Seed germination under osmotic stress across different wild populations of mountain rye (<i>Secale strictum</i> (C.Presl) C.Presl))

Rossi, Graziano; Guzzon, Filippo; Bickler, Charlotte; Cauzzi, Paolo; Martino, Luciano Di; Cecco, Valter Di; Domina, Gianniantonio; Gargano, Domenico; Vagge, I.; Orsenigo, Simone; Müller, Jonas V.

doi:10.1080/11263504.2020.1857869

Cited by 6 publications

(6 citation statements)

References 47 publications

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“…Our data also highlighted that increasing aridity can affect the rate of seed germination and seedling vigour and survival. This is congruent with current knowledge about the limitations caused by drought-related osmotic stress on early plant life stages ( Orsenigo et al 2017 ; Rossi et al 2020 ).…”

Section: Discussionsupporting

confidence: 90%

“… Dickman et al (2019) recorded an enhanced adaptation to drought in seeds from marginal low-elevation populations of M. laciniatus ; while Abeli et al (2015) found latitude-driven tolerance to varying water availability between northern and peripheral southern populations of S. suecica . Furthermore, variations in seed tolerance to osmotic stress were found across the range of the crop wild relatives Aegylops geniculata and Secale strictum ( Orsenigo et al 2017 ; Rossi et al 2020 ). The previous studies, however, did not experimentally test for adaptation to CC in small and isolated peripheral populations through interpopulation crossing.…”

Section: Discussionmentioning

confidence: 99%

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Do marginal plant populations enhance the fitness of larger core units under ongoing climate change? Empirical insights from a rare carnation

et al. 2022

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Assisted gene flow (AGF) can restore fitness in small plant populations. Due to climate change, current fitness patterns could vary in the future ecological scenario, as highly performant lineages can undergo maladaptation under the new climatic contexts. Peripheral populations have been argued to represent a potential source of species adaptation against climate change, but experimental evidence is poor. This paper considers the consequences of within- and between-population mating between a large core population and the southernmost population the rare Dianthus guliae Janka, to evaluate optimal AGF design under current and future conditions. We performed experimental self-pollinations and within- and between-population cross-pollinations to generate seed material and test its adaptive value to aridity. Seed germination, seedling growth and survival were measured under current and expected aridity. Effects of population type, pollination treatment, and stress treatment on fitness components were analysed by generalized linear models. Relative measures of inbreeding depression and heterosis were taken under different stress treatments. Self-pollination reduced fitness for all the considered traits compared to within- and between-population cross-pollination. Under current aridity regime, the core population expressed higher fitness, and a larger magnitude of inbreeding depression. This indicated the core unit is close to its fitness optimum and could allow for restoring the fitness of the small peripheral population. Contrarily, under increased aridity, the fitness of outbred core lineages decreased, suggesting the rise of maladaptation. In this scenario, AGF from the small peripheral population enhanced the fitness of the core unit, whereas AGF from the core population promoted a fitness loss in the peripheral population. Hence, the small peripheral population could improve fitness of large core units versus climate change, while the contrary could be not true. Integrating reciprocal breeding programs and fitness analyses under current and predicted ecological conditions can support optimal AGF design in a long-term perspective.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Do marginal plant populations enhance the fitness of larger core units under ongoing climate change? Empirical insights from a rare carnation

et al. 2022

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“…Landraces are one of the most threatened components of agrobiodiversity worldwide, facing the risk of genetic erosion [15]. Despite their progressive abandonment, cereal landraces still continue to be important in agricultural production, mainly in marginal lands and mountain areas where modern hybrids lose their competitive advantage [18]: their adaptability to unfavourable conditions contributes to yield stability [19] and to abiotic and biotic stress tolerance [20,21,32].…”

Section: Discussionmentioning

confidence: 99%

Agriculture in Marginal Areas: Reintroduction of Rye and Wheat Varieties for Breadmaking in the Antrona Valley

et al. 2022

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In marginal lands, cereal landraces continue to be important in agricultural production, whereas hybrids lose their competitive advantage. In this context, selection for adaptation to each environment is particularly important in crops grown under unfavourable conditions, e.g., mountain areas. In this work, from a panel of traditional and modern varieties, mixtures and evolutionary populations, a randomised block experiment was established to select the most productive and suitable wheat and rye varieties specific for the Antrona Valley. The nutritional analysis of each flour was carried out. The results obtained in two years of varietal comparison suggested that rye is more suitable than wheat for growing in this environment: Alpina rye showed the highest yield/m2 and the highest ash content (1.87% ± 0.03%; p < 0.05) compared to other varieties, indicating it as suitable for the baking process. Among wheats, San Pastore showed the highest number of ears/m2 (411 and 350; p < 0.05) compared to others. However, in a context of climate change, the cultivation of Solibam could ensure yield stability, thanks to the high variability within the evolutionary population. Overall, our results demonstrated the possible reintroduction of the cereal supply chain in the Valley and the resumption of the historic rye bread production.

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“…It was found that certain wild rye populations exhibit drought tolerance during germination, even at −1.6 MPa osmotic stress, suggesting their potential as resilient crop. Variability in key traits, such as seed size and germination, highlights opportunities for improving rye cultivation, especially in arid regions (Rossi et al 2022). Thirteen winter diploid rye varieties were assessed for drought tolerance and adaptability in the Northwestern Russian region.…”

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confidence: 99%

Climate Change and Rye (Secale cereale L.) Production: Challenges, Opportunities and Adaptations

Ghafoor,

Karim,

Studnicki

et al. 2024

J Agronomy Crop Science

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This comprehensive review examined the intricate relationship between climate change and rye (Secale cereale L.) production, focusing on the multifaceted challenges and opportunities posed by changing environmental conditions. Rye is a versatile cereal crop cultivated in temperate regions and is known for its resilience and adaptability to adverse growing conditions. However, as global temperatures and atmospheric CO2 concentrations rise, the effects of climate change on rye growth, yield and grain quality become increasingly apparent. In this review, we summarised the recent research findings on various aspects of rye production and quality under climate change, focusing on factors such as temperature (e.g., increasing temperature) resilience, and viability of rye production in the face of ongoing climate challenges, altered rainfall patterns (changing rainfall distributions with decreasing rainfall in the spring and early summer months as well as heavy rainfall events), biotic stress, agronomic practices and greenhouse gas emissions. Exploring the dynamic interplay among climate change, soil quality, biotic stressors and plant–microbe interactions reveals insights into the response of rye to environmental changes. These interactions shape the complex dynamics that influence the adaptation of rye to evolving environmental conditions. Implications for food security, agricultural sustainability and future research directions are also discussed, highlighting the urgent need for adaptive strategies to ensure the resilience and viability of rye production in the face of ongoing climate challenges.

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Seed germination under osmotic stress across different wild populations of mountain rye (Secale strictum (C.Presl) C.Presl))

Cited by 6 publications

References 47 publications

Do marginal plant populations enhance the fitness of larger core units under ongoing climate change? Empirical insights from a rare carnation

Do marginal plant populations enhance the fitness of larger core units under ongoing climate change? Empirical insights from a rare carnation

Agriculture in Marginal Areas: Reintroduction of Rye and Wheat Varieties for Breadmaking in the Antrona Valley

Climate Change and Rye (Secale cereale L.) Production: Challenges, Opportunities and Adaptations

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