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Abstract Detail

Systematics Section/ASPT

Warschefsky, Emily [1], Campbell, Richard [2], Hidayat, Topik [3], Von Wettberg, Eric [1].

A Preliminary Phylogeny for Mangifera (Anacardiaceae).

The mango (Mangifera indica, Anacardiaceae) is one of the world’s most beloved fruits and has been cultivated for an estimated 4,000 years or more. Despite M. indica’s long history of cultivation and economic importance, little is known about the evolutionary relationships of Mangifera species. The genus Mangifera contains 69 species, of which some 26 are regionally cultivated for their edible fruits. The native range of Mangifera stretches from eastern India to the Solomon Islands, with the highest diversity of species found in Borneo, Sumatra, and the Malay Peninsula. Species in the genus are adapted to habitats ranging from deciduous forests at mid-elevation to lowland mangrove swamps. Species also demonstrate variability in disease resistance, including resistance to mango anthracnose, which decimates mango populations around the world. The last taxonomic revision of Mangifera, completed two decades ago, was based on morphology, yet this classification remains the standard for species identification and taxonomy. To better understand the evolutionary relationships within the genus, individuals from 25 Mangifera species were sequenced over one nuclear (ITS) and two chloroplastic (matK, rbcL) loci. Three reconstruction paradigms – maximum parsimony, maximum likelihood, and Bayesian inference – were implemented to create the first multilocus phylogeny of Mangifera. Support for branches was estimated using bootstrapping for maximum likelihood trees and posterior probability for Bayesian inference trees. Hypotheses regarding monophyly of currently delimited taxa were tested using Shimodaira-Hasegawa (SH), Kishino-Hasegawa (KH), and approximately unbiased (AU) tests. The resulting phylogeny calls into question the monophyly of the current Mangifera classification and provides evidence of divergence between geographically isolated conspecific individuals. These findings have important implications for the taxonomy, biogeography, and conservation of Mangifera species as well as applications for mango cultivation and breeding programs.

Broader Impacts:

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1 - Florida International University, Biological Sciences, 11200 SW 8th St., OE 169, Miami, FL, 33199, United States
2 - Fairchild Tropical Botanic Garden, 10901 Old Cutler Road, Coral Gables, FL, 33156, USA
3 - Universitas Pendidikan Indonesia, jalan Setiabudi 229, Bandung, 40154, Indonesia

none specified

Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PSY033
Abstract ID:629
Candidate for Awards:None

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