Direct Effects on Seed Germination of 17 Tree Species under Elevated Temperature and CO2 Conditions

Kim, Du Hyun; Han, Sim Hee

doi:10.1515/biol-2018-0019

Cited by 14 publications

(8 citation statements)

References 52 publications

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“…Temperature is widely known as one of the most important environmental factors regulating seed dormancy and germination [12]. Previous studies reported that the optimal temperature requirement for germination is species-specific [54,55]. Such patterns have been described for different ecosystems worldwide, including Arabian deserts [56], Mediterranean systems [57] and tropical forests [58].…”

Section: Discussionmentioning

confidence: 98%

Characterization of Invasiveness, Thermotolerance and Light Requirement of Nine Invasive Species in China

Bhatt

Chen

Pompelli

et al. 2023

Plants

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Understanding responsible functional traits for promoting plant invasiveness could be important to aid in the development of adequate management strategies for invasive species. Seed traits play an important role in the plant life cycle by affecting dispersal ability, formation of the soil seed bank, type and level of dormancy, germination, survival and/or competitive ability. We assessed seed traits and germination strategies of nine invasive species under five temperature regimes and light/dark treatments. Our results showed a considerable level of interspecific variation in germination percentage among the tested species. Both cooler (5/10 °C) and warmer (35/40 °C) temperatures tended to inhibit germination. All study species were considered small-seeded, and seed size did not affect germination in the light. Yet, a slightly negative correlation was found between germination in the dark and seed dimensions. We classified the species into three categories according to their germination strategies: (i) risk-avoiders, mostly displaying dormant seeds with low G%; (ii) risk-takers, reaching a high G% in a broad range of temperatures; (iii) intermediate species, showing moderate G% values, which could be enhanced in specific temperature regimes. Variability in germination requirements could be important to explain species coexistence and invasion ability of plants to colonize different ecosystems.

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Section: Discussionmentioning

confidence: 98%

Characterization of Invasiveness, Thermotolerance and Light Requirement of Nine Invasive Species in China

Bhatt

Chen

Pompelli

et al. 2023

Plants

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“…ex Endl., showed the maximum seed germination (90%) at 15 or 20 0 C with or without light, whereas at 25-30 0 C, there was a reduction in the seed germination as well as the emergence of the radicle was also delayed (12). Similar studies conducted on Pinus densiflora, P. thunbergii and Maackia amurensis showed that high temperature not only reduced percent germination but also delay it, representing that seed germination of Pinus species is highly sensitive to high temperature (13,14).…”

Section: Impact On Seed Germinationmentioning

confidence: 63%

Impact of Elevated Temperature and Carbon dioxide on Seed Physiology and Yield

Talwar

Bamel²,

Prabhavathi³

2023

Plant Sci. Today

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Food security is of utmost priority to humankind. This is the implication of various interconnected factors that lead to climate change. Elevated temperature and carbon dioxide levels are just 2 of these. The nutrient is an inseparable aspect of food. The change in climate is posing threat not only to the amount of available food but also to the nutrients laden in the food items. Seeds are the miniature form of plants and are a reflection of their future health and nutritional status. The changes in environmental factors predominantly challenge the growth and development of a seed. This review is an attempt to understand the impact of elevated CO2 and temperature on seed germination, the nutritional status of the seed and the yield in form of total seed production. It gives a direction for analysis and future studies that may use the latest available tools like gene editing to tackle and counteract the retarding effect of climate change on these parameters of seed, thereby offering a climate resilient agriculture.

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“…Moreover, [25] mention that CO 2 concentration did not have a significant effect on Arabidopsis thaliana seed emergence, with seeds subjected to high temperatures exhibiting the fastest germination rate. In the present work, temperature was essential in the regulation of seed emergence; when the temperature increased, so did the emergence rate, due to temperature acting as a determining factor for enzyme activation or deactivation processes [26,27]. The physiological response of seeds to this factor is crucial for emergence and plant development, and once the optimum temperature point is reached, the emergence process diminishes.…”

Section: Seedling Emergencementioning

confidence: 67%

High Temperature and Elevated CO2 Modify Phenology and Growth in Pepper Plants

et al. 2022

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The aim of this study was to determine the effect of temperature and CO2 on seed emergence, seedling quality, and phenological stage of Capsicum chinense and Capsicum annum cultivated in four controlled growth chambers (C1: 30 °C and 400 μmol CO2 mol−1; C2: 40 °C and 1200 μmol CO2 mol−1; C3: 30 °C and 1200 μmol CO2 mol−1; C4: 40 °C and 400 μmol CO2 mol−1). Neither temperature nor elevated CO2 influenced seed emergence, although differences were observed in seedling mortality, with high temperature affecting seedling survival in both species; the mortality rate at 40 °C was 20 and 53% in C. annuum and 45 and 58% in C. chinense at 400 and 1200 μmol CO2 mol−1, respectively. Differences were also observed in growth parameters, where positive effects were observed on leaf area, which reached 45.9 cm2 in C. annuum and 23.9 cm2 in C. chinense with elevated CO2 at 30 °C, but negative effects were observed with high temperature. CO2 enrichment increased flower and fruit production per plant. However, high temperature delayed flower phenology, increased flower abortion and inhibited fruit set. Elevated CO2 counteracted the detrimental effects of high temperature on growth parameters and flower number, but this was not sufficient to prevent flower abortion and the detrimental morphological characteristics of fruit caused by a temperature of 40 °C.

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Direct Effects on Seed Germination of 17 Tree Species under Elevated Temperature and CO2 Conditions

Cited by 14 publications

References 52 publications

Characterization of Invasiveness, Thermotolerance and Light Requirement of Nine Invasive Species in China

Characterization of Invasiveness, Thermotolerance and Light Requirement of Nine Invasive Species in China

Impact of Elevated Temperature and Carbon dioxide on Seed Physiology and Yield

High Temperature and Elevated CO2 Modify Phenology and Growth in Pepper Plants

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