Molecular characterization of the acquisition of longevity during seed maturation in soybean

Lima, Juliana Joice Pereira; Buitink, Julia; Lalanne, David; Rossi, Rubiana Falopa; Pelletier, Sandra; Silva, Edvaldo Aparecido Amaral da; Leprince, Olivier

doi:10.1371/journal.pone.0180282

Cited by 64 publications

(66 citation statements)

References 70 publications

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“…In our previous work (Pereira Lima et al, 2017), seed longevity was assessed in detail from stage 7.2 onwards since only 20% of immature seeds collected at stage 7.1 were desiccation-tolerant. To assess the increase in seedling emergence during this time period, additional phenological stages between 7.1 and 7.2, representing 8 days of maturation, were included in this study (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…To monitor the seed development, 800 flowers were tagged. Pods were harvested manually and developing seeds were sorted into homogeneous lots according to different phenological stages based on the morphology characteristics of pods and seeds and seed age according to Fehr and Caviness (1977) adapted by Pereira Lima et al (2017). The mean temperature and rainfall for the experiment period were 23.3 °C and 1037 mm, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…In soybean, longevity is progressively acquired during seed maturation from phenological stage 7.2 onwards, a few days after the acquisition of desiccation tolerance and shortly before end of seed filling and onset of maturation drying (Pereira Lima et al, 2017). Thereafter, longevity increases two-fold until stage R9 corresponding to dry mature seeds (Zanakis et al, 1994;Pereira Lima et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Thereafter, longevity increases two-fold until stage R9 corresponding to dry mature seeds (Zanakis et al, 1994;Pereira Lima et al, 2017). There is increasing evidence that synthesis of protective mechanisms that enhance longevity are induced sequentially and increase progressively during late seed maturation (Probert et al, 2007;Righetti et al, 2015;Leprince et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In the legume Medicago truncatula, LEA genes are induced during seed filling but a specific set of LEA polypeptides accumulate later in conjunction with longevity (Chatelain et al, 2012). In soybean, Pereira Lima et al (2017) showed that the longevity increases concomitantly with increased level in transcripts encoding heat shock proteins and heat shock factors and increased content of raffinose family oligosaccharides (RFO), both contributing to resistance against accelerated ageing (Tejedor-Cano et al, 2010). Therefore, it is likely that developing seeds of soybean harvested at different maturity stages are endowed with different amounts of protective compounds.…”

Section: Introductionmentioning

confidence: 99%

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Late seed maturation improves the preservation of seedling emergence during storage in soybean

et al. 2018

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-Long-term survival during dry storage or longevity is a pre-requisite to avoid deterioration, leading to loss of vigor. Longevity is routinely evaluated by the ability to germinate after storage. It increases progressively during seed maturation, after the acquisition of desiccation tolerance. However, the capacity to germinate represents only a part of the success of crop establishment. How seed maturation affects the resistance of several traits, as vigor, associated with seedling establishment, against deterioration was evaluated during seed filling and post-abscission phase of soybean BRS 284 seeds. Three new phenological stages between 7.1 and 7.2 (7.1.1, 7.1.2 and 7.1.3) were introduced to capture the rapid increase in seed longevity. Germination speed started to be affected at 7-14 days after storage depending on the stages. The delay on germination increased with maturation from 7.1.3 to dry mature seeds. The time to 50% loss of elongation capacity of both organs during storage was similar to that of loss of germination. Also, it increased steadily during seed maturation after mass maturity and harvest maturity stages, highlighting the importance of the late phase of seed maturation for building seed vigor.Index terms: Glycine max, elongation, hypocotyl, longevity, maturation.Maturação tardia da semente preserva a emergência de plântulas de soja submetidas ao armazenamento RESUMO -A sobrevivência durante o armazenamento ou longevidade é pré-requisito para evitar a deterioração, que leva à perda de vigor. A longevidade é rotineiramente avaliada pela habilidade da semente em germinar depois do armazenamento, que aumenta progressivamente durante a maturação depois da aquisição da tolerância à dessecação. No entanto, a germinação representa somente uma parte do processo de estabelecimento da planta. Foi avaliado como a maturação afeta a resistência de várias características, como vigor, relacionadas ao estabelecimento das plântulas em sementes de soja da variedade BRS 284. Três novos estádios entre 7.1 e 7.2 (7.1.1, 7.1.2 e 7.1.3) foram introduzidos para capturar o rápido aumento na longevidade das sementes. O armazenamento induziu uma queda na velocidade de germinação a partir de 7-14 dias de armazenamento, dependendo do estádio, e essa queda diminuiu com a maturação, a partir do estádio 7.1.3. O tempo para perda de 50% na capacidade de alongamento de ambos os órgãos foi similar àquele observado para capacidade de germinação. Além disso, esse tempo aumentou de forma constante durante o período de maturação, demonstrando a importância das fases finais de maturação da semente na construção do vigor.Termos para indexação: Glycine max, alongamento, hipocótilo, longevidade, maturação.1

