Pub Date : 2022-05-03DOI: 10.1080/00173134.2022.2050804
Yixiao Wu, Jianguo Li
Abstract Triprojectacites Mtchedlishvili, 1961 emend. Stanley 1970 is an important pollen group of the Northern Hemisphere palynofloras during the Late Cretaceous. It is featured by three, or occasionally four or five, projections at the equatorial zone of the body with colpate apertures and endexinous thickenings. This pollen group is very useful in the stratigraphic division and correlation for its high diversity, short stratigraphic interval, and rapid evolution. However, the diversity and complex morphology make the pollen difficult to describe and classify, which brought discrepancies in the understanding and application of genus and species. In the present article, we make a re-evaluation of the previously proposed genera by using an improved, clearly defined morphological terminology based on standardised measurements. Finally, eight genera are screened out to set a new classification system from the 39 genera that have been proposed in relation with Triprojectacites. A diagnostic key is compiled for the convenience of differentiating them.
{"title":"Genus classification of Triprojectacites Mtchedlishvili, 1961 emend. Stanley 1970","authors":"Yixiao Wu, Jianguo Li","doi":"10.1080/00173134.2022.2050804","DOIUrl":"https://doi.org/10.1080/00173134.2022.2050804","url":null,"abstract":"Abstract Triprojectacites Mtchedlishvili, 1961 emend. Stanley 1970 is an important pollen group of the Northern Hemisphere palynofloras during the Late Cretaceous. It is featured by three, or occasionally four or five, projections at the equatorial zone of the body with colpate apertures and endexinous thickenings. This pollen group is very useful in the stratigraphic division and correlation for its high diversity, short stratigraphic interval, and rapid evolution. However, the diversity and complex morphology make the pollen difficult to describe and classify, which brought discrepancies in the understanding and application of genus and species. In the present article, we make a re-evaluation of the previously proposed genera by using an improved, clearly defined morphological terminology based on standardised measurements. Finally, eight genera are screened out to set a new classification system from the 39 genera that have been proposed in relation with Triprojectacites. A diagnostic key is compiled for the convenience of differentiating them.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"161 - 181"},"PeriodicalIF":0.9,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47714229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-29DOI: 10.1080/00173134.2022.2049862
Gulsah Yil, S. Karlidağ, A. Akyol, A. Koseman, A. Uyumlu, M. Yilmaztekin, S. Erdoğan, I. Şeker
Abstract Three treatments (Glucose, Sucrose, Bee Feed Syrup) were used to examine the influence of supplementary feeding on the pollen spectrum of the royal jelly produced by Apis mellifera L. colonies. Apis mellifera colonies were located in the Battalgazi and Dogansehir districts of Malatya province in Turkey. In total 255 royal jelly samples were investigated and the analysis recorded over 30 taxa. In both sites the control group heavily utilised Quercus, Verbascum, Astragalus, and Lamiaceae. The feeding treatments saw Quercus, Verbascum, and Astragalus still being used but in different proportions. The utilisation of Lamiaceae was much reduced and Echium became an important component in colonies that had supplementary feeding.
