印度新记录的Phymatoceros Stotler等(anthocerotopphy门)与一新种P. binsarensis

IF 1.2 3区 生物学 Q3 PLANT SCIENCES
A. K. Asthana, Darshan Shukla, Reesa Gupta
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An SEM study of spores was also carried out to examine their ultramorphological characters.Key results The plants were found to be remarkably characterised by a narrow thallus with prolific stalked tubers arising from the mid-ventral surface; female plants with short involucres; single rounded to irregular chloroplast per cell, without a pyrenoid; and spore distal face with a large, central, single, pitted central hump, and the proximal face with a distinct single dimple on each tetrahedral area between triradiate rays. A detailed morphotaxonomic account is presented, along with detailed SEM observations of spores of the Indian plants.Conclusion Our critical comparative study has revealed that the plants of the newly recorded population belong to the genus Phymatoceros and are distinct from hitherto known species. They are described here as a new species, Phymatoceros binsarensis A.K.Asthana, D.Shukla & Reesa Gupta, and are the first record of Phymatoceros in India. 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引用次数: 0

摘要

【摘要】简介Phymatoceros Stotler et al.是现存的14属角worts属之一,全世界仅有2种。在我们对印度角苔的研究中,在北阿坎德邦的宾萨尔发现了一个明显变化的种群,并且与喜马拉雅Phaeoceros喜马拉雅(Kashyap) Prosk共享同一个栖息地。前Bapna & G.G.Vyas和Phaeoceros laevis (L.)Prosk。方法对勒克瑙CSIR-NBRI (LWG)的标本进行批判性研究。还对孢子进行了扫描电镜研究,以检验其超变质特征。发现该植物的显著特征是:狭窄的菌体,从中腹面长出大量的茎块茎;雌花具短总苞;单个圆形到不规则的叶绿体每细胞,没有类核蛋白;孢子远端表面有一个大的、中央的、单一的、凹陷的中央驼峰,近端表面在三辐射射线之间的每个四面体区域上有一个明显的单个酒窝。一个详细的形态分类帐户提出,连同详细的扫描电镜观察孢子的印度植物。结论新记录种群的植物属Phymatoceros属,与已知物种有明显区别。它们被描述为一个新物种,Phymatoceros binsarensis a.k.a asthana, D.Shukla & Reesa Gupta,是印度首次记录的Phymatoceros。因此,它们代表了该属在亚洲的一个显著而有趣的分离出现,与它在其他四大洲(非洲、欧洲、北美和南美)的分布分开。作者感谢勒克瑙CSIR-NBRI主任的鼓励和提供的设施。在我们访问研究区域期间,北阿坎德邦森林部给予了帮助。作者感谢CSIR-NBRI伦理委员会的建议和提供MS No。CSIR-NBRI_MS/2022/05/09为当前通信。披露声明作者未报告潜在的利益冲突。感谢塞尔维亚(文件编号:。CRG/2019/002760),提供财政援助。关于贡献者的说明。k . AsthanaA。K. Asthana是勒克瑙CSIR-NBRI苔藓学实验室的高级首席科学家。他的主要研究工作是印度角苔的分类、多样性评估和印度苔藓植物的保护。ladarshan Shukla是勒克瑙CSIR-NBRI苔藓实验室的项目助理。他的主要研究工作是印度特有的角苔的分类。Reesa Gupta是勒克瑙CSIR-NBRI苔藓学实验室的高级研究员。她的主要研究工作是印度苔藓植物的多样性评估和生态学,以及生物勘探研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phymatoceros Stotler et al. (Anthocerotophyta) newly recorded from India with a new species, P. binsarensis
ABSTRACTIntroduction Phymatoceros Stotler et al., one of the 14 extant genera of hornworts, is known from only two species worldwide. During our studies of Indian hornworts, a distinctly variable population was found at Binsar, Uttarakhand, and sharing the same habitat as Phaeoceros himalayensis (Kashyap) Prosk. ex Bapna & G.G.Vyas and Phaeoceros laevis (L.) Prosk.Methods A critical study of the specimens housed at CSIR–NBRI, Lucknow (LWG) was conducted. An SEM study of spores was also carried out to examine their ultramorphological characters.Key results The plants were found to be remarkably characterised by a narrow thallus with prolific stalked tubers arising from the mid-ventral surface; female plants with short involucres; single rounded to irregular chloroplast per cell, without a pyrenoid; and spore distal face with a large, central, single, pitted central hump, and the proximal face with a distinct single dimple on each tetrahedral area between triradiate rays. A detailed morphotaxonomic account is presented, along with detailed SEM observations of spores of the Indian plants.Conclusion Our critical comparative study has revealed that the plants of the newly recorded population belong to the genus Phymatoceros and are distinct from hitherto known species. They are described here as a new species, Phymatoceros binsarensis A.K.Asthana, D.Shukla & Reesa Gupta, and are the first record of Phymatoceros in India. As such, they represent a remarkable and interesting disjunct occurrence of the genus in Asia, separate from its distribution in four other continents (Africa, Europe, and North and South America). AcknowledgementsThe authors are grateful to the Director, CSIR–NBRI, Lucknow, for encouragement and providing facilities. The Forest Department of Uttarakhand is acknowledged for help given during our visit to the study area. The authors are thankful to the ethical committee of CSIR–NBRI for suggestions and for providing MS No. CSIR-NBRI_MS/2022/05/09 for the present communication.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThanks are due to SERB (File No. CRG/2019/002760), New Delhi, for providing financial assistance.Notes on contributorsA. K. AsthanaA. K. Asthana is a senior principal scientist at the Bryology Laboratory, CSIR–NBRI, Lucknow. His main research work is on the taxonomy of Indian hornworts, assessment of diversity, and conservation of Indian bryophytes.Darshan ShuklaDarshan Shukla is a project assistant at the Bryology Laboratory, CSIR–NBRI, Lucknow. His main research work is on the taxonomy of endemic Indian hornworts.Reesa GuptaReesa Gupta is a senior research associate at the Bryology Laboratory, CSIR–NBRI, Lucknow. Her main research work is on diversity assessment and the ecology of Indian bryophytes, as well as bioprospecting studies.
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来源期刊
Journal of Bryology
Journal of Bryology 生物-植物科学
CiteScore
4.50
自引率
31.60%
发文量
20
审稿时长
3 months
期刊介绍: Journal of Bryology exists to promote the scientific study of bryophytes (mosses, peat-mosses, liverworts and hornworts) and to foster understanding of the wider aspects of bryology. Journal of Bryology is an international botanical periodical which publishes original research papers in cell biology, anatomy, development, genetics, physiology, chemistry, ecology, paleobotany, evolution, taxonomy, molecular systematics, applied biology, conservation, biomonitoring and biogeography of bryophytes, and also significant new check-lists and descriptive floras of poorly known regions and studies on the role of bryophytes in human affairs, and the lives of notable bryologists.
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