Photosynthesis in Bryophytes and Early Land Plants by David T. Hanson, Steven K. Rice

By David T. Hanson, Steven K. Rice

Bryophytes, that are vital ingredients of ecosystems globally and sometimes dominate carbon and water dynamics at excessive latitudes and elevations, have been additionally one of the pioneers of terrestrial photosynthesis. therefore, as well as their brand new ecological worth, sleek representatives of those teams comprise the legacy of variations that resulted in the greening of Earth. This quantity brings jointly specialists on bryophyte photosynthesis whose study spans the genome and telephone via complete plant and atmosphere functionality and combines that with historic views at the position of algal, bryophyte and vascular plant ancestors on terrestrialization of the Earth. The eighteen well-illustrated chapters exhibit distinct physiological methods to attaining carbon stability and working with environmental barriers and stresses that current an alternate, but profitable procedure for land plants.

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I. Introduction The sum of available evidence indicates that terrestrialization of planet Earth likely began with the colonization of land by photosynthetic prokaryotes such as cyanobacteria, followed by eukaryotic algae much like those occupying modern soils and shallow freshwaters and then the earliest embryophyte plants, which were probably quite closely related to modern bryophytes. Land colonization by algae and earliest plants was prerequisite to the development of soils that supported more complex plant communities and the later rise of land animals.

These carbon-concentration systems endow plant relatives with considerable flexibility in 2 Early Terrestrialization meeting challenges of inorganic carbon availability. For example, a strain of Mougeotia isolated from nuisance growths that form in acidic lakes but are also capable of growth in more alkaline waters appears to upregulate external CA activity when grown at pH 8, by comparison to growth at pH 5 (Arancibia-Avila et al. 2000). This change allows the alga to utilize bicarbonate, which is considerably more abundant at pH 8 than pH 5.

K. ), Photosynthesis in Bryophytes and Early Land Plants, Advances in Photosynthesis and Respiration 37, pp. 1007/978-94-007-6988-5_2, © Springer Science+Business Media Dordrecht 2014 9 10 L. Graham et al. 1. 14 2. 15 3. 15 D. 15 1. 16 2. 16 IV. 17 A. 17 B. 18 C. Microfossils Indicate That Freshwater and/or Terrestrial Eukaryotic Algae Were Present in the Precambrian ....................................................................... 20 D. Fossil Evidence Suggests That Streptophyte Algae Were Established on Land by the Middle Cambrian ..................................................................................

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