Seed Science Research最新文献_第3页

Contrasting seed moisture sorption behaviour between two species and the implication for seed longevity 两种种子吸湿行为的对比及其对种子寿命的影响

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-07-21 DOI: 10.1017/s0960258523000156

Shabnam Rezaei, J. Buitink, F. Hay

{"title":"Contrasting seed moisture sorption behaviour between two species and the implication for seed longevity","authors":"Shabnam Rezaei, J. Buitink, F. Hay","doi":"10.1017/s0960258523000156","DOIUrl":"https://doi.org/10.1017/s0960258523000156","url":null,"abstract":"\u0000 Understanding seed moisture desorption and adsorption isotherms is important for seed quality maintenance and better predicting seed storage lifespan. Freshly harvested oilseed rape and barley seeds were dried and then rehydrated twice. Seed equilibrium relative humidity (eRH) and moisture content (MC) were determined at different humidity levels so that two cycles of desorption and adsorption could be constructed. In addition, seeds were dried to 30% RH and then rehydrated to 50% RH for five cycles to determine whether they shift to the adsorption isotherm. Monolayer MC was determined using the Gugenheim-Anderson-de Boer model. Storage experiments were conducted for seeds equilibrated at 30, 40, 50, 60 and 70% RH for two cycles of desorption and adsorption at 45°C. Isotherm curves’ shapes were similar for oilseed rape and barley, although spanning a greater MC range in barley. The hysteresis effect was observed for oilseed rape and barley seeds when dried over silica gel at <10% RH. However, this effect was only observed for barley seeds when dried to 30% RH, but not for oilseed rape seeds. Longevity was greater for adsorbing seeds than desorbing seeds at a given eRH, however, there was no significant difference in σ (the standard deviation of the normal distribution of seed deaths over time)–MC log–log relationship. The relationship shifted for seeds on the second cycle. In conclusion, if seed lots are stored at a specific RH, reaching equilibrium by desorption or adsorption can strongly influence their longevity. Also, when seeds of different species are dried to low RH, they will respond differently to a subsequent increase in RH, which could profoundly affect their longevity.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43355868","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

Seed anatomy and dormancy class of 14 species from the Andean montane forests of Colombia 哥伦比亚安第斯山地森林14种种子解剖及休眠分类

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-06-27 DOI: 10.1017/s0960258523000144

J. M. Rojas-Villa, M. Quijano-Abril

{"title":"Seed anatomy and dormancy class of 14 species from the Andean montane forests of Colombia","authors":"J. M. Rojas-Villa, M. Quijano-Abril","doi":"10.1017/s0960258523000144","DOIUrl":"https://doi.org/10.1017/s0960258523000144","url":null,"abstract":"\u0000 Seed dormancy is a key trait used around the world to help understand the ecological dynamics of plant species, however, in some ecosystems such as the Andean forests of Colombia, the identification of dormancy class remains poorly known. To address this, we described the morphology, anatomy and dormancy class of the seeds and fruits of 14 species using microtome sections, light microscopy and scanning electron microscopy. Five native pioneer species showed Morphophysiological Dormancy, three Physical Dormancy + Physiological Dormancy and two Physical Dormancy, whereas two invasive species showed Physiological Dormancy. Only the species of the genus Cecropia had seeds with PY + PD that was promoted by the anatomical structure of the achenes. Of the analysed species, 85% showed dormancy and followed a pattern like other tropical montane ecosystems in the world. The anatomy of achenes and development of seed dormancy play important roles in the capacity of Cecropia species to contribute to the natural regeneration of Andean ecosystems. Additionally, seed dormancy may promote the high invasiveness of Thunbergia alata and Ulex europaeus in the Andean forests of the Central Cordillera of Colombia.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46972749","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

Seed dormancy diversity of the mangrove plant community in Sri Lanka to assist in direct seeding and seedling transplanting restoration 斯里兰卡红树林植物群落的种子休眠多样性有助于直播和幼苗移植恢复

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-06-06 DOI: 10.1017/s0960258523000120

Malaka M. Wijayasinghe, K. M. G. Gehan Jayasuriya, C. Gunatilleke, I. Gunatilleke, J. Walck

