Spatial patterning of scent in petunia corolla is discriminated by bees and involves the ABCG1 transporter
| Autor: | Ekaterina Shor, Yuval Tabach, Alexander Vainstein, Yaarit Kitsberg, Oded Skaliter, Elad Sharon, Yael Arien, Elena Shklarman, Yuling Yue, Sharoni Shafir, Tania Masci |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Plant Science Carnation Flowers Spatial distribution 01 natural sciences Petunia 03 medical and health sciences Pollinator Botany Genetics Animals Argyranthemum ATP Binding Cassette Transporter Subfamily G Member 1 Plant Proteins Volatile Organic Compounds biology Epidermis (botany) Dianthus fungi Cell Biology Bees biology.organism_classification 030104 developmental biology Odorants Petal 010606 plant biology & botany |
| Zdroj: | The Plant journal : for cell and molecular biologyREFERENCES. 106(6) |
| ISSN: | 1365-313X |
| Popis: | Floral guides are patterned cues that direct the pollinator to the plant reproductive organs. The spatial distribution of showy visual and olfactory traits allows efficient plant-pollinator interactions. Data on the mechanisms underlying floral volatile patterns or their interactions with pollinators are lacking. Here we characterize the spatial emission patterns of volatiles from the corolla of the model plant Petunia × hybrida and reveal the ability of honeybees to distinguish these patterns. Along the adaxial epidermis, in correlation with cell density, the petal base adjacent to reproductive organs emitted significantly higher levels of volatiles than the distal petal rim. Volatile emission could also be differentiated between the two epidermal surfaces: emission from the adaxial side was significantly higher than that from the abaxial side. Similar emission patterns were also observed in other petunias, Dianthus caryophyllus (carnation) and Argyranthemum frutescens (Marguerite daisy). Analyses of transcripts involved in volatile production/emission revealed lower levels of the plasma-membrane transporter ABCG1 in the abaxial versus adaxial epidermis. Transient overexpression of ABCG1 enhanced emission from the abaxial epidermis to the level of the adaxial epidermis, suggesting its involvement in spatial emission patterns in the epidermal layers. Proboscis extension response experiments showed that differences in emission levels along the adaxial epidermis, that is, petal base versus rim, detected by GC-MS are also discernible by honeybees. |
| Databáze: | OpenAIRE |
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