کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2015788 1541938 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An exogenous source of nitric oxide modulates zinc nutritional status in wheat plants
ترجمه فارسی عنوان
یک منبع خارجی از اکسید نیتریک، باعث تغذیه روی در گیاهان گندم می شود
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
چکیده انگلیسی


• Exogenous NO decreased Zn concentration in well-supplied wheat plants.
• During the recovery of Zn-deprivation, net Zn uptake rate was partially blocked by NO.
• NO modulates root-to-shoot translocation during the recovery of Zn-deprivation.

The effect of addition of the nitric oxide donor S-nitrosoglutathione (GSNO) on the Zn nutritional status was evaluated in hydroponically-cultured wheat plants (Triticum aestivum cv. Chinese Spring). Addition of GSNO in Zn-deprived plants did not modify biomass accumulation but accelerated leaf senescence in a mode concomitant with accelerated decrease of Zn allocation to shoots. In well-supplied plants, Zn concentration in both roots and shoots declined due to long term exposure to GSNO. A further evaluation of net Zn uptake rate (ZnNUR) during the recovery of long-term Zn-deprivation unveiled that enhanced Zn-accumulation was partially blocked when GSNO was present in the uptake medium. This effect on uptake was mainly associated with a change of Zn translocation to shoots. Our results suggest a role for GSNO in the modulation of Zn uptake and in root-to-shoot translocation during the transition from deficient to sufficient levels of Zn-supply.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 83, October 2014, Pages 337–345
نویسندگان
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