Comparison of the seed dormancy and germination characteristics of six Clematis species from South Korea

Jang, Bo Kook; Park, Kyungtae; Lee, Sang Yeob; Lee, Hayan; Song, Se-Kyu; Kim, Jin‐Ki; Lee, Cheol Hee; Cho, Ju Sung

doi:10.1016/j.scienta.2022.111488

Cited by 9 publications

(12 citation statements)

References 29 publications

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“…Plant hormones, their interactions, and molecular mechanisms are involved in the regulation of the molecular processes controlling seed dormancy release and germination (Wang et al 2022). ABA and GA are the main plant hormones that simultaneously and antagonistically mediate the onset, maintenance, and termination of dormancy, that is, ABA is a hormone known to induce dormancy, while GA is one group of the hormones that break dormancy and initiate seed germination (Li et al 2022;Wu et al 2022;Kiradjiev and Band 2023;Jang et al 2023). Of the 136 GAs that have been identified, only 4 are active, and GA 3 is one of them (Nelson et al 2023).…”

Section: Discussionmentioning

confidence: 99%

“…Seed dormancy plays a major role in regulating the timing of germination and is a transient phenomenon and has, therefore, the intrinsic property to be alleviated (Zhang et al 2022; Jurdak et al 2022). Nevertheless, seed dormancy is considered a hindrance in the agricultural industry (Jang et al 2023). Water uptake transportation is essential for the resumption of metabolic activity for processing starch, proteins, enzymes, and other macromolecules, which provide the necessary nutrients for seed germination, so imbibition is the initial and most important stage of seed germination (Lechowska et al 2019; Zhu et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Even the integrated analysis of transcriptome and metabolome reveals that exogenous GA has a substantial effect on stem height and secondary metabolites in forage ramie (Jie et al 2023). Jang et al (2023) illustrated that the ABA and GA balance is not an absolute factor in determining dormancy. Binenbaum et al (2023) revealed that GA is required for root suberization and that GA and ABA can act non-antagonistically.…”

Section: Introductionmentioning

confidence: 99%

“…Jang et al (2023) illustrated that the ABA and GA balance is not an absolute factor in determining dormancy. Binenbaum et al (2023) revealed that GA is required for root suberization and that GA and ABA can act non‐antagonistically.…”

Section: Introductionmentioning

confidence: 99%

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Ascorbic acid releases dormancy and promotes germination by an integrated regulation of abscisic acid and gibberellin in Pyrus betulifolia seeds

Niu,

Xu,

Zong

et al. 2024

Physiologia Plantarum

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Seed dormancy is an important life history state in which intact viable seeds delay or prevent germination under suitable conditions. Ascorbic acid (AsA) acts as a small molecule antioxidant, and breaking seed dormancy and promoting subsequent growth are among its numerous functions. In this study, a germination test using Pyrus betulifolia seeds treated with exogenous AsA or AsA synthesis inhibitor lycorine (Lyc) and water absorption was conducted. The results indicated that AsA released dormancy and increased germination and 20 mmol L−1 AsA promoted cell division, whereas Lyc reduced germination. Seed germination showed typical three phases of water absorption; and seeds at five key time points were sampled for transcriptome analysis. It revealed that multiple pathways were involved in breaking dormancy and promoting germination through transcriptome data, and 12 differentially expressed genes (DEGs) related to the metabolism and signal transduction of abscisic acid (ABA) and gibberellins (GA) were verified by subsequent RT‐qPCR. For metabolites, exogenous AsA increased endogenous AsA and GA3 but reduced ABA and the ABA/GA3 ratio. In addition, three genes regulating ABA synthesis were downregulated by AsA, while five genes mediating ABA degradation were upregulated. Taken together, AsA regulates the pathways associated with ABA and GA synthesis, catalysis, and signal transduction, with subsequent reduction in ABA and increase in GA and further the balance of ABA/GA, ultimately releasing dormancy and promoting germination.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ascorbic acid releases dormancy and promotes germination by an integrated regulation of abscisic acid and gibberellin in Pyrus betulifolia seeds

Niu,

Xu,

Zong

et al. 2024

Physiologia Plantarum

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“…Treatment with exogenous GA in some dormant seeds can use this opportunity to break dormancy, allowing for faster seedling production. Exogenous GA treatment was effective for breaking dormancy in Cinnamomum migao ( Chen et al., 2022 ), Leymus chinensis ( He et al., 2016 ), and Thalictrum Uchiyama ( Lee et al., 2018 ) seeds, although Clematis terniflora ( Jang et al., 2023 ) and Ferrula assa-foetida ( Hassani et al., 2009 ) seeds were unaffected. Many previous studies have applied GA to promote dormancy breakage, although responses to this have shown variation with plant species, dormancy class, forms of GA, concentration, and treatment length.…”

Section: Introductionmentioning

confidence: 99%

Exogenous gibberellin can effectively and rapidly break intermediate physiological dormancy of Amsonia elliptica seeds

Lee

Park²,

Jang³

et al. 2022

Front. Plant Sci.

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Accelerated global warming is leading to the loss of plant species diversity, and ex situ preservation of seeds is becoming an increasingly important aspect of species conservation. However, information on dormancy and germination is lacking in many endangered species. Amsonia elliptica (Apocynaceae) is the only Amsonia species native to Korea, and the South Korean Ministry of Environment has designated it Class II endangered wildlife. Nevertheless, the dormancy class and the dormancy breaking method for seeds of this species for germination are not precisely known. We identified the structure of A. elliptica seeds and the causes of dormancy, which inhibits germination. In addition, we tried to develop an effective germination promotion method by testing the wet stratified condition, which breaks dormancy, and the form of gibberellin that can replace it. Fresh seeds of A. elliptica imbibe water, but the covering layers (endosperm and seed coat) inhibit germination by mechanically restricting the embryo. Initial germination tests confirmed low embryo growth potential and physiological dormancy (PD). Restriction due to the covering layer was eliminated by seed scarification, and abnormal germination was observed. After 12 weeks of cold moist stratification at 4°C, only 12% of seeds germinated. However, 68.8% of seeds subjected to 8 weeks of warm moist stratification followed by 12 weeks of cold stratification germinated, indicating that warm stratification pretreatment before cold stratification is effective in breaking dormancy. A. elliptica seeds exhibited intermediate PD. Furthermore, 61.3% of seeds soaked in 500 mg/L GA4+7 for 14 days and incubated at 25/15°C germinated. Therefore, GA4+7 rapidly broke the dormancy of A. elliptica seeds compared with warm plus cold stratification treatment, thus providing an efficient method for seedling production.

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Fruit dehiscence mechanism and release of dimorphic seeds with different germination properties in Commelina erecta

Panigo,

Oggero,

Dellaferrera

et al. 2023

Protoplasma

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Comparison of the seed dormancy and germination characteristics of six Clematis species from South Korea

Cited by 9 publications

References 29 publications

Ascorbic acid releases dormancy and promotes germination by an integrated regulation of abscisic acid and gibberellin in Pyrus betulifolia seeds

Ascorbic acid releases dormancy and promotes germination by an integrated regulation of abscisic acid and gibberellin in Pyrus betulifolia seeds

Exogenous gibberellin can effectively and rapidly break intermediate physiological dormancy of Amsonia elliptica seeds

Fruit dehiscence mechanism and release of dimorphic seeds with different germination properties in Commelina erecta

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