Putative local adaptations modulate the interactions of the carnivorous plant Drosera uniflora Willd (1809) (Droseraceae) with cushion and shrub nurse plants

2019 ◽  
Vol 44 (6) ◽  
pp. 962-972
Author(s):  
José I. Orellana ◽  
Carlos E. Valdivia

Author(s):  
B. J. Panessa ◽  
J. F. Gennaro

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.



Author(s):  
Bartosz J. Płachno ◽  
Lyudmila E. Muravnik

We review the current knowledge of trap anatomy of carnivorous plants, with a focus on the diversity and structure of the glands that are used to attract, capture, kill and digest their prey and finally to absorb nutrients from carcasses of prey. These glands have diverse forms. Regardless of their structure and origin, they have the same functional units, but there are differences in subcellular mechanisms and adaptations for carnivory. We propose a new type of carnivorous plant trap—a ‘fecal traps—which has unique physiology, morphology, and anatomy for attracting the animals that are the source of excrement and also to retain and use it.



Author(s):  
Matthew C. Fitzpatrick ◽  
Aaron M. Ellison

Climatic change likely will exacerbate current threats to carnivorous plants. However, estimating the severity of climatic change is challenged by the unique ecology of carnivorous plants, including habitat specialization, dispersal limitation, small ranges, and small population sizes. We discuss and apply methods for modeling species distributions to overcome these challenges and quantify the vulnerability of carnivorous plants to rapid climatic change. Results suggest that climatic change will reduce habitat suitability for most carnivorous plants. Models also project increases in habitat suitability for many species, but the extent to which these increases may offset habitat losses will depend on whether individuals can disperse to and establish in newly suitable habitats outside of their current distribution. Reducing existing stressors and protecting habitats where numerous carnivorous plant species occur may ameliorate impacts of climatic change on this unique group of plants.



FEBS Open Bio ◽  
2021 ◽  
Author(s):  
Alberto Davila‐Lara ◽  
Michael Reichelt ◽  
Ding Wang ◽  
Heiko Vogel ◽  
Axel Mithöfer
Keyword(s):  


Author(s):  
Edward Owen Norman ◽  
Hayden Tuohey ◽  
David Pizzi ◽  
Milane Saidah ◽  
Rachael Bell ◽  
...  


2021 ◽  
Vol 53 ◽  
pp. 101087
Author(s):  
Jesús E. Rueda-Almazán ◽  
Víctor Manuel Hernández ◽  
Jorge René Alcalá-Martínez ◽  
Andrea Fernández-Duque ◽  
Mariana Ruiz-Aguilar ◽  
...  


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Bian ◽  
Angela Pinilla ◽  
Tom Chandler ◽  
Richard Peters

AbstractHabitat-specific characteristics can affect signal transmission such that different habitats dictate the optimal signal. One way to examine how the environment influences signals is by comparing changes in signal effectiveness in different habitats. Examinations of signal effectiveness between different habitats has helped to explain signal divergence/convergence between populations and species using acoustic and colour signals. Although previous research has provided evidence for local adaptations and signal divergence in many species of lizards, comparative studies in movement-based signals are rare due to technical difficulties in quantifying movements in nature and ethical restrictions in translocating animals between habitats. We demonstrate herein that these issues can be addressed using 3D animations, and compared the relative performance of the displays of four Australian lizard species in the habitats of each species under varying environmental conditions. Our simulations show that habitats differentially affect signal performance, and an interaction between display and habitat structure. Interestingly, our results are consistent with the hypothesis that the signal adapted to the noisier environment does not show an advantage in signal effectiveness, but the noisy habitat was detrimental to the performance of all displays. Our study is one of the first studies for movement-based signals that directly compares signal performance in multiple habitats, and our approach has laid the foundation for future investigations in motion ecology that have been intractable to conventional research methods.



2017 ◽  
Vol 120 (5) ◽  
pp. 673-680 ◽  
Author(s):  
Bartosz J Płachno ◽  
Piotr Świątek ◽  
Richard W Jobson ◽  
Karol Małota ◽  
Wojciech Brutkowski
Keyword(s):  


2012 ◽  
Vol 27 (2) ◽  
pp. 390-393 ◽  
Author(s):  
Adewale O. Adisa ◽  
Oladejo O. Lawal ◽  
OlukaYode A. Arowolo ◽  
Olusegun I. Alatise




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