.,& Subotić, A.. (2021). Phytohormone profiles in non‑transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro. in Scientific Reports
Springer Nature., 11, 21471.
https://doi.org/10.1038/s41598-021-00866-7

Trifunović-Momčilov M, Motyka V, Dobrev PI, Marković M, Milošević S, Jevremović S, Dragićević IČ, Subotić A. Phytohormone profiles in non‑transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro. in Scientific Reports. 2021;11:21471.
doi:10.1038/s41598-021-00866-7 .

Trifunović-Momčilov, Milana, Motyka, Václav, Dobrev, Petre I., Marković, Marija, Milošević, Snežana, Jevremović, Slađana, Dragićević, Ivana Č., Subotić, Angelina, "Phytohormone profiles in non‑transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro" in Scientific Reports, 11 (2021):21471,
https://doi.org/10.1038/s41598-021-00866-7 . .