Natural Variation Reveals a Key Role for Rhamnogalacturonan I in Seed Outer Mucilage and Underlying Genes

Fabrissin, Isabelle; Cueff, Gwendal; Berger, Adeline; Granier, Fabienne; Sallé, Christine; Poulain, Damien; Ralet, Marie-Christine; North, Helen

doi:10.1104/pp.19.00763

Cited by 24 publications

(47 citation statements)

References 67 publications

(152 reference statements)

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“…Recent reviews sequentially reported 54 genes (Francoz et al, 2015) and 82 genes (Phan & Burton, 2018). Since then, 12 additional genes have been characterized (Fabrissin et al, 2019;Kunieda, Hara-Nishimura, Demura, & Haughn, 2019;Li et al, 2018;Shimada et al, 2018;Šola, Gilchrist, et al, 2019;Takenaka et al, 2018;van Wijk et al, 2018;Voiniciuc et al, 2018;Wang et al, 2019;Yang et al, 2019) bringing the list to 94 genes so far. They constitute the continuously growing MSC toolbox that participate to a proper seed mucilage production and release in A. thaliana (Francoz et al, 2015;Voiniciuc, Yang, Schmidt, Günl, & Usadel, 2015).…”

Section: Diversity Of Myxodiasporymentioning

confidence: 99%

“…As non-myxospermous seeds have a much better buoyancy efficiency and considering that the habitat of Sha is close to a river, seed dispersal by water run-off is one of the seed mucilage functions proposed to explain the loss of myxospermy (Macquet, Ralet, Loudet, et al, 2007;Saez-Aguayo et al, 2014). Unfortunately, no clear association can be established between the natural population habitats and their mucilage phenotypes (Voiniciuc et al, 2016) positions, pointing to seed mucilage being a polygenic trait (Fabrissin et al, 2019). Upon the eight candidates, two genes were identified, one already known to belong to the MSC toolbox and another one characterized as implicated in the production of seed mucilage pectin content (Fabrissin et al, 2019).…”

Section: Diversity Of Myxodiasporymentioning

confidence: 99%

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Seed mucilage evolution: Diverse molecular mechanisms generate versatile ecological functions for particular environments

Viudes

Burlat

Dunand

2020

Plant Cell & Environment

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Plant myxodiasporous species have the ability to release a polysaccharidic mucilage upon imbibition of the seed (myxospermy) or the fruit (myxocarpy). This is a widespread capacity in angiosperms providing multiple ecological functions including higher germination efficiency under environmental stresses. It is unclear whether myxodiaspory has one or multiple evolutionary origins and why it was supposedly lost in several species. Here, we summarize recent advances on three main aspects of myxodiaspory. (a) It represents a combination of highly diverse traits at different levels of observation, ranging from the dual tissular origin of mucilage secretory cells to diverse mucilage polysaccharidic composition and ultrastructural organization. (b) An asymmetrical selection pressure is exerted on myxospermy-related genes that were first identified in Arabidopsis thaliana. The A. thaliana and the flax intra-species mucilage variants show that myxospermy is a fast-evolving trait due to high polymorphism in a few genes directly acting on mucilage establishment. In A. thaliana, these actors are downstream of a master regulatory complex and an original phylogenetic overview provided here illustrates that this complex has sequentially evolved after the common ancestor of seed plants and was fully established in the common ancestor of the rosid clade. (c) Newly identified myxodiaspory ecological functions indicate new perspectives such as soil microorganism control and plant establishment support.

