Author/Editor		Petrovič, Nataša; Miersch, Otto; Ravnikar, Maja; Kovač, Maja
Title		Relation between the endogenous jasmonic acid and decreased potato virus Yntn concentration in potato treated with jasmonic acid
Type		članek
Source		Phyton-Ann Rei Bot A
Vol. and No.		Letnik 39, št. 3 Spec Iss
Publication year		1999
Volume		str. 249-52
Language		eng
Abstract		Systemic infection of potato (Solanum tuberosum L.) cv. Igor grown in vitro with potato virus Y NTN (PVY NTN) resulted in the accumulation of endogenous jasmonic acid (JA) in plant roots, and in decreased plant fresh and dry weight, especially obvious in plant roots (Petrovič & al. 1997). The addition of exogenous 0.1 microM JA to the growth medium reduced virus content (Petrovič & Ravnikar 1995). In order to find the experimental explanation for lower PVY NTN- concentration in plants treated with 0.1 microM JA, we compared biochemical data on endogenous jasmonic acid with morphological characteristics of JA-treated plants. JA-treatment did not influence the virus-induced changes in distribution endogenous JA between shoots and roots, but it reduced the endogenous JA levels, most visible in infected roots. Simultaneously, JA treatment reduced virus-induced decrease in plant fresh and dry weight, most visible in plant shoots. Present data suggest that the virus may influence the sensitivity of potato plants to exogenous JA treatment.
Descriptors		PLANT GROWTH REGULATORS POTATOES POTYVIRUS