کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6309671 | 1307453 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential physiological, ultramorphological and metabolic responses of cotton cultivars under cadmium stress
ترجمه فارسی عنوان
واکنش های فیزیولوژیکی، فراشناختی و متابولیکی واکنش های ارقام پنبه تحت استرس کادمیوم
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کلمات کلیدی
CATMDAGossypium hirsutum L.APXPODROS - ROSHydrogen peroxide - آب اکسیژنهAntioxidants - آنتی اکسیدانUltrastructural changes - تغییرات فوقالعادهSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازtranslocation factor - عامل انتقالHeavy metals - فلزات سنگینmalondialdehyde - مالون دی آلدهیدH2O2 - هیدروژن پراکسیدascorbate peroxidase - پراکسیداز آسکورباتیCatalase - کاتالازCadmium - کادمیمguaiacol peroxidase - گوایاکول پراکسیدازReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Cadmium (Cd) stress may cause serious physiological, ultramorphological and biochemical anomalies in plants. Cd-induced physiological, subcellular and metabolic alterations in two transgenic cotton cultivars (BR001, GK30) and their parent line (Coker 312) were evaluated using 10, 100 and 1000 μM Cd. Germination, fresh biomass of roots, stems and leaves were significantly inhibited at 1000 μM Cd. Root volume tolerance index significantly increased (124.16%) in Coker 312 at 1000 μM Cd. In non-Cd stressed conditions, electron micrographs showed well-configured root meristem and leaf mesophyll cells. At 1000 μM Cd, greater ultramorphological alterations were observed in BR001 followed by GK30 and Coker 312. These changes were observed in nucleus, vacuoles, mitochondria and chloroplast. Dense precipitates, probably Cd, were seen in vacuoles, which were also attached to the cell walls. A considerable increase in number of nuclei, vacuoles, starch granules and plastoglobuli was observed in the electron micrographs of both roots and leaves at 1000 μM Cd. MDA contents were higher in roots of BR001 at 1000 μM Cd. Mean values of SOD activity in leaves of both BR001 and GK30 at 1000 μM Cd significantly increased as compared to the controls. POD activity in roots of BR001 and Coker 312 was greater at all Cd (10, 100, 1000 μM) levels over the control. Regarding APX, highest percent increase (71.64%) in roots of GK30 at 1000 μM Cd was found. Non-significant differences in CAT activity were observed at all levels of Cd stress in leaves of BR001 and GK30. Both transgenic cotton cultivars and their parental line invariably responded towards Cd stress. However, Coker 312 showed Cd-resistant behavior as compared to its progeny lines (BR001 and GK30).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 93, Issue 10, November 2013, Pages 2593-2602
Journal: Chemosphere - Volume 93, Issue 10, November 2013, Pages 2593-2602
نویسندگان
M.K. Daud, Shafaqat Ali, M.T. Variath, S.J. Zhu,