{"title":"A comparative melissopalynological study of royal jelly from Turkey","authors":"Gulsah Yil, S. Karlidağ, A. Akyol, A. Koseman, A. Uyumlu, M. Yilmaztekin, S. Erdoğan, I. Şeker","doi":"10.1080/00173134.2022.2049862","DOIUrl":"https://doi.org/10.1080/00173134.2022.2049862","url":null,"abstract":"Abstract Three treatments (Glucose, Sucrose, Bee Feed Syrup) were used to examine the influence of supplementary feeding on the pollen spectrum of the royal jelly produced by Apis mellifera L. colonies. Apis mellifera colonies were located in the Battalgazi and Dogansehir districts of Malatya province in Turkey. In total 255 royal jelly samples were investigated and the analysis recorded over 30 taxa. In both sites the control group heavily utilised Quercus, Verbascum, Astragalus, and Lamiaceae. The feeding treatments saw Quercus, Verbascum, and Astragalus still being used but in different proportions. The utilisation of Lamiaceae was much reduced and Echium became an important component in colonies that had supplementary feeding.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"296 - 306"},"PeriodicalIF":0.9,"publicationDate":"2022-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43119458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-12DOI: 10.1080/00173134.2022.2047775
P. Sutthinon, Sriwipha Thonsaeng, C. Suwanphakdee, K. Rungwattana, Chatchalerm Ketwetsuriya, U. Meesawat
Abstract Garcinia dulcis (Roxb.) Kurz is a medicinal plant having potential as a source of medicinal ingredients, yet details of its reproductive biology, especially palynological features, remain largely unresearched. Therefore, a detailed description of pollen development and morphology, and pollenkitt production of G. dulcis, based on both light and electron microscopic analysis, was undertaken. The results showed that G. dulcis underwent sequential anther and pollen development with a high production of pollenkitt. Pollenkitt secreted from tapetum degradation was released early into the locular cavity (at the microspore tetrad stage). The occurrences of intinous protrusion (protruding oncus) at pollen aperture and the precocious pollenkitt production were suggested as adaptive features of G. dulcis to assist its biotic pollination, according to its smooth pollen surface. The results obtained provide new insights into the significant palynological traits that would provide baseline data for further research on G. dulcis.
{"title":"Pollen development, pollenkitt production and the occurrence of protruding oncus in Garcinia dulcis (Roxb.) Kurz (Clusiaceae)","authors":"P. Sutthinon, Sriwipha Thonsaeng, C. Suwanphakdee, K. Rungwattana, Chatchalerm Ketwetsuriya, U. Meesawat","doi":"10.1080/00173134.2022.2047775","DOIUrl":"https://doi.org/10.1080/00173134.2022.2047775","url":null,"abstract":"Abstract Garcinia dulcis (Roxb.) Kurz is a medicinal plant having potential as a source of medicinal ingredients, yet details of its reproductive biology, especially palynological features, remain largely unresearched. Therefore, a detailed description of pollen development and morphology, and pollenkitt production of G. dulcis, based on both light and electron microscopic analysis, was undertaken. The results showed that G. dulcis underwent sequential anther and pollen development with a high production of pollenkitt. Pollenkitt secreted from tapetum degradation was released early into the locular cavity (at the microspore tetrad stage). The occurrences of intinous protrusion (protruding oncus) at pollen aperture and the precocious pollenkitt production were suggested as adaptive features of G. dulcis to assist its biotic pollination, according to its smooth pollen surface. The results obtained provide new insights into the significant palynological traits that would provide baseline data for further research on G. dulcis.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"214 - 224"},"PeriodicalIF":0.9,"publicationDate":"2022-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45145446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-25DOI: 10.1080/00173134.2022.2037018
Adriele Santos Vieira, Zaline Dos Santos Lopes, Juliana Brito Santos, L. A. Nunes, A. M. Waldschmidt
Abstract The stingless bee Melipona quadrifasciata anthidioides is a major pollinator of the Brazilian semi-arid region (Caatinga), it is widely used in meliponiculture due to the economic value of the honey. The goals of this study were to identify the floral resources exploited by these bees in a human-modified area from Caatinga in Bahia, and to provide a pollen calendar that might be helpful to beekeepers. Pollen loads were collected monthly from each colony over a 7-month period. Twenty pollen morphotypes were identified with high frequencies of pollen types belonging to Myrtaceae, Fabaceae-Caesalpinioideae and Solanaceae. The dominant pollens were represented by Mimosa 1 and Mimosa arenosa (Fabaceae-Caesalpinioideae). The accessory types were Mimosa tenuiflora, and Psidium guajava (Myrtaceae), while Solanum 1 and Solanum 2 represented major isolated pollen types. Some morphotypes, such as those from Mimosa are common in anthropized areas, thus playing a major role in the survival of bee colonies from areas where floral resources are limited. The present result revealed that Melipona quadrifasciata anthidioides interacts with several plant species, thus highlighting the importance of conserving the regional flora. Moreover, the pollen calendar obtained is particularly useful to the management of this stingless bee in meliponary since it provides information about the plants that can be used as pollen source throughout the year. This information is also helpful for both the conservation of regional biodiversity and beekeeping in local agriculture.
