scholarly journals Agro-ecological variations of sheath rot disease of rice caused by Sarocladium oryzae and DNA fingerprinting of the pathogen’s population structure

2015 ◽  
Vol 14 (4) ◽  
pp. 18140-18152 ◽  
Author(s):  
M. Tajul Islam Chowdhury ◽  
M. Salim Mian ◽  
M.A. Taher Mia ◽  
M.Y. Rafii ◽  
M.A. Latif
Keyword(s):  
Population Structure ◽  
Dna Fingerprinting ◽  
Rot Disease ◽  
Sheath Rot

scholarly journals Assessment of Sarocladium oryzae Growth Inhibition, the Causal Agent of Rice Sheath Rot Disease, Using Methanol Extract of Binahong Leaves

2019 ◽  
Vol 2 (1) ◽  
pp. 15
Author(s):  
Endah Yulia ◽  
Silviya Rahma Dhiya Syafira ◽  
Fitri Widiantini ◽  
Wawan Kurniawan
Keyword(s):  
Growth Inhibition ◽  
Leaf Extract ◽  
Plant Protection ◽  
Colony Growth ◽  
Leaf Sheath ◽  
Control Treatment ◽  
Botanical Pesticide ◽  
Plant Pest ◽  
Rot Disease ◽  
Sheath Rot

Sheath rot disease caused by Sarocladium oryzae is an important disease on rice. The pathogen that infects uppermost leaf sheath enclosing to the young panicles can cause yield losses up to 85%. Though the disease is commonly controlled using synthetic fungicides, the use of natural products that safer to the environment have been enormously explored. The research aimed to test growth inhibition of S. oryzae colony using methanol leaf extract of binahong (Anredera cordifolia). The research was carried out from June until December 2017 at the Laboratory of Biotechnology Plant Protection, Department of Plant Pest and Diseases, Faculty of Agriculture, Universitas Padjadjaran. The method used was Randomized Complete Design consisted of six treatments and four replications. The treatments were five concentrations of binahong leaf extract of 0.125%, 0.25%, 0.5%, 1%, 2% and one control treatment. The result showed that binahong leaf extract did not inhibit the growth of S. oryzae. The highest inhibition percentage of 4.55% at 0.25% concentration was considered to be a low inhibition category. Although the colony growth of S. oryzae was not significantly inhibited, the extract caused hyphal abnormalities. This actually shows the antifungal potency of the binahong leaf extract that needed further examination with more adequate methods.Keywords : Anredera cordifolia, botanical pesticide, rice sheath rot

scholarly journals Natural Occurrence of Fumonisins in Rice with Fusarium Sheath Rot Disease

Plant Disease ◽  
1998 ◽  
Vol 82 (1) ◽  
pp. 22-25 ◽  
Author(s):  
H. K. Abbas ◽  
R. D. Cartwright ◽  
W. T. Shier ◽  
M. M. Abouzied ◽  
C. B. Bird ◽  
...  
Keyword(s):  
High Performance ◽  
Brown Rice ◽  
The United States ◽  
Enzyme Linked Immunosorbent Assay ◽  
Natural Occurrence ◽  
White Rice ◽  
Rough Rice ◽  
Rot Disease ◽  
Sheath Rot ◽  
Good Agreement

Twenty samples of rough rice (Oryza sativa) (unpolished kernels) collected during the 1995 harvest season from Arkansas (seven samples) and Texas (13 samples) were obtained from rice fields known to include plants with symptoms of Fusarium sheath rot putatively caused by Fusarium proliferatum. Samples were analyzed for fumonisin B1 (FB1) at three laboratories using three different extracting solvents by high-performance liquid chromatography (HPLC) or enzyme-linked immunosorbent assay (ELISA) methods. Forty percent of the samples were positive for FB1 at levels ≤4.3 μg/g by HPLC. The same samples contained FB1 at ≤3.6 μg/g when measured by an ELISA method. Most samples that were positive for FB1 were positive for fumonisin B2 (FB2) and fumonisin B3 (FB3) by HPLC at levels ≤1.2 μg/g. Very good agreement was obtained among the two laboratories using HPLC methods and the third using ELISA. Shelling of the unpolished rice results in hull and brown rice fractions. In a sample that contained 4.3 μg/g in whole kernels, the fumonisin level was very high in hulls (≤16.8 μg/g) and low in brown rice (≤0.9 μg/g). Milling of brown rice results in bran and white rice fractions. Fumonisins were found in bran at a level of ≤3.7 μg/g but were below the level of detection by HPLC in white rice. The presence of fumonisins (FB1, FB2, and FB3) was confirmed by fast atom bombardment/mass spectrometry. This is the first report of fumonisins in naturally contaminated rice in the United States.

Role of mealy bug on sheath rot disease manifestation in rice plants

1988 ◽  
Vol 34 (3) ◽  
pp. 356-357 ◽  
Author(s):  
P. Lakshmanan ◽  
T. Manoharan ◽  
S. Mohan
Keyword(s):  
Disease Manifestation ◽  
Rice Plants ◽  
Rot Disease ◽  
Mealy Bug ◽  
Sheath Rot
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