OsCASP1 forms complexes with itself and OsCASP2 in rice

Wang, Zhigang; Shi, Mingxing; Wei, Qiuxing; Chen, Zhiwei; Huang, Jingjing; Xia, Jixing

doi:10.1080/15592324.2019.1706025

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…There are 6 OsCASPs and 28 OsCASPLs in rice ( Figure S1 ), and the function of OsCASP1 has recently been studied, which indicates that OsCASP1 is required for CS formation in endodermal cells ( Wang Z. et al., 2019 ). OsCASP1 can form complexes with itself and OsCASP2, which leads to ectopic protein accumulation in rice cell under control of the 35S promoter ( Wang Z. et al., 2020 ). The rice root system is more complex than that of Arabidopsis , and its radial structure includes the epidermis, exodermis, sclerenchyma, midcortex, endodermis, and stele from the outside inward ( Rebouillat et al., 2009 ).…”

Section: Introductionmentioning

confidence: 99%

Rice OsCASP1 orchestrates Casparian strip formation and suberin deposition in small lateral roots to maintain nutrient homeostasis

et al. 2022

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Arabidopsis Casparian strip membrane domain proteins (CASPs) form a transmembrane scaffold to recruit lignin biosynthetic enzymes for Casparian strip (CS) formation. Rice is a semi-aquatic plant with a more complex root structure than Arabidopsis to adapt its growing conditions, where the different deposition of lignin and suberin is crucial for adaptive responses. Here, we observed the structure of rice primary and small lateral roots (SLRs), particularly the deposition patterns of lignin and suberin in wild type and Oscasp1 mutants. We found that the appearance time and structure of CS in the roots of rice are different from those of Arabidopsis and observed suberin deposition in the sclerenchyma in wild type roots. Rice CASP1 is highly similar to AtCASPs, but its expression is concentrated in SLR tips and can be induced by salt stress especially in the steles. The loss of OsCASP1 function alters the expression of the genes involved in suberin biosynthesis and the deposition of suberin in the endodermis and sclerenchyma and leads to delayed CS formation and uneven lignin deposition in SLRs. These different depositions may alter nutrient uptake, resulting in ion imbalance in plant, withered leaves, fewer tillers, and reduced tolerance to salt stress. Our findings suggest that OsCASP1 could play an important role in nutrient homeostasis and adaptation to the growth environment.

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Section: Introductionmentioning

confidence: 99%

Rice OsCASP1 orchestrates Casparian strip formation and suberin deposition in small lateral roots to maintain nutrient homeostasis

et al. 2022

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“…Although the genetic regulation of Casparian strips and compensatory lignin share common components in Arabidopsis, is it so far unclear whether the pathways that form these distinct lignin patterns are conserved across different species, and how such pathways evolved ( Li et al, 2018 ; Wang et al, 2019b , 2020 ). Comparing SCHENGEN and immune response pathways might help to shed light on the relationship between developmental and immune-induced apoplastic barriers (see Box 3 ).…”

Section: Lignin For Apoplastic Barriers: Casparian Strips and Compens...mentioning

confidence: 99%

Development and diversity of lignin patterns

Emonet

Hay

2022

Plant Physiology

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Different patterns of lignified cell walls are associated with diverse functions in a variety of plant tissues. These functions rely on the stiffness and hydrophobicity that lignin polymers impart to the cell wall. The precise pattern of subcellular lignin deposition is critical for the structure-function relationship in each lignified cell type. Here, we describe the role of xylem vessels as water pipes, Casparian strips as apoplastic barriers, and the role of asymmetrically lignified endocarp b cells in exploding seed pods. We highlight similarities and differences in the genetic mechanisms underpinning local lignin deposition in these diverse cell types. By bringing together examples from different developmental contexts and different plant species, we propose that comparative approaches can benefit our understanding of lignin patterning mechanisms.

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“…These characteristics of CASPs are conserved in other plant species such as rice and tomato. [8][9][10][11] To search for genes that regulate CS development, Niko Geldner and colleagues developed an ingenious assay to screen for mutants with leaky CS, employing the stele active promoter proSHR to drive β-glucuronidase as a reporter. 12 Four genes were identified from this screen and named SCHENGEN (SGN).…”

Section: The Upstream Signaling Pathway For Cs Formationmentioning

confidence: 99%

Are cuproproteins part of the multi-protein framework for making the Casparian strip?

Zhuang

2020

Plant Signaling & Behavior

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Casparian strip (CS) is a lignified structure localized on the cell wall between adjacent root endodermal cells and functions as an apoplastic diffusion barrier in the root. The polarly localized, lignin-based CS is an excellent system for studying peptide signaling and position recognition. In this short review, we summarize advances in the past decade on the molecular mechanism governing CS development. In addition to the multi-protein framework underlying the CS membrane domain, we discuss recently observed participation of cell wall located cuproproteins in CS formation. These new discoveries shed light on a potential CS wall domain that coordinates with the membrane domain to provide bidirectional positional information for guiding precise CS development.

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OsCASP1 forms complexes with itself and OsCASP2 in rice

Cited by 6 publications

References 10 publications

Rice OsCASP1 orchestrates Casparian strip formation and suberin deposition in small lateral roots to maintain nutrient homeostasis

Rice OsCASP1 orchestrates Casparian strip formation and suberin deposition in small lateral roots to maintain nutrient homeostasis

Development and diversity of lignin patterns

Are cuproproteins part of the multi-protein framework for making the Casparian strip?

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