{"title":"Pollen spectrum collected by Melipona quadrifasciata anthidioides Lepeletier, 1863 (Apidae: Meliponini) in an anthropized region of Caatinga","authors":"Adriele Santos Vieira, Zaline Dos Santos Lopes, Juliana Brito Santos, L. A. Nunes, A. M. Waldschmidt","doi":"10.1080/00173134.2022.2037018","DOIUrl":"https://doi.org/10.1080/00173134.2022.2037018","url":null,"abstract":"Abstract The stingless bee Melipona quadrifasciata anthidioides is a major pollinator of the Brazilian semi-arid region (Caatinga), it is widely used in meliponiculture due to the economic value of the honey. The goals of this study were to identify the floral resources exploited by these bees in a human-modified area from Caatinga in Bahia, and to provide a pollen calendar that might be helpful to beekeepers. Pollen loads were collected monthly from each colony over a 7-month period. Twenty pollen morphotypes were identified with high frequencies of pollen types belonging to Myrtaceae, Fabaceae-Caesalpinioideae and Solanaceae. The dominant pollens were represented by Mimosa 1 and Mimosa arenosa (Fabaceae-Caesalpinioideae). The accessory types were Mimosa tenuiflora, and Psidium guajava (Myrtaceae), while Solanum 1 and Solanum 2 represented major isolated pollen types. Some morphotypes, such as those from Mimosa are common in anthropized areas, thus playing a major role in the survival of bee colonies from areas where floral resources are limited. The present result revealed that Melipona quadrifasciata anthidioides interacts with several plant species, thus highlighting the importance of conserving the regional flora. Moreover, the pollen calendar obtained is particularly useful to the management of this stingless bee in meliponary since it provides information about the plants that can be used as pollen source throughout the year. This information is also helpful for both the conservation of regional biodiversity and beekeeping in local agriculture.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"225 - 234"},"PeriodicalIF":0.9,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45035322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-01DOI: 10.1080/00173134.2021.1993329
Vibhasa Shukla, K. S. Rao, Deepika Tripathi
Abstract Comparative pollen diversity of honey collected from northern and southern regions of Prayagraj district of Uttar Pradesh India during different honey flow periods were investigated in the present study. A total of 67 pollen types belonging to 32 plant families were recovered from 24 honey samples collected from different sampling points from the northern and the southern regions of Prayagraj district. While Brassica campestris, Dalbergia sissoo, Eucalyptus sp., Helianthus annuus, Peltophorum pterocarpum and Sesamum indicum were recorded as predominant pollen types in unifloral honey samples collected from the northern region; Ageratum conyzoides and Parthenium hysterophorus were recorded in honey samples from the southern region. Based on the findings of the present study we found identified pollen types belong to the native species as well as cultivated species (agricultural crops and trees) of Prayagraj district. This information may help the beekeeper to conserve plant resources for honey production. The pollen type diversity per honey sample from the southern region of Prayagraj district was richer as compared to the northern region. Shannon–Weaver Diversity Index and Pielou’s Evenness Index for pollen in the honey samples ranged from 1.41 to 2.56 and 0.62 to 0.88, respectively, indicating high plant heterogeneity foraged by the honeybees.
