linkedin post 2020-09-26 03:21:37

Uncategorized
EARLY PLANT SEEDS. "However, do we generally appreciate the evolution of this adaptation, much less the diverse effects it has had on terrestrial ecosystems and, indeed, our own culture? No. We take it for granted, even though land plants evolved the seed millions of years before the first amniote is recorded in the fossil record." https://academic.oup.com/bioscience/article/65/6/626/304981/Seeds-and-Fruits-Underwriting-the-Diversity-of View in LinkedIn
Read More
linkedin post 2020-09-27 03:02:46

linkedin post 2020-09-27 03:02:46

Uncategorized
SUBMERGED LIFE. "The photosynthetic apparatus needs to be modulated to accommodate the changes in light attenuation through the water depth. Consequently, the overall light intensity is decreased and the wavelength composition of sunlight reaching underwater plants is different. Accordingly, seagrasses have one of the highest light requirements among angiosperms." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
Read More
linkedin post 2020-09-26 03:19:26

linkedin post 2020-09-26 03:19:26

Uncategorized
PLANT TRANSITION TO DRY LAND. "Plants faced precisely the same problem: that of the pteridophytic life cycle with its free-living gametophytes and swimming sperm in need of freestanding water, being dragged from their supportive environment by the increasingly complex sporophytic adaptations to life on land." https://academic.oup.com/bioscience/article/65/6/626/304981/Seeds-and-Fruits-Underwriting-the-Diversity-of View in LinkedIn
Read More

linkedin post 2020-09-26 03:17:28

Uncategorized
FRAGMENT FROM NATURE explores for this and next weekend the ancient transition of plants from the water to dry land, and then those that returned to salt water. Those plants that re-adapted to salt water are the focus of this fragment. This is the sister posting to match the one about the return of the whales to the sea a couple of weeks ago. Like the whales, plants returning to the sea had to reinvent solutions to metabolic problems including salt toxicity, low CO2 diffusion rates, and low light levels. View in LinkedIn
Read More
linkedin post 2020-09-27 02:59:06

linkedin post 2020-09-27 02:59:06

Uncategorized
PARALLEL EVOLUTION OF SEAGRASSES. "Phylogenetic analysis of members of the entire order, based on the plastid gene encoding for RuBisCO large subunit, indicates that the return into the sea occurred at least three times independently through parallel evolution from a common aquatic-freshwater ancestor of terrestrial origin." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
Read More
linkedin post 2020-09-27 02:57:33

linkedin post 2020-09-27 02:57:33

Uncategorized
CRETACEOUS ORIGINS. "Seagrasses belong to the order of Alismatales which includes 11 families of aquatic-freshwater species and 4 families that are fully marine. The marine families include the Posidoniaceae, Zosteraceae, Hydrocharitaceae, and Cymodoceaceae, and have originated in the Cretaceous period." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
Read More
linkedin post 2020-09-27 02:55:57

linkedin post 2020-09-27 02:55:57

Uncategorized
SEAGRASSES. "The monocotyledonous seagrasses represent, in fact, a polyphyletic group of plants that can live underwater in fully marine environments. At least three independent seagrass lineages, but no other angiosperm species, have evolved to a life in the marine environment." http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8 View in LinkedIn
Read More
linkedin post 2020-09-28 03:16:26

linkedin post 2020-09-28 03:16:26

Uncategorized
PRESENT AND FUTURE ASSESSMENT. "Thus, at each setting of the environment, the individual plant can access information that it can use to construct a response and to ensure that overall, maximal fitness will be achieved. The implication is that the difference between the optimal niche/phenotype and the present environment and present phenotype can be measured." http://aob.oxfordjournals.org/content/92/1/1.full View in LinkedIn
Read More