scholarly journals Threatened and understudied: the lack of genetic data of endangered Brazilian plant species

2020 ◽  
Vol 42 ◽  
pp. e28
Author(s):  
Liliana Essi ◽  
Maria De Fátima Ribeiro Chicatte Lima ◽  
Leandro Gonçalves Leite ◽  
Mariana Marques Wolf
Keyword(s):  
Plant Species ◽  
Search Strategy ◽  
Genetic Data ◽  
Biodiversity Loss ◽  
Genetic Studies ◽  
Search Results ◽  
Phylogenetic Studies ◽  
Threatened Plant Species ◽  
Threat Categories ◽  
Data Deficient

A literature review of genetic studies on 3134 endangered or data deficient Brazilian plant species was performed using the Periodical Capes database, using, for each species, a combination of the binomial (without authorship) and the radical genet*. The search was only for articles, without publication year limitation. The search included relevant synonyms, based on information obtained from the National Flora Conservation Center (CNC Flora) website. Phylogenetic studies focusing on taxonomy or studies focusing on gene expression were excluded. A total of 14 463 articles were retrieved with this search strategy, but only 312 fit within the scope of the search. Results show that genetic studies for plants of all threat categories are lacking, with a very low average (0,09%) of genetic studies retrieved per species. The four threatened species with a higher number of studies are species of commercial interest. For 1931 species no article was retrieved. Given the high levels of biodiversity loss in Brazil, it is urgent to invest in the knowledge of the biology of threatened plant species, especially those which are the most neglected in genetic studies.

scholarly journals SURVEY ON THE NARROW ENDEMIC THREATENED PLANTS IN MADURAI DISTRICT OF TAMIL NADU, INDIA

2016 ◽  
Vol 3 (1) ◽  
pp. 56-58
Author(s):  
Jayakumar M ◽  
Karuppusamy S
Keyword(s):  
Plant Species ◽  
Tamil Nadu ◽  
Regional Scale ◽  
Sustainable Utilization ◽  
Threatened Plants ◽  
Narrow Endemic ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Threat Categories ◽  
Plant Survey

Medicinal plant survey was conducted and assessed the narrow endemic, endangered and threatened plants in Madurai district of Tamil Nadu during the year 2013-2014. There are 9 narrow endemic threatened plant species enumerated and further analysed their distribution with various threat categories both global and regional scale. Hygrophila madurensis is only one species were identified critically endangered and other species are not evaluated so for IUCN categories but they are distributed narrowly to Madurai and adjacent districts of Tamil Nadu. The data provide the information for diversity of threatened plant species to design the sustainable utilization and conservation measures.

Threatened Plant Species of Mindoro, Philippines

2015 ◽  
Vol 14 (1) ◽  
Author(s):  
ELAINE LOREEN C. VILLANUEVA ◽  
INOCENCIO E. BUOT, JR.
Keyword(s):  
Plant Species ◽  
Anthropogenic Activities ◽  
Local Level ◽  
Conservation Status ◽  
Biodiversity Loss ◽  
International Union ◽  
Threatened Plants ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Plant Families

There have been some studies on the plant species found in Mindoro, Philippines, but there remains little information in their status particularly at the local level. This paper presents a list of threatened plant species of Mindoro. A list of indicators of the conservation status was formulated for this particular study and was used for categorizing the threatened plant species at the local level. The list recorded 173 threatened plant species from 70 plant families, which are composed of 25 Critically Endangered (CR), 46 Endangered (EN) and 102 Vulnerable (VU) plant species. The species were found to be threatened because of their endemicity, as well as some anthropogenic activities that could lead to the destruction of their habitats and ultimately, their extinction. There are still existing gaps in the knowledge of the flora of Mindoro, and when these gaps are addressed, it is possible that more rare and threatened plants will be added to the list. It is also recommended to utilize the data in the enactment of the laws to address the threats to plant biodiversity loss. Keywords - Botany, threatened plant species, Mindoro, conservation status, International Union for the Conservation of Nature (IUCN), Department of Environment and Natural Resources (DENR), Mindoro, Philippines

scholarly journals Phenotyping and genetic studies of 357 consecutive patients presenting with premature ovarian failure

2009 ◽  
Vol 161 (1) ◽  
pp. 179-187 ◽  
Author(s):  
Anne Bachelot ◽  
Agnès Rouxel ◽  
Nathalie Massin ◽  
Jérome Dulon ◽  
Carine Courtillot ◽  
...  
Keyword(s):  
Premature Ovarian Failure ◽  
Chromosomal Abnormalities ◽  
Phenotypic Variability ◽  
Genetic Data ◽  
Ovarian Failure ◽  
Mineral Density ◽  
Genetic Studies ◽  
Autoimmune Polyendocrine Syndrome ◽  
Design And Methods

ObjectivePremature ovarian failure (POF) encompasses a heterogeneous spectrum of conditions, with phenotypic variability among patients. The etiology of POF remains unknown in most cases. We performed a global phenotyping of POF women with the aim of better orienting attempts at an etiological diagnosis.Design and methodsWe performed a mixed retrospective and prospective study of clinical, biological, histological, morphological, and genetic data relating to 357 consecutive POF patients between 1997 and 2008. The study was conducted at a reproductive endocrinology referral center.ResultsSeventy-six percent of the patients presented with normal puberty and secondary amenorrhea. Family history was present in 14% of the patients, clinical and/or biological autoimmunity in 14.3%. Fifty-six women had a fluctuating form of POF. The presence of follicles was suggested at ultrasonography in 50% of the patients, and observed in 29% at histology; the negative predictive value of the presence of follicles at ultrasonography was 77%. Bone mineral density alterations were found in 58% of the women. Eight patients had X chromosomal abnormalities other than Turner's syndrome, eight other patients evidenced FMR1 pre-mutation. Two other patients had autoimmune polyendocrine syndrome type 2 and 1.ConclusionA genetic cause of POF was identified in 25 patients, i.e. 7% of the whole cohort. POF etiology remains most often undiscovered. Novel strategies of POF phenotyping are in such content mandatory to improve the rate of POF patients for whom etiology is identified.

