Genetic diversity in populations of Maytenus dasyclada (Celastraceae) in forest reserves and unprotected Araucaria forest remnants

• Main Authors: Manuel Castilhos Reichmann, Camila Ângela Zanella, Cláudio Valério Júnior, Ana Claudia Piovezan Borges, Tanise Luisa Sausen, Natalia Paroul, Albanin Aparecida Mielniczki-Pereira, Amito José Teixeira, Jean Carlos Budke, Altemir José Mossi, Rogério Luis Cansian
• Format: Article
• Language: English
• Published: Sociedade Botânica do Brasil
• Series: Acta Botânica Brasílica
• Subjects: conservation; forest reserves; genetic diversity; Maytenus dasyclada; molecular markers
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100093&lng=en&tlng=en

ABSTRACT Understanding the genetic structure and diversity of plants is fundamental to their conservation and permits their sustainable use by local communities. The genus Maytenus (Celastraceae) is composed of plants possessing pharmacological and antioxidant properties. However, the genetic and economic properties of the species M. dasyclada, a typical species of Araucaria forests in Brazil and Uruguay, have been little studied. In this work, the genetic structure and diversity of natural populations of M. dasyclada located in unprotected and preserved forest remnants were investigated using RAPD and isozymes markers. The results demonstrated that in areas of preservation, populations of M. dasyclada possess a relatively high degree of polymorphism and high values for Na, Ne, Shannon index, He and Ho, indicating high genetic variability. Moreover, these protected populations are very close to each other and potentially experience significant gene flow. The results presented here highlight the relevance of preservation areas for the conservation of M. dasyclada, and that populations inhabiting these areas could serve as a genetic source for the recovery of populations in regions where genetic diversity has been lost.