TY  - JOUR
AU  - Mitrović, Aleksandra Lj.
AU  - Donaldson, Lloyd
AU  - Đikanović, Daniela
AU  - Bogdanović Pristov, Jelena
AU  - Simonović Radosavljević, Jasna
AU  - Mutavdžić, Dragosav
AU  - Kalauzi, Aleksandar
AU  - Maksimović, Vuk
AU  - Nanayakkara, Bernadette
AU  - Radotić, Ksenija
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/880
AB  - Young P. omorika trees subjected to static bending showed a severe compression wood response as characterized by fluorescence spectroscopy/microscopy, which decreased in severity with height correlated with a decrease in bending moment. This investigation is aimed at understanding the reaction wood response in a slow-growing conifer species under conditions of severe and long-term bending stress. Compression wood (CW) formation was studied in stems of juvenile P. omorika after trees were subjected to static bending by wiring at an angle of about 90 degrees, for 1 year. The applied static bending would correspond to the impact of winter snow loads or snow falls on juvenile conifers. Stem sections were collected during one growing season and examined by fluorescence microscopy, and fluorescence spectroscopy including deconvolution analysis. Trees exposed to bending produced large amounts of severe CW but very low amounts of opposite wood (OW) during the experimental season indicating a dramatic change in biomass distribution compared to control trees. Indicators of cell wall structure changes, such as fluorescence emission spectra, peak intensities, and shifts in the positions of the long-wavelength spectral components, decreased from the stem base to the top of the stem, in line with a calculated decrease in bending moment.
PB  - Springer Heidelberg, Heidelberg
T2  - Trees-Structure and Function
T1  - Analysis of static bending-induced compression wood formation in juvenile Picea omorika (Pancic) Purkyne
EP  - 1543
IS  - 5
SP  - 1533
VL  - 29
DO  - 10.1007/s00468-015-1234-z
ER  - 

@article{
author = "Mitrović, Aleksandra Lj. and Donaldson, Lloyd and Đikanović, Daniela and Bogdanović Pristov, Jelena and Simonović Radosavljević, Jasna and Mutavdžić, Dragosav and Kalauzi, Aleksandar and Maksimović, Vuk and Nanayakkara, Bernadette and Radotić, Ksenija",
year = "2015",
abstract = "Young P. omorika trees subjected to static bending showed a severe compression wood response as characterized by fluorescence spectroscopy/microscopy, which decreased in severity with height correlated with a decrease in bending moment. This investigation is aimed at understanding the reaction wood response in a slow-growing conifer species under conditions of severe and long-term bending stress. Compression wood (CW) formation was studied in stems of juvenile P. omorika after trees were subjected to static bending by wiring at an angle of about 90 degrees, for 1 year. The applied static bending would correspond to the impact of winter snow loads or snow falls on juvenile conifers. Stem sections were collected during one growing season and examined by fluorescence microscopy, and fluorescence spectroscopy including deconvolution analysis. Trees exposed to bending produced large amounts of severe CW but very low amounts of opposite wood (OW) during the experimental season indicating a dramatic change in biomass distribution compared to control trees. Indicators of cell wall structure changes, such as fluorescence emission spectra, peak intensities, and shifts in the positions of the long-wavelength spectral components, decreased from the stem base to the top of the stem, in line with a calculated decrease in bending moment.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Trees-Structure and Function",
title = "Analysis of static bending-induced compression wood formation in juvenile Picea omorika (Pancic) Purkyne",
pages = "1543-1533",
number = "5",
volume = "29",
doi = "10.1007/s00468-015-1234-z"
}

Mitrović, A. Lj., Donaldson, L., Đikanović, D., Bogdanović Pristov, J., Simonović Radosavljević, J., Mutavdžić, D., Kalauzi, A., Maksimović, V., Nanayakkara, B.,& Radotić, K.. (2015). Analysis of static bending-induced compression wood formation in juvenile Picea omorika (Pancic) Purkyne. in Trees-Structure and Function
Springer Heidelberg, Heidelberg., 29(5), 1533-1543.
https://doi.org/10.1007/s00468-015-1234-z

Mitrović AL, Donaldson L, Đikanović D, Bogdanović Pristov J, Simonović Radosavljević J, Mutavdžić D, Kalauzi A, Maksimović V, Nanayakkara B, Radotić K. Analysis of static bending-induced compression wood formation in juvenile Picea omorika (Pancic) Purkyne. in Trees-Structure and Function. 2015;29(5):1533-1543.
doi:10.1007/s00468-015-1234-z .

Mitrović, Aleksandra Lj., Donaldson, Lloyd, Đikanović, Daniela, Bogdanović Pristov, Jelena, Simonović Radosavljević, Jasna, Mutavdžić, Dragosav, Kalauzi, Aleksandar, Maksimović, Vuk, Nanayakkara, Bernadette, Radotić, Ksenija, "Analysis of static bending-induced compression wood formation in juvenile Picea omorika (Pancic) Purkyne" in Trees-Structure and Function, 29, no. 5 (2015):1533-1543,
https://doi.org/10.1007/s00468-015-1234-z . .

