PtrLAC16 plays a key role in catalyzing lignin polymerization in the xylem cell wall of Populus

Liu, Yadi; Cao, Sheng; Liu, Xiatong; Li, Ying; Wang, Bing; Sun, Yifeng; Zhang, Chong; Guo, Xiao‐Na; Li, Hui; Lu, Hai

doi:10.1016/j.ijbiomac.2021.08.077

Cited by 14 publications

(38 citation statements)

References 33 publications

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“…As expected, no C-lignin was synthesized at the two earliest labeling periods (Fig. 2, A and B), and 13 C-Phe was only incorporated into G-lignin units (Fig. 2B).…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...supporting

confidence: 79%

“…2B). Conversely, 13 C-Phe was incorporated into C-lignin units at 16 and 20 DAP but not incorporated into G units (Fig. 2B).…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 96%

“…We then determined the incorporation of label from 13 C-Phe into monolignol pathway intermediates in the seed coats. There was no measurable incorporation of label into the immediate precursors of C-lignin, caffealdehyde, and caffeyl alcohol, with labeling at 8 to 10 or 12 to 14 DAP (Fig.…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 99%

“…Furthermore, although less label appeared in intermediates potentially common to both G-and C-lignin biosynthesis (coumaroyl shikimate, caffeoyl shikimate, and caffeic acid) from label applied at 16 and 20 DAP, there was now a large increase in label in caffealdehyde and caffeyl alcohol. On the basis of the lack of incorporation of label from 13 C-Phe into G-lignin at the later labeling periods (Fig. 2B), it was expected that the pool of coniferyl alcohol would remain unlabeled when 13 C-Phe was applied at the later times.…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 99%

“…Monolignols are polymerized via free radical reactions initiated/catalyzed by laccases and peroxidases (8), both of which are encoded by large gene families in plants (9,10). Recent studies have suggested that some laccases may show preference for specific monolignols (11)(12)(13), although it is unclear whether the final composition of lignin is determined by monomer availability, laccase/peroxidase specificity, or both.…”

Section: Introductionmentioning

confidence: 99%

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Developmental changes in lignin composition are driven by both monolignol supply and laccase specificity

et al. 2022

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The factors controlling lignin composition remain unclear. Catechyl (C)–lignin is a homopolymer of caffeyl alcohol with unique properties as a biomaterial and precursor of industrial chemicals. The lignin synthesized in the seed coat of Cleome hassleriana switches from guaiacyl (G)– to C-lignin at around 12 to 14 days after pollination (DAP), associated with a rerouting of the monolignol pathway. Lack of synthesis of caffeyl alcohol limits C-lignin formation before around 12 DAP, but coniferyl alcohol is still synthesized and highly accumulated after 14 DAP. We propose a model in which, during C-lignin biosynthesis, caffeyl alcohol noncompetitively inhibits oxidation of coniferyl alcohol by cell wall laccases, a process that might limit movement of coniferyl alcohol to the apoplast. Developmental changes in both substrate availability and laccase specificity together account for the metabolic fates of G- and C-monolignols in the Cleome seed coat.

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“…As expected, no C-lignin was synthesized at the two earliest labeling periods (Fig. 2, A and B), and 13 C-Phe was only incorporated into G-lignin units (Fig. 2B).…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...supporting

confidence: 79%

“…2B). Conversely, 13 C-Phe was incorporated into C-lignin units at 16 and 20 DAP but not incorporated into G units (Fig. 2B).…”

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 96%

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 99%

Section: Incorporation Of 13 C-phe and 13 C-trans-cinnamic Acid Into ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Developmental changes in lignin composition are driven by both monolignol supply and laccase specificity

et al. 2022

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Identification of a novel marker and its associated laccase gene for regulating ear length in tropical and subtropical maize lines

Bi,

Jiang,

Zhang

et al. 2024

Theor Appl Genet

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Key message This study revealed the identification of a novel gene, Zm00001d042906, that regulates maize ear length by modulating lignin synthesis and reported a molecular marker for selecting maize lines with elongated ears. Abstract Maize ear length has garnered considerable attention due to its high correlation with yield. In this study, six maize inbred lines of significant importance in maize breeding were used as parents. The temperate maize inbred line Ye107, characterized by a short ear, was crossed with five tropical or subtropical inbred lines featuring longer ears, creating a multi-parent population displaying significant variations in ear length. Through genome-wide association studies and mutation analysis, the A/G variation at SNP_183573532 on chromosome 3 was identified as an effective site for discriminating long-ear maize. Furthermore, the associated gene Zm00001d042906 was found to correlate with maize ear length. Zm00001d042906 was functionally annotated as a laccase (Lac4), which showed activity and influenced lignin synthesis in the midsection cells of the cob, thereby regulating maize ear length. This study further reports a novel molecular marker and a new gene that can assist maize breeding programs in selecting varieties with elongated ears.

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Genome-wide identification and functional analysis of the peach (P. persica) laccase gene family reveal members potentially involved in endocarp lignification

Qui

Zhou

Pan

et al. 2022

Trees

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PtrLAC16 plays a key role in catalyzing lignin polymerization in the xylem cell wall of Populus

Cited by 14 publications

References 33 publications

Developmental changes in lignin composition are driven by both monolignol supply and laccase specificity

Developmental changes in lignin composition are driven by both monolignol supply and laccase specificity

Identification of a novel marker and its associated laccase gene for regulating ear length in tropical and subtropical maize lines

Genome-wide identification and functional analysis of the peach (P. persica) laccase gene family reveal members potentially involved in endocarp lignification

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