Đăng nhập
Tìm kiếm nâng cao
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Kỷ yếu hội nghị quốc tế 2012
Số tạp chí (2012) Trang: 209
Tạp chí: 15th International Congress on Molecular Plant-Microbe Interactions (IS-MPMI 2012), 29/7-2/8/2012, Kyoto, Japan

Chromolaena odorata is an invasive weed from the Neotropics, but we have recently found that an aqueous extract of the plant could control important diseases in rice under both controlled and field conditions by application to the seeds before sowing or by spraying on the leaves. Indeed, significant control was obtained of sheath blight (Rhizoctonia solani), brown spot (Bipolaris oryzae), rice blast (Pyricularia oryzae) and bacterial blight (Xanthomonas oryzae pv. oryzae) [Khoa et al. (2011). Phytopathology 101:231-240]. Expression of different defence-related genes was studied in plants inoculated with R. solani and included genes encoding PR-proteins [?-1,3-glucanase (PR-2), chitinase (PR-3), thaumatin-like protein (PR-5), peroxidase (PR-9), PR-1b and PBZ1 (both PR-1)] and genes encoding two enzymes involved in the hydrogen peroxide metabolism (superoxide dismutase and catalase). Application of the extract prior to pathogen inoculation resulted in elevated transcript levels of the defence-related genes compared to control plants pre-treated with water. This resulted in decreased fungal growth and reduced formation of infection cushions of R. solani. The results indicate that the protection exerted by the extract involves induced resistance since defence responses were enhanced in plants treated with the extract followed by inoculation with the pathogen compared to control plants pre-treated with water. To identify the active compound(s) responsible for the disease-reducing effect, the extract has been fractioned using group separation and analysed by capillary electrophoresis. The sub-fractions are currently being subjected to NMR analyses for structure elucidation of the active compound(s).

Các bài báo khác
Số tạp chí (2012) Trang:
Tạp chí: Livestock-Based Farming Systems, Renewable Resources and the Environment
Số tạp chí (2012) Trang:
Tạp chí: Water resources and wetlands, Tulcea (ROMANIA), 14-16 September 2012
Số tạp chí (2012) Trang: 73-83
Tạp chí: GI Zeitgeist 2012 , Munster, Germany, March 2012
Số tạp chí (2012) Trang: 251-256
Tạp chí: 10th International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences from 10th to 13th July 2012, Florianópolis, SC, Brazil.
Số tạp chí (2012) Trang:
Tạp chí: Chemistry conference for young scientists 2012 - ChemCYS2012, Blankenberge, Belgium 1-2 March 2012
Số tạp chí (2012) Trang:
Tạp chí: Young Belgian Magnetic Resonance Scientist Symposium YBNMRS 2012 - Spa, Belgium 26-27 November 2012
Số tạp chí (2012) Trang: 415-420
Số tạp chí (2012) Trang:
Tạp chí: The Symposium of The current Status and Future Success Strategies of Korean Food Globalization,15 November, 2012, Korea
Số tạp chí 1(2012) Trang: 26th 15:50-16:25
Tạp chí: International Workshop on Freshwater Biodiversity Coversation in Asia
Số tạp chí 2nd International Conference on Transportation Geotechnics (ICTG)(2012) Trang: 587-592
Tạp chí: Advances in Transportation Geotechnics II
Số tạp chí (2012) Trang: 3113-3118
Tạp chí: IEEE ECCE 12, North Carolina, USA, Sep. 2012.
Số tạp chí 978-1-4673-1128-1(2012) Trang: 1-6
Tạp chí: IEEE PEMWA, USA,Jul. 2012
Số tạp chí (2012) Trang: 1874-1879
Tạp chí: IEEE ISIE, Hangzhou, China, May 2012
Số tạp chí (2012) Trang: 85-86
Tạp chí: Proceeding of 14th International Summer Symposium, International Activities Committee, Nagoya, Japan
Số tạp chí Inforum 2012(2012) Trang: 343-354
Tạp chí: INForum - Simpósio de Informática
Số tạp chí 1(2012) Trang: 1
Tạp chí: 19th Regional Symposium on Chemical Engineering
Số tạp chí 1(2012) Trang: 1
Tác giả: Võ Văn Dứt
Số tạp chí 1(2012) Trang: 1
Tạp chí: IFS 2012
Số tạp chí 1(2012) Trang: 487
Tạp chí: 1st International Conference on Animal Production and environment
Số tạp chí 1(2012) Trang: 1
Tạp chí: 7th Vietnamese-Hungarian International Conference. Can Tho University, 28- 29/8/2012

Vietnamese | English

Vui lòng chờ...