Effects of alternating temperature on cactus seeds with a positive photoblastic response

Lindow‐López, L.; Galíndez, Guadalupe; Aparicio-González, Mónica; Sühring, Silvia; Rojas-Aréchiga, Mariana; Pritchard, Hugh W.; Ortega–Baes, Pablo

doi:10.1016/j.jaridenv.2017.10.006

Cited by 11 publications

(5 citation statements)

References 8 publications

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“…Temperature and seed germination. The current knowledge about the germination response of cactus seeds concerning different temperatures includes approximately 205 taxa (Table 1); the majority possesses an optimal germination between 20 -30 °C (Zimmer 1968(Zimmer , 1982(Zimmer , 1998 (Zimmer 1968, 1982, Lone et al 2016, Meiado et al 2016, Lindow-López et al 2018b. Most of the species mentioned above inhabit temperate climates with annual average temperatures between 10.1 and 19.4 °C (https:// es.climate-data.org), except Pereskia spp.…”

Section: Seed Dormancy Rojas-aréchiga and Vázquez-yanesmentioning

confidence: 99%

“…Because temperatures continually vary in nature, various studies have compared the germination response of the cactus seeds between constant and alternating temperatures. In such studies, the alternation of temperature can produce three types of responses: (1) lower percentage of germination (Rojas-Aréchiga et al 1997, Matías-Palafox 2007, Ortega-Baes & Rojas-Aréchiga 2007, Lindow-López et al 2018b, 2 In some studies, the three types of responses have been observed (Ortega-Baes et al 2010, Meiado et al 2016. From these results, it can be inferred that the germination response concerning the constancy or variation of the temperature becomes species-specific (Ortega-Baes et al 2010) so that a general tendency does not exist in the Cactaceae family such as in other families .…”

Section: Seed Dormancy Rojas-aréchiga and Vázquez-yanesmentioning

confidence: 99%

“…similar percentage of germination(Godínez-Álvarez & Valiente-Banuet 1998, Ruedas et al 2000, De la Barrera & Nobel 2003, Yang et al 2003, Ramírez-Padilla & Valverde 2005, Matías-Palafox 2007, Sánchez-Soto et al 2010, Mazzola et al 2013, Jiménez-Sierra & Matías-Palafox 2015, Kin et al 2015, Lindow-López et al 2018b or(3)higher percentage of germination (Godínez-Álvarez & Valiente-Banuet 1998).…”

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confidence: 97%

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Seed traits and germination in the Cactaceae family: A review across Americas

Barrios¹,

Sánchez²,

Flores³

et al. 2020

Bot. Sci.

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Background: Cactaceae is the fifth taxonomic group with the highest proportion of threatened species and among the angiosperms, the most vulnerable to human disturbance. One way to contribute to the preservation of this family is to understand the processes that promote seed germination. Questions: Have the relationship between seed traits and cactus germination been documented? How common is dormancy and seed banks in Cactaceae? Are there general patterns in cacti germination response to temperature, light, water, salinity, phytohormones, hydration/dehydration cycles, mechanical or chemical scarification? Data description: A total of 333 studies on cactus germination with information on 409 taxa. Study site and dates: since 1939 to January 2020. Methods: A search of scientific articles in Google Scholar was performed with the words Cactaceae, cacti and cactus, in combination with various matters on germination in English, Spanish and Portuguese. Results: The main germination studies in cactus deal with photoblasticism (275 taxa), temperature (205 taxa) and seed longevity (142 taxa). Other lines of study in cactus germination (e.g., desiccation tolerance, vivipary, phytohormones, mechanical or chemical scarification, in vitro germination, hydration/dehydration cycles, water and saline stress, serotiny, storage in cold, high temperature tolerance and soil seed bank) include between 14 and 65 taxa. Cacti have only physiological dormancy and optimal germination for most species occur between 20 and 30 °C. Photoblasticism is strongly influenced by phylogeny with 80.9 % positive photoblastic species. Conclusions: Mexico, Brazil and Argentina are the three leading countries in the study of cactus germination.

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Section: Seed Dormancy Rojas-aréchiga and Vázquez-yanesmentioning

confidence: 99%

Section: Seed Dormancy Rojas-aréchiga and Vázquez-yanesmentioning

confidence: 99%

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confidence: 97%

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Seed traits and germination in the Cactaceae family: A review across Americas

Barrios¹,

Sánchez²,

Flores³

et al. 2020

Bot. Sci.