{"title":"Seed dormancy diversity of the mangrove plant community in Sri Lanka to assist in direct seeding and seedling transplanting restoration","authors":"Malaka M. Wijayasinghe, K. M. G. Gehan Jayasuriya, C. Gunatilleke, I. Gunatilleke, J. Walck","doi":"10.1017/s0960258523000120","DOIUrl":"https://doi.org/10.1017/s0960258523000120","url":null,"abstract":"\u0000 Mangroves are one of the most important ecosystems in the world being found in the tropical–subtropical belt. Despite their significance, they have been highly disturbed due to many anthropogenic and natural causes. A significant effort has been made to restore mangroves around the world. However, a lack of information on the seed biology of mangrove species has impeded restoration. Thus, this study aimed to produce a seed dormancy profile for selected plant species of mangroves in Sri Lanka. This profile would allow restoration ecologists to better understand what kinds of dormancy are present, how to alleviate dormancy and how to best stimulate germination to generate seedlings for nursery stock or out-planting. Mature fruits/seeds were collected from coastal zone mangroves in Sri Lanka. Germination and imbibition of non-scarified and manually scarified seeds and embryo:seed length (E:S) ratio of fresh and radicle-emerged seeds were evaluated to assess the class of dormancy. Of the 30 species, seeds from 12 (40%) were non-dormant and 18 (60%) were dormant. Three dormancy classes [physiological (PD), physical (PY) and morphophysiological (MPD)] and presence of epicotyl dormancy were identified. Among species producing dormant seeds, most of them showed PD (44%). PY, MPD and presence of epicotyl dormancy were represented by 28, 17 and 11% of the species, respectively. These findings aid practitioners to craft strategies to effectively break dormancy and germinate seeds for conservation and restoration activities of mangroves.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45317149","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

Seed dormancy break and germination by a rare relict of the Würmian glaciation in the Iberian Peninsula: Euonymus latifolius (Celastraceae) 伊比利亚半岛一种罕见的w<s:1> rmian冰期遗迹的种子休眠和萌发:卫矛(Celastraceae)

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-06-01 DOI: 10.1017/s0960258523000132

A. Santiago, J. M. Herranz, P. Ferrandis

{"title":"Seed dormancy break and germination by a rare relict of the Würmian glaciation in the Iberian Peninsula: Euonymus latifolius (Celastraceae)","authors":"A. Santiago, J. M. Herranz, P. Ferrandis","doi":"10.1017/s0960258523000132","DOIUrl":"https://doi.org/10.1017/s0960258523000132","url":null,"abstract":"\u0000 Southern European peninsulas have repeatedly played notable roles as refuges in the natural history of flora during periods of glaciation. Euonymus latifolius (Celastraceae) is a relict species from the last Würmian glaciation in the Iberian Peninsula. It still lives with isolated populations in favourable, cool mountainous microhabitats, being an extremely rare, critically endangered species. These Iberian populations are often high-priority targets for conservation due to their long-term persistence and unique evolutionary trajectory. Previously, it has not been feasible to promote significant programmes for reintroduction and/or population reinforcement of this singular plant species due to the great difficulties of conventional propagation. In this study, we analysed the effects of temperature, light and gibberellic acid (GA3) on the germination responses of E. latifolius to develop an effective protocol for seed germination as a main outcome. The results are coherent with the climatic temperature conditions recorded broadly in the Iberian Peninsula in the past and in the current refuge locations for the taxon. The germination responses of E. latifolius are compatible with those of seeds with intermediate physiological dormancy. In particular, the seeds required a 10-week warm period (20/7°C + 15/4°C) followed by 20 weeks of cold period (5 + 1.5°C) to break dormancy and achieve germination values over 90%. GA3 also promoted germination (80%). Therefore, we developed the first effective protocol for promoting E. latifolius seed germination and, thus, sexual propagation, to facilitate urgent ex situ actions in the current climate change context.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49197149","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

Palmitoylation mediates the proteolysis of seed storage proteins during the cooling process in hydrated lettuce seeds (Lactuca sativa) 棕榈酰化介导水合莴苣种子冷却过程中种子贮藏蛋白的蛋白质水解

