Lignins: Biosynthesis and Biological Functions in Plants

Liu, Qingquan; Luo, Le; Zheng, Luqing

doi:10.3390/ijms19020335

Cited by 875 publications

(609 citation statements)

References 137 publications

(154 reference statements)

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“…GO analysis showed that these DEGs were involved in different biological processes (Figure 8c). The four most significantly enriched GO terms were related to responses to biotic and abiotic stimulus, oxidation-reduction process, and growth and development, among which four genes were involved in lignin biosynthesis, which has been proposed to play an important role in resistance to microbes (Liu, et al, 2018a). And genes related to root hair remodelling, such as GSTF14 (GLUTATHIONE S-TRANSFERASE), PER8 (PEROXIDASE 8), PRP1 (PROLINE-RICH PROTEIN 1), and Immunoblot analysis was performed using anti-GFP antibody, and cFBPase (cytosolic fructose-1,6-bisphosphatase) was used as a loading control.…”

Section: Global Analysis Of Arabidopsis Gene Expression During Earlmentioning

confidence: 99%

Endophytic fungus Falciphora oryzae promotes lateral root growth by producing indole derivatives after sensing plant signals

Sun

Wang

et al. 2019

Plant Cell & Environment

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The endophytic fungus Falciphora oryzae was initially isolated from wild rice (Oryza granulata) and colonizes many crop species and promotes plant growth. However, the molecular mechanisms underlying F. oryzae‐mediated growth promotion are still unknown. We found that F. oryzae was able to colonize Arabidopsis thaliana. The most dramatic change after F. oryzae inoculation was observed in the root architecture, as evidenced by increased lateral root growth but reduced primary root length, similar to the effect of auxin, a significant plant growth hormone. The expression of genes responsible for auxin biosynthesis, transport, and signalling was regulated in Arabidopsis roots after F. oryzae cocultivation. Indole derivatives were detected at significantly higher levels in liquid media after cocultivation compared with separate cultivation of Arabidopsis and F. oryzae. Consistently, the expression of indole biosynthetic genes was highly upregulated in F. oryzae upon treatment with Arabidopsis exudates. Global analysis of Arabidopsis gene expression at the early stage after F. oryzae cocultivation suggested that signals were exchanged to initiate Arabidopsis–F. oryzae interactions. All these results suggest that signalling molecules from Arabidopsis roots are perceived by F. oryzae and induce the biosynthesis of indole derivatives in F. oryzae, consequently stimulating Arabidopsis lateral root growth.

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Section: Global Analysis Of Arabidopsis Gene Expression During Earlmentioning

confidence: 99%

Endophytic fungus Falciphora oryzae promotes lateral root growth by producing indole derivatives after sensing plant signals

Sun

Wang

et al. 2019

Plant Cell & Environment

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“…This is the case of RALF (Rapid ALkalinization Factor), which has been shown to arrest root growth and development in tomato and Arabidopsis (30), and caffeoyl shikimate esterase (CSE), which is an enzyme central to the lignin biosynthetic pathway (31). It is well known that lignin biosynthesis contributes to plant growth, tissue and organ development, and response to a variety of biotic and abiotic stresses (32). Some other Oe9 unique genes were associated with seed dormancy and sugar signaling, DOG1 (33), and positive regulation of germination, PELPK1 (34) (See Additional file 2: Table S2).…”

Section: New Assembly Version Of the Reference Olive (Cultivar Farga)mentioning

confidence: 99%

Genomic evidence for recurrent genetic admixture during domestication mediterranean olive trees (Olea europaea)

