Abstract
Seed dispersal is essential for the success of plants, allowing them to find advantageous areas to inhabit while avoiding inbreeding. Although predominantly anemochoric, grasses (Poaceae) have evolved other ways to disperse their diaspores, such as zoochory and also ballistochory (forcible dispersal), which is considered rare within this family. To date, ballistochory in grasses is only known for the sister genera Raddia and Sucrea, Neotropical herbaceous bamboos (tribe Olyreae). In this study, this dispersal syndrome is confirmed for Reitzia, a monospecific herbaceous bamboo genus and member of the Piresia clade, which is restricted to the Atlantic forest in southeastern and southern Brazil. We hypothesize that the pedicel of the pistillate spikelet, more than the glumes, may be responsible for the ballistic movement. We also provide an updated conservation assessment and a distribution map for the genus.
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Acknowledgements
We are grateful to the Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil (CNPq—grants 426334/2018-3, 441760/2020-1) and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG—grants APQ-01222-21, APQ-03365-21) for financial support. FMF also thanks Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brazil (CAPES) (PNPD), and RPO (PQ-1C) and CADW (PQ-2) thank CNPq for the fellowships received.
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FMF reviewed herbaria, performed the experiment, wrote the manuscript, and prepared the illustrations and maps. RPO reviewed herbaria and reviewed the manuscript. CADW, CS, and LGC contributed to the interpretation during the writing of the manuscript and reviewed it.
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Ferreira, F.M., Silva, C., Oliveira, R.P. et al. Ballistochory in the herbaceous bamboo genus Reitzia (Poaceae, Bambusoideae, Olyreae): the second report of this dispersal syndrome in grasses. Braz. J. Bot 46, 1079–1087 (2023). https://doi.org/10.1007/s40415-023-00944-2
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DOI: https://doi.org/10.1007/s40415-023-00944-2