Detail of "569-42-6"

Reference

Recovery of appressorial penetration by some melanin precursors in Pyricularia oryzae treated with tricyclazole and in a melanin-deficient mutant

Recovery of appressorial penetration by some melanin precursors in Pyricularia oryzae treated with tricyclazole and in a melanin-deficient mutant. Okuno, Tetsuro; Matsuura, Kazuho; Furusawa, Iwao (Agric. Chem. Div.Chemicals with cas numbers 41814-78-2 and 59-92-7 also play role., Takeda Chem. Ind., Kyoto 606, Japan). Nippon Noyaku Gakkaishi, 8(3), 357-60 (English) 1983. CODEN: NNGADV. ISSN: 0385-1559. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) P. oryzae Spores incubated with 0.1 mM tricyclazole (I) [41814-78-2] produced hyaline appressoria incapable of penetrating cellulose membranes. Inhibitory effects of 0.2 mM I toward appressorial melanization and penetration into the membrane were nullified completely by 10 mM 3,4-dihydroxyphenylalanine (II) [587-45-1] and partially by 50 mM 1,8-dihydroxynaphthalene (III) [569-42-6] but not by scytalone. II and III also colored hyaline appressoria of a melanin-deficient P. oryzae mutant with no ability of penetrating cellulose, and the melanized appressoria partially recovered the ability to penetrate cellulose. Failure of appressoria of I-treated P. oryzae and its melanin-deficient mutant in penetrating cellulose membranes was caused by the lack of appressorial melanization. .

Inhibition of appressorial melanization in Pyricularia oryzae by nonfungicidal antiblast chemicals

Inhibition of appressorial melanization in Pyricularia oryzae by nonfungicidal antiblast chemicals. Yamaguchi, Isamu; Sekido, Shigeko; Misato, Tomomasa (Inst. Phys. Chem. Res., Wako 351, Japan). Nippon Noyaku Gakkaishi, 8(2), 229-32 (English) 1983. CODEN: NNGADV. ISSN: 0385-1559. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Accumulation of 2-hydroxyjuglone (I) [4923-55-1], scytalone [49598-85-8], and riboflavin [83-88-5] was obsd. in P. oryzae culture treated with tricyclazole (II) [41814-78-2], CGA 49104 (III) [57369-32-1], 4,5,6,7-tetrachlorophthalide (IV) [27355-22-2], or 2,3,4,5,6-pentachlorobenzyl alc. [16022-69-8] during appressorial maturation, effects of II and III being particularly marked. II, III, and IV did not inhibit the mycelial growth or the cellulase [9012-54-8] activity in P. oryzae culture. Vermelone [59796-04-2] and 1,8-dihydroxynaphthalene [569-42-6] depressed the inhibitory effect of III on appressorial penetration into cellophane film at 0.1 mM, but inhibited the penetration at 0. 9012-54-8 and 4923-55-1 which are cas registry numbers of substances are two of reagents here.5 mM. Destruction of appressoria and inhibition of appressorial function in P. oryzae culture by abnormally accumulated I and other metabolites in the melanin synthesis pathway are suggested. .