TY  - JOUR
AU  - Donaldson, Lloyd
AU  - Nanayakkara, Bernadette
AU  - Radotić, Ksenija
AU  - Đikanović, Daniela
AU  - Mitrović, Aleksandra Lj.
AU  - Bogdanović Pristov, Jelena
AU  - Simonović Radosavljević, Jasna
AU  - Kalauzi, Aleksandar
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/844
AB  - Cell wall fluorescence and immunocytochemistry demonstrate that xylem parenchyma cell walls do not show changes in structure and composition related to gravitropic response comparable to those of tracheids, even when they have lignified secondary cell walls. Tracheid cell walls in compression wood have altered composition and structure which generates the strain responsible for correction of stem lean as part of the gravitropic response of woody plants. Xylem parenchyma cell walls vary among conifer species and can be lignified secondary walls (spruce) or unlignified primary walls (pine). It can be expected that xylem parenchyma with lignified secondary cell walls might show features of compression wood comparable to those of tracheids that have a similar type of cell wall. A comparison of xylem parenchyma cell walls in normal and compression wood in species with lignified and non-lignified parenchyma cell walls provides a unique opportunity to understand the process of reaction wood formation in conifers. Using both UV/visible fluorescence microscopy of cell wall fluorophores and immunocytochemistry of galactan and mannan epitopes, we demonstrate that xylem parenchyma cell walls do not show the changes in composition and structure typical of compression wood tracheids. Adjacent cells of different types but with similar cell wall structure can undergo cell wall developmental changes related to support or defence functions independent of their neighbours. Tracheids are sensitive to gravitropic signals while xylem parenchyma cells are not.
PB  - Springer, New York
T2  - Planta
T1  - Xylem parenchyma cell walls lack a gravitropic response in conifer compression wood
EP  - 1424
IS  - 6
SP  - 1413
VL  - 242
DO  - 10.1007/s00425-015-2381-6
ER  - 

@article{
author = "Donaldson, Lloyd and Nanayakkara, Bernadette and Radotić, Ksenija and Đikanović, Daniela and Mitrović, Aleksandra Lj. and Bogdanović Pristov, Jelena and Simonović Radosavljević, Jasna and Kalauzi, Aleksandar",
year = "2015",
abstract = "Cell wall fluorescence and immunocytochemistry demonstrate that xylem parenchyma cell walls do not show changes in structure and composition related to gravitropic response comparable to those of tracheids, even when they have lignified secondary cell walls. Tracheid cell walls in compression wood have altered composition and structure which generates the strain responsible for correction of stem lean as part of the gravitropic response of woody plants. Xylem parenchyma cell walls vary among conifer species and can be lignified secondary walls (spruce) or unlignified primary walls (pine). It can be expected that xylem parenchyma with lignified secondary cell walls might show features of compression wood comparable to those of tracheids that have a similar type of cell wall. A comparison of xylem parenchyma cell walls in normal and compression wood in species with lignified and non-lignified parenchyma cell walls provides a unique opportunity to understand the process of reaction wood formation in conifers. Using both UV/visible fluorescence microscopy of cell wall fluorophores and immunocytochemistry of galactan and mannan epitopes, we demonstrate that xylem parenchyma cell walls do not show the changes in composition and structure typical of compression wood tracheids. Adjacent cells of different types but with similar cell wall structure can undergo cell wall developmental changes related to support or defence functions independent of their neighbours. Tracheids are sensitive to gravitropic signals while xylem parenchyma cells are not.",
publisher = "Springer, New York",
journal = "Planta",
title = "Xylem parenchyma cell walls lack a gravitropic response in conifer compression wood",
pages = "1424-1413",
number = "6",
volume = "242",
doi = "10.1007/s00425-015-2381-6"
}

Donaldson, L., Nanayakkara, B., Radotić, K., Đikanović, D., Mitrović, A. Lj., Bogdanović Pristov, J., Simonović Radosavljević, J.,& Kalauzi, A.. (2015). Xylem parenchyma cell walls lack a gravitropic response in conifer compression wood. in Planta
Springer, New York., 242(6), 1413-1424.
https://doi.org/10.1007/s00425-015-2381-6

Donaldson L, Nanayakkara B, Radotić K, Đikanović D, Mitrović AL, Bogdanović Pristov J, Simonović Radosavljević J, Kalauzi A. Xylem parenchyma cell walls lack a gravitropic response in conifer compression wood. in Planta. 2015;242(6):1413-1424.
doi:10.1007/s00425-015-2381-6 .

Donaldson, Lloyd, Nanayakkara, Bernadette, Radotić, Ksenija, Đikanović, Daniela, Mitrović, Aleksandra Lj., Bogdanović Pristov, Jelena, Simonović Radosavljević, Jasna, Kalauzi, Aleksandar, "Xylem parenchyma cell walls lack a gravitropic response in conifer compression wood" in Planta, 242, no. 6 (2015):1413-1424,
https://doi.org/10.1007/s00425-015-2381-6 . .