scholarly journals Characteristics of heteroblasty in Hladnikia pastinacifolia (Apiaceae), a rare endemic from Slovenia

2021 ◽  
Vol 4 (1) ◽  
pp. 23-32
Author(s):  
Teja Pintarič ◽  
Nina Šajna
Keyword(s):  
Plant Species ◽  
Morphological Characteristics ◽  
Distinct Type ◽  
Lower Epidermis ◽  
Leaf Lamina ◽  
Endemic Plant ◽  
Palisade Parenchyma ◽  
Functional Features ◽  
Endemic Plant Species ◽  
Rare Endemic

Hladnikia pastinacifolia, the most prominent endemic plant species in Slovenia, is rare and protected because it is a stenoendemic and paleoendemic species restricted to area of Trnovski gozd (W Slovenia). However, this species can be found in various habitats. The disparity between the non-specific habitat preference of the species and its rarity has not been sufficiently explained. Here we focus on the functional morphological features that are most indicative for the ecology of plant species: the anatomical and morphological characteristics of leaves. Hladnikia pastinacifolia exhibits heterophylly during ontogeny (heteroblasty). We aimed to describe and compare the anatomical characteristics of three H. pastinacifolia leaf morphotypes among them and in relation to various habitats. Therefore, we compared leaf functional features that are indicative for the ecology of plant species: the thickness of the leaf lamina, the spongy and palisade parenchyma, the thickness of the upper and lower epidermis and the number of leaf stomata in the upper and lower epidermis. These measurements were further used to calculate the ratio between the spongy and palisade parenchyma, leaf stomata index and the density of leaf stomata. We determined that the H. pastinacifolia heteroblasty belongs to the Apium-type. Results showed that the five-pinnate leaves were the most distinct type, being the thickest, with the highest numbers of stomata abaxially. When compared among habitats, leaves from the scree habitat were the thickest according to all the tissue layers studied. The indices calculated were less useful for the distinction between leaf types and habitats.

USE OF BIOTECHNOLOGY METHODS FOR PROPAGATION AND CONSERVATION OF RARE ENDEMIC PLANT SPECIES OF THE CRIMEAN FLORA

2017 ◽  
Vol 22 (5-1) ◽  
pp. 965-969 ◽  
Author(s):  
I.V. Mitrofanova ◽  
◽  
O.V. Mitrofanova ◽  
A.R. Nikiforov ◽  
N.P. Lesnikova-Sedoshenko ◽  
...  
Keyword(s):  
Plant Species ◽  
Endemic Plant ◽  
Endemic Plant Species ◽  
Rare Endemic

Biotechnological methods of propagation for some rare endemic plant species of the southern Russian flora

2020 ◽  
pp. 177-184
Author(s):  
I.V. Mitrofanova ◽  
N.P. Lesnikova-Sedoshenko ◽  
V.A. Brailko ◽  
S.V. Chelombit ◽  
I.V. Zhdanova ◽  
...  
Keyword(s):  
Plant Species ◽  
Endemic Plant ◽  
Endemic Plant Species ◽  
Rare Endemic

scholarly journals The effect of anthropogenic factors on rare, endemic plant species in the Ile Alatau

2020 ◽  
Vol 222 ◽  
pp. 05021
Author(s):  
Alibek Ydyrys ◽  
Akerke Serbayeva ◽  
Symbat Dossymbetova ◽  
Aigul Akhmetova ◽  
Aida Zhuystay
Keyword(s):  
Plant Species ◽  
Age Structure ◽  
Anthropogenic Impact ◽  
Anthropogenic Factors ◽  
Agricultural Activities ◽  
Endemic Plant ◽  
Age Range ◽  
Endemic Plant Species ◽  
Rare Endemic ◽  
Different Parts

Our study showed that the anthropogenic impact on the flora of the study area, including agricultural activities, is growing every year. This complex research has been conducted in Almaty Province on the 6 populations of the four rare and endemic plant species (Ikonnikovia kaufmanniana, Limonium michelsonii), taking into account the total number, age spectrum. An analysis of the density and age structure of the populations Ikonnikovia kaufmanniana showed that the age range of the population 1 and 2 account for maximum virginal individuals and in the population of 3 generative individuals. The results of the study of the age and condition of life Limonium michelsonii in different parts of the three populations showed that a young virginal (64.6%) and generative individuals (23.6%) and in the population 2, the maximum is in juvenile (54.5%) and (20.49%) individuals and population 3 maximum occurs at a young virginal (38.9%) and (29.4%) individuals.

