Climate niches of milkweeds with plesiomorphic traits (Secamonoideae; Apocynaceae) and the milkweed sister group link ancient African climates and floral evolution.

@article{Livshultz2011ClimateNO,
  title={Climate niches of milkweeds with plesiomorphic traits (Secamonoideae; Apocynaceae) and the milkweed sister group link ancient African climates and floral evolution.},
  author={Tatyana Livshultz and Jerry V. Mead and David J. Goyder and Michelle T Brannin},
  journal={American journal of botany},
  year={2011},
  volume={98 12},
  pages={
          1966-77
        }
}
PREMISE OF THE STUDY Climate change that increases mortality of plants and pollinators can create mate-finding Allee effects and thus act as a strong selective force on floral morphology. Milkweeds (Secamonoideae and Asclepiadoideae; Apocynaceae) are typically small plants of seasonally dry habitats, with pollinia and high pollen-transfer efficiency. Their sister group (tribe Baisseeae and Dewevrella) is mostly comprised of giant lianas of African rainforests, with pollen in monads. Comparison… 
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References

SHOWING 1-10 OF 106 REFERENCES
The phylogenetic position of milkweeds (Apocynaceae subfamilies Secamonoideae and Asclepiadoideae): Evidence from the nucleus and chloroplast
TLDR
PHYA and chloroplast datasets under parsimony and maximum likelihood reject Periplocoideae as the milkweed sister group with statistical significance, and Rhabdadenia is placed as sister to the rest of the crown clade, consistent with aspects of its floral morphology and wood anatomy, but without statistical support.
A test for Allee effects in the self‐incompatible wasp‐pollinated milkweed Gomphocarpus physocarpus
TLDR
It is concluded that efficient pollination of plants in small founding populations, resulting from their generalist wasp-pollination system, contributes in part to the colonizing success of G. physocarpus.
Flower Structure and Reproductive Biology in Aspidosperma quebracho‐blanco (Apocynaceae), a Tree Pollinated by Deceit
TLDR
Floral features and nocturnal opening indicate that these flowers would be pollinated by moths that nocturnally visit the species (Noctuidae, Pyraloidea) finding no floral reward, and a nonmodel deception mechanism is suggested.
Floristic exchange between mainland Africa and Madagascar: case studies in Apocynaceae– Asclepiadoideae
TLDR
The comprehensive data elaborated during the last 15 years of systematic research in Asclepiadoideae were used to examine Leroy's hypothesis that Madagascar's flora resulted from an autochthonous Gondwanean stock and natural introduction of taxa in time and present evidence for successful long-distance dispersal events.
Pollination systems in the Asclepiadaceae: a survey and preliminary analysis☆
TLDR
A preliminary analysis of present-day pollination systems in the dicot family Asclepiadaceae (the ‘milkweeds’) is offered, and Stapelieae is the most specialized tribe, in terms of the taxonomic breadth of pollinators of individual species.
Pollen-ovule Ratios in Milkweeds (Asclepiadaceae): an Exception that Probes the Rule
TLDR
Data are consistent with the view that agglutination of pollen evolves in concert with ovule number to minimize the likelihood of receiving mixed pollen loads and are not consistent withThe view that pollen-ovule ratios reflect breeding system or pollination efficiency.
PHYLOGENY OF ACRIDOCARPUS‐BRACHYLOPHON (MALPIGHIACEAE): IMPLICATIONS FOR TERTIARY TROPICAL FLORAS AND AFROASIAN BIOGEOGRAPHY
TLDR
Dispersal‐vicariance analysis and divergence‐time estimates suggest that the basal acridocarpoid divergence occurred between African and Southeast Asian lineages approximately 50 million years ago (mya), perhaps after a southward ancestral retreat from high‐latitude tropical forests in response to intermittent Eocene cooling.
Specialized Pollination by Large Spider‐Hunting Wasps and Self‐Incompatibility in the African Milkweed Pachycarpus asperifolius
TLDR
It is concluded that P. asperifolius is specialized for pollination by large pompilid wasps and that its nectar functions as the primary filter of flower visitors.
Pollination and Reproductive Biology of Rauvolfia grandiflora (Apocynaceae): Secondary Pollen Presentation, Herkogamy and Self‐Incompatibility
TLDR
The pollination and reproductive biology of Rauvolfia grandiflora were studied in natural populations in the forest of the Recife Botanical Garden and were found to be self-incompatible, and the percentage of fruit set under natural conditions was low.
The reproductive biology of a riparian Mediterranean shrub, Nerium oleander L. (Apocynaceae)
TLDR
Direct and indirect evidence point to consistently pollen-limited reproduction in this Mediterranean species, an evergreen, sclerophyllous shrub inhabiting the banks of temporary streams in all countries around the Mediterranean seaboard.
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