{"title":"Pollen diversity of honey from northern and southern Prayagraj district Uttar Pradesh, India","authors":"Vibhasa Shukla, K. S. Rao, Deepika Tripathi","doi":"10.1080/00173134.2021.1993329","DOIUrl":"https://doi.org/10.1080/00173134.2021.1993329","url":null,"abstract":"Abstract Comparative pollen diversity of honey collected from northern and southern regions of Prayagraj district of Uttar Pradesh India during different honey flow periods were investigated in the present study. A total of 67 pollen types belonging to 32 plant families were recovered from 24 honey samples collected from different sampling points from the northern and the southern regions of Prayagraj district. While Brassica campestris, Dalbergia sissoo, Eucalyptus sp., Helianthus annuus, Peltophorum pterocarpum and Sesamum indicum were recorded as predominant pollen types in unifloral honey samples collected from the northern region; Ageratum conyzoides and Parthenium hysterophorus were recorded in honey samples from the southern region. Based on the findings of the present study we found identified pollen types belong to the native species as well as cultivated species (agricultural crops and trees) of Prayagraj district. This information may help the beekeeper to conserve plant resources for honey production. The pollen type diversity per honey sample from the southern region of Prayagraj district was richer as compared to the northern region. Shannon–Weaver Diversity Index and Pielou’s Evenness Index for pollen in the honey samples ranged from 1.41 to 2.56 and 0.62 to 0.88, respectively, indicating high plant heterogeneity foraged by the honeybees.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"148 - 160"},"PeriodicalIF":0.9,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46180022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-24DOI: 10.1080/00173134.2021.1995782
Z. Ramezani, Hamideh Mousavi, Marjan Zamani, F. Ghaderi, R. Tahmasebi, A. Movahed, Amir Goreh, Saeed Keshmiri, A. Darabi, S. Farrokhi
Abstract Aeroallergens are known as the major cause of allergic respiratory diseases. The present study aimed to investigate the skin prick test (SPT) reactivity to the pollen of Conocarpus erectus trees and to find the association between the indoor and outdoor aeroallergens in the patients. In the present case series multicentre study, 104 patients with respiratory allergies such as allergic rhinitis and asthma who were referred to the Bushehr University allergy clinic participated. The SPT was applied by using the extract of Conocarpus erectus pollen and the other allergens to determine the patients’ reactivity. The frequency of positive sensitivity to Conocarpus erectus pollen was 61 (58.6%) and it was 62.5%, 55.7%, and 53.8% for the tree pollen allergens Citrus X Sinensis, Morus rubra, and Phoenix dactylifera, respectively. In addition, the maximum frequency of sensitivity to other aeroallergens was with house dust mite (HDM) (78.8%), Salsola kali; 71.2%), and cockroach (71.2%). The maximum frequency of reactivity to food allergens was with egg yolk (37.6%), shrimp (37%), and beef (34.6%). This study concludes that the frequency of sensitivity to Conocarpus erectus pollen was high and similar to the pollen allergens of other trees that are widely cultivated in southern Iran. Green spaces are the key element of urban management, and the interaction between citizens and the environment, as well as promoting human health are very effective. Therefore, the lack of planning in urban populations in the choice of ornamental species can be a triggering factor, especially in patients with respiratory allergies.
摘要空气过敏原是引起过敏性呼吸道疾病的主要原因。本研究旨在调查直立木花粉的皮肤点刺试验（SPT）反应性，并找出患者室内外空气过敏原之间的关系。在本病例系列多中心研究中，104名被转诊到布什尔大学过敏诊所的呼吸道过敏患者（如过敏性鼻炎和哮喘）参与了研究。SPT通过使用直立锥虫花粉提取物和其他过敏原来测定患者的反应性。对直立木花粉的阳性敏感率为61（58.6%），对树花粉过敏原Citrus X Sinensis、Morus rubra和Phoenix dactylifera的阳性敏感度分别为62.5%、55.7%和53.8%。此外，对其他空气过敏原的敏感性最高的是屋尘螨（HDM）（78.8%）、猪毛菜（Salsola kali）；71.2%）和蟑螂（71.2%）。对食物过敏原的反应频率最高的是蛋黄（37.6%）、虾（37%）和牛肉（34.6%）。本研究得出结论，对直立锥虫花粉的敏感性频率较高，与伊朗南部广泛种植的其他树木的花粉过敏原相似。绿地是城市管理的关键要素，市民与环境的互动以及促进人类健康都是非常有效的。因此，城市人群在选择观赏物种方面缺乏规划可能是一个触发因素，尤其是在呼吸道过敏患者中。
