Dataset Information

Data on correlation among LAI, T/R, anthocyanin and starch content in purple fleshed sweetpotato during different growth stages.

ABSTRACT: Increasing demands for bio-products such as starch and anthocyanin stimulate researches towards purple-fleshed sweetpotato. Therefore, the aim of this complementary work is to identify the relationship between leaf area index, T/R value, starch and anthocyanin content in purple sweetpotato cultivar (cv "Xz3" from China) during the different growth stages. The traits were investigated every 15 days starting from 60 to 135 days after transplanting. The current data considered as a complementary for the main work "Quantifying cultivation technique and growth dynamics of purple-fleshed sweetpotato (Ipomoea batatas L.) in China" (Tang et al., 2018) [1].

SUBMITTER: Tang W

PROVIDER: S-EPMC6187010 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Data on correlation among LAI, T/R, anthocyanin and starch content in purple fleshed sweetpotato during different growth stages.

Tang Wei W Arisha Mohamed M Zhang Yungang Y Kou Meng M Yan Hui H Liu Yaju Y Wang Xin X Ma Daifu D Li Qiang Q

Data in brief 20181003

Increasing demands for bio-products such as starch and anthocyanin stimulate researches towards purple-fleshed sweetpotato. Therefore, the aim of this complementary work is to identify the relationship between leaf area index, T/R value, starch and anthocyanin content in purple sweetpotato cultivar (cv "Xz3" from China) during the different growth stages. The traits were investigated every 15 days starting from 60 to 135 days after transplanting. The current data considered as a co ...[more]

PMID: 30338280

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Project description:In various plant species, many transcription factors (TFs), such as MYB, bHLH, and WD40, have been identified as regulators of anthocyanin biosynthesis in underground organs. However, the regulatory elements of anthocyanin biosynthesis in the tuberous roots of sweet potato have not been elucidated yet. Here, we selected the purple-fleshed sweet potato cultivar "Zhezi1" (ZZ P ) and its spontaneous yellow-fleshed mutant "Xinli" (XL Y ) to investigate the regulatory mechanism of the anthocyanin biosynthesis in the tuberous roots of sweet potato. By analyzing the IbMYB1 genotype in ZZ P and XL Y , we found that the IbMYB1-2, a MYB TF involved in anthocyanin biosynthesis, was missing in the XL Y genome, which might lead to an extreme decrease in anthocyanins in XL Y . A comparative transcriptome analysis of ZZ P and XL Y was conducted to find the TFs involved in anthocyanin biosynthesis in ZZ P and XL Y . The anthocyanin structural genes were significantly enriched among the differentially expressed genes. Moreover, one MYB activator (IbMYB1), one bHLH (IbbHLH2), three WRKY activator candidates (IbWRKY21, IbWRKY24, and IbWRKY44), and two MYB repressors (IbMYB27 and IbMYBx-ZZ) were highly expressed in ZZ P accompanied with anthocyanin structural genes. We also tested the expression of these TFs in six purple- and two orange-fleshed sweet potato cultivars. Interestingly, most of these TFs were significantly positively correlated with anthocyanin contents in these cultivars. The function of the anthocyanin biosynthesis repression of IbMYB27 and IbMYBx-ZZ was verified through transient co-transformation with IbMYB1 into tobacco leaves. Further functional verification of the above TFs was conducted by Y2H, BiFC, and dual-luciferase assays. These tests showed that the MYB-bHLH-WD40/MYB-bHLH-WD40-WRKY complex activated the promoter of anthocyanin structural gene IbDFR and promoters for IbWRKY44, IbMYB27, and IbMYBx-ZZ, indicating reinforcement and feedback regulation to maintain the level of anthocyanin accumulation in the tuberous roots of purple-fleshed sweet potato. These results may provide new insights into the regulatory mechanism of anthocyanin biosynthesis and accumulation in underground organs of sweet potatoes.

Dataset Information

Data on correlation among LAI, T/R, anthocyanin and starch content in purple fleshed sweetpotato during different growth stages.

Publications

Data on correlation among LAI, <i>T</i>/<i>R</i>, anthocyanin and starch content in purple fleshed sweetpotato during different growth stages.

Similar Datasets

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