Significance Of Carbonic Anhydrase And Its
Distribution In The Karst Ecosystem
Author(s)
Y. Y. Wu, P. P. Li, B. L. Wang, C. Q Liu, X. T. Li & X. Z. Zhao
Abstract
Carbonic anhydrase (Carbonic anhydrase, CA; carbonate hydrolyase, EC 4.2.1.1)
is a zinc-containing metalloenzyme that catalyzes the reversible conversion of
CO2 to bicarbonate. From the determination and analysis of CA in soil and water
bodies in the karst ecosystem, such results may be obtained that show that the
CA activities in soil are different among soil layers. In the upper layers of soil,
the CA activities are greater than those below; the activities of CA in microalgae
in different lakes are different. The determination and analysis of CA in plants in
the Karst ecosystem show that CA activities vary from plant to plant. The order
is as follows: Parmrlia borreri (4.71) < Parmrlia caperata (5.47) < Pteridium
aquilinum (7.72) < Tortula sinensis (33.45) < Barbula conslricla (40.47) <
Euonymus sp. (283.67) < Toona sinensis (976.47) < Jasminum seguinii
(4895.76) (Unit: WAU/gFW). It can be seen from these results that the plant
evolution coordinates with CA evolution, and CA may regulate the carbon cycle
in the karst ecosystem. It is an important means for maintaining carbon balance
to promote the plant succession of karst ecosystem and sustain the system.
Keywords: carbonic anhydrase, Karst, carbon cycle, carbonate rock,
bicarbonate.
Keywords
carbonic anhydrase, Karst, carbon cycle, carbonate rock,
bicarbonate.
Related Book
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