Changes in shikimate dehydrogenase activity during the development of pepper plants (Capsicum annuum L.)
1994
Dias, Kh. | Bernal', A. | Merrino, F.
Shikimate dehydrogenase (SKDH) activity and total soluble protein content were monitored in the primary, secondary and tertiary leaves, epicotyl, hypocotyl and roots of pepper seedlings (Capsicum annuum L.) during the first four weeks of development. SKDH and total soluble protein content decreased throughout in leaves, but in stem and roots total soluble protein content levelled off after an initial decrease while SKDH increased overall. In the stem parts the increase in SKDH activity was paralleled by an increase in lignin content, suggesting that lignin synthesis is enabled in stem (and probably in root) by increased levels of SKDH (which catalyses the synthesis of lignin precursors), whereas there is no such continuing demand for SKDH in unlignified organs
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