Anatomical and physical changes in leaves during the production of tamales

Angeles, Guillermo; Lascurain, Maite; Dávalos-Sotelo, Raymundo; Zarate-Morales, Reyna Paula; Ortega-Escalona, Fernando

doi:10.3732/ajb.1200578

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…These leaf mechanical traits contribute significantly to defense from insect herbivores 31,32 and resistance to habitat factors 33 as well as the use of leaves as a source of biomass 21,22 . The tensile test is particularly important in the case of heterogenic 14 and different thin-film 47–50 plant materials as it provides valuable information about their mechanical properties also in the fiber-specific direction 15,17 . Furthermore, for plant materials it is difficult to determine the value of Poisson’s ratio that is the reason for the rare testing the strength of biomaterials 51–54 .…”

Section: Introductionmentioning

confidence: 99%

The relationship between physiological and mechanical properties of Acer platanoides L. and Tilia cordata Mill. leaves and their seasonal senescence

Ciupak

Dziwulska‐Hunek

Gładyszewska

et al. 2019

Sci Rep

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The seasonal senescence of leaves in the phenological cycle coincides with the change of their strength properties which determine resistance to environmental conditions and the efficiency of the photosynthesis process. That affects the development, growth and condition of the plant. Therefore, the aim of this paper was to observe and compare the results of strength tests performed on the leaves of two species of trees popular in Poland - lime and maple. As well as chlorophyll fluorescence and photosynthetic pigments content in the context of the changes occurring during the entire leaf life cycle. Obtained results showed that the strength properties of the tested leaves reached the minimum values in spring and the maximum in the summer similarly to the leaf greenness index. Whereas the fluorescence increased which the seasonal senescence in opposition to the photosynthesis efficiency of the leaves. Collected data revealed that strength parameters and photosynthetic pigment content were significantly higher for maple leaves than for lime leaves. Studies showed differences between physiological and mechanical properties of the leaves of two trees species, even if they grew under the same environmental conditions. It is concluded from the results that phenotype and physical parameters of leaves are related to seasonal senescence.

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Section: Introductionmentioning

confidence: 99%

The relationship between physiological and mechanical properties of Acer platanoides L. and Tilia cordata Mill. leaves and their seasonal senescence

Ciupak

Dziwulska‐Hunek

Gładyszewska

et al. 2019

Sci Rep

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“…), rice black-streaked dwarf virus (RBSDV, transmitted in a persistent manner primarily by the planthopper, Laodelphax striatellus , U. sapporonus and Ribautodelphax albifascia ) and southern rice black-streaked dwarf virus (SRBSDV, transmitted by Sogatella furcifera in a persistent propagative manner) [3, 5, 6, 10]. Leaf tensile strength and stiffness, which mainly depend on cellulose, hemicellulose and lignin contents, are also related to hormonal changes in plants [11–13]. In our study, cellulose, hemicellulose and lignin contents of leaves of RSMV-infected plants changed significantly.…”

Section: Discussionmentioning

confidence: 99%

Symptoms and yield loss caused by rice stripe mosaic virus

Chen

Huang

et al. 2019

Virol J

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BackgroundRice stripe mosaic virus (RSMV) is a tentative new Cytorhabdovirus species in family Rhabdoviridae transmitted by the leafhopper Recilia dorsalis. Although the virus was first detected in southern China in 2015, few studies have investigated rice symptoms and yield losses caused by RSMV infection.MethodsIn this study, we observed and systematically compared symptoms of three virally infected, representative varieties of indica, hybrid and japonica rice and determined the yield parameters of the artificially inoculated plants.ResultsThe three RSMV-infected cultivated rice varieties exhibited slight dwarfing, striped mosaicism, stiff, crinkled or even twisted leaves, an increased number of tillers, delayed heading, cluster-shaped shortening of panicles and mostly unfilled grains. Slight differences in symptom occurrence time were observed under different environmental conditions. For example, mosaic symptoms appeared earlier and crinkling symptoms appeared later, with both symptoms later receding in some infected plants. Yield losses due to RSMV also differed among varieties. The most serious yield reduction was experienced by indica rice (cv. Meixiangzhan), followed by hybrid indica rice (cv. Wuyou 1179) and then japonica (cv. Nipponbare). Single panicle weight, seed setting rate and 1000-kernel weight were reduced in the three infected varieties compared with healthy plants—by 85.42, 94.85 and 31.56% in Meixiangzhan; 52.43, 53.06 and 25.65% in Wuyou 1179 and 25.53, 49.32 and 23.86% in Nipponbare, respectively.ConclusionsOur findings contribute basic data for field investigations, formulation of prevention and control strategies and further study of the pathogenesis of RSMV.

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“…Studies indicate that the values of Young's modulus for leaves depends primarily on the plant species, cultivar and growth phase. Angeles et al (2013) determined the value of E for the leaves of 4 plant species used in the preparation of tamale, a traditional Mexican dish. In the case of Calathea misantlensis and Canna indica the values of E were within the range of approx.…”

Section: Investigated Featurementioning

confidence: 99%

“…The strength characteristics of plant leaves are usually determined based on three main types of mechanical tests -puncture test, shear test and tensile test (Onoda et al 2011, Read andSanson 2003). The tensile test is particularly useful in studies conducted on heterogenous plant material (Kohyama et al 2008) as it may provide valuable information concerning mechanical characteristics, and also with regard to forces parallel to fibre alignment (Angeles et al 2013, Kohyama et al 2008. Single-axis tensile strength tests have been conducted to determine various strength parameters of e.g.…”

Section: Introductionmentioning

confidence: 99%

Impact of seed light stimulation on the mechanical strength and photosynthetic pigments content in the scorzonera leaves

Ciupak¹,

Dziwulska‐Hunek²,

Krawiec³

et al. 2019

Acta Agroph.

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The leaves of scorzonera are vulnerable to mechanical damage due to heavy rainfall or wind. The aim of the study was to determine the impact of pre-sowing exposure of scorzonera seeds to laser light on the mechanical strength of the leaves and the content of photosynthetic pigments. The research material consisted of scorzonera leaves obtained from seeds treated with He-Ne laser light at the wavelength of 632.8 nm, surface power density of 5 mW cm-2 , and exposure time of 1, 5, 10, and 30 minutes. Young's modulus measurements showed that the leaves of the plants grown from seeds subjected to laser light stimulation were characterized by better mechanical strength compared to the leaves of the control. The highest values of the Young's modulus were recorded for scorzonera plants grown from seeds subjected to laser light exposure for 10 minutes. Exposure to light for a period of 1, 5 and 30 minutes significantly affected the content of chlorophylls and carotenoids in the leaves relative to the control. The largest increase in the content of photosynthetic pigments was recorded for 1 minute. The improvement in the mechanical strength of scorzonera leaves may reduce their vulnerability to mechanical damage during vegetation.

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Anatomical and physical changes in leaves during the production of tamales

Cited by 8 publications

References 44 publications

The relationship between physiological and mechanical properties of Acer platanoides L. and Tilia cordata Mill. leaves and their seasonal senescence

The relationship between physiological and mechanical properties of Acer platanoides L. and Tilia cordata Mill. leaves and their seasonal senescence

Symptoms and yield loss caused by rice stripe mosaic virus

Impact of seed light stimulation on the mechanical strength and photosynthetic pigments content in the scorzonera leaves

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