Lignin biosynthesis and accumulation in response to abiotic stresses in woody plants

Han, Xiaojiao; Zhao, Yanqiu; Chen, Yinjie; Xu, Jing; Jiang, Cheng; Wang, Xiaqin; Zhuo, Renying; Lu, Meng-Zhu; Zhang, Jin

doi:10.48130/fr-2022-0009

Cited by 37 publications

(33 citation statements)

References 99 publications

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“…Although the antioxidant system ( Maya and Matsubara, 2013 ) and plant hormones, especially jasmonic acid (JA) ( Elsharkawy et al., 2012 ), may be involved in the arbuscular mycorrhizal (AM) fungal regulation on the anthracnose disease based on research on herbaceous plants, the deep mechanisms were not elucidated so far. Compared with herbaceous plants, perennial woody plants have the advantages of developed roots and hard stems and increased secondary xylem, which can enhance biotic and abiotic stress tolerance ( Han et al., 2022 ). However, the effect of AMF on the anthracnose pathogen has not been reported in woody plants.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Chen

Ye²,

Sun³

et al. 2023

Front. Plant Sci.

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Tea has been gaining increasing popularity all over the world in recent years, and its yield and quality depend on the growth and development of tea plants [Camellia sinensis (L.) Kuntze] in various environments. Nowadays, biotic stress and extreme weather, such as high temperature, drought, waterlogging, pests, and diseases, bring about much pressure on the production of tea with high quality. Wherein anthracnose, which is the most common and serious disease of tea plants, has earned more and more attention, as its control mainly relies on chemical pesticides. Arbuscular mycorrhizal fungi (AMF), forming symbiosis with most terrestrial plants, participate in plant resistance against the anthracnose disease, which was found by previous studies in a few herbaceous plants. However, there are a few studies about arbuscular mycorrhizal (AM) fungal regulation of the resistance to the anthracnose pathogen in woody plants so far. In this paper, we investigated the effect of AMF on the development of anthracnose caused by Colletotrichum camelliae and tried to decipher the pertinent mechanism through transcriptome analysis. Results showed that inoculating AMF significantly reduced the damage of anthracnose on tea seedlings by reducing the lesion area by 35.29% compared to that of the control. The content of superoxide anion and activities of catalase and peroxidase significantly increased (P < 0.05) in mycorrhizal treatment in response to the pathogen with 1.23, 2.00, and 1.39 times higher, respectively, than those in the control. Pathways of plant hormone signal transduction, mitogen-activated protein kinase (MAPK) signaling, and phenylpropanoid biosynthesis might play roles in this regulation according to the transcriptomic results. Further redundancy analysis (RDA) and partial least squares structural equation modeling (PLS-SEM) analysis found that plant hormones, such as auxin and ethylene, and the antioxidant system (especially peroxidase) were of great importance in the AM fungal alleviation of anthracnose. Our results preliminarily indicated the mechanisms of enhanced resistance in mycorrhizal tea seedlings to the anthracnose pathogen and provided a theoretical foundation for the application of AMF as one of the biological control methods in tea plantations.

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Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Chen

Ye²,

Sun³

et al. 2023

Front. Plant Sci.

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“…Lignin is the main component of the secondary cell wall (Han et al, 2022). In Arabidopsis , KNAT3 can form a heterodimer with KNAT7, interacting with the key secondary cell wall formation transcription factors NST1/2 to regulate syringyl lignin synthesis (Qin et al, 2020; Wang et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Profiling of the gene expression and alternative splicing landscapes of Eucalyptus grandis

Fan,

Lyu,

Zeng

et al. 2024

Plant Cell & Environment

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Eucalyptus is a widely planted hardwood tree species due to its fast growth, superior wood properties and adaptability. However, the post‐transcriptional regulatory mechanisms controlling tissue development and stress responses in Eucalyptus remain poorly understood. In this study, we performed a comprehensive analysis of the gene expression profile and the alternative splicing (AS) landscape of E. grandis using strand‐specific RNA‐Seq, which encompassed 201 libraries including different organs, developmental stages, and environmental stresses. We identified 10 416 genes (33.49%) that underwent AS, and numerous differentially expressed and/or differential AS genes involved in critical biological processes, such as primary‐to‐secondary growth transition of stems, adventitious root formation, aging and responses to phosphorus‐ or boron‐deficiency. Co‐expression analysis of AS events and gene expression patterns highlighted the potential upstream regulatory role of AS events in multiple processes. Additionally, we highlighted the lignin biosynthetic pathway to showcase the potential regulatory functions of AS events in the KNAT3 and IRL3 genes within this pathway. Our high‐quality expression atlas and AS landscape serve as valuable resources for unravelling the genetic control of woody plant development, long‐term adaptation, and understanding transcriptional diversity in Eucalyptus. Researchers can conveniently access these resources through the interactive ePlant browser (https://bar.utoronto.ca/eplant_eucalyptus).

