{"title":"尼日利亚尼日尔三角洲部分地区特有Anthocleista物种在水分梯度下的生态适应","authors":"Edwin-Wosu Nsirim Lucky, Omara-Achong Theresa Ebia, Idogun Ejiro Praise","doi":"10.9734/jabb/2021/v24i1030245","DOIUrl":null,"url":null,"abstract":"Background: Knowledge of the anatomy of Anthocleista species is crucial for understanding how these plants adapt to the environment. \nAim: This study was aimed at investigating the adaptive relationship of moisture gradient influence on the anatomy of four species in the genus Anthocleista (A djalonesis A Chev; A. liebrechtsiana De Wild & Th.Dur; A. nobilis G.Don; and A. vogelii Planch) in light of ecological niche adaptation. Place of Study: parts of Akwa-Ibom, Bayelsa, Cross River and Rivers States in the Niger Delta. Methods: Conventional classical anatomical techniques for structural sectioning were used. \nResults: Though there are similarities and differences in vascular structure among the species, the study has revealed variance in anatomical responses to moisture gradient (ranging from dry mesophytic to mesophytic and wetland conditions) of adaptation. The most important and distinct features observed are the presence of sclerenchymatous idioblast, air sacs and sclereidal idioblast. Sclerenchymatous idioblasts are numerous in A liebrechtsiana, few in A. nobilis and A. vogelii but lacking in A. djalonesis. The sclerenchymatous idioblast in A. liebrechtsiana, A. nobilis, and A. vogelii confirmed these species to be mesophytic to semi-aquatic in their habitat adaptation; while A. djalonesis is dry-mesophytic in adaptation with thicker epidermal layer, multiple hypodermal layers, thicker mesophyll tissues with increased number of palisade layers and thick leaves. The stem and root modification had abundance sclereidal idioblast distribution in A. liebrechtsiana, and A. nobilis, moderate in A. vogelii and very low in A. djalonesis. \nConclusion: The variation observed in the leaf, petiole, stem and root anatomical characters are due to moisture gradient influence with the resultant effect of plant species evolving structures such as idioblast and modification to adapt to the niche and environment where they find themselves.","PeriodicalId":15023,"journal":{"name":"Journal of Advances in Biology & Biotechnology","volume":"25 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ecological Adaptation of Endemic Anthocleista Species under Moisture Gradient in Parts of Niger Delta, Nigeria\",\"authors\":\"Edwin-Wosu Nsirim Lucky, Omara-Achong Theresa Ebia, Idogun Ejiro Praise\",\"doi\":\"10.9734/jabb/2021/v24i1030245\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Background: Knowledge of the anatomy of Anthocleista species is crucial for understanding how these plants adapt to the environment. \\nAim: This study was aimed at investigating the adaptive relationship of moisture gradient influence on the anatomy of four species in the genus Anthocleista (A djalonesis A Chev; A. liebrechtsiana De Wild & Th.Dur; A. nobilis G.Don; and A. vogelii Planch) in light of ecological niche adaptation. Place of Study: parts of Akwa-Ibom, Bayelsa, Cross River and Rivers States in the Niger Delta. Methods: Conventional classical anatomical techniques for structural sectioning were used. \\nResults: Though there are similarities and differences in vascular structure among the species, the study has revealed variance in anatomical responses to moisture gradient (ranging from dry mesophytic to mesophytic and wetland conditions) of adaptation. The most important and distinct features observed are the presence of sclerenchymatous idioblast, air sacs and sclereidal idioblast. Sclerenchymatous idioblasts are numerous in A liebrechtsiana, few in A. nobilis and A. vogelii but lacking in A. djalonesis. The sclerenchymatous idioblast in A. liebrechtsiana, A. nobilis, and A. vogelii confirmed these species to be mesophytic to