Article
Biochemistry & Molecular Biology
Luhong Leng, Xiaoni Zhang, Weichao Liu, Zhiqiang Wu
Summary: Carnations are popular ornamental flowers with varied flower colors, which are mainly due to the accumulation of flavonoid compounds. MYB and bHLH transcription factors regulate the expression of anthocyanin biosynthetic genes. This study identified 106 MYB and 125 bHLH genes in the carnation genome and revealed key genes (DcaMYB13 and DcabHLH125) responsible for the formation of red petals in carnations. The findings provide valuable information for further studies on the regulation of anthocyanin biosynthesis in carnations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Wenqian Hou, Ping Yan, Tianye Shi, Pengzhou Lu, Weiwei Zhao, Huimin Yang, Liqian Zeng, Jun Yang, Zongyun Li, Weijuan Fan, Lei Zhang
Summary: The storage roots of purple-fleshed sweetpotato are nutrient-rich foods with health effects due to their high anthocyanin content. This study identified IbMYB1-2 as a key transcriptional activator in sweetpotato that promotes anthocyanin biosynthesis. Furthermore, it was discovered that IbbHLH42 regulates anthocyanin biosynthesis through a positive feedback loop.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Kun Yang, Yibin Hou, Mei Wu, Qiuyu Pan, Yilong Xie, Yusen Zhang, Fenghang Sun, Zhizhong Zhang, Jinghua Wu
Summary: This study found that the MYB and bHLH transcription factors in Dendrobium officinale play important roles in the synthesis and accumulation of anthocyanin. Their expression levels were positively correlated with the anthocyanin content in D. officinale varieties with different colors. DoMYB5 and DobHLH24 may enhance the regulatory effect by forming heterodimers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Lili Xiang, Xiaofen Liu, Yanna Shi, Yajing Li, Weidong Li, Fang Li, Kunsong Chen
Summary: The research found that CmbHLH2 and CmbHLH2.1 play important roles in flower color alteration in 'Jimba' chrysanthemums, with the former playing a predominant role in the process.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Qi Wei, Jie Li, Shuai Yang, Wenzhong Wang, Fanxiang Min, Mei Guo, Shu Zhang, Xuezhi Dong, Linshuang Hu, Zhugang Li, Xiaodan Wang
Summary: Common scab is a significant potato disease caused by Streptomyces spp. This study identified a strain of Streptomyces from scabby potatoes in Heilongjiang Province, China, which has the ability to cause typical scab lesions and is highly similar to a strain from Korea. Additionally, this strain was detected in scabby potato samples collected in Heilongjiang Province.
Article
Plant Sciences
Shuhui Zhang, Hui Wang, Tong Wang, Wenjun Liu, Jing Zhang, Hongcheng Fang, Zongying Zhang, Futian Peng, Xuesen Chen, Nan Wang
Summary: The R2R3-MYB transcription factor MdMYB305 is positively correlated with fruit sugar content but negatively correlated with anthocyanin content in red-fleshed apples. It promotes sugar accumulation and inhibits anthocyanin synthesis through binding with sugar-related and anthocyanin-related genes. MdMYB305 competes with MdMYB10 for the MdbHLH33 binding site to balance sugar and anthocyanin accumulation in fruits.
Article
Biochemistry & Molecular Biology
Rui Wang, Chanjuan Mao, Feng Ming
Summary: In this study, a novel R2R3-MYB transcription factor, PeMYB4L, was identified to promote anthocyanin accumulation in Phalaenopsis spp. flowers. It was found that PeMYB4L can directly regulate the expression of the Phalaenopsis spp. chalcone synthase gene through MYBST1 binding site. In addition, the MYB-bHLH complex formed by PeMYC4 and PeMYB4L attenuated the expression of the Phalaenopsis spp. chalcone synthase gene and weakened anthocyanin production, revealing a novel regulatory model.
Article
Biochemistry & Molecular Biology
Akifumi Azuma, Shozo Kobayashi
Summary: The difference in skin and flesh color between the black-skinned and red-fleshed grape varieties 'Brazil' and 'Benitaka' cannot be explained by genomic alteration at the VvMYBA loci. The decrease in DNA methylation levels in the 3’ LTR of the VvMYBA1BEN allele in 'Brazil' leads to increased expression levels of VvMYBA1 and anthocyanin accumulation in the skin and flesh. Additionally, the skin and flesh colors are inherited together and vary depending on the presence or absence of the VvMYBA1BEN allele.
