The plant hormone ethylene promotes abiotic stress tolerance in the liverwort Marchantia polymorpha

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dc.contributor.authorBharadwaj, Priyanka S.
dc.contributor.authorSanchez, Lizbeth
dc.contributor.authorLi, Dongdong
dc.contributor.authorEnyi, Divine
dc.contributor.authorVan de Poel, Bram
dc.contributor.authorChang, Caren
dc.date.accessioned2023-09-07T20:23:45Z
dc.date.available2023-09-07T20:23:45Z
dc.date.issued2022-10-18
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.
dc.description.abstractPlants are often faced with an array of adverse environmental conditions and must respond appropriately to grow and develop. In angiosperms, the plant hormone ethylene is known to play a protective role in responses to abiotic stress. Here we investigated whether ethylene mediates resistance to abiotic stress in the liverwort Marchantia polymorpha, one of the most distant land plant relatives of angiosperms. Using existing M. polymorpha knockout mutants of Mpein3, and Mpctr1, two genes in the ethylene signaling pathway, we examined responses to heat, salinity, nutrient deficiency, and continuous far-red light. The Mpein3 and Mpctr1 mutants were previously shown to confer ethylene insensitivity and constitutive ethylene responses, respectively. Using mild or sub-lethal doses of each stress treatment, we found that Mpctr1 mutants displayed stress resilience similar to or greater than the wild type. In contrast, Mpein3 mutants showed less resilience than the wild type. Consistent with ethylene being a stress hormone, we demonstrated that ethylene production is enhanced by each stress treatment. These results suggest that ethylene plays a role in protecting against abiotic stress in M. polymorpha, and that ethylene has likely been conserved as a stress hormone since before the evolutionary divergence of bryophytes from the land plant lineage approximately 450 Ma.
dc.description.urihttps://doi.org/10.3389/fpls.2022.998267
dc.identifierhttps://doi.org/10.13016/dspace/aydj-eyjy
dc.identifier.citationBharadwaj PS, Sanchez L, Li D, Enyi D, Van de Poel B and Chang C (2022) The plant hormone ethylene promotes abiotic stress tolerance in the liverwort Marchantia polymorpha. Front. Plant Sci. 13:998267.
dc.identifier.urihttp://hdl.handle.net/1903/30440
dc.publisherFrontiers
dc.relation.isAvailableAtCell Biology & Molecular Geneticsen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtCollege of Computer, Mathematical & Natural Sciencesen_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectabiotic stress
dc.subjectethylene
dc.subjectliverwort
dc.subjectheat stress
dc.subjectsalinity
dc.subjectnutrient deficiency
dc.subjectfar-red (FR) light
dc.titleThe plant hormone ethylene promotes abiotic stress tolerance in the liverwort Marchantia polymorpha
dc.typeArticle
local.equitableAccessSubmissionNo

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