Reactive oxygen species induced by cold stratification promote germination of Hedysarum scoparium seeds

Su, Liqiang; Qinying, Lan; Pritchard, Hugh W.; Xue, Hua; Wang, Xiaofeng

doi:10.1016/j.plaphy.2016.10.025

Cited by 61 publications

(22 citation statements)

References 36 publications

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“…During cold stratification, expression of CYP707As that participate in ABA catabolism, and AtGA3ox1 that is involved in GA synthesis is elevated, leading to a high GA/ABA ratio, which promotes seed germination (Okamoto et al 2006; Su et al 2016; Chen et al 2019). The same expression control pattern was found with the atper1 mutant that has a dysfunctional seed‐specific peroxiredoxin (Chen et al 2019).…”

Section: Abscisic Acid In Seed Developmentmentioning

confidence: 99%

Abscisic acid dynamics, signaling, and functions in plants

Chen

Bressan

et al. 2020

JIPB

1,044

628

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Abscisic acid (ABA) is an important phytohormone regulating plant growth, development, and stress responses. It has an essential role in multiple physiological processes of plants, such as stomatal closure, cuticular wax accumulation, leaf senescence, bud dormancy, seed germination, osmotic regulation, and growth inhibition among many others. Abscisic acid controls downstream responses to abiotic and biotic environmental changes through both transcriptional and posttranscriptional mechanisms. During the past 20 years, ABA biosynthesis and many of its signaling pathways have been well characterized. Here we review the dynamics of ABA metabolic pools and signaling that affects many of its physiological functions.

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Section: Abscisic Acid In Seed Developmentmentioning

confidence: 99%

Abscisic acid dynamics, signaling, and functions in plants

Chen

Bressan

et al. 2020

JIPB

1,044

628

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“…A aplicação de ABA não só inibe significativamente a germinação como reduz a taxa de H 2 O 2 em sementes. E a regulação do conteúdo de ABA e o aumento de GA sugere uma interação com as EROs (Su et al 2016). Por exemplo, a produção de H 2 O 2 pode ser induzida por GA em células de aleurona, e suprimida por ABA.…”

Section: A Importância Das Eros Para As Sementesunclassified

As sementes de Eugenia spp. (Myrtaceae) e seus novos conceitos sobre propagação

Amorim

Silva

Barbedo

2020

Hoehnea

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RESUMO O comportamento padrão esperado para as sementes, seja por leigos ou mesmo especialistas no assunto, é o de uma estrutura seca que, colocada em meio com suficiente disponibilidade de água, germina e produz uma nova planta, preservando a espécie. Contudo, há um gigantesco número de espécies que possuem sementes com comportamento totalmente diferente. Sementes que não podem sequer serem secas, denominadas recalcitrantes, são dispersas úmidas no meio e, ao longo da evolução das espécies, desenvolveram sistemas alternativos àqueles padrões esperados. Nesta revisão, procuramos demonstrar um dos mais complexos e interessantes sistemas de preservação de espécies com sementes recalcitrantes, nas espécies do gênero Eugenia, da família Myrtaceae. São abordados tanto a capacidade em regenerar embriões a partir de tecidos cotiledonares, quanto o controle extremamente eficiente em não desperdiçar material de reserva, evitando germinações simultâneas na mesma semente. Neste controle parecem estar envolvidas as espécies reativas de oxigênio (EROs), que também são revistas neste artigo.

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“…Cold stratification, incubation with gibberellic acid (hormone priming) and seed coat scarification has been shown to be successful in enhancing the germination rate of rosemary seeds having hard seed coat, embryo, and physiological seed dormancy [12,[37][38][39][40]. This could be a useful approach to apply to seeds such as buffaloberry, which also has multiple seed dormancies.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanoparticles Functionalized with Carboxylic Acid Improved the Germination and Seedling Vigor in Upland Boreal Forest Species

Ali

Sobze

et al. 2020

Nanomaterials

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Nanopriming has been shown to significantly improve seed germination and seedling vigor in several agricultural crops. However, this approach has not been applied to native upland boreal forest species with complex seed dormancy to improve propagation. Herein, we demonstrate the effectiveness of carbon nanoparticles functionalized with carboxylic acids in resolving seed dormancy and improved the propagation of two native upland boreal forest species. Seed priming with carbon nanoparticles functionalized with carboxylic acids followed by stratification were observed to be the most effective in improving germination to 90% in green alder (Alnus viridis L.) compared to 60% in the control. Conversely, a combination of carbon nanoparticles (CNPs), especially multiwall carbon nanoparticles functionalized with carboxylic acid (MWCNT–COOH), cold stratification, mechanical scarification and hormonal priming (gibberellic acid) was effective for buffaloberry seeds (Shepherdia canadensis L.). Both concentrations (20 µg and 40 µg) of MWCNT–COOH had a higher percent germination (90%) compared to all other treatments. Furthermore, we observed the improvement in germination, seedling vigor and resolution of both embryo and seed coat dormancy in upland boreal forest species appears to be associated with the remodeling of C18:3 enriched fatty acids in the following seed membrane lipid molecular species: PC18:1/18:3, PG16:1/18:3, PE18:3/18:2, and digalactosyldiacylglycerol (DGDG18:3/18:3). These findings suggest that nanopriming may be a useful approach to resolve seed dormancy issues and improve the seed germination in non-resource upland boreal forest species ideally suited for forest reclamation following resource mining.

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Reactive oxygen species induced by cold stratification promote germination of Hedysarum scoparium seeds

Cited by 61 publications

References 36 publications

Abscisic acid dynamics, signaling, and functions in plants

Abscisic acid dynamics, signaling, and functions in plants

As sementes de Eugenia spp. (Myrtaceae) e seus novos conceitos sobre propagação

Carbon Nanoparticles Functionalized with Carboxylic Acid Improved the Germination and Seedling Vigor in Upland Boreal Forest Species

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