Cytologia最新文献

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Transcriptionally active regions are highly limited in the nucleus of the plant sperm cell 在植物精细胞的细胞核中,转录活性区域是非常有限的
4区 生物学
Cytologia Pub Date : 2023-09-25 DOI: 10.1508/cytologia.88.273
Mio K. Shibuta, Sachihiro Matsunaga
{"title":"Transcriptionally active regions are highly limited in the nucleus of the plant sperm cell","authors":"Mio K. Shibuta, Sachihiro Matsunaga","doi":"10.1508/cytologia.88.273","DOIUrl":"https://doi.org/10.1508/cytologia.88.273","url":null,"abstract":"Flowering plants have immotile sperm cells that are delivered to the female gametes by the pollen tube cell. Although the sperm chromatin in flowering plants is highly condensed like animal sperm chromatin, it is generally accepted that the transcription status in the sperm chromatin of flowering plants is active because of the existence of active gene promoters and active histone modification status. However, the level of transcriptional activity in the sperm chromatin of flowering plants has remained unknown. In this study, we observed the distribution of C-terminal domain-phosphorylated RNA polymerase II (RNAPII), which represents a transcriptionally active status in living pollen, and fixed isolated vegetative and sperm nuclei of Arabidopsis thaliana. We found that the transcriptionally active regions were highly limited in sperm chromatin compared with those in vegetative chromatin. RNA sequencing (RNA-seq) analysis showed that the transcription of some RNAPII subunit-encoding genes was highly suppressed in sperm cells, suggesting that the amount of functional RNAPII would be small. In addition, the C-terminal domains of some RNAPII phosphatase-encoding genes, which act as a regulator of the transcription cycle, were actively transcribed in sperm cells. These findings indicate that transcriptional activity is highly suppressed in the sperm chromatin in A. thaliana due to the lack of completely assembled RNAPII and the inhibition of transcriptional elongation of RNAPII by the phosphatase activities.","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135770899","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}
引用次数: 0
Professor Koichiro Tsunewaki: Virtuoso of wheat genetics Koichiro Tsunewaki教授:小麦遗传学大师
4区 生物学
Cytologia Pub Date : 2023-09-25 DOI: 10.1508/cytologia.88.175
Yasunari Ogihara
{"title":"Professor Koichiro Tsunewaki: Virtuoso of wheat genetics","authors":"Yasunari Ogihara","doi":"10.1508/cytologia.88.175","DOIUrl":"https://doi.org/10.1508/cytologia.88.175","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135770901","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}
引用次数: 0
Developmental differences between hermaphrodite and female-like flowers in a non-model horticultural plant <i>Dianthus hybrida</i> 雌雄同体花与雌花在非模式园艺植物中的发育差异&lt;i&gt;杂交石竹&lt;/i&gt
4区 生物学
Cytologia Pub Date : 2023-09-25 DOI: 10.1508/cytologia.88.265
Alvin Sanjaya, Taiki Kobayashi, Ryo Nishijima, Harue Shinoyama, Yusuke Kazama
{"title":"Developmental differences between hermaphrodite and female-like flowers in a non-model horticultural plant &lt;i&gt;Dianthus hybrida&lt;/i&gt;","authors":"Alvin Sanjaya, Taiki Kobayashi, Ryo Nishijima, Harue Shinoyama, Yusuke Kazama","doi":"10.1508/cytologia.88.265","DOIUrl":"https://doi.org/10.1508/cytologia.88.265","url":null,"abstract":"The popular ornamental flowering plant Dianthus hybrida cv. Telstar Scarlet has been found to exhibit two populations, each with distinct flower morphology: female-like and hermaphroditic. In this work, flower development of D. hybrida was characterized through scanning electron microscopy, light- or stereo- microscopy, from flower meristem formation to the fully matured, open flower. The difference between hermaphrodite and female-like plants was initially marked by the phenomenon of anther shrinking in the latter, which was closely associated with pollen shrinking phenomenon, and soon followed by differential elongation rates of pistils and stamens. Furthermore, the female-like anther, albeit exhibiting delay in pollen development initially, could produce microspores, resembling its hermaphrodite counterparts at some point, before shrinking. However, female-like’s pollen and cell wall size never became as large as the hermaphrodite’s.","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135770915","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}
引用次数: 0
Karyomorphological Investigation of the Eight Species of the Muscari Genus Botryanthus Subgenus Growing in Turkey 生长于土耳其的八种麝香属(Botryanthus)亚属的核形态研究
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.147
