کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10144886 | 1646317 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photosynthetic apparatus plays a central role in photosensitive physiological acclimations affecting spinach (Spinacia oleracea L.) growth in response to blue and red photon flux ratios
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کلمات کلیدی
NBTCATPPFDChlPFRASANPQCFLGSHNIRα-TGS/GOGATPODSLAAPXFWHMGC-MS - کروماتوگرافی گازی-طیف سنج جرمیWhite LED - LED سفیدPCA - PCAROS - ROSSOx - SOXnitroblue tetrazolium - tetrazolium nitroblueBlue - آبیAscorbic acid - آسکوربیک اسیدAlpha tocopherol - آلفا توکوفرولγ-aminobutyric acid - اسید γ-آمینوبوتیریکPrincipal component analysis - تحلیل مولفههای اصلی یا PCANitrogen assimilation - جذب نیتروژنNon-photochemical quenching - خنک سازی غیر فتوشیمیاییAntioxidant defense - دفاع آنتی اکسیدانLight-emitting diode (LED) - دیود (LED)light-emitting diode - دیود نورافشانsuperoxide radical - رادیکال سوپراکسیدLED - رهبریChlorophyll - سبزینه یا کلروفیلSOD - سدRED - سرخSpecific leaf area - سطح برگ مخصوصSuperoxide dismutase - سوکسوکس دیسموتازLength - طولfull width at half maximum - عرض کامل در نیمی از حداکثرPhotosynthesis - فتوسنتزphotosynthetic photon flux density - فتوسنتز تراکم شار فوتونinner diameter - قطر داخلیCAR - ماشینelectrolyte leakage - نشت الکترولیتBlue light - نور آبیnitrate reductase - نیترات ردوکتازNitrogen - نیتروژنnitrite reductase - نیتریت ردوکتازfresh weight - وزن ترdry weight - وزن خشکPeroxidase - پراکسیدازascorbate peroxidase - پراکسیداز آسکورباتیRed light - چراغ قرمزCatalase - کاتالازCarotenoid - کاروتنوئیدreduced glutathione - کاهش گلوتاتیونCarbon - کربنhigh-performance liquid chromatography - کروماتوگرافی مایعی کاراHPLC - کروماتوگرافی مایعی کاراGABA - گاباGas Chromatography-Mass Spectrometry - گاز کروماتوگرافی-اسپکترومتری جرمیglutathione reductase - گلوتاتیون ردوکتازReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Relative abundance of blue (B) and red (R) photons in the incident light plays a major role in regulating the morphology and physiology of plants. Many studies have been carried out to determine the R:B photon flux ratio (PFR) required for eliciting desired traits in various plant species. However, studies investigating the impact of R:B PFR on the underlying metabolic events and their mutual interactions are limited. In the present study, spinach (Spinacia oleracea L. cv. All Green) plants were raised in a plant growth chamber under R:B PFRs of 100R:0B, 75R:25B, 50R:50B, 25R:75B and 0R:100B provided by customized light-emitting diode (LED) panels. Data related to plant growth, status of photosynthetic apparatus, nitrogen metabolism, metabolite profile, oxidative stress and antioxidant defense response were collected. A putative mechanistic concept highlighting the interplay between photosynthesis, C- and N-assimilation and oxidative stress response in regulating plant growth under changing R:B PFR has been presented. Steady growth under B and R combined treatments was associated with high chlorophyll content, PSII quantum yield (Fv/Fm, Fv/Fo, ΦPSII) and vitality index (RFd) along with proper C- and N-assimilation. Reduction in non-photochemical quenching (NPQ) and oxidative stress was also observed under 25R:75B to 75R:25B light treatments. Subdued photosynthetic activity under deficiency of B waveband resulted in arrested growth due to suboptimal C- and N-assimilation. Monochromatic B lighting caused damage to the photosynthetic apparatus due to increased photooxidation. Presence of B photons was favorable for eliciting enzymatic and non-enzymatic antioxidant defense responses. However, the antioxidant machinery was unable to ameliorate the excessive oxidative damage under 0R:100B treatment resulting in suboptimal plant growth. Integrity and proper functionality of the photosynthetic apparatus under B and R combined light quality treatments was found to play a pivotal role in coordinating the non-photosynthetic light-sensitive metabolic processes in response to changing R:B PFR for ensuring proper plant growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 156, December 2018, Pages 170-182
Journal: Environmental and Experimental Botany - Volume 156, December 2018, Pages 170-182
نویسندگان
Avinash Agarwal, Snehasish Dutta Gupta, Monica Barman, Adinpunya Mitra,