Julca

Marcet‐Houben

Cruz

et al. 2020

Preprint

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BackgroundThe olive tree (Olea europaea L. subsp. europaea, Oleaceae) has been the most economic perennial crop for Mediterranean countries since its domestication around 6,000 years ago. Two taxonomic varieties are currently recognized: cultivated (var. europaea) and wild (var. sylvestris) trees. To shed light into the recent evolution and domestication of the olive tree, we sequenced the genomes of twelve individuals: ten var. europaea, one var. sylvestris, and one outgroup taxon (subsp. cuspidata). All of them were analysed together with an improved assembly of var. europaea reference genome and the available assembly of var. sylvestris.ResultsOur analyses show that cultivated olives exhibit slightly lower levels of overall genetic diversity than wild forms, and that this can be partially explained by the occurrence of a mild population bottleneck 5000-7000 years ago during the primary domestication period. We also provide the first phylogenetic analysis of genome-wide sequences, which supports a continuous process of domestication of the olive tree. This, together with population structure and introgression analyses highlights genetic admixture with wild populations across the Mediterranean Basin in the course of domestication.ConclusionsAltogether, our results suggest that a primary domestication area in the eastern Mediterranean basin was followed by numerous secondary events across most countries of southern Europe and northern Africa, often involving genetic admixture with genetically rich wild populations, particularly from the western Mediterranean Basin. Based on selection tests and a search for selective sweeps, we found that genes associated with stress response and developmental processes were positively selected in cultivars. However, we did not find evidence that genes involved in fruit size or oil content were under positive selection.

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“…In general, a significant reduction in lignin content represents low yields, lodgings, and long‐term survival reduction in some perennial species . On the other hand, the reduction of lignin biosynthesis, besides exerting negative effects on the growth, development, and lodging of the plant, can also reduce biotic and abiotic resistance and stresses, which could result in a serious threat in agricultural production . However, it is possible to reduce lignin in some populations without causing damage to their physical fitness .…”

Section: Sugarcane Genetic Engineering and Genes Rolementioning

confidence: 99%

“…41 On the other hand, the reduction of lignin biosynthesis, besides exerting negative effects on the growth, development, and lodging of the plant, can also reduce biotic and abiotic resistance and stresses, which could result in a serious threat in agricultural production. 42 However, it is possible to reduce lignin in some populations without causing damage to their physical fitness. 41 Genetic modifications can improve the varieties of sugarcane to obtain cultivars with high cellulose contents and less recalcitrance (low lignin content) to bioconversion, without affecting the development of the plant under controlled conditions.…”

Section: Sugarcane Genetic Engineering and Genes Rolementioning

confidence: 99%

Sugarcane biomass conversion influenced by lignin

Schmatz

Tyhoda

Brienzo

2019

Biofuels Bioprod Bioref

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Plant biomass residues are renewable sources for the production of biofuels and high‐value macromolecules. Sugarcane bagasse is one such plant biomass residue that is available from the sugar‐processing industry. It is used as a raw material for biobased ethanol production. However, some of its properties and its behavior during processing have a major inhibitory effect on its successful conversion. Chief among these inhibitory properties are the lignin content, its distribution in plant tissues, and its chemical properties. These make the materials naturally resistant to bioconversion processes. Further, lignin and carbohydrate degradation products can be formed during acid pretreatment, which is one of the major steps during biomass conversion to bioethanol. These products negatively affect the liberation of fermentable sugars and the yield of ethanol during the fermentation stage of the conversion process. Other factors that also have an influence on the production of fermentable sugar are related to the different structural arrangement of plant tissues (cane fractions of the node, internode, and external fraction), as well as biomass variety. Biomass varieties with low lignin content result in an improved yield of fermentable sugars, which in turn contributes to improved viability of the second‐generation bioethanol production processes. By selecting sugarcane varieties with the best properties, ethanol production can be increased without increasing the total area under cultivation. Efforts have been dedicated to reducing biomass recalcitrance by classical and precision breeding. Genetic modification of sugarcane alters the genes responsible for the encoding enzymes for lignin biosynthesis, generating sugarcane with low recalcitrance. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

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Lignins: Biosynthesis and Biological Functions in Plants

Cited by 875 publications

References 137 publications

Endophytic fungus Falciphora oryzae promotes lateral root growth by producing indole derivatives after sensing plant signals

Endophytic fungus Falciphora oryzae promotes lateral root growth by producing indole derivatives after sensing plant signals

Genomic evidence for recurrent genetic admixture during domestication mediterranean olive trees (Olea europaea)

Sugarcane biomass conversion influenced by lignin

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