{"title":"Sinolobotheca gen. nov., a Late Devonian ovule without cupule and its implication for integument functions","authors":"D. Wang, Y. Pan, Y. Zhou, Lu Liu, M. Qin, Le Liu","doi":"10.1111/plb.13774","DOIUrl":null,"url":null,"abstract":"<p>\n </p>","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":"27 3","pages":"378-387"},"PeriodicalIF":3.6000,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Biology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/plb.13774","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
晚泥盆纪（法门纪）最早的种子植物的胚珠通常因保存而分离，并被一对儿包围。这些胚珠的功能需要更多的研究。根据野外采集的植物化石，我们用钢针制作了大量标本，并制作了许多胚珠横切面。结果，在中国法门系发现了一个新分类单元Sinolobotheca octa gen. et sp. nov.。它的胚珠顶生光滑的二分枝和缺乏小丘。每个胚珠具有8个独特的被片，近端融合，远端收敛，但在侧面分开，大部分不含珠心，具有长而平坦的单个裂片，沿侧壁向外弯曲，含有大量薄壁细胞。Sinolobotheca gen. 11 .证实了最早的胚珠通常生长在没有叶子的二分枝上。这表明，在法门胚珠中，偶对可能会丢失，珠被的复杂性（包括扁平化）和重要性增加。这也表明，除了保护、传粉和传播功能外，最早的胚珠在光合作用和营养/水分储存方面还进化出了额外的或新的功能。Sinolobotheca胚珠缺乏分化的心尖，可能不意味着早期种子植物的水叉生殖特征。
期刊介绍：
Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology.
Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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