کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8355601 | 1541951 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biochemical and physiological responses of oil palm to bud rot caused by Phytophthora palmivora
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کلمات کلیدی
PODCATPALTff - TFFEAU - آبElaeis guineensis - الاییز گینهسینسAOS - بهSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازPhotosynthesis - فتوسنتزphenylalanine ammonia-lyase - فنیل آلانین آمونیاک-لیائازPeroxidase - پراکسیدازPolyamines - پلی آمینPolyamine - پلی آمینCatalase - کاتالازglutathione reductase - گلوتاتیون ردوکتازactive oxygen species - گونه های اکسیژن فعال
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In recent years, global consumption of palm oil has increased significantly, reaching almost 43 million tons in 2010. The sustainability of oil palm (Elaeis guineensis) cultivation has been compromised because of the bud rot disease whose initial symptoms are caused by Phytophthora palmivora. There was a significant incidence of the disease, from an initial stage 1 of the disease to the highest stage 5, that affected photosynthetic parameters, content of pigments, sugars, polyamines, enzymatic antioxidant activities, phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) and β-(1,3) glucanase (β-Gluc, EC 3.2.1.39). In healthy palms photosynthesis was 13.29 μmol CO2 mâ2 sâ1 in average, while in stage 5 the average photosynthesis was around 3.66 μmol CO2 mâ2 sâ1. Additionally, total chlorophyll was reduced by half at the last stage of the disease. On the contrary, the contents of putrescine, spermine and spermidine increased three, nine and twelve times with respect to stage 5, respectively. Antioxidant enzyme activities, as well as the phenylalanine ammonia-lyase and β-(1,3) glucanase showed an increase as the severity of the disease increased, with the latter increasing from 0.71 EAU in healthy palms to 2.60 EAU in plants at stage 5 of the disease. The peroxidase (POD, EC 1.11.1.7) enzymatic activity and the content of spermidine were the most sensitive indicators of disease.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 70, September 2013, Pages 246-251
Journal: Plant Physiology and Biochemistry - Volume 70, September 2013, Pages 246-251
نویسندگان
Andrés Leonardo Moreno-Chacón, Jhonatan Eduardo Camperos-Reyes, Rodrigo Andrés Ávila Diazgranados, Hernán Mauricio Romero,