scholarly journals Chromosome numbers for some vascular plants from Mongolia. Post 2

Turczaninowia ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 145-153
Author(s):  
Elena A. Korolyuk ◽  
Tatyana V. An’kova ◽  
Andrey Yu. Korolyuk
Keyword(s):  
Plant Species ◽  
Chromosome Numbers ◽  
Vascular Plants ◽  
Cirsium Arvense ◽  
Published Data ◽  
Endemic Plant ◽  
Endemic Plant Species ◽  
Rare Endemic ◽  
First Time

Chromosome numbers (2n) for 13 rare, endemic plant species (19 populations) from the families: Asparagaceae, Asteraceae, Boraginaceae, Brassicaceae, Caryophillaceae, Euphorbiaceae, Plantaginaceae – are reported on the material from Mongolia. For Euphorbia potaninii Prokh. (2n = 20), Smelowskia altaica (Pobed.) Botsch. (2n = 14) chromosome complements were examined for the first time. Chromosome numbers of Askellia flexuosa (Ledeb.) W. A. Weber (2n = 42), Cirsium arvense var. vestitum Wimm. et Grab. (2n = 34), Crepis crocea (Lam.) Babc. (2n = 16), Eremogone meyerii (Fenzl) Ikonn. (2n = 44), Heterochroa desertorum Bunge (2n = 34), Plantago komarovii Pavl. (2n= 10, 12), Rhinactinidia eremophila (Bunge) Novopokr. ex Botsch. (2n = 36) were determined from Mongolia for the first time. New cytotypes for Anoplocaryum compressum (Turcz.) Ledeb. (2х) and Eremogone meyerii (4x) were studied. For the species of Plantago komarovii, the phenomenon of aneuploidy (2x = 10) was described for the first time. For each species the area and published data on karyology are given.

scholarly journals Mauritian coloured nectar no longer a mystery: a visual signal for lizard pollinators

2006 ◽  
Vol 2 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Dennis M Hansen ◽  
Karin Beer ◽  
Christine B Müller
Keyword(s):  
Experimental Evidence ◽  
Plant Species ◽  
Flowering Plants ◽  
Visual Signal ◽  
Honest Signal ◽  
Endemic Plant ◽  
Floral Trait ◽  
Flower Visitation ◽  
Artificial Flowers ◽  
Endemic Plant Species

Most floral nectars are clear as water, and the enigmatic coloured nectar in three endemic plant species in Mauritius has puzzled scientists studying it. One hypothesis about the possible ecological function of coloured nectar is that it serves as a visual signal for pollinators. Recent studies have shown that at least two of the three Mauritian plant species with coloured nectar are visited and pollinated by endemic Phelsuma geckos. We here provide experimental evidence for the visual signal hypothesis by showing that Phelsuma ornata geckos prefer coloured over clear nectar in artificial flowers. In flowering plants, coloured nectar could additionally function as an honest signal that allows pollinators to assert the presence and judge the size of a reward prior to flower visitation, and to adjust their behaviour accordingly, leading to increased pollinator efficiency. Our study provides a first step in understanding this rare and intriguing floral trait.

scholarly journals Pyrrolizidine Alkaloids and Fatty Acids from the Endemic Plant Species Rindera umbellata and the Effect of Lindelofine-N-oxide on Tubulin Polymerization

Molecules ◽  
2013 ◽  
Vol 18 (9) ◽  
pp. 10694-10706 ◽  
Author(s):  
Boris Mandić ◽  
Milena Simić ◽  
Ivan Vučković ◽  
Ljubodrag Vujisić ◽  
Miroslav Novaković ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Plant Species ◽  
Pyrrolizidine Alkaloids ◽  
Tubulin Polymerization ◽  
Endemic Plant ◽  
Endemic Plant Species
Sign in / Sign up

Export Citation Format

Share Document