Integrated Metabolomic and Transcriptomic Analyses Reveals Sugar Transport and Starch Accumulation in Two Specific Germplasms of Manihot esculenta Crantz
文献类型： 外文期刊
作者： Cai, Jie 1 ; Xue, Jingjing 1 ; Zhu, Wenli 1 ; Luo, Xiuqin 1 ; Lu, Xiaohua 2 ; Xue, Maofu 1 ; Wei, Zhuowen 1 ; Cai, Yuqi 2 ; Ou, Wenjun 1 ; Li, Kaimian 1 ; An, Feifei 1 ; Chen, Songbi 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Key Lab Minist Agr Germplasm Resources Conservat &, Haikou 571101, Peoples R China
2.Hainan Univ, Sch Life Sci, Haikou 570228, Peoples R China
关键词： cassava; SWEETs; sugar transport; starch accumulation; metabolomics; transcriptomics
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN：
年卷期： 2023 年 24 卷 8 期
页码：
收录情况： SCI
摘要： As a starchy and edible tropical plant, cassava (Manihot esculenta Crantz) has been widely used as an industrial raw material and a dietary source. However, the metabolomic and genetic differences in specific germplasms of cassava storage root were unclear. In this study, two specific germplasms, M. esculenta Crantz cv. sugar cassava GPMS0991L and M. esculenta Crantz cv. pink cassava BRA117315, were used as research materials. Results showed that sugar cassava GPMS0991L was rich in glucose and fructose, whereas pink cassava BRA117315 was rich in starch and sucrose. Metabolomic and transcriptomic analysis indicated that sucrose and starch metabolism had significantly changing metabolites enrichment and the highest degree of differential expression genes, respectively. Sugar transport in storage roots may contribute to the activities of sugar, which will eventually be exported to transporters (SWEETs), such as (MeSWEET1a, MeSWEET2b, MeSWEET4, MeSWEET5, MeSWEET10b, and MeSWEET17c), which transport hexose to plant cells. The expression level of genes involved in starch biosynthesis and metabolism were altered, which may result in starch accumulation. These results provide a theoretical basis for sugar transport and starch accumulation and may be useful in improving the quality of tuberous crops and increasing yield.
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