These plants are important traditional components of rural diets worldwide, even though their use is some. One of the benefits of being a member of tcs is the quarterly newsletter. Unlocking a high bacterial diversity in the coralloid root. Ethnobotany and conservation of tiusinte dioon mejiae standl. An outline of our current knowledge on mexican cycads. Issue one, page 7 may be text or image abbreviations cv. Cycad international supplier and exporter of cycad species.
The information within this collection does not reflect the views of the smithsonian institution, but is available in its original form to facilitate research. Ethnobotany of mexican and northern central american cycads. Published in 2003, this 86page document brings together a collection of data and opinions on one of the worlds most threatened plant groups and presents a series of action plans to promote their conservation. Ethnobotany and conservation of tiusinte dioon mejiae. Transcribe page 177 of 500 smithsonian digital volunteers.
Dioon mejiae dioon merolaegolden dioonoaxaca dioon merolaelas minaschiapas dioon mixtequensis dioon rzedowskii dioon sonorense. Female cones are harvested for their seeds, which are processed and made into tamales, tortillas, and other products. Illegal trade central and south americathere are also several other species that do not appear in cites trade records as wildcollected specimens, but where cycad experts report that wild harvesting, probably forinternational trade, is a threat to wild. The latter develops many meters of trunk and tends to have a few spines on the leaflets even in adult plants. Dioon califanoi zamiaceae, a new species from mexico. Rna extracted from leaves of the cycad dioon mejiae and purified using this protocol was recently used successfully for rnaseq, and rna from cone scales of the cycad macrozamia lucida was successfully used for highquality qpcr.
Jody haynes personal profile on cycad research, education. However, it is not a legal authority for statutory or regulatory purposes. Leaves of the plant are also used in this region for catholic ritualistic purposes. Using 16s rrna gene amplicon sequencing, we found that all coralloid roots are inhabited by a broad diversity of bacterial groups, including cyanobacteria and. Pdf dioon rzedowskii zamiaceae, a new species from mexico. The genus dioon is particularly difficult to work with taxonomically because the. A new mexican species of dioon has been found in oaxaca, dioon califanoi, characterized by keeled fronds and leaflets inserted obliquely above the rachis. Interview of local people 155 secondary data collection. Dioon species are also very popular with international collectors. Dec, 2014 media in category dioon the following 10 files are in this category, out of 10 total. Median leaflets of adult leaves lanceolate, not pungent. Molecular systematic studies in cycads missouri botanical garden. A method for extracting highquality rna from diverse.
The stem of the genus dioon was constrained by a height of 56 ma, as defined by the fossil showing the greatest macromorphological resemblance to dioon, dioonopsis praespinulosa hollick, 1932. The most important publication of the iucnssc cycad specialist group csg released to date is the cycad action plan. Below is a recent paper on the ethnobotany and conservation status of dioon mejiaeknown locally as tiusintein honduras. Despite the widespread distribution and ecological.
Common names include palma teosinte, teocinte, teocinta, teocintle, teocsinte, teosinte, tiusinte, and tusinte, all of which mean sacred ear. We obtained a maximum likelihood estimate of dioon phylogenetic relationships using a concatenated data set for all nuclear loci fig. Native to honduras and nicaragua, where its common name is teosinte, dioon mejiae. We describe the bacterial diversity of the coralloid roots from seven dioon species and their surrounding rhizosphere and soil. Plants culturally associated with tiusinte dioon mejiae.
A method for extracting highquality rna from diverse plants. This paper describes the significance of the arborescent cycad. The distribution area includes honduras and parts of mexico. Palma teosinte, teocinte, teocinta, tiusinte nahuatl. Dioon holmgrenii is an edulelike species from the pacific coast of oaxaca and is similar to dioon edule in its needs so they dont need to be repeated. Ethnobotany c hap te r 11 the ethnobotany of cycas in the states of assam and meghalaya, india khuraijam jibankumar singh and rita singh abstract 152 resumen 152 introduction 153 study area 154 methods 155 primary data collection. According to a report from the 1992 washington convention on biological diversity, trade with d. Dioon species can be found in central america between the 15th and 29th northern latitude and are part of the neotropical floral kingdom. Using diverse techniques, teosinte flour was found to be a highcalorie food rich in total carbohydrates and mainly composed. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. It show well developed aerial stems growing in habitat up to 1 m in length over centuries. Common names include palma teosinte, teocinte, teocinta female, teocintle, teocsinte, teosinte, tiusinte, and tusinte, all of which mean sacred ear.
It is a very tropical looking dioon that resembles dioon spinulosum, though usually much shorter, or dioon rzedowskii in appearance. Pdf ethnobotany and conservation of tiusinte dioon mejiae. In honduras, it is found in the departments of colon, olancho, and yoro. The ethnobotany of cycas in the states of assam and. Epidermal morphology and leaflet anatomy of dioon zamiaceae. Proceedings of the 7 th international conference on cycad biology, xalapa, mexico, january 2005. Rio verde dioon edulequeretaro blue form dioon holmgrenii dioon mejiae dioon merolaegolden dioonoaxaca dioon merolaelas minaschiapas dioon mixtequensis dioon rzedowskii dioon sonorense dioon sp. Dioon mejiae is a small to medium, erect and usually unbranched cycad species mimicking the look of short palm trees. Dioon occurs in restricted pockets throughout mexico, with one species d. Interviews of traditional healers 155 collection of plant material 155.
Dioon mejiae presents a similar reduction of papillae and number of thickwalled encircling cells, thus resulting in a shallow pit. Encephalartos chimanimaniensis at the world list of cycads. The genus dioon occupies an important phylogenetic position as sister to the other zamiaceae. Dichotomous keydioon wikibooks, open books for an open world. Alternatively, download the entire 90 page stgindex. We hypothesized that cycads are significant dietary items with no. Agronomy free fulltext teosinte dioon mejiae flour. Leaves are used for a variety of catholic celebrations. We employed scanning and transmission electron microscopy, confocal microscopy and light microscopy to examine the epidermal and cuticular morphology of 12 of the 14 currently recognized species of dioon, examining cultivated plants and. Cycads in the south florida landscape pages 1 7 text. The objective was to evaluate the nutritional and physicochemical composition of teosinte flour for the first time. Dioon mejiae is a species of cycad that is native to honduras and nicaragua.
Teosinte dioon mejiae is a dioecious tree native to honduras, whose seeds are used to make flour for the preparation of traditional foods and beverages. The impetus was acute need for a better understanding of previously undocumented uses of cycads in this region, and the need to improve cycad conservation strategies using ethnobotanical data. Bart schutzman, revolutionized the cycad newsletter into a fullcolor publication with a mix of scientific, horticultural, and expeditionrelated stories. Pdf dioon rzedowskii zamiaceae, a new species from.
Examples include liakra in italy, quelites in mexico, tiusinte dioon mejiae standl. Isolation, characterization and crossspecies amplification. Cycads are among the few plants that have developed specialized roots to host nitrogenfixing bacteria. Dec 09, 20 this procedure further purifies extracted rna, removing metabolites and other contaminants.981 686 511 571 743 897 1142 1393 182 132 1268 413 535 476 1264 1287 245 689 617 817 629 1285 839 124 592 1225 46 76 1034 683 195 337 1380 1417 1426 1169