{"title":"Reactivity to Conocarpus tree pollen in patients with respiratory allergic diseases in the south-western part of Iran","authors":"Z. Ramezani, Hamideh Mousavi, Marjan Zamani, F. Ghaderi, R. Tahmasebi, A. Movahed, Amir Goreh, Saeed Keshmiri, A. Darabi, S. Farrokhi","doi":"10.1080/00173134.2021.1995782","DOIUrl":"https://doi.org/10.1080/00173134.2021.1995782","url":null,"abstract":"Abstract Aeroallergens are known as the major cause of allergic respiratory diseases. The present study aimed to investigate the skin prick test (SPT) reactivity to the pollen of Conocarpus erectus trees and to find the association between the indoor and outdoor aeroallergens in the patients. In the present case series multicentre study, 104 patients with respiratory allergies such as allergic rhinitis and asthma who were referred to the Bushehr University allergy clinic participated. The SPT was applied by using the extract of Conocarpus erectus pollen and the other allergens to determine the patients’ reactivity. The frequency of positive sensitivity to Conocarpus erectus pollen was 61 (58.6%) and it was 62.5%, 55.7%, and 53.8% for the tree pollen allergens Citrus X Sinensis, Morus rubra, and Phoenix dactylifera, respectively. In addition, the maximum frequency of sensitivity to other aeroallergens was with house dust mite (HDM) (78.8%), Salsola kali; 71.2%), and cockroach (71.2%). The maximum frequency of reactivity to food allergens was with egg yolk (37.6%), shrimp (37%), and beef (34.6%). This study concludes that the frequency of sensitivity to Conocarpus erectus pollen was high and similar to the pollen allergens of other trees that are widely cultivated in southern Iran. Green spaces are the key element of urban management, and the interaction between citizens and the environment, as well as promoting human health are very effective. Therefore, the lack of planning in urban populations in the choice of ornamental species can be a triggering factor, especially in patients with respiratory allergies.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"140 - 147"},"PeriodicalIF":0.9,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49617782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-06DOI: 10.1080/00173134.2021.1976823
Adriana Mercedes Camejo Aviles, M. Ledru, F. Ricardi-Branco, Paula A. Rodríguez-Zorro, R. J. Francischetti Garcia, Jerlin Fernandez Perdomo
Abstract A total of 115 palynomorphs recovered from samples collected in the Colônia basin were described. The morphological descriptions were accompanied by illustrations and ecological information. The palynomorphs date back to the penultimate glacial with ages ranging from 135 to 180 ka. The palynomorphs were grouped according to their presence in three forest types represented in the Colônia basin, namely hillside forest, peat forest and swamp forest. The 115 identified taxa represent a total 58 families; one represents the algae, and 57 Embryophyta (ten pteridophytes, two gymnosperms and 45 angiosperms); 52% of the palynomorphs were observed in the three local forest types. 32.4% were observed in other types of vegetation distributed within a radius of 5 to 15 km from the basin. These palynomorphs represent mature forest, secondary forest, cloud forest, grassland, and disturbed environment whereas 15.6% of the palynomorphs were no longer observed in the region of Colônia. The species represented by these palynomorphs most likely disappeared from the region of Colônia during interglacial climate warming. In addition, our study provides reference material for future pollen studies in Colônia since some vulnerable species were identified.
