کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10841032 | 1067877 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential responses of lipid peroxidation and antioxidants in the leaves of drought-tolerant P. acutifolius Gray and drought-sensitive P. vulgaris L. subjected to polyethylene glycol mediated water stress
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کلمات کلیدی
DABAPOXMDAPhaseolus acutifoliusRWCNBTGSSGGDHGSHPhaseolus vulgarisCATPOXBSA - BSAnitroblue tetrazolium - tetrazolium nitrobluebovine serum albumin - آلبومین سرم گاوAntioxidants - آنتی اکسیدانEDTA - اتیلن دی آمین تترا استیک اسید ethylenediamine-N,N,N′,N′-tetraacetic acid - اتیلنیدامین N، N، N '، N'-tetraacetic اسیدAOS - بهWater stress - تنش آب یا بحران آبPar - توسطSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازmalondialdehyde - مالون دی آلدهیدRelative water content - محتوای آب نسبیfresh weight - وزن ترdry weight - وزن خشکascorbate peroxidase - پراکسیداز آسکورباتیPeroxidases - پراکسیدازهاLipid peroxidation - پراکسیداسیون لیپیدProline - پرولینpolyethylene glycol - پلی اتیلن گلیکولPEG - پلیاتیلن گلیکول Catalase - کاتالازreduced glutathione - کاهش گلوتاتیونoxidized glutathione - گلوتاتیون اکسید شدهglutathione reductase - گلوتاتیون ردوکتازglutamate dehydrogenase - گلوتامات دهیدروژنازactive oxygen species - گونه های اکسیژن فعال
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The changes in plant growth, relative water content (RWC), stomatal conductance, lipid peroxidation, proline and antioxidant system in relation to the tolerance to polyethylene glycol mediated water stress were investigated in drought-sensitive common bean P. vulgaris L. accession FM 53 and drought-tolerant tepary bean P. acutifolius Gray accession PI 321-638. For induction of water stress, the 35 days old bean seedlings were subjected to PEG 6000 of osmotic potential â0.40Â MPa for 14 days. With regard to vegetative growth, PEG treatment caused more decrease in P. vulgaris than in P. acutifolius indicating a superior performance of wild species under water stress. Root and shoot DW increased in P. acutifolius while decreased in P. vulgaris on day 14. PEG treatment had no effects on relative water content (RWC) in P. acutifolius but, reduced RWC in P. vulgaris. P. acutifolius maintained a greater stomatal conductance than P. vulgaris under water stress imposed by PEG treatment. In P. acutifolius constitutive level of lipid peroxidation was lower than in P. vulgaris and did not change at the end of the experiment. Constitutive activities of SOD, CAT, APOX and POX were higher in P. acutifolius than in the sensitive one and SOD, APOX and GR activities showed an enhancement in the former under water stress. Proline accumulation was also higher in P. acutifolius than in P. vulgaris both under control and water stress conditions. These results possibly suggest that the drought-tolerant tepary bean P. acutifolius showed a better protection mechanism against oxidative damage by maintaining higher constitutive and induced activities of antioxidant enzymes, than the sensitive common bean P. vulgaris.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 168, Issue 1, January 2005, Pages 223-231
Journal: Plant Science - Volume 168, Issue 1, January 2005, Pages 223-231
نویسندگان
Ä°smail Türkan, Melike Bor, Filiz Ãzdemir, Hulusi Koca,