3区生物学

Seed Science Research Pub Date : 2023-06-01 DOI: 10.1017/s096025852300017x

Ying Yu, Yingying Han, Yujiao Ding, Weijie Li, Ganesh K. Jaganathan, Baolin Liu

{"title":"Palmitoylation mediates the proteolysis of seed storage proteins during the cooling process in hydrated lettuce seeds (<i>Lactuca sativa</i>)","authors":"Ying Yu, Yingying Han, Yujiao Ding, Weijie Li, Ganesh K. Jaganathan, Baolin Liu","doi":"10.1017/s096025852300017x","DOIUrl":"https://doi.org/10.1017/s096025852300017x","url":null,"abstract":"Abstract Palmitoyl-protein thioesterase (PPT), involved in the fatty acid synthesis and the de-palmitoylation of protein, was induced under ecological cooling treatment in hydrated lettuce seeds. However, there was no significant difference in fatty acid levels between the control and the cooled samples. To further study the function of PPT, 2-bromopalmitic acid (2-Bp), an inhibitor of protein palmitoylation, was applied during the imbibition of hydrated lettuce seeds, which was followed by slow-cooling treatment (−3°C h −1 ). The application of 2-Bp (1 mM) significantly increased the survival rate of seeds from 6.70% (control imbibition) to 22.67% (2-Bp imbibition) after slow cooling to −20°C. Differential scanning calorimetry (DSC) analysis indicated that 2-Bp led to earlier onset of ice crystals in the endosperm than the control group. Two-dimensional electrophoresis (2D) confirmed that 2-Bp could promote the hydrolysis of seed globulins and the accumulation of globulin peptides with small molecular weights. High-efficiency hydrolysis of globulin induced by mercaptoethanol improved the freezing tolerance of hydrated lettuce seeds and led to the accumulation of small globulin peptides, which further proved the positive function of small globulin polypeptides in enhancing the freezing tolerance of hydrated lettuce seeds. DSC of small globulin peptides showed that the smaller the molecular weight, the earlier the appearance of ice crystals and the higher the enthalpy of heat release. For the smallest peptides, the 2-Bp-4 in 2-Bp group exhibited higher enthalpy in exothermic peak than the control group (c-4). In conclusion, the hydrolysis of seed globulins and accumulation of small-molecule globulin peptides could be the major reason for improving the freezing tolerance of hydrated seeds after de-palmitoylation treatment.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135143890","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

Transcriptome sequencing analysis revealing the potential mechanism of seed germination in Pulsatilla chinensis (Bunge) Regel 白头翁种子发芽潜在机制的转录组测序分析

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-05-11 DOI: 10.1017/s0960258523000089

Yan-hong Dong, Shouwen Zhang, Qian Qin, Yating Cai, Danyang Wu

{"title":"Transcriptome sequencing analysis revealing the potential mechanism of seed germination in Pulsatilla chinensis (Bunge) Regel","authors":"Yan-hong Dong, Shouwen Zhang, Qian Qin, Yating Cai, Danyang Wu","doi":"10.1017/s0960258523000089","DOIUrl":"https://doi.org/10.1017/s0960258523000089","url":null,"abstract":"\u0000 Pulsatilla chinensis (Bunge) Regel has been widely used in the pharmaceutical industry. With the deepening of clinical application, the research on its plant resources has attracted much attention. However, the underlying molecular mechanisms of distinct germination during Pulsatilla seed development are still mostly unknown. Therefore, in this study, four germination stages of P. chinensis seeds, with obvious differences in seed appearance traits, were used as materials. Transcriptome sequencing technology was used to analyse the molecular mechanisms of seed germination. A total of 27,601 differentially expressed genes (DEGs) (six different groups) were determined. KEGG enrichment analysis revealed that the up-regulated DEGs were enriched in phenylpropanoid biosynthesis, photosynthesis, photosynthesis–antenna proteins, plant hormone signal transduction, flavonoid biosynthesis and other pathways. A total of 87 DEGs was enriched in phytohormone signal transduction pathways, including auxin (25), abscisic acid (13), gibberellin (6), ethylene (9) and cytokinin (7). Furthermore, a protein–protein interaction network was constructed using these DEGs. Some DEGs were validated by qRT-PCR analysis. This comprehensive analysis provided basic information on the key genes of plant hormone signal transduction pathways involved in the seed germination process of P. chinensis (Bunge) Regel.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46880581","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

Seed dormancy in Asteraceae: a global vegetation zone and taxonomic/phylogenetic assessment 菊科植物的种子休眠:一个全球植被带和分类/系统发育评价

