Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 64, Issue -, Pages -Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2021.102145
Keywords
Phloem unloading; Fruit development; Plasmodesmata; Symplasmic; transport
Categories
Funding
- Leverhulme Trust [RPG2016-136]
- UKRI Future Leaders Fellowship [MR/T04263X/1]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [83086]
- Philip Leverhulme Prize [PLP-2017-079]
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Fruit consumption is essential for a balanced diet, but the challenge of meeting the increasing demands of a growing population is driving strategies to improve fruit production and nutritional quality. Targeted modifications to plasmodesmata have the potential to enhance fruit development, but understanding of the regulation mechanisms in this context remains limited.
Fruit consumption is fundamental to a balanced diet. The contemporary challenge of maintaining a steady food supply to meet the demands of a growing population is driving the development of strategies to improve the production and nutritional quality of fruit. Plasmodesmata, the structures that mediate symplasmic transport between plant cells, play an important role in phloem unloading and distribution of sugars and signalling molecules into developing organs. Targeted modifications to the structures and functioning of plasmodesmata have the potential to improve fruit development; however, knowledge on the mechanisms underpinning plasmodesmata regulation in this context is scarce. In this review, we have compiled current knowledge on plasmodesmata and their structural characterisation during the development of fruit organs. We discuss key questions on phloem unloading, including the pathway shift from symplasmic to apoplastic that takes place during the onset of ripening as potential targets for improving fruit quality.
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