کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8353384 | 1541896 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vulnerability of photosynthesis and photosystem I in Jerusalem artichoke (Helianthus tuberosus L.) exposed to waterlogging
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کلمات کلیدی
PSIIMDAΦPSIIPSIFv/Fm - Fv / FmROS - ROScarboxylation efficiency - بازده کربوکسیلینگImmunoblot analysis - تجزیه و تحلیل ایمونولوژیکPhotosynthetic rate - سرعت فتوسنتزیTuber yield - عملکرد گوشت خوکphotosystem I - عکس سیستم منPhotoinhibition - عکسبرداریintercellular CO2 concentration - غلظت CO2 بین سلولیPhotosystem II - فتوسیستم 2malondialdehyde - مالون دی آلدهیدstomatal limitation - محدودیت دیمنتStomatal conductance - هدایت گرمایشیReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Jerusalem artichoke (Helianthus tuberosus L.) is an important energy crop for utilizing coastal marginal land. This study was to investigate waterlogging tolerance of Jerusalem artichoke through photosynthetic diagnose with emphasis on photosystem II (PSII) and photosystem I (PSI) performance. Potted plants were subjected to severe (liquid level 5â¯cm above vermiculite surface) and moderate (liquid level 5â¯cm below vermiculite surface) waterlogging for 9 days. Large decreased photosynthetic rate suggested photosynthesis vulnerability upon waterlogging. After 7 days of severe waterlogging, PSII and PSI photoinhibition arose, indicated by significant decrease in the maximal photochemical efficiency of PSII (Fv/Fm) and PSI (â³MR/MR0), and PSI seemed more vulnerable because of greater decrease in â³MR/MR0 than Fv/Fm. In line with decreased â³MR/MR0 and unchanged Fv/Fm after 9 days of moderate waterlogging, the amount of PSI reaction center protein rather than PSII reaction center protein was lowered, confirming greater PSI vulnerability. According to positive correlation between â³MR/MR0 and efficiency that an electron moves beyond primary quinone and negative correlation between â³MR/MR0 and PSII excitation pressure, PSI inactivation elevated PSII excitation pressure by depressing electron transport at PSII acceptor side. Thus, PSI vulnerability induced PSII photoinhibition and endangered the stability of whole photosynthetic apparatus under waterlogging. In agreement with photosystems photoinhibition, elevated H2O2 concentration and lipid peroxidation in the leaves corroborated waterlogging-induced oxidative stress. In conclusion, Jerusalem artichoke is a waterlogging sensitive species in terms of photosynthesis and PSI vulnerability. Consistently, tuber yield was tremendously reduced by waterlogging, confirming waterlogging sensitivity of Jerusalem artichoke.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 125, April 2018, Pages 239-246
Journal: Plant Physiology and Biochemistry - Volume 125, April 2018, Pages 239-246
نویسندگان
Kun Yan, Shijie Zhao, Mingxing Cui, Guangxuan Han, Pei Wen,