Temperature requirements for seed germination of Pereskia aculeata and Pereskia grandifolia

Souza, Lucéia Fátima; Gasparetto, Bruno Frosi; Lopes, Rodrigo Ramos; Barros, Ingrid Bergman Inchausti de

doi:10.1016/j.jtherbio.2016.01.009

Cited by 22 publications

(20 citation statements)

References 12 publications

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“…under constant temperatures see Rojas-Aréchiga et al, 1998;Ortega-Baes and Rojas-Aréchiga, 2007;Ortega-Baes et al, 2011 andSouza et al, 2016). Seed germination occurred in the different solutions of PEG 6000 under white light ( Figure 1A).…”

Section: Resultsmentioning

confidence: 83%

Seed germination of three endangered subspecies of Discocactus Pfeiff. (Cactaceae) in response to environmental factors

2018

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Temperature, light, water availability and excessive salt in the soil are among the abiotic factors that most influence the germination process in semiarid ecosystems. The aim of the present study was to determine the effect of these abiotic factors on seed germination in three subspecies of cactus: Discocactus bahiensis, D. zehntneri subsp. petr-halfarii and D. zehntneri subsp. zehntneri. Seeds were set for germination under two light conditions (12-h light/dark photoperiod and continuous darkness) and 10 temperature treatments [eight constant temperatures (10, 15, 20, 25, 30, 35, 40 and 45 °C) and two alternating temperatures (30 to 20 °C and 35 to 25 °C)]. Polyethylene Glycol (PEG) 6000 and sodium chloride (NaCl) were used to simulate water and saline stress, respectively, with the following osmotic potentials: 0.0, -0.2, -0.4, -0.6, -0.8 and -1.0 MPa. Three subspecies were positive photoblastic. The optimum temperature for germination was 25 to 35 ºC for D. bahiensis and D. zehntneri subsp. zehntneri, and 30 to 35 ºC for D. zehntneri subsp. petr-halfarii. The seeds of all three subspecies exhibited tolerance to water and saline stress, as germination was observed at potentials for up to -0.6 MPa in the PEG and NaCl solutions.

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Section: Resultsmentioning

confidence: 83%

Seed germination of three endangered subspecies of Discocactus Pfeiff. (Cactaceae) in response to environmental factors

2018

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“…Environmental temperature is one of the key factors that affect the yield and quality of crop plants by influencing their distribution, major physiological and biochemical processes (Jumrani and Bhatia 2014 ; Pham et al 2015 ; Souza Lucéia et al 2016 ; Wang et al 2016 ; Sunoj et al 2016 ; Yang et al 2016 ; Xu et al 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of different growth temperatures on growth, development, and plastid pigments metabolism of tobacco (Nicotiana tabacum L.) plants

Yang

et al. 2018

Bot Stud

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BackgroundTemperature remarkably affects the growth and metabolism of plants. Tobacco is an important cash crop, and the long-term effects of different growth temperatures (18.5, 23.5 and 28.5 °C, daily average) on growth, development and plastid pigments metabolism of tobacco plants were investigated in this study.ResultsCompared with tobacco plants grown under 23.5 °C, treatments with 18.5 and 28.5 °C inhibited the expansion of leaves. The contents of superoxide anion (O2·−), hydrogen peroxide (H2O2) and malonaldehyde (MDA) in the leaves were significantly increased under 28.5 °C from 0 to 60 days, which in turn accelerated the flowering and senescence of tobacco plants. By contrast, the treatment with 18.5 °C remarkably decreased O2.−, H2O2 and MDA, and delayed the flowering and senescence. Furthermore, treatment with 18.5 °C significantly up-regulated the expression of glutamyl-tRNA reductase (Glu-TR) and magnesium chelatase (MgCH), and down-regulated the ferri chelatase (FeCH), protochlorophyllide oxidoreductase, chlorophyllase (CHLase), phaeophorbide a monooxygenase (PaO) and phytoene synthase (PSY), which further promoted the accumulation of chlorophyll (Chls) and reduced the carotenoids (Cars) in leaves. On the contrary, exposing to 28.5 °C remarkably down-regulated the Glu-TR and MgCH, and up-regulated the FeCH, CHLase, PaO and PSY, which in turn decreased the Chls and increased the Cars in tobacco leaves.ConclusionAs compared with the plants grown under 23.5 °C, lower (18.5 °C) and higher (28.5 °C) growth temperature inhibited the growth of tobacco plants. In general, treatment with 28.5 °C accelerated the flowering and senescence of tobacco plants by enhancing the accumulation of O2.− and H2O2 in leaves, while exposing to 18.5 °C had the opposite effects. Treatment with 18.5 °C increased the content of Chls and reduced the Cars in leaves. In contrast, Treatment with 28.5 °C decreased the Chls and increased the Cars. Moreover, both O2.− and H2O2 took part in the breakdown of Chls in tobacco leaves to some extent. The results suggest that growth temperature could regulate growth, development, and plastid pigments metabolism, and 23.5 °C could be an optimal temperature for growth, development and metabolism of plastid pigments of tobacco plants under the experimental conditions.

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“…It occurs due to the scarce information and expertise about the propagation. Despite the production time beings lower in sexual propagation, plants with desirable morphological characteristics are needed to ensure sustainable cultivation and identify the existing genetic diversity in these species (Souza et al, 2016b;Gibson and Nobel, 1990). Flower (image captured on 3 rd May of 2018 and available in https://www.flickr.com/photos/marcusviniciuslameiras/4894377091).…”

Section: The Genus Pereskiamentioning

confidence: 99%

Agronomic Cultivation, Chemical Composition, Functional Activities and Applications of Pereskia Species – A Mini Review

Maciel

Yoshida

Goycoolea

2019

CMC

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Background: The exploration of the plant biodiversity as a natural source to obtain sustainable food products and new bioactive pharmaceutical compounds has been growing significantly due to their abundance, safety and economy. Natural pharmaceutical and edible compounds present some advantages when compared to synthetic ones, such as being chemically inert and widely available. In this sense, plants of the genus Pereskia belonging to the Cactaceae family, have been studied. It is an unconventional wild edible plant that contains a large amount of protein and minerals. Studies have demonstrated their biological activities and potential application in different areas such as pharmaceutical, medicinal and food. Objective: This review is focused on the chemical composition, functional properties, applications on pharmaceutical, nutraceutical and food areas and formulation techniques to enhance the stability and bioavailability of bioactive compounds from the underutilized wild edible plant known as ora-pro-nobis (Pereskia aculeata or Pereskia grandifolia). Conclusion: The latest studies involving ora-pro-nobis demonstrated its great potential due to its biological activities, which could stimulate further investigations. The utilization of this plant as a natural source to supplement the diet, or to prepare new food products and pharmaceutical formulations is an attractive approach to explore and fully realize the potential of the rich biodiversity found in Brazil and in other countries.

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Temperature requirements for seed germination of Pereskia aculeata and Pereskia grandifolia

Cited by 22 publications

References 12 publications

Seed germination of three endangered subspecies of Discocactus Pfeiff. (Cactaceae) in response to environmental factors

Seed germination of three endangered subspecies of Discocactus Pfeiff. (Cactaceae) in response to environmental factors

Effects of different growth temperatures on growth, development, and plastid pigments metabolism of tobacco (Nicotiana tabacum L.) plants

Agronomic Cultivation, Chemical Composition, Functional Activities and Applications of Pereskia Species – A Mini Review

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