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“…Weber ex K. Schum., at 25 C (Lindow-López et al 2018), and for Cereus fernambucensis Lem. and Cereus albicaulis (Britton & Rose) Luetzelb., at 25 and 30 C, respectively (Meiado et al 2016).…”

Section: Resultsmentioning

confidence: 99%

Germination responses of the invasive hedge cactus (Cereus uruguayanus) to environmental factors

Panetta,

Campbell,

Brooks

et al. 2024

Weed Sci

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Hedge cactus (Cereus uruguayanus R. Kiesling; syn. Cereus hildmannianus K. Schum.) is a columnar cactus that was introduced to Australia as an ornamental plant and has since become invasive in subhumid regions of Queensland and New South Wales. Compared to its congener Cereus jamacaru DC. (which currently is invasive in both eastern and southern Africa), information on seed biology of C. uruguayanus is lacking. Experiments were conducted to study the effects of alternating day/night temperature, salt stress, water stress, and burial depth on germination and seedling emergence of four seed accessions of C. uruguayanus. Seeds were also subjected to a Controlled Aging Test (CAT) to obtain an estimate of potential persistence under field conditions. The optimum temperature regime for germination of all accessions was 30/20 C. Germination decreased with an increase in sodium chloride (NaCl) concentrations, but germination of all accessions (range 26–81%) occurred at 160 mM NaCl, indicating very high salt tolerance. Seed germination gradually decreased with an increase in water stress, but germination in all accessions (range 19–47%) occurred at -0.8 MPa. Seed viability and potential germinability were unaffected by exposure to salt level (320 mM NaCl) and water (-1.6 MPa) stress under which germination did not occur. Germination responses to all three factors were generally similar to those documented for C. jamacaru. The emergence of C. uruguayanus decreased with an increase in seed burial depth. The highest emergence (43%) was recorded for surface-sown seeds and emergence was reduced to 0 at a burial depth of 2 cm. CAT results for two seed accessions indicated that seeds of C. uruguayanus are likely to demonstrate extended (> 3 yr) persistence under field conditions, a prediction that is supported by evidence that germination of its small (2 mm) seeds is markedly reduced by burial.

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“…The promotion of germination by light is a common feature of small seeds of many plant families (Millberg et al, 2000; Barzani et al, 2012; Baskin and Baskin, 2014), including cacti (Flores et al, 2011). Seed of six species of Argentine cacti (Lindow-Lopez et al, 2018) and five species of Southern Chihuahuan desert cacti (Mascot-Gomez et al, 2020) hardly germinate or fail to germinate in the dark. Such photoblastism is known for seeds of the cacti Carnegiea gigantea (Alcorn and Kurtz, 1959), Cereus griseus (Williams and Arias, 1978), Ferocactus histrix (del Castillo, 1986) and at least 250 other taxa in the family (Rojas-Aréchiga et al, 1997; Nobel, 1988; Barrios et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Stimulatory and inhibitory effects of light on Cereus repandus (Cactaceae) seed germination are strongly dependent on spectral quality

Pritchard

2022

Seed Sci. Res.

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In small seeds, light often promotes germination and longer-term exposure to darkness reduces light sensitivity. In cacti inhabiting harsh environments, a rapid response to light exposure is potentially advantageous for seedling establishment. We exposed dark-imbibed seeds of the cactus Cereus repandus to doses of red (RED) light and far-red (FR) light. The seeds exhibited positive photoblastism to RED light. Although the initial levels of germination varied between seed lots, the sensitivity to increasing the RED dose did not. As little as 5 min per day for 4 d was sufficient to saturate the light requirement for germination. The effects of RED light were reversed by FR exposure as long as the interval between RED and FR did not extend to 2 d, by which time the seeds had ‘committed’ to germinate. Dark incubation for 1–2 weeks prior to RED exposure reduced light sensitivity in two seed lots, such that RED only promoted around 20% germination. Phytochrome is assumed to mediate the reversibility of the RED:FR response. High sensitivity to light spectral quality suggests that seeds of C. repandus are able to germinate quickly in high-quality microsites, but seed burial or shading may commit the seeds to form a soil seed bank. The light characteristics of the germination trait in this species are typical of many small seeded species of the drylands.

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Effects of alternating temperature on cactus seeds with a positive photoblastic response

Cited by 11 publications

References 8 publications

Seed traits and germination in the Cactaceae family: A review across Americas

Seed traits and germination in the Cactaceae family: A review across Americas

Germination responses of the invasive hedge cactus (Cereus uruguayanus) to environmental factors

Stimulatory and inhibitory effects of light on Cereus repandus (Cactaceae) seed germination are strongly dependent on spectral quality

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