{"title":"Characterization of a glacial neotropical rainforest from pollen and spore assemblages (Colônia, São Paulo, Brazil)","authors":"Adriana Mercedes Camejo Aviles, M. Ledru, F. Ricardi-Branco, Paula A. Rodríguez-Zorro, R. J. Francischetti Garcia, Jerlin Fernandez Perdomo","doi":"10.1080/00173134.2021.1976823","DOIUrl":"https://doi.org/10.1080/00173134.2021.1976823","url":null,"abstract":"Abstract A total of 115 palynomorphs recovered from samples collected in the Colônia basin were described. The morphological descriptions were accompanied by illustrations and ecological information. The palynomorphs date back to the penultimate glacial with ages ranging from 135 to 180 ka. The palynomorphs were grouped according to their presence in three forest types represented in the Colônia basin, namely hillside forest, peat forest and swamp forest. The 115 identified taxa represent a total 58 families; one represents the algae, and 57 Embryophyta (ten pteridophytes, two gymnosperms and 45 angiosperms); 52% of the palynomorphs were observed in the three local forest types. 32.4% were observed in other types of vegetation distributed within a radius of 5 to 15 km from the basin. These palynomorphs represent mature forest, secondary forest, cloud forest, grassland, and disturbed environment whereas 15.6% of the palynomorphs were no longer observed in the region of Colônia. The species represented by these palynomorphs most likely disappeared from the region of Colônia during interglacial climate warming. In addition, our study provides reference material for future pollen studies in Colônia since some vulnerable species were identified.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"81 - 123"},"PeriodicalIF":0.9,"publicationDate":"2022-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47009193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1080/00173134.2021.1984574
Higor Antonio-Domingues, A. P. Perez, M. Rossi, A. Martinelli, C. D. da Luz
Abstract Pollen morphology, ultrasculpture and ultrastructure were investigated for Poiretia in search of morphological characters of taxonomic importance using light microscopy as well as scanning and transmission electron microscopy. Additionally, principal components analysis was done to elucidate patterns of variation among the species. Pollen grains are small to medium size, isopolar, prolate spheroidal to prolate, 3-zonocolporate, colporus with operculum, membrane and margo are ornamented. Five pollen types are recognised and described based on mesocolpium exine ultrasculpture. Exine consists of a compact tectum, eutectate, tectate perforate to semitectate, the infratectum is collumelar and granular, foot layer discontinuous to absent in aperture region and endexine is continuous. A comprehensive description of the operculum, membrane ornamentations and the ultrastructure of exine were given for all species in the genus, nine of which were not previously analysed palynologically. Systematic implications of the palynological variations found in the literature and through light, scanning and transmission electron microscopical analyses were discussed. This article describes the importance of the characterisation of Poiretia pollen grains, which contributes to the systematics of the Adesmia informal clade. The class of endoaperture, ultrasculpture of mesocolpium and apocolpium, and ultrastructure of tectum, foot layer, and endexine support the eurypalynous status of Poiretia and are useful to recognise some species that have problematic delimitation (P. latifolia, P. coriifolia, P. unifoliolata, P. mattogrossensis, P. elegans, P. marginata) as well as groups of species.
摘要利用光镜、扫描电镜和透射电镜等观察方法，研究了茯苓属植物的花粉形态、超微形貌和超微结构，寻找具有分类学意义的形态学特征。此外，还进行了主成分分析，以阐明物种间的变异模式。花粉粒小到中等大小，等极性，长形球形到长形，3带合生，两性具被盖，被膜和胚乳有装饰。根据中果皮的超微结构，识别和描述了五种花粉类型。外壁由致密的顶盖组成，共结晶，顶盖穿孔至半结晶，下顶盖柱状和粒状，孔区足部不连续至无，背缘连续。对该属所有种的被盖、膜纹饰和外壁的超微结构进行了全面的描述，其中9种以前没有进行过孢粉学分析。讨论了文献中发现的孢粉变异的系统意义，并通过光、扫描和透射电镜分析进行了讨论。本文描述了花粉粒特征的重要性，这有助于花粉粒的系统分类。内孔的分类、中孔和顶孔的超微结构以及顶盖、足层和下端的超微结构支持了Poiretia的泛化地位，并有助于识别一些划界有问题的物种(P. latifolia, P. coriifolia, P. unifoliolata, P. mattogrosensis, P. elegans, P. marginata)以及物种群。
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Pub Date : 2021-12-20DOI: 10.1080/00173134.2021.1990398
Ine De Man, Ana Rita Giraldes Simões
Abstract Xenostegia D.F.Austin et Staples is a small genus in the family Convolvulaceae, with five species restricted to Africa, and one species widespread across the Paleotropics. It was initially established to accommodate two species in Merremia that possessed non-spinulose pantoporate pollen, rare in the family, along with stigma and anther characters that did not fit other genera entirely. Recent molecular studies, and the discovery of a new species in Central Africa, have expanded the delimitation of this genus from two to six species. Our survey captures the palynological variation of all currently documented species of Xenostegia, revealing that more types of pollen aperture patterns are present (15- and 30-colpate), with implications for the circumscription of the genus. In addition, a unique pattern of exine sculpture (plurigemmate-echinate) was discovered, which is shared by all the species and has not yet been documented in any other member of family Convolvulaceae.
