NDLI: Reproductive isolation, gene flow and speciation in the former Coffea subgenus: a review

Content Provider	Springer Nature Link
Author	irot, Michel Charrier, André Stoffelen, Piet Anthony, François
Copyright Year	2015
Abstract	The former Coffea subgenus is a species complex showing qualitative gene flow and reproductive barriers between species. Such qualitative gene flow allowed its evolution over time, particularly during the successive forest expansion-regression cycles in relation with glaciation periods. The present paper reviews the main botanical, geographical and genetic characteristics of the Coffea genus and then focuses on the former Coffea subgenus. Its broad distribution in Africa, Madagascar and Mascarene Islands is related to the high diversity of ecological situations. The importance of sympatry and parapatry cases and their role on gene flow possibilities between species is then underlined in the paper. Such gene flow is nevertheless partially limited by reproductive barriers: flowering date, frequency of hybrid F1 emergence, as well as the vigor and fertility of such hybrids. When hybridization occurs, distortion of segregation and disruptive selection would allow qualitative flow of non-adaptative genes, thus limiting the effect of genetic drift in small populations. The last part of the paper defines the notion of metaspecies in the case of the former Coffea by extension of the concept of metapopulation to species. The evolution over time of a metaspecies is finally discussed in relation with sympatry situations, gene flow possibilities and forest fragmentation.
Starting Page	597
Ending Page	608
Page Count	12
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	30
Issue Number	3
e-ISSN	14322285
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-12-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coffea gene flow Metaspecies Reproductive barrier Speciation Sympatry Forestry Plant Sciences Agriculture Plant Anatomy/Development Plant Pathology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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