Molecular control of the floral transition in the mast seeding plant Celmisia lyallii (Asteraceae)

التفاصيل البيبلوغرافية
العنوان: Molecular control of the floral transition in the mast seeding plant Celmisia lyallii (Asteraceae)
المؤلفون: Matthew H. Turnbull, Richard C. Macknight, Dave Kelly, Paula E. Jameson, Anthony M. Poole, Samarth, Robyn Lee
المصدر: Molecular ecologyREFERENCES. 30(8)
سنة النشر: 2021
مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, Perennial plant, Fauna, Climate Change, Endangered species, Flowers, Asteraceae, 010603 evolutionary biology, 01 natural sciences, 03 medical and health sciences, Celmisia, Gene Expression Regulation, Plant, Botany, Genetics, Humans, Mast (botany), Gene, Ecology, Evolution, Behavior and Systematics, biology, fungi, food and beverages, Herbaceous plant, biology.organism_classification, Plant Leaves, 030104 developmental biology, Seeds
الوصف: Mast flowering (or masting) is synchronous, highly variable flowering among years in populations of perennial plants. Despite having widespread consequences for seed consumers, endangered fauna and human health, masting is hard to predict. While observational studies show links to various weather patterns in different plant species, the mechanism(s) underpinning the regulation of masting is still not fully explained. We studied floral induction in Celmisia lyallii (Asteraceae), a mast flowering herbaceous alpine perennial, comparing gene expression in flowering and nonflowering plants. We performed translocation experiments to induce the floral transition in C. lyallii plants followed by both global and targeted expression analysis of flowering-pathway genes. Differential expression analysis showed elevated expression of ClSOC1 and ClmiR172 (promoters of flowering) in leaves of plants that subsequently flowered, in contrast to elevated expression of ClAFT and ClTOE1 (repressors of flowering) in leaves of plants that did not flower. The warm summer conditions that promoted flowering led to differential regulation of age and hormonal pathway genes, including ClmiR172 and ClGA20ox2, known to repress the expression of floral repressors and permit flowering. Upregulated expression of epigenetic modifiers of floral promoters also suggests that plants may maintain a novel "summer memory" across years to induce flowering. These results provide a basic mechanistic understanding of floral induction in masting plants and evidence of their ability to imprint various environmental cues to synchronize flowering, allowing us to better predict masting events under climate change.
تدمد: 1365-294X
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac01e56649b41ba9dc2a6f2f4eae313a
https://pubmed.ncbi.nlm.nih.gov/33624370
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....ac01e56649b41ba9dc2a6f2f4eae313a
قاعدة البيانات: OpenAIRE