linkedin post 2020-09-05 05:28:56

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DECOUPLED DUPLICATE GENES. "In Dipsacales, the first shift from radial to bilateral symmetry is correlated with a duplication event, resulting in two gene copies, and the partial restriction of both copies to exclude the ventral petal lobe. Subsequent shifts to more strongly bilaterally symmetrical flowers involved further restriction of the duplicate copies and a decoupling of expression, such that one copy is more dorsally restricted than the other." http://onlinelibrary.wiley.com/doi/10.1111/nph.13198/full View in LinkedIn
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linkedin post 2020-09-05 05:26:47

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DUAL SYMMETRY FLOWERS. "Nearly all characterized bilaterally symmetrical lineages contain two or more duplicates of CYC2 genes. Plants with floral heads (compact inflorescences) that contain both radial and bilaterally symmetric flowers, such as those in Asteraceae and Dipsaceae, appear to have the greatest numbers of CYC2 genes with differential expression tied to changes in floral symmetry across the inflorescence axis." http://onlinelibrary.wiley.com/doi/10.1111/nph.13198/full View in LinkedIn
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linkedin post 2020-09-05 05:25:54

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DEVELOPMENTAL CHANGES. “During floral development, symmetry may change: monosymmetric flowers may have a polysymmetric early phase; polysymmetric flowers may have a monosymmetric or even asymmetric early phase; more than one symmetry change is also possible.“ https://lnkd.in/dVQT3m7 View in LinkedIn
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linkedin post 2020-09-05 05:22:37

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FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on the theme of floral symmetry. The genetics behind this symmetry have been thoroughly investigated, and are surprisingly simple, given the complex varieties of floral morphology. Flowers are designed for reproduction; 87% of plants are pollinated by animals, insects and birds, and and symmetry functions primarily to attract and to accurately guide plant pollinators to the structures that will make the next generation of plants. For this reason, symmetry is critical for the species. https://lnkd.in/dJGh9CE View in LinkedIn
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linkedin post 2020-09-06 05:33:58

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ALTERING CONSERVED GENES. "This sequential process provides an example of how a conserved GRN could be dynamically altered in divergent groups to evolve a bilaterally symmetrical flower from an actinomorphic ancestor." (GRN = gene regulatory networks). http://onlinelibrary.wiley.com/doi/10.1111/nph.13198/full View in LinkedIn
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linkedin post 2020-09-07 04:31:19

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PLANT ACTION POTENTIALS. "The majority of cells in different plant species are electrically active and excitable, being able to release and propagate action potentials (APs). These electrical signals even influence principal physiological processes such as photosynthesis and respiration." https://lnkd.in/eVTKbBi View in LinkedIn
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linkedin post 2020-09-07 04:29:19

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"ELECTRICAL PHENOMENA in single plant cells are to a great extent very similar to those occurring in animal cells. All plant cells actively maintain an electrical cell membrane potential difference of −30 to −250 mV between the vacuole or cytosol and the external medium." https://lnkd.in/eVTKbBi View in LinkedIn
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