TY - JOUR
T1 - An endogenous suppressor of the defense response in pisum sativum
AU - Nasu, Kimio
AU - Shiraishi, Tomonori
AU - Yoshioka, Hirofumi
AU - Hori, Naohiro
AU - Ichinose, Yuki
AU - Yamada, Tetsuji
AU - Oku, Hachiro
N1 - Funding Information:
The authors are deeply grateful to Dr. W.R. Bushnell, University of Minnesota, St Paul, MN, U.S.A., for his valuable suggestions in the preparation of the manuscript. We also thank Mr. S. Kawamata, Takasago Perfume Co. Ltd., Tokyo, Japan, and Mr. Y. Tanaka and Mr. H. Ono in our laboratory for their technical assistance. This research was supported in part by Grants-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan.
PY - 1992/7
Y1 - 1992/7
N2 - Healthy pea plants contain a substance, tentatively called "endogenous suppressor", which specifically suppresses the accumulation of pisatin in pea plants that is induced by treatment with CuCl2 or an elicitor from Mycosphaerella pinodes. This suppressor elicits the accumulation of phytoalexins in other legumes, such as kidney bean, soybean and cowpea. The endogenous suppressor functions to delay the accumulation of pisatin, the activation of phenylalanine ammonialyase (PAL) and the accumulation of mRNAs for PAL and chalcone synthase induced by the elicitor from M. pinodes. The substance specifically induces susceptibility to nonpathogens, such as Mycosphaerella ligulicola and M. melonis, in pea out of four species of legume tested, but the effect is not cultivar-specific. Thus, the endogenous suppressor in healthy pea plants suppresses a series of self-defense reactions and induces susceptibility in pea plants in a species-specific manner, being similar to the exogenous fungal suppressor from the pea pathogen, M.pinodes.
AB - Healthy pea plants contain a substance, tentatively called "endogenous suppressor", which specifically suppresses the accumulation of pisatin in pea plants that is induced by treatment with CuCl2 or an elicitor from Mycosphaerella pinodes. This suppressor elicits the accumulation of phytoalexins in other legumes, such as kidney bean, soybean and cowpea. The endogenous suppressor functions to delay the accumulation of pisatin, the activation of phenylalanine ammonialyase (PAL) and the accumulation of mRNAs for PAL and chalcone synthase induced by the elicitor from M. pinodes. The substance specifically induces susceptibility to nonpathogens, such as Mycosphaerella ligulicola and M. melonis, in pea out of four species of legume tested, but the effect is not cultivar-specific. Thus, the endogenous suppressor in healthy pea plants suppresses a series of self-defense reactions and induces susceptibility in pea plants in a species-specific manner, being similar to the exogenous fungal suppressor from the pea pathogen, M.pinodes.
KW - Defense response
KW - Elicitor
KW - Endogenous suppressor
KW - Mycosphaerella pinodes (Berk. et Blox.) Vestergren
KW - Phytoalexins
KW - Pisum sativum L.
UR - https://www.scopus.com/pages/publications/0347762463
UR - https://www.scopus.com/pages/publications/0347762463#tab=citedBy
M3 - Article
AN - SCOPUS:0347762463
SN - 0032-0781
VL - 33
SP - 617
EP - 626
JO - Plant and Cell Physiology
JF - Plant and Cell Physiology
IS - 5
ER -