scholarly journals Antifungal Activity of the Bark Extract of Michelia Alba Against Curvularia Verruculosa Fungal the Cause of Leaf Spot Disease on Rice

2021 ◽  
Vol 14 (3) ◽  
pp. 1655-1659
Author(s):  
I Gusti Agung Gede Bawa ◽  
Ni Wayan Bogoriani
Keyword(s):  
Antifungal Activity ◽  
Leaf Spot ◽  
Bark Extract ◽  
Leaf Spot Disease ◽  
Biomass Formation ◽  
Antifungal Activities ◽  
Spot Disease ◽  
Curvularia Verruculosa ◽  
Fungal Colony

The purpose of this study was observe the antifungal activity of the bark extract of Michelia alba against Curvularia verruculosa fungal of the cause of leaf spot disease in rice. The antifungal activities was carried out using the diffusion well, colony, biomass formation methods. The bark extract of Michelia alba has showed the antifungal activity against Curvularia verruculosa fungal with a minimum inhibition concentratiotn value to be 0.5%. The bark extract of Michelia alba with 2.0% concentration can strongly inhibit the growth of C. Verruculosa with inhibiting capabality is 33.17 mm. This extract at 0.6% concentration was able to completely inhibit the growth of fungal colony and at 2.0% concentration has been able to inhibit completely the biomass formation of C. Verruculosa fungal for a 14-day period of incubation.

scholarly journals Identification Michelia alba barks extract using Gas Chromatography-Mass Spectrometry (GC-MS) and its antifungal properties to inhibit microbial growth

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
I Made Dira Swantara ◽  
I Gusti Agung Gede Bawa ◽  
Dewa Ngurah Suprapta ◽  
Kadek Karang Agustina ◽  
I Gede Rai Maya Temaja
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Leaf Spot ◽  
Microbial Growth ◽  
Chemical Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Bark Extract ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Antifungal Properties

Abstract. Swantara IMD, Bawa IGAG, Suprapta DN, Agustina KK, Temaja IGRM. 2020. Identification Michelia alba barks extract using Gas Chromatography-Mass Spectrometry (GC-MS) and its antifungal properties to inhibit microbial growth. Biodiversitas 21: 1541-1550. Fungicides are substances that inhibit the growth or kill the pathogenic fungi. A substance can be categorized as a fungicide if it shows antifungal activity. This activity is resulting from bioactive compounds derived from the secondary metabolites. Michelia alba bark’s extract could inhibit the growth of Curvularia verruculosa, the cause of leaf spot disease on rice. The purpose of this study was to analyze chemical compounds of bark extract which inhibit the growth of C. verruculosa. The extraction of bark metabolites of M. alba was done using methanol as the solvent. The inhibitory test of the extract was carried out by the diffusion well method on Potato Dextrose Agar (PDA) medium. Analysis of chemical compounds of the M. alba extract was carried out in Gas chromatography-mass spectroscopy. The results of inhibitory test found that the M alba bark extract inhibits the C. verruculosa with the inhibition zone as wide as 36 mm in diameter. The majority of chemical compounds identified from the M. alba extract consisted of 10 compounds, namely: Hexadecanoic acid, methyl ester; 4H-tomentosine; 4H-tomentosine (compound isomer 2); 3-hydroxy pregn-4-ene-20-one; Tomentosine; 2-hydroxy tomentosine; Tert-butyl-2-aminophenylcarbamol; 2H-cyclohepta [b] furan-2-one, 3,3a, 4,7,8,8a-hexahydro-7-methyl-3-methylene-6-(2-formil-3-oxobutyl)-; Isoxanthanol and Xanthanol. To conclude, this extract is useful to treat C. verruculosa that causes leaf spot disease on rice.

scholarly journals First report of Curvularia verruculosa causing leaf spot disease of grape (Vitis vinifera) in Afghanistan

2020 ◽  
Vol 102 (4) ◽  
pp. 1337-1337
Author(s):  
Nasir Ahmed Rajput ◽  
Hussainullah ◽  
Chao Huo ◽  
JiFen Cao ◽  
Muhammad Atiq ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
First Report ◽  
Spot Disease ◽  
Curvularia Verruculosa

scholarly journals In vivo antifungal activity of neem oil and aqueous extracts against leaf spot disease caused by Cercospora abelmoschii on okra

2016 ◽  
Vol 20 (1) ◽  
pp. 33
Author(s):  
Aricléia De Moraes Catarino ◽  
Antonia Alice Costa Rodrigues ◽  
João Victor Jansen De Queiroz ◽  
Luciano Marinho Furtado ◽  
Leilson Lopes Santos Silva Silva
Keyword(s):  
Antifungal Activity ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Aqueous Extracts ◽  
Neem Oil ◽  
Spot Disease ◽  
In Vivo Antifungal Activity

TWO NEW SEVERE LEAF SPOT DISEASE ON FOREST TREES OF JALGAON (MAHARASTRA) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
S. A. FIRDOUSI
Keyword(s):  
Leaf Spot ◽  
Fungal Disease ◽  
Leaf Spot Disease ◽  
Forest Trees ◽  
First Report ◽  
Spot Disease ◽  
Severe Leaf

During the survey of the forest fungal disease, of Jalgaon district, two severe leaf spot diseases on Lannae coromandelica and ( Ougenia dalbergioides (Papilionaceae) were observed in Jalgaon, forest during July to September 2016-17. The casual organism was identified as Stigmina lanneae and Phomopsis sp. respectively1-4,7. These are first report from Jalgaon and Maharashtra state.

Rapid Inoculation Technique and Biological Control of Leaf Spot Disease in Oil Palm

2019 ◽  
Vol 2 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Delia Agustina ◽  
◽  
Cahya Prihatna ◽  
Antonius Suwanto ◽  
◽  
...  
Keyword(s):  
Biological Control ◽  
Oil Palm ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Inoculation Technique ◽  
Spot Disease

scholarly journals Registration of three peanut allotetraploid interspecific hybrids resistant to late leaf spot disease and tomato spotted wilt

2021 ◽  
Author(s):  
Ye Chu ◽  
H. Thomas Stalker ◽  
Kathleen Marasigan ◽  
Chandler M. Levinson ◽  
Dongying Gao ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Interspecific Hybrids ◽  
Leaf Spot Disease ◽  
Late Leaf Spot ◽  
Spot Disease ◽  
Tomato Spotted Wilt
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