Seed Science Research最新文献_第3页

Seed permeability: an essential trait for classifying seed dormancy type 种子透气性：种子休眠类型分类的基本特征

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-05-09 DOI: 10.1017/s0960258524000059

Lindsay A. McCulloch, James W. Dalling, Paul-Camilo Zalamea

{"title":"Seed permeability: an essential trait for classifying seed dormancy type","authors":"Lindsay A. McCulloch, James W. Dalling, Paul-Camilo Zalamea","doi":"10.1017/s0960258524000059","DOIUrl":"https://doi.org/10.1017/s0960258524000059","url":null,"abstract":"Seed dormancy in plants can have a significant impact on their ecology. Recent work by Rojas-Villa and Quijano-Abril (2023) classified the seed dormancy class in 14 plant species from the Andean forests of Colombia by using germination trials and several microscopy techniques to describe seed anatomy and morphology. The authors conclude that Cecropia species have both physical and physiological dormancy (of which they call physiophysical dormancy) based on seed morphology and mean germination times of over 30 days. Here, we present seed permeability and germination data from neotropical pioneer tree species: Ochroma pyramidale, Cecropia longipes, and Cecropia insignis, as well as Cecropia peltata (present in Rojas-Villa and Quijano-Abril, 2023), to demonstrate that Cecropia species do not exhibit dormancy and also have high levels of seed permeability. We find that the mean germination time for all three Cecropia species in our study was less than 30 days. This suggests a need for reporting the conditions in which germination trials take place to allow for comparability among studies and using seed permeability tests to accurately identify the physical dormancy class of seeds. Further, we present data from the literature that suggests that dormancy is not a requirement for seed persistence in the seed bank.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"18 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140895492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proteomic characterization of the different stages of seed germination in Cupressus gigantea 千层塔种子萌发不同阶段的蛋白质组特征分析

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-05-03 DOI: 10.1017/s0960258524000126

Jianxin Li, Subin Zhang, Pei Lei, Tong-Ju Eh, Yu Zhang, Guangze Jin, Kun Dong, Qijiang Xu, Qiuxiang Luo, Fanjuan Meng

{"title":"Proteomic characterization of the different stages of seed germination in Cupressus gigantea","authors":"Jianxin Li, Subin Zhang, Pei Lei, Tong-Ju Eh, Yu Zhang, Guangze Jin, Kun Dong, Qijiang Xu, Qiuxiang Luo, Fanjuan Meng","doi":"10.1017/s0960258524000126","DOIUrl":"https://doi.org/10.1017/s0960258524000126","url":null,"abstract":"Seed germination is a pivotal period of plant growth and development. This process can be divided into four major stages, swelling absorption, seed coat dehiscence, radicle emergence and radicle elongation. Cupressus gigantea, a tree native to Tibet, China, is characterized by its resistance to stresses such as cold, and drought, and has a high economic and ecological value. Nevertheless, given its unique geographic location, its seeds are difficult to germinate. Therefore, it is crucial to explore the mechanisms involved in seed germination in this species to improve the germination efficiency of its seeds, thereby protecting this high-quality resource. Here, our findings indicate that seed germination was enhanced when exposed to a 6-h/8-h light/dark photoperiod, coupled with a temperature of 20°C. Furthermore, the application of exogenous GA3 (1 mg/ml, about 2.9 mM) stimulated the germination of C. gigantea seeds. Subsequently, proteomics was used to detect changes in protein expression during the four stages of seed germination. We identified 34 differentially expressed proteins (DEPs), including 13 at the radicle pre-emergence stage, and 17 at the radicle elongation stage. These DEPs were classified into eight functional groups, cytoskeletal proteins, energy metabolism, membrane transport, stress response, molecular chaperones, amino acid metabolism, antioxidant system and ABA signalling pathway. Most of them were found to be closely associated with amino acid metabolism. Combined, these findings indicate that, along with temperature and light, exogenous GA3 can increase the germination efficiency of C. gigantea seeds. Our study also offers insights into the changes in protein expression patterns in C. gigantea seeds during germination.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"2 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140821294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genome-wide association study on seed dormancy in barley 大麦种子休眠的全基因组关联研究

