I. Turner, F. Brearley, Liam A. Trethowan, T. Utteridge
{"title":"金合欢属（茜草科）铝积累调查","authors":"I. Turner, F. Brearley, Liam A. Trethowan, T. Utteridge","doi":"10.24823/EJB.2021.335","DOIUrl":null,"url":null,"abstract":"A useful character for spotting specimens of the pantropical Rubiaceae genus Eumachia is the leaves drying green. The physiological reasons for this are unresolved. We investigated whether the phenomenon is related to the accumulation of aluminium. Samples of foliage from herbarium specimens of nine species of Eumachia (Rubiaceae), including collections from Asia-Pacific, Africa and the Americas, were analysed for elemental concentrations. For comparison, specimens of the closely related genera Psychotria and Palicourea from similar geographical regions were also analysed. Two species, Palicourea violacea (Panama) and Psychotria pallens (Brazil) were found to be aluminium hyperaccumulators (≥ 1% Al by dry weight), with a third species, Eumachia collina (from New Caledonia), falling just short of the threshold with 0.99% Al. Aluminium accumulation (≥ 0.4% Al by dry weight) occurs but is infrequent among species of Eumachia and appears lesscommon than in the close relative Palicourea. Aluminium accumulation also appears patchy in Psychotria sensu stricto. It seems unlikely that herbarium greenness in Eumachia is directly related to aluminium accumulation.","PeriodicalId":39376,"journal":{"name":"Edinburgh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A SURVEY OF ALUMINIUM ACCUMULATION IN EUMACHIA (RUBIACEAE)\",\"authors\":\"I. Turner, F. Brearley, Liam A. Trethowan, T. Utteridge\",\"doi\":\"10.24823/EJB.2021.335\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A useful character for spotting specimens of the pantropical Rubiaceae genus Eumachia is the leaves drying green. The physiological reasons for this are unresolved. We investigated whether the phenomenon is related to the accumulation of aluminium. Samples of foliage from herbarium specimens of nine species of Eumachia (Rubiaceae), including collections from Asia-Pacific, Africa and the Americas, were analysed for elemental concentrations. For comparison, specimens of the closely related genera Psychotria and Palicourea from similar geographical regions were also analysed. Two species, Palicourea violacea (Panama) and Psychotria pallens (Brazil) were found to be aluminium hyperaccumulators (≥ 1% Al by dry weight), with a third species, Eumachia collina (from New Caledonia), falling just short of the threshold with 0.99% Al. Aluminium accumulation (≥ 0.4% Al by dry weight) occurs but is infrequent among species of Eumachia and appears lesscommon than in the close relative Palicourea. Aluminium accumulation also appears patchy in Psychotria sensu stricto. It seems unlikely that herbarium greenness in Eumachia is directly related to aluminium accumulation.\",\"PeriodicalId\":39376,\"journal\":{\"name\":\"Edinburgh Journal of Botany\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Edinburgh Journal of Botany\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.24823/EJB.2021.335\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Agricultural and Biological Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Edinburgh Journal of Botany","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.24823/EJB.2021.335","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
A SURVEY OF ALUMINIUM ACCUMULATION IN EUMACHIA (RUBIACEAE)
A useful character for spotting specimens of the pantropical Rubiaceae genus Eumachia is the leaves drying green. The physiological reasons for this are unresolved. We investigated whether the phenomenon is related to the accumulation of aluminium. Samples of foliage from herbarium specimens of nine species of Eumachia (Rubiaceae), including collections from Asia-Pacific, Africa and the Americas, were analysed for elemental concentrations. For comparison, specimens of the closely related genera Psychotria and Palicourea from similar geographical regions were also analysed. Two species, Palicourea violacea (Panama) and Psychotria pallens (Brazil) were found to be aluminium hyperaccumulators (≥ 1% Al by dry weight), with a third species, Eumachia collina (from New Caledonia), falling just short of the threshold with 0.99% Al. Aluminium accumulation (≥ 0.4% Al by dry weight) occurs but is infrequent among species of Eumachia and appears lesscommon than in the close relative Palicourea. Aluminium accumulation also appears patchy in Psychotria sensu stricto. It seems unlikely that herbarium greenness in Eumachia is directly related to aluminium accumulation.
期刊介绍：
Edinburgh Journal of Botany is an international journal of plant systematics covering related aspects of biodiversity, conservation science and phytogeography for plants and fungi. The journal is a particularly valued forum for research on South East and South West Asian, Sino-Himalayan and Brazilian biodiversity. The journal also publishes important work on European, Central American and African biodiversity and encourages submissions from throughout the world. Commissioned book reviews are also included. All papers are peer reviewed and an international editorial board provides a body of expertise to reflect the wide range of work published and the geographical spread of the journal’s authors and readers. Published on behalf of the Royal Botanic Garden Edinburgh
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