Author/Editor		Pompe, Maruša; Štrukelj, Borut; Ravnikar, Maja
Title		The influence of the proteinase inhibitor EP475 on some morphological characteristics of potato plants (Solanum tuberosum L. cv. Desiree)
Type		članek
Source		Acta Chim Slov
Vol. and No.		Letnik 45, št. 1
Publication year		1998
Volume		str. 79-84
Language		eng
Abstract		EP475 is a synthetic cysteine proteinase inhibitor. The potato plants Solanum tuberosum L. cv. Desiree grew in node culture in controlled conditions. We added 10 microM or 50 microM of EP475 to the media to investigate its influence on some morphological and biochemical characteristics. The medium without EP475 was used as a control. The number of nodes of the major shoot increased significantly under the influence of 10 microM EP475, but the plants shortened under the influence of 50 microM EP475. With the increase of EP475 concentration in the media the primary roots shortened. The number of secondary roots on a single primary root decreased significantly by 50 microM EP475. Application of EP475 also resulted in an increased number of lateral shoots and in a significant decrease of leaf areas. The ratio between dry and fresh weights significantly increased in roots, stems and leaves under the influence of EP475. Thus, EP475 decreased the amount of water in plants. Decreased growth and biosynthesis due to EP475 were probably a consequence of decreased activity of endogenous proteinases.
Descriptors		POTATOES CYSTEINE PROTEINASE INHIBITORS PLANT ROOTS PLANT SHOOTS PLANT LEAVES