摘要Xeostegia D.F.Austin et Staples是旋花科中的一个小属，有五种仅限于非洲，一种分布在古热带地区。它最初是为适应梅里亚的两个物种而建立的，这两个物种具有非刺状全孔花粉，在该科中很罕见，同时具有不完全适合其他属的柱头和花药特征。最近的分子研究，以及在中非发现的一个新物种，将该属的划界范围从两个扩大到六个。我们的调查捕捉到了目前所有记录在案的Xenosticia物种的孢粉学变化，揭示了更多类型的花粉孔模式（15-和30-colpate），这对该属的范围有影响。此外，还发现了一种独特的出口雕刻图案（多棱针叶树），所有物种都有这种图案，尚未在旋花科的任何其他成员中记录在案。
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Pub Date : 2021-12-16DOI: 10.1080/00173134.2021.1990397
E. Soares, Lorrayne Albernaz Domingues Camilo Landi, C. N. Souza, E. Gasparino
Abstract The pollen morphology of 17 species and three varieties of the native mimosoid clade of forest fragments of the Cerrado (Brazilian savanna) was studied in order to expand the knowledge on the morphology of genera and species of this group, in particular on the morphology of polyads, as well as add information to pollen studies for species of Caesalpinioideae occurring in the area. The pollen grains were acetolysed, measured, described qualitatively and illustrated under light microscopy and scanning electron microscopy (not acetolysed pollen grains). Pollen metric data were examined by descriptive and multivariate analysis. The studied species showed differences on the pollen units (monads or polyads) and variations in number and distribution of pollen grains in the polyads. Three pollen types were observed: type I, pollen grains in monads (Plathymenia reticulata); type II, polyads with one tapered end (drop shape – Calliandra parviflora); type III, polyads with uniform ends with asymmetrically distributed pollen grains (Stryphnodendron species); or symmetrically (with 16 or 20 pollen grains in Acacia plumosa, Albizia niopoides, Anadenanthera species, Inga marginata, Inga vera and Senegalia species and more than 20 pollen grains in Enterolobium contortisiliquum, Inga edulis and Inga sessilis). The qualitative differences and the measuremets of the diameters of the polyads, made it possible to distinguish the taxa and to confirm the eurypalynous character of the mimosoid clade (Caesalpinioideae, Fabaceae).
{"title":"Polyads types of the mimosoid clade (Caesalpinioideae, Fabaceae): size and pollen numbers variations","authors":"E. Soares, Lorrayne Albernaz Domingues Camilo Landi, C. N. Souza, E. Gasparino","doi":"10.1080/00173134.2021.1990397","DOIUrl":"https://doi.org/10.1080/00173134.2021.1990397","url":null,"abstract":"Abstract The pollen morphology of 17 species and three varieties of the native mimosoid clade of forest fragments of the Cerrado (Brazilian savanna) was studied in order to expand the knowledge on the morphology of genera and species of this group, in particular on the morphology of polyads, as well as add information to pollen studies for species of Caesalpinioideae occurring in the area. The pollen grains were acetolysed, measured, described qualitatively and illustrated under light microscopy and scanning electron microscopy (not acetolysed pollen grains). Pollen metric data were examined by descriptive and multivariate analysis. The studied species showed differences on the pollen units (monads or polyads) and variations in number and distribution of pollen grains in the polyads. Three pollen types were observed: type I, pollen grains in monads (Plathymenia reticulata); type II, polyads with one tapered end (drop shape – Calliandra parviflora); type III, polyads with uniform ends with asymmetrically distributed pollen grains (Stryphnodendron species); or symmetrically (with 16 or 20 pollen grains in Acacia plumosa, Albizia niopoides, Anadenanthera species, Inga marginata, Inga vera and Senegalia species and more than 20 pollen grains in Enterolobium contortisiliquum, Inga edulis and Inga sessilis). The qualitative differences and the measuremets of the diameters of the polyads, made it possible to distinguish the taxa and to confirm the eurypalynous character of the mimosoid clade (Caesalpinioideae, Fabaceae).","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"45 - 66"},"PeriodicalIF":0.9,"publicationDate":"2021-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43566421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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