Phleichrome; a new phytotoxic compound produced by Cladosporium phlei.

A phytotoxic compound was isolated from the root extracts of Cymbopogon nardus by bioassay-guided purification and characterized to be myrislignan. Myrislignan significantly inhibited seedling growth of cress at a concentration greater than 100 μM (p < 0.05). The concentrations required for 50% growth inhibition of myrislignan on hypocotyl and root growth of cress were 429 μM and 517 μM, respectively. The inhibition on seedling growth indicated that myrislignan had a phytotoxic activity and may contribute to the phytotoxic effect of C. nardus.

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Contribution of a phytotoxic compound to the allelopathy ofGinkgo biloba

Plant Signaling & Behavior ◽

10.4161/psb.26999 ◽

2013 ◽

Vol 8 (11) ◽

pp. e26999

Author(s):

Hisashi Kato-Noguchi ◽

Sayaka Takeshita

Keyword(s):

Phytotoxic Compound

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Isolation of Borrelidin as a Phytotoxic Compound from a Potato PathogenicStreptomycesStrain

Bioscience Biotechnology and Biochemistry ◽

10.1271/bbb.110799 ◽

2012 ◽

Vol 76 (2) ◽

pp. 353-357 ◽

Cited By ~ 16

Author(s):

Zhisheng CAO ◽

Gholam KHODAKARAMIAN ◽

Kenji ARAKAWA ◽

Haruyasu KINASHI

Keyword(s):

Phytotoxic Compound

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Cladosporium phlei. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20056400959 ◽

1988 ◽

Author(s):

J. C. David

Keyword(s):

New York ◽

New Zealand ◽

North America ◽

Northern Ireland ◽

Geographical Distribution ◽

West Germany ◽

High Humidity ◽

Cladosporium Phlei ◽

Host Infection

Abstract A description is provided for Cladosporium phlei. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Phleumpratense (cf. notes). DISEASE: Eyespot of timothy. GEOGRAPHICAL DISTRIBUTION: Asia: Japan. Australasia: New Zealand. Europe: Denmark, Eire, England, Northern Ireland, Norway, Sweden, USSR (Byelorussia), West Germany. North America: Canada (Quebec), USA (New York, Oregon, Washington). TRANSMISSION: By airborne dispersal of conidia, and by conidia on seeds of the host. Infection requires a high humidity (80-100%) to be successful. Spores germinate at between 3 and 33°C, optimally at 24°C (55, 5249).

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Herbicidal Activity of Curvulinic Acid Isolated from Nimbya alternantherae

Natural Product Communications ◽

10.1177/1934578x1200700118 ◽

2012 ◽

Vol 7 (1) ◽

pp. 1934578X1200700

Author(s):

Jun Li ◽

Yonghao Ye ◽

Xiaoyang Wang ◽

Liyao Dong

Keyword(s):

Acetic Acid ◽

Seed Germination ◽

Root Length ◽

Shoot Length ◽

Herbicidal Activity ◽

Phytopathogenic Fungus ◽

Inhibitory Effects ◽

Liquid Cultures ◽

First Time ◽

Phytotoxic Compound

A phytotoxic compound, identified as 2-(2-acetyl-3,5-dihydroxyphenyl) acetic acid (curvulinic acid), was isolated from liquid cultures of the phytopathogenic fungus Nimbya alternantherae. The activity of curvulinic acid on seed germination and seedling growth of Capsella bursa-pastoris was evaluated. Percentage seed germination of C. bursa-pastoris was decreased with increasing concentrations of curvulinic acid. The compound had stronger inhibitory effects on root length than shoot length. At a concentration of 600 μg·mL−1, curvulinic acid caused 73.5% and 66.7% growth inhibition on roots and shoots with IC50 values of 204.7 and 281.1 μg·mL−1, respectively. The finding of curvulinic acid in N. alternantherae and its herbicidal activity are reported here for the first time.

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