کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8387211 | 1543883 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid recovery of photosynthetic rate following soil water deficit and re-watering in cotton plants (Gossypium herbaceum L.) is related to the stability of the photosystems
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کلمات کلیدی
ΨwROS metabolismΦPSIIPODETRASAquantum efficiency of PSIIAPXCATPSIIGSHMDAO2− - O2-ROS - ROSHydrogen peroxide - آب اکسیژنهAscorbic acid - آسکوربیک اسیدPhotosynthetically active radiation - تابش فعال فتوسنتزیPar - توسطRe-watering - دوباره آبیاریPhotochemical quenching - رفع عکس شیمیاییSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازPhotosynthesis - فتوسنتزPhotosystem II - فتوسیستم 2malonaldehyde - مالونالدئیدnet CO2 assimilation rate - میزان جذب CO2 خالصtranspiration rate - نرخ تنفسStomatal conductance - هدایت گرمایشیH2O2 - هیدروژن پراکسیدLeaf water potential - پتانسیل آب برگPeroxidase - پراکسیدازascorbate peroxidase - پراکسیداز آسکورباتیCatalase - کاتالازCotton - کتانWater deficit - کمبود آبGlutathione - گلوتاتیونReactive oxygen species - گونههای فعال اکسیژنY(I) - ی (ی)
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The responses of gas exchange, chlorophyll fluorescence and the anti-oxidative system of cotton leaves were studied during water deficit and recovery. The results show that water deficit led to a reversible reduction in the photosynthetic rate. This reduction was mainly accompanied by stomatal limitation. The activity of photosystem II (PSII) and photosystem I (PSI) was relatively stable during water deficit and recovery. Water deficit caused an enhanced production of reactive oxygen species (ROS) and increased lipid peroxidation. Proline accumulation and the anti-oxidative enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX) and peroxidase (POD), along with the antioxidant ascorbate (AsA), increased during water deficit. On re-watering, the ROS generation rate, anti-oxidative enzymes activities and the extent of the lipid peroxidation returned to near control values. Overall, rapid recovery of the photosynthetic rate is related to the stability of the photosystems which appears to be a critical mechanism allowing cotton plants to withstand and survive drought environments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 194, 1 May 2016, Pages 23-34
Journal: Journal of Plant Physiology - Volume 194, 1 May 2016, Pages 23-34
نویسندگان
Xiao-Ping Yi, Ya-Li Zhang, He-Sheng Yao, Hong-Hai Luo, Ling Gou, Wah Soon Chow, Wang-Feng Zhang,