scholarly journals The Simultaneous Repression of CCR and CAD, Two Enzymes of the Lignin Biosynthetic Pathway, Results in Sterility and Dwarfism in Arabidopsis thaliana

2011 ◽  
Vol 4 (1) ◽  
pp. 70-82 ◽  
Author(s):  
Johanne Thévenin ◽  
Brigitte Pollet ◽  
Bruno Letarnec ◽  
Luc Saulnier ◽  
Lionel Gissot ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Biosynthetic Pathway ◽  
Lignin Biosynthetic Pathway

Caffeoyl Shikimate Esterase (CSE) Is an Enzyme in the Lignin Biosynthetic Pathway in Arabidopsis

Science ◽  
2013 ◽  
Vol 341 (6150) ◽  
pp. 1103-1106 ◽  
Author(s):  
Ruben Vanholme ◽  
Igor Cesarino ◽  
Katarzyna Rataj ◽  
Yuguo Xiao ◽  
Lisa Sundin ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Cell Walls ◽  
Metabolite Profiling ◽  
Biosynthetic Pathway ◽  
Wild Type ◽  
Secondary Cell Walls ◽  
Phenolic Metabolite ◽  
In The Wild ◽  
Lignin Biosynthetic Pathway

Lignin is a major component of plant secondary cell walls. Here we describe caffeoyl shikimate esterase (CSE) as an enzyme central to the lignin biosynthetic pathway. Arabidopsis thaliana cse mutants deposit less lignin than do wild-type plants, and the remaining lignin is enriched in p-hydroxyphenyl units. Phenolic metabolite profiling identified accumulation of the lignin pathway intermediate caffeoyl shikimate in cse mutants as compared to caffeoyl shikimate levels in the wild type, suggesting caffeoyl shikimate as a substrate for CSE. Accordingly, recombinant CSE hydrolyzed caffeoyl shikimate into caffeate. Associated with the changes in lignin, the conversion of cellulose to glucose in cse mutants increased up to fourfold as compared to that in the wild type upon saccharification without pretreatment. Collectively, these data necessitate the revision of currently accepted models of the lignin biosynthetic pathway.

A Comprehensive Gene Inventory for Glucosinolate Biosynthetic Pathway in Arabidopsis thaliana

2020 ◽  
Vol 68 (28) ◽  
pp. 7281-7297
Author(s):  
Sarahani Harun ◽  
Muhammad-Redha Abdullah-Zawawi ◽  
Hoe-Han Goh ◽  
Zeti-Azura Mohamed-Hussein
Keyword(s):  
Arabidopsis Thaliana ◽  
Biosynthetic Pathway

Inactivation of genes, encoding tocopherol biosynthetic pathway enzymes, results in oxidative stress in outdoor grown Arabidopsis thaliana

2009 ◽  
Vol 47 (5) ◽  
pp. 384-390 ◽  
Author(s):  
Nadia M. Semchuk ◽  
Oleh V. Lushchak ◽  
Jon Falk ◽  
Karin Krupinska ◽  
Volodymyr I. Lushchak
Keyword(s):  
Oxidative Stress ◽  
Arabidopsis Thaliana ◽  
Biosynthetic Pathway ◽  
Genes Encoding

scholarly journals Nanoselenium Transformation And Inhibition of Cadmium Accumulation By Regulating The Lignin Biosynthetic Pathway And Plant Hormone Signal Transduction In Pepper Plants

2021 ◽  
Author(s):  
Dong Li ◽  
Chunran Zhou ◽  
Jinling Ma ◽  
Yangliu Wu ◽  
Lu Kang ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Cell Walls ◽  
Biosynthetic Pathway ◽  
Lignin Biosynthesis ◽  
Cadmium Accumulation ◽  
Protective Mechanism ◽  
Plant Signal Transduction ◽  
Lignin Biosynthetic Pathway ◽  
Pepper Plants

Abstract Selenium (Se) can promote the growth and resistance of agricultural crops as fertilizers, while the role of nano-selenium (nano-Se) against Cd remains unclear in pepper plants (Capsicum annuum L.). Biofortification with nano-Se observably restored Cd stress by decreasing the level of Cd in plant tissues and boosting the accumulation in biomass. The Se compounds transformed by nano-Se were primarily in the form of SeMet and MeSeCys in pepper tissues. Differential metabolites and the genes of plant signal transduction and lignin biosynthesis were measured by employing transcriptomics and determining target metabolites. The number of lignin-related genes (PAL, CAD, 4CL, and COMT) and contents of metabolites (sinapyl alcohol, phenylalanine, p-coumaryl alcohol, caffeyl alcohol, and coniferaldehyde) were remarkably enhanced by treatment with Cd1Se0.2, thus, maintaining the integrity of cell walls in the roots. It also enhanced signal transduction by plant hormones and responsive resistance by inducing the biosynthesis of genes (BZR1, LOX3, and NCDE1) and metabolites (brassinolide, abscisic acid, and jasmonic acid) in the roots and leaves. In general, this study can enable a better understanding of the protective mechanism of nano-Se in improving the capacity of plants to resist environmental stress.

Molecular characterization of EgMYB1, a putative transcriptional repressor of the lignin biosynthetic pathway

Plant Science ◽  
2007 ◽  
Vol 173 (5) ◽  
pp. 542-549 ◽  
Author(s):  
Sylvain Legay ◽  
Eric Lacombe ◽  
Monica Goicoechea ◽  
Christian Brière ◽  
Armand Séguin ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Biosynthetic Pathway ◽  
Transcriptional Repressor ◽  
Lignin Biosynthetic Pathway

scholarly journals Phylogenetic Occurrence of the Phenylpropanoid Pathway and Lignin Biosynthesis in Plants

2021 ◽  
Vol 12 ◽  
Author(s):  
Tao Yao ◽  
Kai Feng ◽  
Meng Xie ◽  
Jaime Barros ◽  
Timothy J. Tschaplinski ◽  
...  
Keyword(s):  
Biosynthetic Pathway ◽  
Shikimate Pathway ◽  
Lignin Biosynthesis ◽  
Phenylpropanoid Pathway ◽  
Land Plant ◽  
Bioenergy Crops ◽  
Plant Colonization ◽  
Epsp Synthase ◽  
Syringyl Lignin ◽  
Lignin Biosynthetic Pathway

The phenylpropanoid pathway serves as a rich source of metabolites in plants and provides precursors for lignin biosynthesis. Lignin first appeared in tracheophytes and has been hypothesized to have played pivotal roles in land plant colonization. In this review, we summarize recent progress in defining the lignin biosynthetic pathway in lycophytes, monilophytes, gymnosperms, and angiosperms. In particular, we review the key structural genes involved in p-hydroxyphenyl-, guaiacyl-, and syringyl-lignin biosynthesis across plant taxa and consider and integrate new insights on major transcription factors, such as NACs and MYBs. We also review insight regarding a new transcriptional regulator, 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase, canonically identified as a key enzyme in the shikimate pathway. We use several case studies, including EPSP synthase, to illustrate the evolution processes of gene duplication and neo-functionalization in lignin biosynthesis. This review provides new insights into the genetic engineering of the lignin biosynthetic pathway to overcome biomass recalcitrance in bioenergy crops.

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