Effects of climate change on plant regeneration from seeds in the cold deserts of Central Asia

Lu, Juanjuan; Tan, Dunyan; Baskin, Carol C.; Baskin, Jerry M.

doi:10.1016/b978-0-12-823731-1.00003-2

Cited by 2 publications

(2 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…sufficient moisture). Soil moisture was unlikely to inhibit seedling emergence during the spring and autumn germination seasons in our study, which is different from the situation in those areas with unpredictable rainfall, such as arid or semi‐arid areas (Lu et al ., 2022). By contrast, there could be a potential that seed mortality risk drastically increases and results in a trade‐off between persistence and emergence in highly variable environments.…”

Section: Discussionmentioning

confidence: 99%

A long‐term experiment reveals no trade‐off between seed persistence and seedling emergence

Chen,

Hu,

Baskin

et al. 2023

New Phytologist

Self Cite

View full text Add to dashboard Cite

Summary Information on seed persistence and seedling emergence from the soil seed bank is critical for understanding species coexistence and predicting community dynamics. However, quantifying seed persistence in the soil is challenging; thus, its association with other life‐history traits is poorly known on a broad scale. Using germination phenology for 349 species in a 42‐yr experiment, we quantified the persistence–emergence correlations and their associations with intrinsic regeneration traits using Bayesian phylogenetic multilevel models. We showed no trade‐off between seed persistence and seedling emergence. Physically dormant seeds were more persistent but exhibited lower emergence than nondormant seeds. Monocarpic species had both higher persistence and emergence than polycarpic species. Seed mass posed a marginal proxy for persistence, while emergence almost doubled from the smallest to the largest seeds. This study challenges the traditional assumption and is the first demonstration of noncorrelation between persistence and emergence, probably owing to the complexity of regenerative strategies. Species with short persistence and low emergence would be the most vulnerable for in situ conservation. Our analyses of this unique, long‐term dataset provide a strong incentive for further experimental studies and a rich data resource for future syntheses.

show abstract

Section: Discussionmentioning

confidence: 99%

A long‐term experiment reveals no trade‐off between seed persistence and seedling emergence

Chen,

Hu,

Baskin

et al. 2023

New Phytologist

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, even in species with nondormant seeds, no pre-dispersal germination occurs in late autumn. An important reason for lack of pre-dispersal (and even post-dispersal) germination in autumn in the cold deserts of Central Asia is lack of rainfall during autumn (Lu et al, 2022). Another reason for lack of germination in autumn is that freshly-matured seeds have physiological dormancy, e.g., two of the three seed morphs of Atriplex centralasiatica (Wang et al, 2020), two of three seed morphs of Salsola affinis (Wei et al, 2008), one of four seed morphs of S. brachiata (Baskin et al, 2014), the black seed morph of the dimorphic Suaeda aralocaspica (Wang et al, 2008), and both the two basicarps and the aerial dispersal units of Ceratocarpus arenarius (Lu et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Non-viviparous pre-dispersal seed germination in Amaranthaceae in the cold deserts of Central Asia

Liu

Han

et al. 2022

Front. Ecol. Evol.

Self Cite

View full text Add to dashboard Cite

In the broad context of understanding the relationship between timing of seed germination and adaptation of a plant species to its habitat, the purpose of this study was to purse an observation of pre-dispersal seed germination of Salsola brachiata (Amaranthaceae) in late winter 2021 in the Amaranthaceae species-rich cold deserts in northwest China (Central Asia). We searched for pre-dispersal germination in species of Amaranthaceae growing in sand dunes (S), salt deserts (SD) and gravel deserts (GD). We examined 69 species in 155 populations in autumn 2021 and 52 species in 12 populations in early spring 2022. No seeds of any of the 69 species germinated on the mother plants in autumn 2021, while 30 of 52 species (57.7%) did so during snowmelt in early spring 2022. The rank order of species with few to many seeds germinated on the mother plants was annuals (66.7%) > small shrubs (23.3%) > small trees (6.7%) > shrubs (3.3%). The number of species in S, SD, and GD with pre-dispersal germinated seeds was 16 of 27 (59.3%), 15 of 31 (48.4%), and 15 of 30 (50.0%), respectively. The high species occurrence of pre-dispersal germination in early spring suggested that it might be adaptive in the unpredictable-rainfall growing-season environment of the cold deserts of Central Asia, a center of diversity of Amaranthaceae. However, preliminary studies on seedling/juvenile survival of S. brachiata showed that those from post-dispersal soil-germinated seeds had the best survival, suggesting that pre-dispersal seed germination may be maladaptive.

show abstract

Effects of climate change on plant regeneration from seeds in the cold deserts of Central Asia

Cited by 2 publications

References 68 publications

A long‐term experiment reveals no trade‐off between seed persistence and seedling emergence

A long‐term experiment reveals no trade‐off between seed persistence and seedling emergence

Non-viviparous pre-dispersal seed germination in Amaranthaceae in the cold deserts of Central Asia

Contact Info

Product

Resources

About