کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8387223 | 1543883 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variability of mesophyll conductance and its relationship with water use efficiency in cotton leaves under drought pretreatment
ترجمه فارسی عنوان
تنوع هدایت مزوفیل و ارتباط آن با کارایی مصرف آب در برگ پنبه تحت پیشگیری از خشکسالی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
Γ*ΨwΦPSIIChlPPFDFIAsRuBisCOTCWWUEFm′ - Fm 'aquaporin - آکواپورینWater use efficiency - بهره وری استفاده از آبDark respiration - تنفس تیرهAnatomical structure - ساختار آناتومیکChlorophyll - سبزینه یا کلروفیلCell wall thickness - ضخامت دیواره سلولیintercellular CO2 concentration - غلظت CO2 بین سلولیtranspiration rate - نرخ تنفسnet photosynthetic rate - نرخ فتوسنتزی خالصmesophyll conductance - هدایت مزوفیلStomatal conductance - هدایت گرمایشیLeaf water potential - پتانسیل آب برگCotton - کتانCarbonic anhydrase - کربونیک آنهیدراز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Drought slows net photosynthetic rate (AN) but increases water use efficiency (WUE). Farmers give an artificial drought pretreatment to some crops in the early growth stage and find that yield increases accompanying with the improvement of WUE. We conducted well-watered, non-drought, mild drought and moderate drought pretreatments of potted cotton cultivars. The aims of the present study were to analyse the importance of mesophyll conductance (gm) as a factor that may simultaneously improve AN and WUE under drought pretreatment conditions, and to analyse the role of anatomical structure and biochemical mechanism in the variability of gm. Our results showed that significant variability of gm estimated by gas exchange and chlorophyll fluorescence was observed between non-drought pretreatment and drought pretreatment associated with change in AN and WUE. There was great difference in anatomical structure and expression of aquaporins (GhAQP1) among all the treatments. In addition, expression of carbonic anhydrase (CA) may not be important in the regulation of gm under drought pretreatment conditions. We concluded that the variability of gm offers a potential target for improving leaf AN and WUE simultaneously by the regulation of anatomical structure and GhAQP1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 194, 1 May 2016, Pages 61-71
Journal: Journal of Plant Physiology - Volume 194, 1 May 2016, Pages 61-71
نویسندگان
Ji-Mei Han, Hao-Feng Meng, Sai-Yu Wang, Chuang-Dao Jiang, Feng Liu, Wang-Feng Zhang, Ya-Li Zhang,