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late seed maturation improves the preservation of seedling emergence during storage in soybean

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Physiological components of seed quality in runner‐type peanut during seed formation

Moreno,

Santos,

Tubbs

et al. 2023

Agronomy Journal

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Seed is one of the most expensive costs in peanut (Arachis hypogaea L.) production, and the use of high‐quality seed is important to provide the greatest yield potential. Physiological seed quality, represented by a combination of germination, vigor, desiccation tolerance, and longevity, is progressively acquired during seed formation. When all components reach their maximum, seeds achieve the highest physiological quality. The objectives of this study were to identify the acquisition pattern of the physiological components of seed quality, to determine the timing in which the maximum physiological quality is achieved during seed formation, and to define the timing in which seeds acquire and further break primary dormancy in peanut. A 3‐year field study was conducted using the cultivar Georgia‐06G. Plants were inverted when growing degree days reached 2500 for all fields, and a maturity board profile was used to classify the pods into the maturity classes. Seeds were split into two groups, treated and non‐treated, with ethephon to break potential primary dormancy. Water content, germination, vigor, desiccation tolerance, and longevity were tested in the seeds. Seed mass maturity was reached in the “orange” class. Maximum germination and vigor were achieved between “brown 1” and “brown 2”. Primary dormancy was acquired between “orange” and “brown 1” and broken after artificial drying. Maximum desiccation tolerance was observed in “brown 1”, whereas maximum longevity was achieved only in “black 2”. Considering all physiological quality components, peanut seeds achieved the maximum physiological quality between “brown 1” and “brown 2”.

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First the seed: Genomic advances in seed science for improved crop productivity and food security

Dwivedi¹,

Spillane

Lopez

et al. 2021

Crop Science

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Seeds are valuable sources of carbohydrates, lipids, proteins, fibers, minerals, and vitamins. They provide energy and nutrition to germinating seedlings, food to humans, feed to livestock and feedstocks to industry. High-throughput analyses of gene expression in crops has identified many candidate genes associated with seed dormancy, longevity, germination, and vigor. In this review, we cover the latest research focusing on such key seed traits. Transcriptome analyses of time-courses of seed filling have identified sets of genes expressed at different stages of this process. The potential role of epigenetics (including seed-endosperm imprinted genes) in regulating seed development and chemistry is highlighted herein. We also discuss how advances in genomics and seed biology are facilitating the unravelling of associations between seed traits with genebank accessions and gene sequences, including how functional research can accelerate the discovery of allelic variants. Such knowledge of functional effects relating to gene variants is necessary for more efficient and cost-effective management of genetic resources or for redesigning crops with specific seed characteristics. For instance, genebank curators may assess seed viability by monitoring changes in gene expression of biomarker genes in dry seed samples to decide germplasm regeneration and assess genetic integrity of collections by monitoring changes in This article is protected by copyright. All rights reserved. diversity and allele frequencies between samples of same accession stored in genebanks. We highlight that resistance to preharvest sprouting can be enhanced through genomicsassisted breeding in otherwise nondormant rice and wheat cultivars, while pimt, another valuable marker for seed longevity, may be deployed to enhance seed vigor in crops.

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Molecular characterization of the acquisition of longevity during seed maturation in soybean

Cited by 64 publications

References 70 publications

Late seed maturation improves the preservation of seedling emergence during storage in soybean

Late seed maturation improves the preservation of seedling emergence during storage in soybean

Physiological components of seed quality in runner‐type peanut during seed formation

First the seed: Genomic advances in seed science for improved crop productivity and food security

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