کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8354589 | 1541925 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of phosphorus application on photosynthetic carbon and nitrogen metabolism, water use efficiency and growth of dwarf bamboo (Fargesia rufa) subjected to water deficit
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
SPSLRWCGOGATLMRRMRSMRRGRGPTGDHWUENIRNSCINVFv/Fm - Fv / FmNH4+ - NH4 +NO2− - NO2-NO3− - NO3-Ammonium assimilation - آمونیاک جذب می شودAmmonium - آمونیومamylase - آمیلازOrthophosphate - ارتوفسفاتAMY - امیinvertase - اینورتازGOT - بدست آوردWater use efficiency - بهره وری استفاده از آبGlutamic-oxaloacetic transaminase - ترانس آمیناز glutamic-oxaloaceticIntrinsic water use efficiency - راندمان مصرف آب ذاتیSucrose phosphate synthase - سداز فسفات سروزSucrose synthase - سنتاز ساکاروزLeaf relative water content - محتوای نسبی آب برگnet CO2 assimilation rate - میزان جذب CO2 خالصRelative growth rate - نرخ رشد نسبیNitrate - نیتراتnitrate reductase - نیترات ردوکتازNitrite - نیتریتnitrite reductase - نیتریت ردوکتازStomatal conductance - هدایت گرمایشیPhenotypic plasticity - پلاستیک فتوتایپیNitrate reduction - کاهش نیتراتCarbohydrate - کربوهیدراتNon-structural carbohydrate - کربوهیدرات غیر ساختاریglutamate dehydrogenase - گلوتامات دهیدروژنازglutamate synthase - گلوتامات سنتازGlutamine synthetase - گلوتامین سنتتازglutamic-pyruvic transaminase - گلوتامین-پریوویک ترانس آمیناز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Dwarf bamboo (Fargesia rufa Yi), one of the staple foods for the endangered giant pandas, is highly susceptible to water deficit due to its shallow roots. In the face of climate change, maintenance and improvement in its productivity is very necessary for the management of the giant pandas' habitats. However, the regulatory mechanisms underlying plant responses to water deficit are poorly known. To investigate the effects of P application on photosynthetic C and N metabolism, water use efficiency (WUE) and growth of dwarf bamboo under water deficit, a completely randomized design with two factors of two watering (well-watered and water-stressed) and two P regimes (with and without P fertilization) was arranged. P application hardly changed growth, net CO2 assimilation rate (Pn) and WUE in well-watered plants but significantly increased relative growth rate (RGR) and Pn in water-stressed plants. The effect of P application on RGR under water stress was mostly associated with physiological adjustments rather than with differences in biomass allocation. P application maintained the balance of C metabolism in well-watered plants, but altered the proportion of nitrogenous compounds in N metabolism. By contrast, P application remarkably increased sucrose-metabolizing enzymes activities with an obvious decrease in sucrose content in water-stressed plants, suggesting an accelerated sucrose metabolism. Activation of nitrogen-metabolizing enzymes in water-stressed plants was attenuated after P application, thus slowing nitrate reduction and ammonium assimilation. P application hardly enlarged the phenotypic plasticity of dwarf bamboo in response to water in the short term. Generally, these examined traits of dwarf bamboo displayed weak or negligible responses to water-P interaction. In conclusion, P application could accelerate Pn and sucrose metabolism and slow N metabolism in water-stressed dwarf bamboo, and as a result improved RGR and alleviated damage from soil water deficit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 96, November 2015, Pages 20-28
Journal: Plant Physiology and Biochemistry - Volume 96, November 2015, Pages 20-28
نویسندگان
Chenggang Liu, Yanjie Wang, Kaiwen Pan, Yanqiang Jin, Wei Li, Lin Zhang,