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-30 DOI: 10.1017/s0960258524000114

Gaofeng Zhou, Lee-Anne McFawn, Xiao-qi Zhang, Tefera Tolera Angessa, Sharon Westcott, Chengdao Li

引用次数: 0

Differences in germination traits of time-separated seed collections of dry forest species from Central Zambia and the potential role of climate 赞比亚中部干旱森林物种分时种子采集的萌芽特性差异及气候的潜在作用

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-24 DOI: 10.1017/s0960258524000102

Emmanuel N. Chidumayo

{"title":"Differences in germination traits of time-separated seed collections of dry forest species from Central Zambia and the potential role of climate","authors":"Emmanuel N. Chidumayo","doi":"10.1017/s0960258524000102","DOIUrl":"https://doi.org/10.1017/s0960258524000102","url":null,"abstract":"Time-separated seed collections with a separation period of 12–18 years were used to study recent changes in germination traits and the role of climate factors in seven tropical dry forest (TDF) woody species in Zambia, southern Africa. In all the species, peak and final germination were lower in recent (2016–2021) seed collections than in historic (1998–2005) seed collections during the first germination season. However, in species with seed dormancy, both peak and final germination after one year burial were higher in recent seed collections than in historic seed collections. Three monthly climate factors had significant effects on final germination in the different species and the timing of most of these factors was during seed development and ripening that suggest that these factors operated through mother plants. In species with seed dormancy, post-first-year germination of buried seeds responded to climate factors in the regeneration niche. Climate factors that significantly affected germination included those that changed over the separation period between historic and recent seed collections. This indicates that short-time climatic changes may have the potential to impact germination in TDF woody species of southern Africa. The germination responses to climate factors were both positive and negative and it is not clear whether these are adaptations or not. Further research is required to assess the adaptive significance of these changes in germination traits in TDF species of southern Africa.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"21 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140640115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can alpine species take the heat? Impacts of increased temperatures on early life stages 高山物种能否承受高温？温度升高对早期生命阶段的影响

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-22 DOI: 10.1017/s0960258524000096

Alexandra E. Seglias, Michelle DePrenger-Levin

{"title":"Can alpine species take the heat? Impacts of increased temperatures on early life stages","authors":"Alexandra E. Seglias, Michelle DePrenger-Levin","doi":"10.1017/s0960258524000096","DOIUrl":"https://doi.org/10.1017/s0960258524000096","url":null,"abstract":"Alpine plant species are particularly vulnerable to climate change. Temperature fluctuations are projected to be most severe at high elevations. Even small shifts in temperature have major consequences on phenology, reproduction, and community composition. Early life stages are arguably the most important processes in the fitness of an individual plant and the dynamics and persistence of plant populations. These initial developmental stages are expected to be more vulnerable to changes in climate than adult life stages. To understand how early life stages of alpine plant species will respond to warming temperatures, seeds and seedlings of two species were exposed to three different temperature regimes. Temperatures were based on current and projected conditions under low and high emission scenarios. Two rare alpine species performed better under warmer temperatures at both the germination and seedling stages. The results show that early life stages of alpine plants may not be at high risk from warming temperatures; however, there are many other shifting climatic factors to consider, resulting from climate change beyond temperature alone.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"114 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140632133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Redox imbalance accompanies loss of viability in seeds of two cacti species buried in situ 氧化还原失衡导致两种仙人掌物种的种子失去活力

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-15 DOI: 10.1017/s0960258524000011

David A. Guzmán-Hernández, Claudia Barbosa-Martínez, Juan M. Villa-Hernández, Laura J. Pérez-Flores

