The diversity and evolution of pollination systems in large plant clades: Apocynaceae as a case study

OLLERTON, JEFF; LIEDE-SCHUMANN, SIGRID; ENDRESS, MARY E; MEVE, ULRICH; RECH, ANDRÉ RODRIGO; SHUTTLEWORTH, ADAM; KELLER, HÉCTOR A; FISHBEIN, MARK; ALVARADO-CÁRDENAS, LEONARDO O; AMORIM, FELIPE W; BERNHARDT, PETER; CELEP, FERHAT; CHIRANGO, YOLANDA; CHIRIBOGA-ARROYO, FIDEL; CIVEYREL, LAURE; COCUCCI, ANDREA; CRANMER, LOUISE; DA SILVA-BATISTA, INARA CAROLINA; DE JAGER, LINDE; DEPRÁ, MARIANA SCARAMUSSA; DOMINGOS-MELO, ARTHUR; DVORSKY, COURTNEY; AGOSTINI, KAYNA; FREITAS, LEANDRO; GAGLIANONE, MARIA CRISTINA; GALETTO, LEO; GILBERT, MIKE; GONZÁLEZ-RAMÍREZ, IXCHEL; GOROSTIAGUE, PABLO; GOYDER, DAVID; HACHUY-FILHO, LEANDRO; HEIDUK, ANNEMARIE; HOWARD, AARON; IONTA, GRETCHEN; ISLAS-HERNÁNDEZ, SOFIA C; JOHNSON, STEVEN D; JOUBERT, LIZE; KAISER-BUNBURY, CHRISTOPHER N; KEPHART, SUSAN; KIDYOO, AROONRAT; KOPTUR, SUZANNE; KOSCHNITZKE, CRISTIANA; LAMBORN, ELLEN; LIVSHULTZ, TATYANA; MACHADO, ISABEL CRISTINA; MARINO, SALVADOR; MEMA, LUMI; MOCHIZUKI, KO; MORELLATO, LEONOR PATRÍCIA CERDEIRA; MRISHA, CHEDIEL K; MUIRURI, EVALYNE W; NAKAH

ANNALS OF BOTANY

OXFORD UNIV PRESS

Lugar: Oxford; Año: 2018

0305-7364

? Background and Aims Large clades of angiosperms are often characterized by diverse interactions with pol - linators, but how these pollination systems are structured phylogenetically and biogeographically is still uncertain  for most families. Apocynaceae is a clade of  > 5300 species with a worldwide distribution. A database representing  > 10 % of species in the family was used to explore the diversity of pollinators and evolutionary shifts in pollination  systems across major clades and regions. ? Methods The  database  was  compiled  from  published  and  unpublished  reports.  Plants  were  categorized  into   broad pollination systems and then subdivided to include bimodal systems. These were mapped against the five  major  divisions  of  the  family,  and  against  the  smaller  clades.  Finally,  pollination  systems  were  mapped  onto  a   phylogenetic reconstruction that included those species for which sequence data are available, and transition rates  between pollination systems were calculated. ? Key  Results Most  Apocynaceae  are  insect  pollinated  with  few  records  of  bird  pollination.  Almost  three- quarters  of  species  are  pollinated  by  a  single  higher  taxon  (e.g.  flies  or  moths);  7  %  have  bimodal  pollination   systems,  whilst  the  remaining  approx.  20  %  are  insect  generalists.  The  less  phenotypically  specialized  flowers   of the Rauvolfioids are pollinated by a more restricted set of pollinators than are more complex flowers within  the  Apocynoids  +  Periplocoideae  +  Secamonoideae  +  Asclepiadoideae  (APSA)  clade.  Certain  combinations  of   bimodal pollination systems are more common than others. Some pollination systems are missing from particular  regions, whilst others are over-represented. ? Conclusions Within Apocynaceae, interactions with pollinators are highly structured both phylogenetically and  biogeographically. Variation in transition rates between pollination systems suggest constraints on their evolution,  whereas regional differences point to environmental effects such as filtering of certain pollinators from habitats.  This is the most extensive analysis of its type so far attempted and gives important insights into the diversity and  evolution of pollination systems in large clades.