Author
Qiao Zhao
Bio: Qiao Zhao is an academic researcher from Tsinghua University. The author has contributed to research in topics: Secondary cell wall & Nonsynonymous substitution. The author has an hindex of 2, co-authored 3 publications receiving 90 citations.
Papers
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TL;DR: An overview of lignin composition, the biosynthesis pathway and its regulation is provided, to improve biomass degradability for the production of second-generation biofuels.
145 citations
TL;DR: This work highlights how the recent identification of the membrane steroid binding proteins (MSBPs) as the structural component of the complex have revealed the molecular mechanism underlying the monolignol metabolon formation.
4 citations
TL;DR: A nonsynonymous point mutation in a bHLH transcription factor prevents transcription of the two P450 genes in the amygdalin biosynthetic pathway, resulting in the sweet kernel trait.
1 citations
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TL;DR: Different preparation methods for lignin-based nanomaterials with antioxidant UV-absorbing and antimicrobial properties that can be used as reinforcing agents in nanocomposites, in drug delivery and gene delivery vehicles for biomedical applications are described.
456 citations
TL;DR: Recent progress on elucidating the contribution of phenylpropanoid metabolism to the coordination of plant development and plant-environment interaction, and metabolic flux redirection among diverse metabolic routes are summarized.
Abstract: Phenylpropanoid metabolism is one of the most important metabolisms in plants, yielding more than 8,000 metabolites contributing to plant development and plant-environment interplay. Phenylpropanoid metabolism materialized during the evolution of early freshwater algae that were initiating terrestrialization and land plants have evolved multiple branches of this pathway, which give rise to metabolites including lignin, flavonoids, lignans, phenylpropanoid esters, hydroxycinnamic acid amides, and sporopollenin. Recent studies have revealed that many factors participate in the regulation of phenylpropanoid metabolism, and modulate phenylpropanoid homeostasis when plants undergo successive developmental processes and are subjected to stressful environments. In this review, we summarize recent progress on elucidating the contribution of phenylpropanoid metabolism to the coordination of plant development and plant-environment interaction, and metabolic flux redirection among diverse metabolic routes. In addition, our review focuses on the regulation of phenylpropanoid metabolism at the transcriptional, post-transcriptional, post-translational, and epigenetic levels, and in response to phytohormones and biotic and abiotic stresses.
345 citations
TL;DR: This review puts SCW biosynthesis in a cellular context, with the aim of integrating molecular biology and biochemistry with plant cell biology, and reflects the fact that protoxylem tracheary elements have proven to be the most amenable experimental system in which to study the cell biology of SCWs.
160 citations
TL;DR: How newly fixed carbon, in the form of UDP-glucose and other nucleotide sugars, contributes to the synthesis of cell wall polysaccharides, and how cell wall synthesis is influenced by the carbon status of the plant are discussed, with a focus on the model species Arabidopsis.
134 citations
TL;DR: The data showed that these MYB proteins directly activated transcriptional repressors that specifically inhibit flavonoid biosynthesis, which competes with lignin biosynthesis for Phe precursors, and provide important insights into the molecular framework for the lignIn biosynthesis pathway.
Abstract: Lignin is a phenylpropanoid-derived polymer that functions as a major component of cell walls in plant vascular tissues. Biosynthesis of the aromatic amino acid Phe provides precursors for many secondary metabolites, including lignins and flavonoids. Here, we discovered that MYB transcription factors MYB20, MYB42, MYB43, and MYB85 are transcriptional regulators that directly activate lignin biosynthesis genes and Phe biosynthesis genes during secondary wall formation in Arabidopsis (Arabidopsis thaliana). Disruption of MYB20, MYB42, MYB43, and MYB85 resulted in growth development defects and substantial reductions in lignin biosynthesis. In addition, our data showed that these MYB proteins directly activated transcriptional repressors that specifically inhibit flavonoid biosynthesis, which competes with lignin biosynthesis for Phe precursors. Together, our results provide important insights into the molecular framework for the lignin biosynthesis pathway.
134 citations