{"title":"Redox imbalance accompanies loss of viability in seeds of two cacti species buried in situ","authors":"David A. Guzmán-Hernández, Claudia Barbosa-Martínez, Juan M. Villa-Hernández, Laura J. Pérez-Flores","doi":"10.1017/s0960258524000011","DOIUrl":"https://doi.org/10.1017/s0960258524000011","url":null,"abstract":"This work provides insights into the deterioration of cacti seeds of Escontria chiotilla (F.A.C. Weber ex K. Schum) and Stenocereus pruinosus (Otto ex Pfeiff.) Buxbaum stored ex situ at 25 °C, under dry and dark conditions or buried in situ conditions in a xerophytic shrubland. Viability, germination speed, electrolyte leakage and indicators of the redox balance including glutathione content, glutathione half-cell reduction potential (EGSSG/2GSH) and malondialdehyde (MDA), oxidized protein content, together with water-soluble antioxidant enzyme activity were assessed. Over a period of two years of storage, viability was maintained when seeds were stored ex situ at 7–9% water content compared to seeds buried in the soil. A second burial experiment showed that seeds of E. chiotilla maintained viability during a year of storage that included a rainy season followed by a dry season. Thereafter, they died rapidly during the second rainy season. In contrast, those of S. pruinosus started to lose viability after 6 months of burial at the end of the rainy season and were mostly dead at the end of the dry season. This difference in persistence between species was related to a difference in the glutathione content and antioxidant enzyme activities. In both storage experiments, the loss of viability of both species was associated to a EGSSG/2GSH shift to a more oxidative state during burial. Yet, contents in MDA and oxidized soluble proteins were not related to redox imbalance and loss of viability, indicating that these compounds are not good markers of oxidative stress in cacti seeds during storage.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"24 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140553481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phylogenetic trends in TZ staining analysis of six deep dormancy seeds 六种深休眠种子 TZ 染色分析的系统发育趋势

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-15 DOI: 10.1017/s0960258524000060

Chen Yin Peng, Yu Wu, Wen Hui Huang, Zhi Yun Deng, Xiao Rui Sun, Ming Zhu Wang, Hugh W. Pritchard, Yong Bao Shen, Jin Ya Xu, Xiang Yu Yu, Cong Cong Guo

{"title":"Phylogenetic trends in TZ staining analysis of six deep dormancy seeds","authors":"Chen Yin Peng, Yu Wu, Wen Hui Huang, Zhi Yun Deng, Xiao Rui Sun, Ming Zhu Wang, Hugh W. Pritchard, Yong Bao Shen, Jin Ya Xu, Xiang Yu Yu, Cong Cong Guo","doi":"10.1017/s0960258524000060","DOIUrl":"https://doi.org/10.1017/s0960258524000060","url":null,"abstract":"The assessment of seed quality and physiological potential is essential in seed production and crop breeding. In the process of rapid detection of seed viability using tetrazolium (TZ) staining, it is necessary to spend a lot of labour and material resources to explore the pretreatment and staining methods of hard and solid seeds with physical barriers. This study explores the TZ staining methods of six hard seeds (Tilia miqueliana, Tilia henryana, Sassafras tzumu, Prunus subhirtella, Prunus sibirica, and Juglans mandshurica) and summarizes the TZ staining conditions required for hard seeds by combining the difference in fat content between seeds and the kinship between species, thus providing a rapid viability test method for the protection of germplasm resources of endangered plants and the optimization of seed bank construction. The TZ staining of six species of hard seeds requires a staining temperature above 35 °C and a TZ solution concentration higher than 1%. Endospermic seeds require shorter staining times than exalbuminous seeds. The higher the fat content of the seeds, the lower the required incubation temperature and TZ concentration for staining, and the longer the staining time. And the closer the relationship between the two species, the more similar their staining conditions become. The TZ staining method of similar species can be predicted according to the genetic distance between the phylogenetic trees, and the viability of new species can be detected quickly.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"37 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140553647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Likelihood ratio test for the analysis of germination percentages 发芽率分析的似然比检验

