Branching morphology and biomechanics of ivy (<i>Hedera helix</i>) stem‐branch attachments

Bunk, Katharina; Krassovitski, Semjon; Speck, Thomas; Masselter, Tom

doi:10.1002/ajb2.1341

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…The latter was the case in, for example, Beismann et al (2000) who calculated the relative roughness as the proportion between the area showing a rough surface and the total cross-sectional area of the samples. Some authors merely included the cross-sectional area but did not take into consideration the profile of the fractured surface in the measurements of the fractured areas ( Beismann et al , 2000 ; Kane et al , 2008 ; Masselter et al , 2011 ; Schwager et al , 2013 ; Bunk et al , 2019 ). The roughness of fracture surfaces of Macadamia shells was measured using a laser scanning confocal microscope focused on various regions of the shell (outer, middle, inner) and according to various compressive loading directions.…”

Section: Discussionmentioning

confidence: 99%

Biomechanics of the parasite–host interaction of the European mistletoe

Mylo

Hofmann

Balle

et al. 2021

Journal of Experimental Botany

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The European Mistletoe (Viscum album) is an epiphytic hemiparasite that attaches to its host by an endophytic system. Two aspects are essential for its survival: the structural integrity of the host-parasite interface must adapt to host growth and the functional integrity of the interface must be maintained during ontogeny and under mechanical stress. We investigated the mechanical properties of the mistletoe-host interaction. Intact and sliced mistletoe-host samples, with host wood as reference, were subjected to tensile tests up to failure. We quantified the rough fractured surface via digital microscopy and analysed local surface strains via digital image correlation. Tensile strength and deformation energy were independent of mistletoe age but exhibited significantly lower values than host wood samples. Cracks initiated at sites with a major strain of about 30%, especially along the mistletoe-host interface. The risk of sudden failure was counteracted by various sinkers and a lignification gradient that smoothens the differences in the mechanical properties between the two species. Our results improve the understanding of the mechanical key characteristics of the host-mistletoe interface and show that the mechanical connection between the mistletoe and its host is age-independent. Thus, functional and structural integrity is ensured over the lifetime of the mistletoe.

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Section: Discussionmentioning

confidence: 99%

Biomechanics of the parasite–host interaction of the European mistletoe

Mylo

Hofmann

Balle

et al. 2021

Journal of Experimental Botany

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“…Phenotype means the observable characteristics or traits of a disease. Usually, young plant stems will initially grow into pro-shaped, oblique branches on the ground, and this stage can sustain a long time [53]. In some cases, the possibility of ivy growing on the masonry and causing damage is beyond doubt.…”

Section: English Ivymentioning

confidence: 99%

“…Active measures are often taken to prevent ivy from growing wild. Whenever ivy is discovered, it is usually decided to eradicate it [53]. In recent years, there has been an increasing interest in bioactive molecules from the leaves of English ivy.…”

Section: English Ivymentioning

confidence: 99%

Small-scale botanical in enhancing indoor air quality: A bibliometric analysis (2011-2020) and short review

Tan

Wong²,

Kek³

et al. 2022

PROGEE

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Poor indoor air quality (IAQ) has developed a positive relationship with human health risks. Recently, research findings reported that the pollution level of indoor air could be 2 – 5 times higher than the outdoor air. In some studies, the poor IAQ could reach up to 100 times or more in a natural/ mechanical ventilated building. IAQ depends heavily on the ambient air quality and pollutants/ contaminants produced by household activities. Poor IAQ could lead to various health issues, i.e., asthma, lung cancer, dizziness, fatigue, headaches, etc. One of the possible solutions to overcome the poor IAQ problem is the utilisation of indoor botanical to improve the IAQ. The phytoremediation of botanical is an affordable and environmentally friendly approach to purify the polluted indoor air. Although there is no established recommendation for determining the best indoor botanical in improving the IAQ, many studies have revealed the ability of specific indoor botanicals to remove pollutants/ contaminants. This paper presents the bibliometric analysis and short review based on 79 publications issued in 2011 – 2021. Those articles were extracted from the Web of Science database. Based on the analysis, the number of publications has increased significantly starting from the year 2017. Indoor Air was identified as one of the top productive journals for this research topic.

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“…English ivy has distinctive juvenile and adult phenotypic characteristics (Bunk et al 2019). The juvenile period is long, often lasting 15 years or more (Reichard and Hamilton 1997).…”

Section: Introductionmentioning

confidence: 99%

The Impact of Environmental Factors on Traits of Hedera Helix L. Vegetative Shoots

Blinkova

Rawlik

Jagodziński

2023

Preprint

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Hedera helix L. is an evergreen vine native to Europe. Nowadays it is commonly recognised as an expansive species, posing danger to biodiversity of natural ecosystems. Obtaining the relationships between morphological variability, productive parameters of vegetative individuals and variations in environmental factors (on the example of the Kórnik Arboretum) is important for understanding the successful adaptation and dispersion of H. helix. Thus, the issue of our studies was to find the link between environmental factors and different traits of H. helix. We collected data on leaf length, leaf width, leaf petiole length, plant stem length, and the number of leaves per stem. We assessed values of ecological plasticity and correlation between the studied parameters. The results indicated the tolerance of ivy to wide variation in edaphic conditions. The limiting environmental factors for growth of the studied subpopulations were soil moisture and soil shade. We found large variability of leaf morphometric parameters and shoot length. Close correlation links were detected between leaf length/leaf width, leaf length/leaf petiole length, and leaf width/leaf petiole length. The length of the average leaf was a more variable parameter than the width of the leaf under different values of light intensity. Weak relationships were found between light intensity at the soil surface and plant stem length/the number of leaves per shoot. A high level of index of morphological integration of H. helix individuals and a close relationship between the quality index/subpopulation composition were established in this study. A direct relationship between light intensity and specific leaf area values was established. The value of specific leaf area decreased linearly with increasing of light intensity at the soil surface.

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Branching morphology and biomechanics of ivy (Hedera helix) stem‐branch attachments

Cited by 8 publications

References 36 publications

Biomechanics of the parasite–host interaction of the European mistletoe

Biomechanics of the parasite–host interaction of the European mistletoe

Small-scale botanical in enhancing indoor air quality: A bibliometric analysis (2011-2020) and short review

The Impact of Environmental Factors on Traits of Hedera Helix L. Vegetative Shoots

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