First record of orchid subfossil seeds – The abundant occurrence of Epipactis palustris (L.) Crantz and Dactylorhiza spp. seeds in early Holocene sediments from Central Europe

Gołaszewska, Ewa; Gadziszewska, Joanna; Latałowa, Małgorzata

doi:10.1016/j.revpalbo.2019.03.001

Cited by 4 publications

(3 citation statements)

References 52 publications

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“…While many aspects of the natural history and diversification of orchids are well understood, little is known about the evolution of their seeds, mainly because of their small size and incomplete fossil record (Gołaszewska et al 2019). However, the sclerotic seed coat occurs in some basal orchid groups (Dressler 1993) and seems to have evolved from an ancestor member related to Asparagales (Givnish et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Unravelling the enigma of seed dispersal in Vanilla

Pansarin

2021

Plant Biol J

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Vanilla bean is the second most expensive spice in the world. While widely cultivated for centuries due to its importance for industry and gastronomy, its dispersers are unknown.• In the present study, I investigated the system of seed dispersal of Neotropical vanillas based on experimental observations, the morpho-anatomy of fruits and seeds, and the effect of dormancy breakdown on seed germination.• My results show the central cavity of the fruit contains copious amounts of seed with sclerified coats that are consumed by birds. The combination of gradually opening dehiscent fruits and a well-developed mesocarp rich in raphide idioblasts reinforces the idea that seed dispersal in Vanilla is more adapted to non-chewing animals. The digestive acids of birds sclerify the hard seed coats, breaking dormancy and promoting germination at the beginning of the wet season, which is fundamental for seedling survival and for the establishment of plants in the early stages of development during the rainy season.• Zoochory in Vanilla is show for the first time. The chemical scarification of the seed coat is crucial for synchronizing the biological processes involved in seed germination. My evidence on endozoochory and the processes involved in seed germination of Neotropical vanillas provides new insights into understanding of the early evolution of seed dispersal in orchids.

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Section: Discussionmentioning

confidence: 99%

Unravelling the enigma of seed dispersal in Vanilla

Pansarin

2021

Plant Biol J

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“…The particularly rich sub-fossil assemblages have revealed a number of plant and animal taxa which are rarely identified or have been never yet recorded in palaeoecological materials. In an earlier paper we reported on the first record of sub-fossil Orchidaceae seeds occurring abundantly in the W/1 core (Gołaszewska et al 2019).…”

Section: Results and Conclusionmentioning

confidence: 99%

Palaeobiodiversity of a floodplain lake sediments (N Poland) primary and secondary factors shaping sub-fossil assemblages

Janik

Gadziszewska²,

Niska

et al. 2020

LFWB

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“…In particular, because of their extremely minute size, the orchid seeds lack a definitive fossil record (Gołaszewska et al. 2019). Therefore, the interaction described here provides some clues regarding the animals that may have participated in the seed dispersal of ancestral clades of orchids.…”

Section: Discussionmentioning

confidence: 99%

A novel seed dispersal mode ofApostasia nipponicacould provide some clues to the early evolution of the seed dispersal system in Orchidaceae

Suetsugu

2020

Evolution Letters

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Despite being one of the most diverse families, scant attention has been paid to the seed dispersal system in Orchidaceae, owing to the widely accepted notion that wind dispersal is the dominant strategy. However, the indehiscent fruits, with seeds immersed in fleshy tissue, evoke the possibility of endozoochory in Apostasioideae, the earliest diverging lineage of orchids. In the present study, I investigated the seed dispersal system of Apostasia nipponica by direct observation, time-lapse photography, and investigation of the viability of seeds passing through the digestive tract of orthopterans. This study revealed a previously undocumented seed dispersal system in A. nipponica, in which the cricket, Eulandrevus ivani, and the camel cricket, Diestrammena yakumontana, consume the fruit and defecate viable seeds. Orthopterans are rarely considered seed dispersers, but the gross fruit morphology and pigmentation patterns of some Apostasia species parallel those seen in A. nipponica, suggesting that similar seed dispersal systems could be widespread among Apostasia species. Whether seed dispersal by orthopteran frugivores is common in Apostasioideae warrants further investigation.

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First record of orchid subfossil seeds – The abundant occurrence of Epipactis palustris (L.) Crantz and Dactylorhiza spp. seeds in early Holocene sediments from Central Europe

Cited by 4 publications

References 52 publications

Unravelling the enigma of seed dispersal in Vanilla

Unravelling the enigma of seed dispersal in Vanilla

Palaeobiodiversity of a floodplain lake sediments (N Poland) primary and secondary factors shaping sub-fossil assemblages

A novel seed dispersal mode ofApostasia nipponicacould provide some clues to the early evolution of the seed dispersal system in Orchidaceae

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