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Environmental Pollutant Anthracene Induces ABA-Dependent Transgenerational Effects on Gemmae Dormancy in Marchantia polymorpha.

Tolopka, J. I., et al. · 2024 · Plants   research

doi:10.3390/plants13212979   PMID:39519898   PMC11548294

Linked genes (10)  2 core 8 peripheral

Gene ID	Name	Evidence / Role	Function (this paper)
Mp2g00670	MpABA1	experimental subject	ABA biosynthesis enzyme studied via two mutant alleles (Mpaba1ge1a, Mpaba1ge1c) in growth and gemmae germination assays. Anthracene-induced transgenerational dormancy requires intact ABA biosynthesis from the mother plant via MpABA1; Mpaba1 gemmae lost the anthracene-induced dormancy delay seen in wild type.
Mp8g17460	MpPYL1	experimental subject	ABA receptor tested via the Mppyl1 loss-of-function mutant in gemmae germination assays. Mppyl1 gemmae from anthracene-exposed mothers still showed dormancy, indicating that ABA perception via MpPYL1 is not required for the full transgenerational tolerance response, unlike ABA biosynthesis.
Mp6g07540	MpDHN1	experimental comparator	ABA-responsive marker gene quantified by RT-qPCR in anthracene-treated plants. Upregulated by ABA and anthracene in wild type, but not induced in ABA biosynthesis or perception mutants, confirming anthracene activates ABA signaling.
Mp4g06390	MpDHN2	experimental comparator	ABA-responsive marker gene measured by RT-qPCR. Induced by anthracene and ABA in wild type but absent in ABA pathway mutants, supporting anthracene-triggered ABA signaling.
—	MpACT missing	experimental tool	Actin reference gene used to normalize transcript abundance in RT-qPCR via the delta-delta-Ct method.
Mp5g08310	MpB3-6	citation background	Transcription factor cited from prior literature as affecting ABA responses in the vegetative thallus and controlling gemma dormancy; used to contextualize ABA pathway conservation, not experimentally tested here.
Mp2g18190	MpPYL2	experimental background	Listed as one of five MpPYL ABA receptors encoded in the M. polymorpha genome; proposed for future higher-order mutant analysis but not directly tested here.
—	MpPYL3	experimental background	One of five MpPYL ABA receptors in the genome; mentioned as a candidate for higher-order mutant studies, not directly examined.
Mp8g18070	MpPYL4	experimental background	One of five MpPYL ABA receptors in the genome; noted as a target for future higher-order mutants, not tested in this work.
Mp6g17820	MpPYL5	experimental background	One of five MpPYL ABA receptors in the genome; cited among receptors that future higher-order mutants could test, not directly assayed.