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-04-02 DOI: 10.1017/s0960258524000023

Yongha Rhie, Soyeon Lee, Hohsuk Noh

引用次数: 0

Interactions between seed functional traits and environmental factors and their influence on germination performance of Australian native species 种子功能特性与环境因素之间的相互作用及其对澳大利亚本土物种萌芽性能的影响

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-03-25 DOI: 10.1017/s0960258523000235

Fernanda C. Beveridge, Alwyn Williams, Robyn Cave, Sundaravelpandian Kalaipandian, Buddhi Dayananda, Steve W. Adkins

{"title":"Interactions between seed functional traits and environmental factors and their influence on germination performance of Australian native species","authors":"Fernanda C. Beveridge, Alwyn Williams, Robyn Cave, Sundaravelpandian Kalaipandian, Buddhi Dayananda, Steve W. Adkins","doi":"10.1017/s0960258523000235","DOIUrl":"https://doi.org/10.1017/s0960258523000235","url":null,"abstract":"Climate variability is expected to increase due to climate change, with projected increases in temperature and erratic rainfall patterns. These changes will alter the environmental cues sensed by seeds, and therefore will impact plant recruitment. This study investigated the effects of seed functional traits (germinability, germination time, synchrony and seed mass) on germination responses of several sub-tropical native Australian plant species under different environmental factors (water stress, salinity and pH). The effect of a hot water pre-treatment was also tested on Fabaceae seeds with known physical dormancy. Seed traits, environmental factors and seed pre-treatments had significant effects on final germination percentage and germination time. Seed mass and time to 50% germination (t50) were also positively correlated. In contrast, pH did not affect germination and there was no interaction between pH and any of the measured seed functional traits. Some species showed a high thermal tolerance to germination and germination was indifferent to light conditions for all species. Results showed that certain seed functional traits interact with environmental factors to influence germination percentage and time. These findings highlight the importance of considering seed functional traits when determining a species germination response under a changing climate. In addition, the findings provide important knowledge to better guide seed-based land restoration programmes.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"41 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140209683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The re-establishment of desiccation tolerance in germinated tomato (Solanum lycopersicum) seeds 重新建立发芽番茄（Solanum lycopersicum）种子的干燥耐受性

IF 2.1 3区生物学

Seed Science Research Pub Date : 2024-03-01 DOI: 10.1017/s0960258524000047

Naoto Sano, Jerome Verdier

{"title":"The re-establishment of desiccation tolerance in germinated tomato (Solanum lycopersicum) seeds","authors":"Naoto Sano, Jerome Verdier","doi":"10.1017/s0960258524000047","DOIUrl":"https://doi.org/10.1017/s0960258524000047","url":null,"abstract":"Desiccation tolerance (DT) of seeds, one of the plant's environmental adaptation mechanisms, allows them to survive as seeds in a quiescent state under extremely water-deficient conditions during the plant's life cycle, followed by seed germination and seedling establishment under favourable water conditions. The seed-DT is lost after radicle emergence; however, there is a developmental period called the ‘DT window’ during which the germinating seeds can re-induce DT following a cue from their ambient low water potential (i.e. mild osmotic stress). The DT re-inducibility within the DT window has been used as a model biosystem for understanding molecular mechanisms that activate/supress DT in a number of plant species. However, the characteristics of the DT window for species particularly important to the agroindustry are still largely fragmented. Here, physiological analyses were performed, aiming to elucidate the properties of the DT window in tomato, a model species for Solanaceae, holding a key strategic position for the seed industry and commercial use around the world. We revealed that (i) the DT window of tomato seeds is closed when the developing radicle reaches about 4 mm after germination, (ii) the most effective ambient water potential to re-induce DT into seeds is about −1.5 MPa and (iii) there is organ specificity of DT re-induction with hypocotyls, showing a longer DT window than cotyledons and roots in post-germination seeds.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":"18 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140000869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0