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-04-17 DOI: 10.1017/s0960258523000107

C. Baskin, J. Baskin

{"title":"Seed dormancy in Asteraceae: a global vegetation zone and taxonomic/phylogenetic assessment","authors":"C. Baskin, J. Baskin","doi":"10.1017/s0960258523000107","DOIUrl":"https://doi.org/10.1017/s0960258523000107","url":null,"abstract":"\u0000 The Asteraceae with up to 30,000 species occurs on all continents except Antarctica and in all major vegetation zones on earth. Our primary aim was to consider cypselae dormancy-break and germination of Asteraceae in relation to ecology, vegetation zones and evolution. Cypselae are desiccation-tolerant and in various tribes, genera, species and life forms of Asteraceae are either non-dormant (ND) or have non-deep physiological dormancy (PD) at maturity. All six types of non-deep PD are found among the Asteraceae, and dormancy is broken by cold or warm stratification or by afterripening. Soil cypselae banks may be formed but mostly are short-lived. Much within-species variation in dormancy-break and germination has been found. Using data compiled for 1192 species in 373 genera and 35 tribes of Asteraceae, we considered ND and PD in relation to life form, vegetation zone and tribe. Senecioneae and Astereae had the best representation across the vegetation zones on earth. In evergreen and semi-evergreen rainforests, more species have ND than PD, but in all other vegetation zones, except alpine/high-latitude tundra (where ND and PD are equal), more species have PD than ND. Tribes in the basal and central grades and those in the Heliantheae Alliance have both ND and PD. The high diversity and lability of non-deep PD may have enhanced the rate of species diversification by promoting the survival of new species and/or species in new habitats that became available following globally disruptive events since the origin of the Asteraceae in the Late Cretaceous.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42911015","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: 1

in Memoriam: J. Derek Bewley 1943–2023 纪念:J.德里克·比利1943-2023

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-04-05 DOI: 10.1017/s0960258523000119

引用次数: 0

Seed germination of Cistanche armena (Orobanchaceae), a rare endangered holoparasitic species endemic to Armenia 亚美尼亚一种珍稀濒危全寄生物种——肉苁蓉的种子萌发

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-03-23 DOI: 10.1017/s0960258523000090

Y. Krasylenko, Adelá Hýlová, Y. Sosnovsky, Markéta Ulbrichová, L. Spíchal, R. Piwowarczyk

{"title":"Seed germination of Cistanche armena (Orobanchaceae), a rare endangered holoparasitic species endemic to Armenia","authors":"Y. Krasylenko, Adelá Hýlová, Y. Sosnovsky, Markéta Ulbrichová, L. Spíchal, R. Piwowarczyk","doi":"10.1017/s0960258523000090","DOIUrl":"https://doi.org/10.1017/s0960258523000090","url":null,"abstract":"\u0000 The obligate root parasite Cistanche armena is a recently rediscovered, extremely rare endangered species endemic to Armenia, specifically parasitizing camelthorn (Alhagi maurorum, Fabaceae) and saltwort (Salsola dendroides, Chenopodiaceae). Its populations are reputedly declining due to habitat destruction and biotic impacts. Since the only known means of its reproduction is via the seeds, understanding the mechanisms of breaking C. armena seed dormancy and germination along with the related aspects of the species’ biology is highly important both from fundamental (functional ecology and evolution) and applied (conservation and management) perspectives. Here, we present the first in vitro seed germination protocol for C. armena involving fluridone, a systemic herbicide targeting the carotenoid biosynthetic pathway. In addition, the seed micromorphology of C. armena is described using both light microscopy and lignin autofluorescence visualized by confocal laser scanning microscopy. The actin cytoskeleton in radicle cells of germinated C. armena seedlings is described for the first time, being the proof of seed viability. Further elaboration and application of the proposed germination protocol with the cultivation of C. armena on susceptible hosts are altogether seen as a valuable tool for the conservation of this species.","PeriodicalId":21711,"journal":{"name":"Seed Science Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43921522","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

In Memoriam: Mike Black 1932–2023 纪念:迈克·布莱克1932-2023

IF 2.1 3区生物学

Seed Science Research Pub Date : 2023-03-03 DOI: 10.1017/s0960258523000077

P. Halmer, J. Derek Bewley

引用次数: 0