Mixed metabolism in plant pools

Article Abstract:

Plants with floating leaves are usually C3, according to research into the various photosynthetic processes found in the vegetation of temporary pools. For these plants, a crassulacean acid metabolism system would offer no advantage, as their stomata are in contact with the atmosphere, but they are not short of water. It was also established that aquatic plant species such as Eleocharis acicularis can act as either C3 or C4 plants.

Aquatic plants

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Getting to the roots of tubers

Article Abstract:

Little is known about the origins of plants such as manioc and sweet potato, due to the lack of fossils. Dolores Piperno and Irene Holst now report that starch grains belonging to such plants have survived on the surfaces of prehistoric stone tools. Starch grains were extracted from the crevices of milling stones, and the findings are important in determining with some precision, how such crop species were domesticated.

History, Cassava, Tubers

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Roots of stability

Article Abstract:

A demonstration that when grassland with a high plant diversity is experimentally stressed by drought, it developed rooting systems more effectively than grassland with low diversity is presented. Results reveal that below-ground productivity increased as a response to drought in the more diverse sites.

United States, Evaluation, Adaptation (Physiology), Physiological adaptation, Biological diversity conservation, Biodiversity conservation, Ecological balance

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