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“…The lignin biosynthesis processes are accomplished by an orchestrated cascade of enzymes, such as HCT, COMT, CCoAOMT, CCR, CAD and PRX, with functions including acylation, methylation, glycosylation, and hydroxylation (Dong and Lin, 2021). As one of the main components of plant cell wall, lignin constitutes the support and transport systems of plants and affects the ability to tolerate biotic or abiotic stresses (Liu et al, 2018b;Han et al, 2022). Although herbaceous and woody plants have similar lignin biosynthesis pathways, the differences in temporal and spatial expression patterns of genes in the lignin biosynthesis pathways may lead to differences in stress tolerance between them (Han et al, 2022).…”

Section: Lignin Biosynthesis and Freezing Tolerancementioning

confidence: 99%

“…As one of the main components of plant cell wall, lignin constitutes the support and transport systems of plants and affects the ability to tolerate biotic or abiotic stresses (Liu et al, 2018b;Han et al, 2022). Although herbaceous and woody plants have similar lignin biosynthesis pathways, the differences in temporal and spatial expression patterns of genes in the lignin biosynthesis pathways may lead to differences in stress tolerance between them (Han et al, 2022). In barley leaves, the expressions of the lignin biosynthesis related genes including PAL, HCT and CAD genes were up-regulated during cold acclimation (Janska et al, 2011).…”

Section: Lignin Biosynthesis and Freezing Tolerancementioning

confidence: 99%

Field plus lab experiments help identify freezing tolerance and associated genes in subtropical evergreen broadleaf trees: A case study of Camellia oleifera

Xie

Zhang²,

Cheng³

et al. 2023

Front. Plant Sci.

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The molecular mechanisms of freezing tolerance are unresolved in the perennial trees that can survive under much lower freezing temperatures than annual herbs. Since natural conditions involve many factors and temperature usually cannot be controlled, field experiments alone cannot directly identify the effects of freezing stress. Lab experiments are insufficient for trees to complete cold acclimation and cannot reflect natural freezing-stress responses. In this study, a new method was proposed using field plus lab experiments to identify freezing tolerance and associated genes in subtropical evergreen broadleaf trees using Camellia oleifera as a case. Cultivated C. oleifera is the dominant woody oil crop in China. Wild C. oleifera at the high-elevation site in Lu Mountain could survive below −30°C, providing a valuable genetic resource for the breeding of freezing tolerance. In the field experiment, air temperature was monitored from autumn to winter on wild C. oleifera at the high-elevation site in Lu Mountain. Leave samples were taken from wild C. oleifera before cold acclimation, during cold acclimation and under freezing temperature. Leaf transcriptome analyses indicated that the gene functions and expression patterns were very different during cold acclimation and under freezing temperature. In the lab experiments, leaves samples from wild C. oleifera after cold acclimation were placed under −10°C in climate chambers. A cultivated C. oleifera variety “Ganwu 1” was used as a control. According to relative conductivity changes of leaves, wild C. oleifera showed more freezing-tolerant than cultivated C. oleifera. Leaf transcriptome analyses showed that the gene expression patterns were very different between wild and cultivated C. oleifera in the lab experiment. Combing transcriptome results in both of the field and lab experiments, the common genes associated with freezing-stress responses were identified. Key genes of the flg22, Ca2+ and gibberellin signal transduction pathways and the lignin biosynthesis pathway may be involved in the freezing-stress responses. Most of the genes had the highest expression levels under freezing temperature in the field experiment and showed higher expression in wild C. oleifera with stronger freezing tolerance in the lab experiment. Our study may help identify freezing tolerance and underlying molecular mechanisms in trees.

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Lignin biosynthesis and accumulation in response to abiotic stresses in woody plants

Cited by 37 publications

References 99 publications

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Profiling of the gene expression and alternative splicing landscapes of Eucalyptus grandis

Field plus lab experiments help identify freezing tolerance and associated genes in subtropical evergreen broadleaf trees: A case study of Camellia oleifera

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