Article
Plant Sciences
Jieyu Qian, Lingli Jiang, Hongsheng Qing, Jiahong Chen, Ziyun Wan, Menghan Xu, Jianxin Fu, Chao Zhang
Summary: The petal color in Zinnia elegans is determined by the accumulation of anthocyanins, especially cyanidins. The transcription factor ZeMYB9 from subgroup 6 was identified as a positive regulator of anthocyanin accumulation, and it can activate the expression of ZeF3'H, enhancing cyanidin synthesis and regulating petal color in Z. elegans. ZeMYB9 was also found to interact with the bHLH transcription factor ZeGL3, further promoting the promoter activity of ZeF3'H and inducing anthocyanin accumulation in tobacco leaves.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Chenlu Zhou, Zhanghui Zeng, Jingqi Suo, Xipu Li, Hongwu Bian, Junhui Wang, Muyuan Zhu, Ning Han
Summary: Barley has abundant accessions rich in anthocyanin, making it an ideal model for studying the regulatory mechanism of anthocyanin biosynthesis. Two transcription factors, Ant1 and Ant2, were characterized in this study, with their co-expression promoting anthocyanin accumulation in transgenic barley grains. Manipulating the expression of Ant1 can lead to the production of anthocyanin-enriched barley grains.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Review
Plant Sciences
Simon Mitreiter, Tamara Gigolashvili
Summary: Glucosinolates are secondary defense metabolites produced by plants, and their synthesis is regulated by complex mechanisms involving transcription factors, plant hormones, and environmental signals. Understanding the regulation of glucosinolate biosynthesis is crucial for ecological relevance in plants and its interactions with auxin and sulfur metabolism.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Huiling Zhang, Yanan Zhao, Xijuan Zhao, Zhonghua Zhang, Ju Liu, Minghui Shi, Botao Song
Summary: The OMT30376 gene is involved in the transformation of anthocyanins in potato tubers, as revealed by transcriptome and metabolome analyses.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Jiao Wang, Ke Cao, Lirong Wang, Wenxuan Dong, Xiao Zhang, Weisheng Liu
Summary: This study reveals the molecular mechanisms by which glucose, sucrose, sorbitol, and fructose regulate anthocyanin accumulation in peach fruit by upregulating the structural genes PpDFR and PpUFGT. Transcription factors PpMYB6 and PpMYB44-like, along with PpbHLH35, are found to play important roles in this process.
Article
Biochemistry & Molecular Biology
Yongyan Zhang, Dingquan Huang, Bin Wang, Xuelian Yang, Huan Wu, Pengyan Qu, Li Yan, Tao Li, Chunzhen Cheng, Dongliang Qiu
Summary: In this study, fifteen candidate anthocyanin biosynthesis related MYB (ABRM) proteins were identified from highbush blueberry, including twelve R2R3-MYBs and three 1R-MYBs. The subcellular localization prediction results showed that most of the blueberry ABRMs were nucleus-localized, except for VcRVE8. The gene structure analysis revealed a wide range of exon numbers in the blueberry ABRM genes. The promoters of the blueberry ABRM genes contained various responsive elements related to light, phytohormones, abiotic stress, and plant growth and development. Additionally, the expression analysis showed that VcMYB, VcMYB6, VcMYB23, VcMYBL2, and VcPH4 were abundantly expressed in blueberry fruits, with VcMYB being the highest in red, purple, and blue fruits. The study provides valuable information for future research on anthocyanin biosynthesis related MYBs in blueberry.
CURRENT ISSUES IN MOLECULAR BIOLOGY
(2023)
Article
Plant Sciences
Yumei Li, Jun Liang, Xiangzhi Zeng, Han Guo, Youwei Luo, Philip Kear, Shouming Zhang, Guangtao Zhu
Summary: The MYB transcription factor family in plants plays a crucial role in regulating plant growth, development, and stress response, including anthocyanin biosynthesis. This study identified 217 MYB genes in the potato genome, with 70 differentially expressed genes discovered through transcriptomic analysis. The findings provide insight into the regulatory mechanisms of MYB in anthocyanin biosynthesis and uncover potential interactive regulators in this pathway.
HORTICULTURAL PLANT JOURNAL
(2021)