کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8387379 | 1543893 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NaCl-induced physiological and biochemical adaptative mechanisms in the ornamental Myrtus communis L. plants
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کلمات کلیدی
POXRecovery capacitymonodehydroascorbate reductaseGSSGMDHARdehydroascorbate reductaseDHARAPXGSHASCLeaf anatomy - آناتومی برگGas exchange - تبادل گازOxidative stress - تنش اکسیداتیوWater relations - روابط آبSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازPeroxidase - پراکسیدازascorbate peroxidase - پراکسیداز آسکورباتیglutathione reductase - گلوتاتیون ردوکتازglutathione reduced form - گلوتاتیون فرم کاهش یافته است
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Physiological and biochemical changes in Myrtus communis L. plants after being subjected to different solutions of NaCl (44, and 88Â mM) for up to 30 days (Phase I) and after recovery from the salinity period (Phase II) were studied. Myrtle plants showed salinity tolerance by displaying a series of adaptative mechanisms to cope with salt-stress, including controlled ion homeostasis, the increase in root/shoot ratio, the reduction of water potentials and stomatal conductance to limit water loss. In addition, they displayed different strategies to protect the photosynthetic machinery, including limiting toxic ion accumulation in leaves, increase in chlorophyll content, and changes in chlorophyll fluorescence parameters, leaf anatomy and increases in catalase activity. Anatomical modifications in leaves, including a decrease in spongy parenchyma and increased intercellular spaces, allow CO2 diffusion in a situation of reduced stomatal aperture. In spite of all these changes, salinity produced oxidative stress in myrtle plants as monitored by increases in oxidative stress parameter values. The post-recovery period is perceived as a new stress situation, as observed through effects on plant growth and alterations in non-photochemical quenching parameters and lipid peroxidation values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 183, 1 July 2015, Pages 41-51
Journal: Journal of Plant Physiology - Volume 183, 1 July 2015, Pages 41-51
نویسندگان
José Ramón Acosta-Motos, Pedro Diaz-Vivancos, Sara Álvarez, Nieves Fernández-GarcÃa, MarÃa Jesús Sánchez-Blanco, José Antonio Hernández,