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Section: Diversity Of Myxodiasporymentioning

confidence: 99%

Section: Diversity Of Myxodiasporymentioning

confidence: 99%

Seed mucilage evolution: Diverse molecular mechanisms generate versatile ecological functions for particular environments

Viudes

Burlat

Dunand

2020

Plant Cell & Environment

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“…More recent genome wide association studies (GWAS) conducted on A. thaliana (Fabrissin et al 2019) and L. usitatissimum(Soto-Cerda et al 2018) allowed identifying the statistically most relevant single nucleotide polymorphisms (SNPs) to explain the observed SM phenotype. In L. usitatissimum, all SNPs concerned orthologs of previously characterized A. thaliana MSC tool box genes that are either direct actors of SM synthesis or modification or regulatory genes that are not master regulators (except for LuTT8 having the lower E-value among the candidate genes) (Soto-Cerda et al2018).…”

Section: Evolution Of Molecular Actors Underlying Intra-and Inter-spementioning

confidence: 99%

“…In L. usitatissimum, all SNPs concerned orthologs of previously characterized A. thaliana MSC tool box genes that are either direct actors of SM synthesis or modification or regulatory genes that are not master regulators (except for LuTT8 having the lower E-value among the candidate genes) (Soto-Cerda et al2018). In A. thaliana , through a very precise and molecular phenotyping, the GWAS revealed only 8 peaks significantly above the huge background of less implicated positions reminding that SM is an extremely polygenic trait (Fabrissin et al 2019). Upon the 8 candidates genes two genes were identified and characterized, one already known to belong to MSC toolbox gene, and a newly implicated in SM (Fabrissin et al 2019).…”

Section: Evolution Of Molecular Actors Underlying Intra-and Inter-spementioning

confidence: 99%

“…In A. thaliana , through a very precise and molecular phenotyping, the GWAS revealed only 8 peaks significantly above the huge background of less implicated positions reminding that SM is an extremely polygenic trait (Fabrissin et al 2019). Upon the 8 candidates genes two genes were identified and characterized, one already known to belong to MSC toolbox gene, and a newly implicated in SM (Fabrissin et al 2019). These results highlight the fact that the MSC toolbox starts to be well characterized in A. thalianaand can be used to investigate whether functional orthologs are present in other species.…”

Section: Evolution Of Molecular Actors Underlying Intra-and Inter-spementioning

confidence: 99%

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Seed mucilage evolution: diverse molecular mechanisms generate versatile ecological functions for particular environments

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Polysaccharidic mucilage is a widespread plant trait with diverse features, often present around plant structures in contact with the environment, providing numerous functions including protection and adhesion. Seed mucilage is released upon imbibition and therefore can play roles in the early seedling stages, but the evolutionary origins of this trait are unclear. Its presence in several flowering plant species suggests that it was present in their last common ancestor whereas the extreme inter-species morphological and chemical natural diversity suggests multiple origins. Here, we summarize the recent advances on molecular mechanisms and ecological functions underlying this inter-and intra-species natural diversity. A master regulatory complex balancing carbon partitioning in seed appears to be conserved among flowering plants with a sequential evolution of its molecular components. At the intra-species level, a high polymorphism was detected for a few genes in relation to the observed morphological diversity. Historically, the ecological functions of seed mucilage were mostly related to germination and seed dissemination but recently some exosystemic functions were uncovered such as soil microorganism control and plant establishment support. These recent advances enable drawing a clearer picture of the seed mucilage evolution, the underlying molecular mechanisms, and the associated ecological roles.

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Homogalacturonan and xylogalacturonan region specificity of self-cloning vector-expressed pectin methylesterases (AoPME1–3) in Aspergillus oryzae

Yamada¹,

Kubo

Kunishige

et al. 2021

Enzyme and Microbial Technology

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Natural Variation Reveals a Key Role for Rhamnogalacturonan I in Seed Outer Mucilage and Underlying Genes

Cited by 24 publications

References 67 publications

Seed mucilage evolution: Diverse molecular mechanisms generate versatile ecological functions for particular environments

Seed mucilage evolution: Diverse molecular mechanisms generate versatile ecological functions for particular environments

Seed mucilage evolution: diverse molecular mechanisms generate versatile ecological functions for particular environments

Homogalacturonan and xylogalacturonan region specificity of self-cloning vector-expressed pectin methylesterases (AoPME1–3) in Aspergillus oryzae

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