S. Razafimandimbison

Publications116
h-index25
Citations1,621
Highly Influential Citations109
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Spatial structure and the effects of host and soil environments on communities of ectomycorrhizal fungi in wooded savannas and rain forests of Continental Africa and Madagascar
TLDR
The low level of host preference indirectly supports an earlier hypothesis that pioneer Phyllanthaceae may facilitate the establishment of late successional Fabaceae and potentially other EcM host trees by providing compatible fungal inoculum in deforested and naturally disturbed ecosystems of tropical Africa.
Phylogeny and circumscription of Sapindaceae revisited: molecular sequence data, morphology and biogeography support recognition of a new family, Xanthoceraceae.
TLDR
The relationships of Xanthoceras are clarified based on phylogenetic analyses using a dataset encompassing nearly 3/4 of sapindaceous genera, comparing the results with information from morphology and biogeography, and support earlier suggestions that Harpullieae are polyphyletic.
Polyphyly of Mussaenda inferred from ITS and trnT-F data and its implication for generic limits in Mussaendeae (Rubiaceae).
TLDR
The studies strongly suggest an African origin of the newly circumscribed Mussaenda, whereas Bremeria can be distinguished from the remaining Mussaendeae genera by having both reduplicates- and induplicate-valvate aestivation and densely pubescent styles.
Recent origin and phylogenetic utility of divergent ITS putative pseudogenes: a case study from Naucleeae (Rubiaceae).
TLDR
These studies clearly show that ITS polymorphism may not necessarily mislead phylogenetic inference and, therefore, divergent putative pseudogenes can be useful for phylogenetic analyses, especially when no sequences of their functional counterparts are available.
Evolutionary Trends, Major Lineages, and New Generic Limits in the Dioecious Group of the Tribe Vanguerieae (Rubiaceae): Insights into the Evolution of Functional Dioecy1
TLDR
The results seem to point to a single origin of functional dioecy followed by subsequent reversals back to the hermaphroditic conditions at least within the Cyclophyllum–Canthium confertum clade and Pyrostria s.l., as the Comorean and Malagasy Canthium species are shown for the first time to be closely related to Peponidium.
A Revised Time Tree of the Asterids: Establishing a Temporal Framework For Evolutionary Studies of the Coffee Family (Rubiaceae)
TLDR
The updated age estimates for major groups of Rubiaceae provide a significant step forward towards the long term goal of establishing a robust temporal framework for the divergence of this biologically diverse and fascinating group of plants.
Age and historical biogeography of the pantropically distributed Spathelioideae (Rutaceae, Sapindales)
TLDR
This study presents molecular dating and biogeographical analyses of the subfamily Spathelioideae, the earliest branching clade (which includes eight extant genera), to interpret the temporal and spatial origins of this group, ascertaining possible vicariant patterns and dispersal routes and inferring diversification rates through time.
Phylogeny and generic limits in the sister tribes Psychotrieae and Palicoureeae (Rubiaceae): Evolution of schizocarps in Psychotria and origins of bacterial leaf nodules of the Malagasy species.
TLDR
A widely circumscribed Psychotria encompassing the entire Psychotrieae is supported, with two separate origins of schizocarps from drupes, one reversal back to the drupaceous condition, and two independent origins of the Malagasy leaf-nodulated species are inferred.
Evolutionary relationships in the Spermacoceae alliance (Rubiaceae) using information from six molecular loci: insights into systematic affinities of Neohymenopogon and Mouretia
TLDR
This work addresses evolutionary relationships in the Spermacoceae alliance (Rubioideae) with special emphasis on the Asian genera Mouretia and Neohymenopogon, here sequenced for the first time.
Deep divergences in the coffee family and the systematic position of Acranthera
TLDR
Nuclear ITS provided structured information at all phylogenetic levels, but the main gain from adding nrITS was the increased resolution and average support values also increased but were generally high also without nr ITS and the increase was not statistically significant.
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