Effects of Sucrose on Seedling Growth and Development and SnRK1 Activity in Prunus persica
Received date: 2019-02-22
Accepted date: 2019-05-17
Online published: 2019-05-23
This study analyzed the SnRK1 activity and seedling growth and development in response to different concentrations and durations of exogenous sucrose in peach (Prunus persica), thus providing theoretical basis and technical support for fruit production. The data showed that 5% sucrose treatment greatly enhanced the SnRK1 activity, which was continuously increased within a certain period of treatment. Compared with water and mannitol controls, 5% sucrose treatment significantly increased the contents of soluble sugar, starch, and chlorophyll, the biomass of aboveground and underground, and the net photosynthetic rate. Examination of root configuration showed that 5% sucrose significantly increased root surface area, root volume, and number of lateral roots, and promoted root thickening and elongation. qRT-PCR analysis showed that exogenous sucrose promoted auxin synthesis and transport in roots. In conclusion, application of certain concentration of sucrose promotes SnRK1 activity, carbon metabolism, and plant growth and development, increases root auxin synthesis and transport and affects root configuration in peach.
Key words： peach; SnRK1; sucrose; auxin; root configuration
Shuhui Zhang,Hong Wang,Wenru Wang,Xuelian Wu,Yuansong Xiao,Futian Peng . Effects of Sucrose on Seedling Growth and Development and SnRK1 Activity in Prunus persica[J]. Chinese Bulletin of Botany, 2019 , 54(6) : 744 -752 . DOI: 10.11983/CBB19032
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