The red flower wintersweet genome provides insights into the evolution of magnoliids and the molecular mechanism for tepal color development

2021 ◽  
Author(s):  
Zhiguo Shen ◽  
Wenying Li ◽  
Yanli Li ◽  
Meilan Liu ◽  
Heping Cao ◽  
...  
Keyword(s):  
Molecular Mechanism ◽  
Color Development

scholarly journals Transcriptomic Analysis of the Anthocyanin Biosynthetic Pathway Reveals the Molecular Mechanism Associated with Purple Color Formation in Dendrobium Nestor

Life ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 113
Author(s):  
Xueqiang Cui ◽  
Jieling Deng ◽  
Changyan Huang ◽  
Xuan Tang ◽  
Xianmin Li ◽  
...  
Keyword(s):  
Molecular Mechanism ◽  
Developmental Stages ◽  
Anthocyanin Biosynthesis ◽  
Transcriptome Profiling ◽  
Flower Color ◽  
Flower Bud ◽  
Color Formation ◽  
Color Development ◽  
Purple Coloration ◽  
Purple Color

Dendrobium nestor is a famous orchid species in the Orchidaceae family. There is a diversity of flower colorations in the Dendrobium species, but knowledge of the genes involved and molecular mechanism underlying the flower color formation in D. nestor is less studied. Therefore, we performed transcriptome profiling using Illumina sequencing to facilitate thorough studies of the purple color formation in petal samples collected at three developmental stages, namely—flower bud stage (F), half bloom stage (H), and full bloom stage (B) in D. nestor. In addition, we identified key genes and their biosynthetic pathways as well as the transcription factors (TFs) associated with purple flower color formation. We found that the phenylpropanoid–flavonoid–anthocyanin biosynthesis genes such as phenylalanine ammonia lyase, chalcone synthase, anthocyanidin synthase, and UDP-flavonoid glucosyl transferase, were largely up-regulated in the H and B samples as compared to the F samples. This upregulation might partly account for the accumulation of anthocyanins, which confer the purple coloration in these samples. We further identified several differentially expressed genes related to phytohormones such as auxin, ethylene, cytokinins, salicylic acid, brassinosteroid, and abscisic acid, as well as TFs such as MYB and bHLH, which might play important roles in color formation in D. nestor flower. Sturdy upregulation of anthocyanin biosynthetic structural genes might be a potential regulatory mechanism in purple color formation in D. nestor flowers. Several TFs were predicted to regulate the anthocyanin genes through a K-mean clustering analysis. Our study provides valuable resource for future studies to expand our understanding of flower color development mechanisms in D. nestor.

scholarly journals Analysis of yellow mutant rainbow trout transcriptomes at different developmental stages reveals dynamic regulation of skin pigmentation genes

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Shenji Wu ◽  
Jinqiang Huang ◽  
Yongjuan Li ◽  
Lu Zhao ◽  
Zhe Liu
Keyword(s):  
Rainbow Trout ◽  
Molecular Mechanism ◽  
Skin Color ◽  
Expression Patterns ◽  
Skin Pigmentation ◽  
Gene Expression Pattern ◽  
Mapk Signaling ◽  
Differentially Expressed ◽  
Nucleotide Polymorphisms ◽  
Color Development

AbstractYellow mutant rainbow trout (YR), an economically important aquaculture species, is popular among consumers due to its excellent meat quality and attractive appearance. Skin color is a key economic trait for YR, but little is known about the molecular mechanism of skin color development. In this study, YR skin transcriptomes were analyzed to explore temporal expression patterns of pigmentation-related genes in three different stages of skin color development. In total, 16,590, 16,682, and 5619 genes were differentially expressed between fish at 1 day post-hatching (YR1d) and YR45d, YR1d and YR90d, and YR45d and YR90d. Numerous differentially expressed genes (DEGs) associated with pigmentation were identified, and almost all of them involved in pteridine and carotenoid synthesis were significantly upregulated in YR45d and YR90d compared to YR1d, including GCH1, PTS, QDPR, CSFIR1, SLC2A11, SCARB1, DGAT2, PNPLA2, APOD, and BCO2. Interestingly, many DEGs enriched in melanin synthesis pathways were also significantly upregulated, including melanogenesis (MITF, MC1R, SLC45A2, OCA2, and GPR143), tyrosine metabolism (TYR, TYRP1, and DCT), and MAPK signaling (KITA) pathways. Using short time-series expression miner, we identified eight differential gene expression pattern profiles, and DEGs in profile 7 were associated with skin pigmentation. Protein–protein interaction network analysis showed that two modules were related to xanthophores and melanophores. In addition, 1,812,329 simple sequence repeats and 2,011,334 single-nucleotide polymorphisms were discovered. The results enhance our understanding of the molecular mechanism underlying skin pigmentation in YR, and could accelerate the molecular breeding of fish species with valuable skin color traits and will likely be highly informative for developing new therapeutic approaches to treat pigmentation disorders and melanoma.

Additional evidence for AQP1 vesicle trafficking as a molecular mechanism for ductal bile secretion

2001 ◽  
Vol 120 (5) ◽  
pp. A91-A91
Author(s):  
P TIETZ ◽  
P SPLINTER ◽  
M MCNIVEN ◽  
R HUEBERT ◽  
N LARUSSO
Keyword(s):  
Molecular Mechanism ◽  
Vesicle Trafficking ◽  
Bile Secretion

Hypoxia/Reoxygenation on human myometrial and decidual cells: A molecular mechanism involved in preterra labor

1998 ◽  
Vol 5 (1) ◽  
pp. 187A-187A
Author(s):  
J CARVAJAL ◽  
S KATO ◽  
J SAEZ ◽  
F LEIGHTON ◽  
G VALENZUELA ◽  
...  
Keyword(s):  
Molecular Mechanism ◽  
Decidual Cells ◽  
Hypoxia Reoxygenation

Molecular Mechanism of Apoptosis Induction by Resveratrol, a Natural Cancer Chemopreventive Agent

2008 ◽  
Vol 78 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Fan ◽  
Jiang ◽  
Zhang ◽  
Bai
Keyword(s):  
Cancer Treatment ◽  
Molecular Mechanism ◽  
Apoptosis Induction ◽  
Protective Agents ◽  
Chemopreventive Agent ◽  
Naturally Occurring ◽  
Apoptosis Pathways ◽  
Present Understanding

In efforts to identify naturally occurring compounds that act as protective agents, resveratrol, a phytoalexin existing in wine, has attracted much interest because of its diverse pharmacological characteristics. Considering that apoptosis induction is the most potent defense approach for cancer treatment, we have tried to summarize our present understanding of apoptosis induction by resveratrol based on the two major apoptosis pathways.

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