Chinese Journal OF Rice Science >
Overexpression of Sucrose Transporter OsSUT1 Affects Rice Morphology and Physiology
Received date: 2018-02-05
Revised date: 2018-06-11
Online published: 2018-11-10
【Objective】Phosphorus exerts an important influence on synthesis of sucrose and starch in plant cell. There are still many aspects need to be clarified about their relationship.【Method】In this study, OsSUT1-overexpressed material was obtained by using transgenic technology. Effects of overexpression of this gene on sucrose and phosphorus contents, as well as plant morphology and physiology were investigated under hydroponics and pot experiment conditions. 【Result】Expression analysis at the transcription level indicated that OsSUT1 was induced by phosphorus deficiency in rice roots. Hydroponics experiment showed that compared with the wild-type plant, over-expression of OsSUT1 in the transgenic plant under normal phosphorus supply resulted in a decrease in sucrose content in shoot and an increase in phosphorus content in both root and shoot. However, there was no significant difference in sucrose and phosphorus contents between the OsSUT1-overexpressed and control plants under phosphorus deficiency conditions. Pot experiment showed that overexpression of OsSUT1 increased the number of tillers, effective tillers, and phosphorus content in rice, and the seed size was also larger than that of the wild type. 【Conclusion】These results indicate that OsSUT1 influences sucrose and phosphorus contents and growth and development of the transgenic rice.
Key words： rice; growth and development; OsSUT1; sugar; phosphorus
Bing FENG, Yafei SUN, Hao AI, Xiuli LIU, Jing YANG, Lu LIU, Feiyan GAO, Guohua XU, Shubin SUN . Overexpression of Sucrose Transporter OsSUT1 Affects Rice Morphology and Physiology[J]. Chinese Journal OF Rice Science, 2018 , 32(6) : 549 -556 . DOI: 10.16819/j.1001-7216.2018.8015
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