Gene expression profiling reveals a novel role of sucrose regulated by light on adventitious root formation in lotus

Lotus is an aquatic horticultural crop, and widely cultivated in most regions of China. Lotus is often used as a kind of an important off-season vegetable with various nutrients. Principle root of lotus is degenerated, and the role of adventitious roots (ARs) is irreplaceable for plant growth. We found that no ARs could be formed under darkness condition, and high light intensity significantly promote the development of root primordium. Therefore, four libraries with three light intensities were constructed to monitor metabolism changes during ARs formation, especially in IAA and sugar metabolism.