Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica
Autori
Simonović Radosavljević, JasnaMitrović, Aleksandra Lj.
Bogdanović Pristov, Jelena
Radotić, Ksenija
Janošević, Dušica
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Dioscorea balcanica Košanin, family Dioscoreaceae, is an endemic,
endangered liana species and a Tertiary relict of Balkan Peninsula. Gelatinous fibers,
specialized sclerenchyma cells and well-known components of tension wood, are
responsible for stem twining in liana plants. The aim of this investigation was to
determine changes in sclerenchyma cell walls correlated with the twining process in
liana plants. Our results showed that the differences in cell walls of sclerenchyma cells
between straight and twisted internodes are not visible by light microscopy, but they
are visible by SEM microscopy. In twisted internodes, cell walls of sclerenchyma cells
in the region of contact with the support (‘‘tension’’ side of twisted internodes) appear
smooth on the cross sections, suggesting cellulose microfibrils oriented almost
parallel to the fiber axis. In contrast, cell walls of the entire ring of sclerenchyma cells
in straight internodes, as well as cell walls of sclerenchyma cel...ls on the “opposite”
side of twisted internodes, appear jagged on the cross sections, suggesting cellulose
microfibrils oriented at very high microfibril angle to the fiber axis. This result
suggests that gelatinous fibers in D. balcanica stem have lignified G-layer, and thus
could contribute to the understanding of ‘‘late lignification of the G-layer’’.
Ključne reči:
Discorea balcanica, sclerenchyma cell walls, twiningIzvor:
13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions, 2019, 109-Izdavač:
- Institute for Nature Conservation of Serbia (Beograd)
- Faculty of Sciences and Mathematics (Niš). Depattment of Biology and Ecology
Finansiranje / projekti:
- Ispitivanja odnosa struktura-funkcija u ćelijskom zidu biljaka i izmene strukture zida enzimskim inženjeringom (RS-MESTD-Basic Research (BR or ON)-173017)
- Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Biotehnologija in vitro - gajene, lekovite i ugrožene biljne vrste (RS-MESTD-Basic Research (BR or ON)-173015)
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - CONF AU - Simonović Radosavljević, Jasna AU - Mitrović, Aleksandra Lj. AU - Bogdanović Pristov, Jelena AU - Radotić, Ksenija AU - Janošević, Dušica PY - 2019 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1816 AB - Dioscorea balcanica Košanin, family Dioscoreaceae, is an endemic, endangered liana species and a Tertiary relict of Balkan Peninsula. Gelatinous fibers, specialized sclerenchyma cells and well-known components of tension wood, are responsible for stem twining in liana plants. The aim of this investigation was to determine changes in sclerenchyma cell walls correlated with the twining process in liana plants. Our results showed that the differences in cell walls of sclerenchyma cells between straight and twisted internodes are not visible by light microscopy, but they are visible by SEM microscopy. In twisted internodes, cell walls of sclerenchyma cells in the region of contact with the support (‘‘tension’’ side of twisted internodes) appear smooth on the cross sections, suggesting cellulose microfibrils oriented almost parallel to the fiber axis. In contrast, cell walls of the entire ring of sclerenchyma cells in straight internodes, as well as cell walls of sclerenchyma cells on the “opposite” side of twisted internodes, appear jagged on the cross sections, suggesting cellulose microfibrils oriented at very high microfibril angle to the fiber axis. This result suggests that gelatinous fibers in D. balcanica stem have lignified G-layer, and thus could contribute to the understanding of ‘‘late lignification of the G-layer’’. PB - Institute for Nature Conservation of Serbia (Beograd) PB - Faculty of Sciences and Mathematics (Niš). Depattment of Biology and Ecology C3 - 13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions T1 - Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica SP - 109 UR - https://hdl.handle.net/21.15107/rcub_rimsi_1816 ER -
@conference{ author = "Simonović Radosavljević, Jasna and Mitrović, Aleksandra Lj. and Bogdanović Pristov, Jelena and Radotić, Ksenija and Janošević, Dušica", year = "2019", abstract = "Dioscorea balcanica Košanin, family Dioscoreaceae, is an endemic, endangered liana species and a Tertiary relict of Balkan Peninsula. Gelatinous fibers, specialized sclerenchyma cells and well-known components of tension wood, are responsible for stem twining in liana plants. The aim of this investigation was to determine changes in sclerenchyma cell walls correlated with the twining process in liana plants. Our results showed that the differences in cell walls of sclerenchyma cells between straight and twisted internodes are not visible by light microscopy, but they are visible by SEM microscopy. In twisted internodes, cell walls of sclerenchyma cells in the region of contact with the support (‘‘tension’’ side of twisted internodes) appear smooth on the cross sections, suggesting cellulose microfibrils oriented almost parallel to the fiber axis. In contrast, cell walls of the entire ring of sclerenchyma cells in straight internodes, as well as cell walls of sclerenchyma cells on the “opposite” side of twisted internodes, appear jagged on the cross sections, suggesting cellulose microfibrils oriented at very high microfibril angle to the fiber axis. This result suggests that gelatinous fibers in D. balcanica stem have lignified G-layer, and thus could contribute to the understanding of ‘‘late lignification of the G-layer’’.", publisher = "Institute for Nature Conservation of Serbia (Beograd), Faculty of Sciences and Mathematics (Niš). Depattment of Biology and Ecology", journal = "13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions", title = "Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica", pages = "109", url = "https://hdl.handle.net/21.15107/rcub_rimsi_1816" }
Simonović Radosavljević, J., Mitrović, A. Lj., Bogdanović Pristov, J., Radotić, K.,& Janošević, D.. (2019). Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica. in 13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions Institute for Nature Conservation of Serbia (Beograd)., 109. https://hdl.handle.net/21.15107/rcub_rimsi_1816
Simonović Radosavljević J, Mitrović AL, Bogdanović Pristov J, Radotić K, Janošević D. Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica. in 13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions. 2019;:109. https://hdl.handle.net/21.15107/rcub_rimsi_1816 .
Simonović Radosavljević, Jasna, Mitrović, Aleksandra Lj., Bogdanović Pristov, Jelena, Radotić, Ksenija, Janošević, Dušica, "Changes in sclerenchyma cell walls related to stem twining in Dioscorea balcanica" in 13th Symphosium on the flora of Southeastern Serbia and Neighboring Regions (2019):109, https://hdl.handle.net/21.15107/rcub_rimsi_1816 .