Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/ijms222011231
Keywords
Litchi chinensis; sugar; transport; metabolism; abscission; seed development
Funding
- National Key Research and Development Program [2019YFD1000900]
- National Natural Science Fund of China [32172528]
- China Litchi and Longan Industry Technology Research System [CARS-32-05]
- Science and Technology Planning Project of Guangzhou [202103000057]
- Science and Technology Talents and Platform Plan of Yunnan Province [202104AC100001-B04]
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This study reviews the sugar transport, metabolism, and signaling mechanisms during fruit development in litchi. It covers sugar transport and accumulation, quebrachitol synthesis, sugar metabolism, and the relationship between sugar signaling and seed development, fruit abscission. Future research directions aim to enhance fruit yield and quality through optimizing sugar metabolism and signaling.
Litchi chinensis Sonn. is an important evergreen fruit crop cultivated in the tropical and subtropical regions. The edible portion of litchi fruit is the aril, which contains a high concentration of sucrose, glucose, and fructose. In this study, we review various aspects of sugar transport, metabolism, and signaling during fruit development in litchi. We begin by detailing the sugar transport and accumulation during aril development, and the biosynthesis of quebrachitol as a transportable photosynthate is discussed. We then document sugar metabolism in litchi fruit. We focus on the links between sugar signaling and seed development as well as fruit abscission. Finally, we outline future directions for research on sugar metabolism and signaling to improve fruit yield and quality.
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