TY - JOUR
T1 - Effects of tetracyclic and pentacyclic triterpenoids on growth of phytophthora cactorum
AU - Nes, W. David
AU - Patterson, Glenn W.
PY - 1981/3
Y1 - 1981/3
N2 - The growth effects of adding 16 tetracyclic and pentacyclic triterpenoids (at 10 mg/l) to cultures of Phytophthora cactorum, a fungus unable to epoxidize squalene, have been examined. Tetrahymanol, β-amyrin and α-amyrin promoted growth: lupeol, lanosterol, cycloartenol, betulin, and oleanolic acid had no significant effect on growth relative to a control. Hop-22(29)-ene, lupeone, friedelin, and the eucurbitacins a, b, c, d, and e inhibited growth. The ability of certain pentacyclic triterpenoids to stimulate growth was unexpected since the tetracyclic sterol molecule was thought to be necessary for growth stimulation of pythiaceous fungi. That pentacyclic and various tetracyclic triterpenoids inhibit growth of Phytophthora inddicates these compounds may be naturally occurring fungistatic agents.
AB - The growth effects of adding 16 tetracyclic and pentacyclic triterpenoids (at 10 mg/l) to cultures of Phytophthora cactorum, a fungus unable to epoxidize squalene, have been examined. Tetrahymanol, β-amyrin and α-amyrin promoted growth: lupeol, lanosterol, cycloartenol, betulin, and oleanolic acid had no significant effect on growth relative to a control. Hop-22(29)-ene, lupeone, friedelin, and the eucurbitacins a, b, c, d, and e inhibited growth. The ability of certain pentacyclic triterpenoids to stimulate growth was unexpected since the tetracyclic sterol molecule was thought to be necessary for growth stimulation of pythiaceous fungi. That pentacyclic and various tetracyclic triterpenoids inhibit growth of Phytophthora inddicates these compounds may be naturally occurring fungistatic agents.
UR - http://www.scopus.com/inward/record.url?scp=0019417104&partnerID=8YFLogxK
U2 - 10.1021/np50014a012
DO - 10.1021/np50014a012
M3 - Article
AN - SCOPUS:0019417104
SN - 0163-3864
VL - 44
SP - 215
EP - 220
JO - Journal of Natural Products
JF - Journal of Natural Products
IS - 2
ER -