Y. Kıran, Leyla Yıldırım, G. Dogan, H. Eroğlu, S. M. Pinar
{"title":"Karyomorphological Investigation of the Eight Species of the Muscari Genus Botryanthus Subgenus Growing in Turkey","authors":"Y. Kıran, Leyla Yıldırım, G. Dogan, H. Eroğlu, S. M. Pinar","doi":"10.1508/cytologia.88.147","DOIUrl":"https://doi.org/10.1508/cytologia.88.147","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45382671","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}
引用次数: 0
Meiotic Behavior and Postmeiotic Pollen Formation in the F1 Hybrid Streptocarpus grandis×S. rexii (Gesneriaceae) and Its Parents 大链停车F1代的减数分裂行为和减数分裂后花粉的形成。雷(苦苣苔科)及其亲本
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.95
M. Möller, N. Kelso, K. Nishii
{"title":"Meiotic Behavior and Postmeiotic Pollen Formation in the F1 Hybrid Streptocarpus grandis×S. rexii (Gesneriaceae) and Its Parents","authors":"M. Möller, N. Kelso, K. Nishii","doi":"10.1508/cytologia.88.95","DOIUrl":"https://doi.org/10.1508/cytologia.88.95","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49519047","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}
引用次数: 0
Treatment of Silene latifolia Flower Buds with Peptides Containing Gynoecium-Suppressing Functions 含抑Gynoeciu功能的肽对宽叶Silene花蕾的处理
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.89
Taiki Kobayashi, Moe Kitoh, S. Kawano, Y. Kazama
{"title":"Treatment of Silene latifolia Flower Buds with Peptides Containing Gynoecium-Suppressing Functions","authors":"Taiki Kobayashi, Moe Kitoh, S. Kawano, Y. Kazama","doi":"10.1508/cytologia.88.89","DOIUrl":"https://doi.org/10.1508/cytologia.88.89","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49623372","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}
引用次数: 0
Segregation of the Univalent X Chromosome in the Two-Striped Planthopper Acanalonia bivittata 双条纹飞虱单价X染色体的分离
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.137
Ashley B. Borseth, Kristen D. Felt, Emily L. Stowe, L. Paliulis
{"title":"Segregation of the Univalent X Chromosome in the Two-Striped Planthopper Acanalonia bivittata","authors":"Ashley B. Borseth, Kristen D. Felt, Emily L. Stowe, L. Paliulis","doi":"10.1508/cytologia.88.137","DOIUrl":"https://doi.org/10.1508/cytologia.88.137","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42059591","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}
引用次数: 0
Existence of Two Cytotypes of Peganum harmala L. in Kashmir Himalaya and Ladakh Trans Himalaya of India 印度喀什米尔喜马拉雅地区和拉达克跨喜马拉雅地区两种细胞型的存在
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.111
N. Aslam, A. Wani, A. H. Ganie, I. A. Nawchoo
{"title":"Existence of Two Cytotypes of Peganum harmala L. in Kashmir Himalaya and Ladakh Trans Himalaya of India","authors":"N. Aslam, A. Wani, A. H. Ganie, I. A. Nawchoo","doi":"10.1508/cytologia.88.111","DOIUrl":"https://doi.org/10.1508/cytologia.88.111","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42186634","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}
引用次数: 1
Cytological Study of Begonia Sections Jackia, Platycentrum and Reichenheimia (Begoniaceae) with Chromosome Numbers 2n=34 and 38 染色体数目2n=34和38的秋海棠节Jackia、Platycentrum和Reichenheimia(秋海棠科)的细胞学研究
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.161
Yoshiko Kono, C. Peng, K. Oginuma, Hsun-An Yang, Kuo-Fang Chung
{"title":"Cytological Study of Begonia Sections Jackia, Platycentrum and Reichenheimia (Begoniaceae) with Chromosome Numbers 2n=34 and 38","authors":"Yoshiko Kono, C. Peng, K. Oginuma, Hsun-An Yang, Kuo-Fang Chung","doi":"10.1508/cytologia.88.161","DOIUrl":"https://doi.org/10.1508/cytologia.88.161","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49488021","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}
引用次数: 0
Changes in the Arrangement of Cellulose Microfibrils during Cell Wall Regeneration in the Protoplast of the Giant-Celled Green Alga Valonia utricularis (Ulvophyceae) 营养球藻(Ulvophyceae)原生质体细胞壁再生过程中纤维素微纤维排列的变化
IF 1 4区 生物学
Cytologia Pub Date : 2023-06-25 DOI: 10.1508/cytologia.88.121
I. Mine, G. Kawasaki, S. Sekida
{"title":"Changes in the Arrangement of Cellulose Microfibrils during Cell Wall Regeneration in the Protoplast of the Giant-Celled Green Alga Valonia utricularis (Ulvophyceae)","authors":"I. Mine, G. Kawasaki, S. Sekida","doi":"10.1508/cytologia.88.121","DOIUrl":"https://doi.org/10.1508/cytologia.88.121","url":null,"abstract":"","PeriodicalId":10992,"journal":{"name":"Cytologia","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42899398","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}
引用次数: 0
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