scholarly journals Analysis on Blast Fungus-Responsive Characters of a Flavonoid Phytoalexin Sakuranetin; Accumulation in Infected Rice Leaves, Antifungal Activity and Detoxification by Fungus

Molecules ◽  
2014 ◽  
Vol 19 (8) ◽  
pp. 11404-11418 ◽  
Author(s):  
Morifumi Hasegawa ◽  
Ichiro Mitsuhara ◽  
Shigemi Seo ◽  
Kazunori Okada ◽  
Hisakazu Yamane ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Blast Fungus ◽  
Rice Leaves

scholarly journals Antifungal activity of microbial nanoparticles derived from Chaetomium spp. against Magnaporthe oryzae causing rice blast

2020 ◽  
Vol 56 (No. 3) ◽  
pp. 180-190
Author(s):  
Jiaojiao Song ◽  
Kasem Soytong ◽  
Somdej Kanokmedhakul ◽  
Kwanjai Kanokmedhakul ◽  
Supattra Poeaim
Keyword(s):  
Antifungal Activity ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Magnaporthe Oryzae ◽  
Rice Blast ◽  
Spore Production ◽  
Etoac Extract ◽  
Rice Leaves ◽  
Chaetomium Elatum ◽  
Layer Chromatography

The Magnaporthe oryzae isolate PO2 was proven to cause rice blast var. PSL 2 in this study. Chaetomium elatum, Chaetomium lucknowense and Chaetomium brasiliense were antagonised to M. oryzae.  The hexane extract of C. brasiliense gave the highest inhibition of the spore production with an ED<sub>50</sub> of 35 ppm, the EtOAC extract of C. lucknowense inhibited the spore production at 57 ppm and the EtOAC extracts of C. elatum inhibited the spore production at 106 ppm. The nano-CLM (C. lucknowense) inhibited the spore production at 5.24 ppm, the nano-CBH (C. brasiliense) inhibited the spore production at 6.86 ppm and the nano-CEE (C. elatum) inhibited the spore production at 7.89 ppm. The rice leaves treated with nano-CBH from C. brasiliense produced Sakuranertin and Oryzalexin B as seen on the thin layer chromatography where the Rf value was 0.08 assumed to be Sakuranertin, and the Rf value of 0.28 supposed to be Oryzalexin B. It was found that the nanoparticles act as elicitors to induce immunity in rice plants through the production of phytoalexin.

Antifungal activity of pisiferic acid derivatives against the rice blast fungus

1987 ◽  
Vol 26 (12) ◽  
pp. 3175-3179 ◽  
Author(s):  
Koji Kobayashi ◽  
Chikao Nishino ◽  
Hirofumi Tomita ◽  
Masako Fukushima
Keyword(s):  
Antifungal Activity ◽  
Rice Blast ◽  
Rice Blast Fungus ◽  
Blast Fungus

scholarly journals Behavior of Hydroxycinnamates, Related Aldehydes and Alcohols in Rice Leaves Infected by Blast Fungus with Reference to Inducible Lignification

1991 ◽  
Vol 55 (2) ◽  
pp. 623-624
Author(s):  
Minoru Haga ◽  
Hisato Ogata ◽  
Yasuharu Sekizawa ◽  
Yasuharu Sekizawa ◽  
Hiroshi Kurihara
Keyword(s):  
Blast Fungus ◽  
Rice Leaves

Induced Volatiles in Elicitor-treated and Rice Blast Fungus-inoculated Rice Leaves

2002 ◽  
Vol 66 (12) ◽  
pp. 2549-2559 ◽  
Author(s):  
Naomi OBARA ◽  
Morifumi HASEGAWA ◽  
Osamu KODAMA
Keyword(s):  
Rice Blast ◽  
Rice Blast Fungus ◽  
Induced Volatiles ◽  
Blast Fungus ◽  
Rice Leaves

Molecular cloning and differential expression of an aldehyde dehydrogenase gene in rice leaves in response to infection by blast fungus

Biologia ◽  
2007 ◽  
Vol 62 (5) ◽  
Author(s):  
Chun-xia Wu ◽  
Sheng-chang Su ◽  
You-liang Peng
Keyword(s):  
Amino Acid ◽  
Aldehyde Dehydrogenase ◽  
Magnaporthe Grisea ◽  
Acid Methyl Ester ◽  
Amino Acid Residues ◽  
Rt Pcr ◽  
Fungus Infection ◽  
Blast Fungus ◽  
Dehydrogenase Gene ◽  
Rice Leaves

AbstractAldehyde dehydrogenase (ALDH) superfamily is a group of enzymes metabolizing endogenous and exogenous aldehydes. Using differential display RT-PCR and cDNA library screening, a full-length aldehyde dehydrogenase cDNA (ALDH7B7) was isolated from rice leaves infected by incompatible race of blast fungus Magnaporthe grisea. The deduced amino acid sequence consists of 509 amino acid residues and shares 74∼81% identity with those of ALDH7Bs from other plants. ALDH7B7 expression was induced by blast fungus infection, ultraviolet, mechanical wound in rice leaves and was not detected in untreated rice organs. This gene has also been found to be inducible after exogenous phytohormones application, such as salicylic acid, methyl ester of jasmonic acid and abscisic acid. The function of ALDH7B7 in the interaction process between blast fungus and rice is discussed.

scholarly journals The Role of Silicon in Preventing Appressorial Penetration by the Rice Blast Fungus

2008 ◽  
Vol 98 (9) ◽  
pp. 1038-1044 ◽  
Author(s):  
T. Hayasaka ◽  
H. Fujii ◽  
K. Ishiguro
Keyword(s):  
Silica Gel ◽  
Rice Blast ◽  
Rice Blast Fungus ◽  
Leaf Epidermis ◽  
Adaxial Surface ◽  
Rice Plants ◽  
Blast Fungus ◽  
Spray Inoculation ◽  
Rice Leaves

To test the hypothesis that silicon (Si) confers resistance against appressorial penetration of the rice blast fungus, the proportion of appressorial penetration into the leaf epidermis to total appressoria formed was compared among rice plants amended with various rates of silica gel to those plants nonamended. The amounts of Si in the youngest leaves were consistent with the amounts of silica gel applied to the rice plants. Relative Si levels on the adaxial surface of leaves as detected by energy dispersive X-ray analysis also increased with the amounts of silica gel applied. Based on light microscopic observation of the adaxial surface of rice leaves, the proportion of appressorial penetration was reduced by increasing amounts of silica gel applied and increased with the length of period after spray inoculation. Consequently, these results strongly support the hypothesis and suggest that Si in the leaf epidermis may confer resistance against appressorial penetration. Meanwhile, the number of lesions per leaf also decreased with the amount of Si applied, while only a certain part of penetrated appressoria could become sporulating susceptible lesions. This suggests that Si also confers physiological resistance against blast infection after the penetration.

Antifungal activity of a novel compound purified from the culture filtrate of Biscogniauxia sp. O821 against the rice blast fungus Magnaporthe oryzae

2018 ◽  
Vol 84 (2) ◽  
pp. 142-147 ◽  
Author(s):  
Quyet Thi Nguyen ◽  
Kana Ueda ◽  
Tomoko Tamura ◽  
Junichi Kihara ◽  
Kazuhito Itoh ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Culture Filtrate ◽  
Magnaporthe Oryzae ◽  
Rice Blast ◽  
Rice Blast Fungus ◽  
Blast Fungus
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