semi-aquatic in their habitat adaptation; while A. djalonesis is dry-mesophytic in adaptation with thicker epidermal layer, multiple hypodermal layers, thicker mesophyll tissues with increased number of palisade layers and thick leaves. The stem and root modification had abundance sclereidal idioblast distribution in A. liebrechtsiana, and A. nobilis, moderate in A. vogelii and very low in A. djalonesis. \\nConclusion: The variation observed in the leaf, petiole, stem and root anatomical characters are due to moisture gradient influence with the resultant effect of plant species evolving structures such as idioblast and modification to adapt to the niche and environment where they find themselves.\",\"PeriodicalId\":15023,\"journal\":{\"name\":\"Journal of Advances in Biology & Biotechnology\",\"volume\":\"25 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Advances in Biology & Biotechnology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.9734/jabb/2021/v24i1030245\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advances in Biology & Biotechnology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9734/jabb/2021/v24i1030245","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
背景:了解Anthocleista物种的解剖学知识对于了解这些植物如何适应环境至关重要。目的:探讨水分梯度对四种Anthocleista (A djalonesis A Chev)属植物解剖结构的适应关系;A. liebrechtsiana De Wild & Th.Dur;A. nobilis G.Don;(A. vogelii Planch)。研究地点:尼日尔三角洲的阿夸-伊博姆、巴耶尔萨、克罗斯河和河流州的部分地区。方法:采用传统的经典解剖技术进行结构切片。结果:虽然不同种属间维管结构存在异同,但研究揭示了不同种属对水分梯度(从干叶生到叶生和湿地)适应的解剖响应存在差异。观察到的最重要和最明显的特征是存在厚壁细胞异母细胞、气囊和硬壁异母细胞。厚壁细胞异母细胞在A. liebrechtsiana中数量较多,在A. nobilis和A. vogelii中数量较少,而在A. djalonesis中缺乏。liebrechtsiana、nobilis和A. vogelii的厚壁细胞异母细胞证实了它们的生境适应性为中生-半水生;干叶肉适应性强,表皮层较厚,下皮层较多,叶肉组织较厚,栅栏层数增加,叶片较厚。茎、根变异的核状异母细胞分布丰富,黄花蒿居中,黄花蒿极低。结论:叶片、叶柄、茎和根解剖特征的变化是由于湿度梯度的影响,以及植物物种为适应所处的生态位和环境而进化成异母细胞和修饰等结构的结果。
Ecological Adaptation of Endemic Anthocleista Species under Moisture Gradient in Parts of Niger Delta, Nigeria
Background: Knowledge of the anatomy of Anthocleista species is crucial for understanding how these plants adapt to the environment.
Aim: This study was aimed at investigating the adaptive relationship of moisture gradient influence on the anatomy of four species in the genus Anthocleista (A djalonesis A Chev; A. liebrechtsiana De Wild & Th.Dur; A. nobilis G.Don; and A. vogelii Planch) in light of ecological niche adaptation. Place of Study: parts of Akwa-Ibom, Bayelsa, Cross River and Rivers States in the Niger Delta. Methods: Conventional classical anatomical techniques for structural sectioning were used.
Results: Though there are similarities and differences in vascular structure among the species, the study has revealed variance in anatomical responses to moisture gradient (ranging from dry mesophytic to mesophytic and wetland conditions) of adaptation. The most important and distinct features observed are the presence of sclerenchymatous idioblast, air sacs and sclereidal idioblast. Sclerenchymatous idioblasts are numerous in A liebrechtsiana, few in A. nobilis and A. vogelii but lacking in A. djalonesis. The sclerenchymatous idioblast in A. liebrechtsiana, A. nobilis, and A. vogelii confirmed these species to be mesophytic to semi-aquatic in their habitat adaptation; while A. djalonesis is dry-mesophytic in adaptation with thicker epidermal layer, multiple hypodermal layers, thicker mesophyll tissues with increased number of palisade layers and thick leaves. The stem and root modification had abundance sclereidal idioblast distribution in A. liebrechtsiana, and A. nobilis, moderate in A. vogelii and very low in A. djalonesis.
Conclusion: The variation observed in the leaf, petiole, stem and root anatomical characters are due to moisture gradient influence with the resultant effect of plant species evolving structures such as idioblast and modification to adapt to the niche and environment where they find themselves.