linkedin post 2020-10-03 03:46:00

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FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on the return of seagrasses to the water after their epic conquest of terrestrial habitats on leaving the sea. This is the plant equivalent of the whale journey, and no less difficult genetically, biochemically, metabolically, and anatomically. On leaving the sea for the land they became different organisms, and so with their return to the sea. It is an epic story in the true sense of the word, impressive in scope and achievement, the Iliad of the plant world. View in LinkedIn
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linkedin post 2020-10-02 02:48:49

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“Time present and time past" "Are both perhaps present in time future," "And time future contained in time past." "If all time is eternally present" "All time is unredeemable." "What might have been is an abstraction" "Remaining a perpetual possibility" "Only in a world of speculation." "What might have been and what has been" "Point to one end, which is always present.”" "(T. S. Eliot Four Quartets). https://lnkd.in/dufddhX View in LinkedIn
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linkedin post 2020-10-02 02:45:00

linkedin post 2020-10-02 02:45:00

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ATTENTION. "On the other hand, attention is a feature of intelligent conduct in the present, whereby an organism selectively responds to ever-shifting stimuli in a way that allows it to maintain adequate levels of adaptation to its environment. Before processing, evaluating and communicating information, plants must first attend to—or take note of—the bits that are relevant to their optimal growth and development." http://www.tandfonline.com/doi/full/10.4161/psb.23902#abstract View in LinkedIn
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linkedin post 2020-10-02 02:43:25

linkedin post 2020-10-02 02:43:25

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PAST-BIASED MARKER. "Studies of plant intelligence have tended to concentrate on memory as a benchmark of intelligent behavior. Although memory has a bearing on all three modalities of time, including a remembered past event, the present of storage and the possibility of future retrieval, it is a marker of intelligence heavily biased toward the past." http://www.tandfonline.com/doi/full/10.4161/psb.23902#abstract View in LinkedIn
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linkedin post 2020-10-03 04:12:09

linkedin post 2020-10-03 04:12:09

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INCREASED SALINITY LEVELS. "One of the questions that has to remain open is how exactly do seagrasses deal with the high salinity of the ocean. Seagrasses have been found to harbor increased intracellular levels of Na+ and K+ as compared to terrestrial angiosperm species as well as to other aquatic angiosperms." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
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linkedin post 2020-10-03 04:09:08

linkedin post 2020-10-03 04:09:08

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FRESH VS SALT WATER. "A number of terrestrial lineages of plants have evolved into aquatic-freshwater hydrophytes and a number of morphological features are shared by both hydrophytes and seagrasses, e.g., the presence of a diffusive boundary layer around the leaves, a photosynthetic epidermis, loss of stomata and the development of aerenchyma." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
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linkedin post 2020-10-03 04:07:21

linkedin post 2020-10-03 04:07:21

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DATA LIMITATIONS. "The available dataset allowed only for the investigation of 189 orthologous clusters, equivalent to ~1% of the A. thaliana genome. Since orthologous clusters include only ESTs from both seagrasses, the presented dataset is not an unbiased sample of the genome and is probably enriched for genes that show significant expression levels in both seagrass species." (ESTs = expressed sequence tags). http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
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