Are listed threatened plant species actually at risk?

2002 ◽  
Vol 50 (1) ◽  
pp. 1 ◽  
Author(s):  
Mark A. Burgman
Keyword(s):  
Plant Species ◽  
Threatened Species ◽  
Feedback Loop ◽  
Conservation Status ◽  
The State ◽  
Scarce Resources ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Legal Mandates ◽  
State Of The Environment

Despite the fact that the most changes in lists of threatened species reflect changes in knowledge rather than changes in conservation status, the lists continue to provide social and legal mandates for conservation; they are used to report on the state of the environment and to guide the allocation of scarce resources. There is a substantial under-representation of non-vascular species in threatened plant lists, reflected in an absence of documented extinctions among fungi and algae. Turnover in the composition of extinct flora lists in Australia suggests that the lists of threatened species may not be sufficiently reliable to form the basis for reporting on the state of the environment. They are of limited use in distinguishing between levels of threat and may not be a reliable guide for the allocation of scarce conservation resources among plant species. Systems for listing threatened species create a feedback loop, responsive to the subjective preferences of scientists, largely unresponsive to underlying true threats, self-perpetuating and accentuating bias with each iteration. Other tools, including formal decision approaches and the acquisition of new kinds of data, are needed to fill the roles.

Using summed individual species models and state-of-the-art modelling techniques to identify threatened plant species hotspots

2009 ◽  
Vol 142 (11) ◽  
pp. 2501-2509 ◽  
Author(s):  
Miia Parviainen ◽  
Mathieu Marmion ◽  
Miska Luoto ◽  
Wilfried Thuiller ◽  
Risto K. Heikkinen
Keyword(s):  
Plant Species ◽  
State Of The Art ◽  
Individual Species ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Modelling Techniques

Subspecies definitions and legislation: from eastern wallaroo (Osphranter robustus robustus) to euro (Osphranter robustus erubescens)

2019 ◽  
Vol 41 (1) ◽  
pp. 65 ◽  
Author(s):  
Barry J. Richardson
Keyword(s):  
Species Concept ◽  
Genetic Data ◽  
Ecological Approach ◽  
Phylogenetic Species ◽  
Management Decisions ◽  
Evolutionary Trajectory ◽  
Genetic Studies ◽  
Phylogenetic Species Concept ◽  
Population Structuring ◽  
Traditional Approaches

As a consequence of genetic studies of population structuring, the usefulness of subspecies has been questioned, with opinions divided. The situation is further confused by the use of varying species and subspecies concepts. Most alternatives require each taxon to be following an independent evolutionary trajectory. These include traditional approaches and the more recent phylogenetic species concept. The latter has led to large increases in the apparent number of taxa in some groups, though strong objections have been raised to this approach. An alternative, the ecological species concept, has been opposed by phylogeneticists. These two approaches are compared using morphological and genetic data from common wallaroo (Osphranter robustus) populations. The different taxonomies that might result (many species, one species with two subspecies, one species with no subspecies) can have significant consequences for legislative and management decisions. The ecological approach is considered preferable for subspecies and the present taxonomy is maintained. A potential location of the boundary between the wallaroo subspecies is proposed. How the use of the different subspecies definitions would affect legislative decisions is explored.

scholarly journals New locations of rare and protected plant species of the aquatic ecosystems of Minsk Region and National park “Belovezhskaya Pushcha”

2018 ◽  
Vol 63 (4) ◽  
pp. 437-446
Author(s):  
K. L. Savitskaya ◽  
М. A. Dzhus
Keyword(s):  
Plant Species ◽  
National Park ◽  
Aquatic Plant ◽  
New Information ◽  
New Locations ◽  
Salvinia Natans ◽  
The Republic ◽  
Data Deficient ◽  
First Time ◽  
Berula Erecta

There is a review of floral studies of the water bodies in Minsk Region and National Park “Belovezhskaya Pushcha”. 75 new locations of 20 rare aquatic and riverside plant species coming at the water and 1 hybrid were found. 7 of these species are listed in the Red Book of the Republic of Belarus, 5 species are included into the category of Least Concern and Data Deficient. Potamogeton berchtoldii Fieber, Utricularia minor L., Potamogeton acutifolius Link, P. nodosus Poir., Salvinia natans (L.) All. are reported for the first time from National Park «Belovezhskaya Pushcha». The spreading of Berula erecta (Huds.) Coville on the territory of National Park is considered in detail. New locations of Nuphar pumila (Timm) DC., Ranunculus kauffmannii Clerc., Najas major All., Berula erecta, Glyceria lithuanica (Gorski) Gorski, Conioselinum tatari­ cum Hoffm. in Minsk Region, which were not included in 4th edition of the Red Book, have been described. A brief description of habitat environmental conditions is given for the revealed species of aquatic plants, and their phytocoenotic confinement is also pointed out. New information on the locations of protected aquatic plant species should be used to monitor their populations and prepare the documents of protection.

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