Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae)
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Ramonda serbica and R. nathaliae are known as resurrection flowering plants. Both species are long-living chasmophytes that are physiologically inactive during warm summer periods. Besides numerous known adaptations at the physiological level, it is reasonable to expect that these plant species possess a number of distinctive structural adaptations associated with poikilohydry. Therefore, we analyzed in detail the anatomy of roots, stem and leaves of both species. Plants were collected from their natural habitat or grown from seeds in controlled conditions. Fresh or fixed plant material was sectioned and stained by various histochemical reagents. In addition, vascular tissue was investigated on macerated plant material, and the characteristics of epidermal cells were analyzed on epidermal peelings. Samples were investigated by reflected or transmitted light microscopy, or by scanning electron microscopy. Epidermal cells of the leaves have specific anticlinal beaded thickenings, which c...ould enable maintenance of the epidermis during dehydration and rehydration. Stem vascular tissues form a net-like structure. The shape and arrangement of parenchyma cells appear to support axial contraction. At the base of each adventitious root, a special, thick-walled tissue is observed, which is composed of living cells with pitted walls and probably not involved in long-distance water transport. Overall, various stem and leaf adaptations allow effective water transport through the plant and provide mechanical stability during the relatively fast process of dehydration and rehydration.
Кључне речи:
Contractile stem / Fluorescence microscopy / Lacunar space / Poikilohydric plant / Resurrection plant / Vascular systemИзвор:
Flora, 2017, 233, 186-193Издавач:
- Elsevier Gmbh, Munich
Финансирање / пројекти:
- Биодиверзитет биљног света Србије и Балканског полуострва - процена, одрживо коришћење и заштита (RS-MESTD-Basic Research (BR or ON)-173030)
- Савремени биотехнолошки приступ решавања проблема суше у пољопривреди Србије (RS-MESTD-Technological Development (TD or TR)-31005)
DOI: 10.1016/j.flora.2017.06.003
ISSN: 0367-2530
WoS: 000416737200021
Scopus: 2-s2.0-85020889783
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Rakić, Tamara AU - Jansen, Steven AU - Rančić, Dragana PY - 2017 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/4417 AB - Ramonda serbica and R. nathaliae are known as resurrection flowering plants. Both species are long-living chasmophytes that are physiologically inactive during warm summer periods. Besides numerous known adaptations at the physiological level, it is reasonable to expect that these plant species possess a number of distinctive structural adaptations associated with poikilohydry. Therefore, we analyzed in detail the anatomy of roots, stem and leaves of both species. Plants were collected from their natural habitat or grown from seeds in controlled conditions. Fresh or fixed plant material was sectioned and stained by various histochemical reagents. In addition, vascular tissue was investigated on macerated plant material, and the characteristics of epidermal cells were analyzed on epidermal peelings. Samples were investigated by reflected or transmitted light microscopy, or by scanning electron microscopy. Epidermal cells of the leaves have specific anticlinal beaded thickenings, which could enable maintenance of the epidermis during dehydration and rehydration. Stem vascular tissues form a net-like structure. The shape and arrangement of parenchyma cells appear to support axial contraction. At the base of each adventitious root, a special, thick-walled tissue is observed, which is composed of living cells with pitted walls and probably not involved in long-distance water transport. Overall, various stem and leaf adaptations allow effective water transport through the plant and provide mechanical stability during the relatively fast process of dehydration and rehydration. PB - Elsevier Gmbh, Munich T2 - Flora T1 - Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae) EP - 193 SP - 186 VL - 233 DO - 10.1016/j.flora.2017.06.003 ER -
@article{ author = "Rakić, Tamara and Jansen, Steven and Rančić, Dragana", year = "2017", abstract = "Ramonda serbica and R. nathaliae are known as resurrection flowering plants. Both species are long-living chasmophytes that are physiologically inactive during warm summer periods. Besides numerous known adaptations at the physiological level, it is reasonable to expect that these plant species possess a number of distinctive structural adaptations associated with poikilohydry. Therefore, we analyzed in detail the anatomy of roots, stem and leaves of both species. Plants were collected from their natural habitat or grown from seeds in controlled conditions. Fresh or fixed plant material was sectioned and stained by various histochemical reagents. In addition, vascular tissue was investigated on macerated plant material, and the characteristics of epidermal cells were analyzed on epidermal peelings. Samples were investigated by reflected or transmitted light microscopy, or by scanning electron microscopy. Epidermal cells of the leaves have specific anticlinal beaded thickenings, which could enable maintenance of the epidermis during dehydration and rehydration. Stem vascular tissues form a net-like structure. The shape and arrangement of parenchyma cells appear to support axial contraction. At the base of each adventitious root, a special, thick-walled tissue is observed, which is composed of living cells with pitted walls and probably not involved in long-distance water transport. Overall, various stem and leaf adaptations allow effective water transport through the plant and provide mechanical stability during the relatively fast process of dehydration and rehydration.", publisher = "Elsevier Gmbh, Munich", journal = "Flora", title = "Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae)", pages = "193-186", volume = "233", doi = "10.1016/j.flora.2017.06.003" }
Rakić, T., Jansen, S.,& Rančić, D.. (2017). Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae). in Flora Elsevier Gmbh, Munich., 233, 186-193. https://doi.org/10.1016/j.flora.2017.06.003
Rakić T, Jansen S, Rančić D. Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae). in Flora. 2017;233:186-193. doi:10.1016/j.flora.2017.06.003 .
Rakić, Tamara, Jansen, Steven, Rančić, Dragana, "Anatomical specificities of two paleoendemic flowering desiccation tolerant species of the genus Ramonda (Gesneriaceae)" in Flora, 233 (2017):186-193, https://doi.org/10.1016/j.flora.2017.06.003 . .