کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2014799 | 1541922 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Responses of growth, antioxidants and gene expression in smooth cordgrass (Spartina alterniflora) to various levels of salinity
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کلمات کلیدی
ALDHparts per thousandPODLSDPEPCHspAPXPPTCATROS - ROSHydrogen peroxide - آب اکسیژنهaldehyde dehydrogenase - آلدئید دهیدروژنازAntioxidant - آنتی اکسیدانGene expression - بیان ژنSalt stress - تنش شوریleast significant difference - حداقل تفاوت قابل توجهیPhosphoenolpyruvate carboxylase - فسفوآنولپیروات کربوکسیلازHalophyte - هالوفیH2O2 - هیدروژن پراکسیدfresh weight - وزن ترPeroxidase - پراکسیدازascorbate peroxidase - پراکسیداز آسکورباتیHeat shock protein - پروتئین شوک حرارتGrass - چمنCatalase - کاتالازReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Responses of growth, antioxidants and gene expression in smooth cordgrass (Spartina alterniflora) to various levels of salinity Responses of growth, antioxidants and gene expression in smooth cordgrass (Spartina alterniflora) to various levels of salinity](/preview/png/2014799.png)
چکیده انگلیسی
Salinity is a major environmental factor limiting the productivity and quality of crop plants. While most cereal crops are salt-sensitive, several halophytic grasses are able to maintain their growth under saline conditions. Elucidating the mechanisms for salinity responses in halophytic grasses would contribute to the breeding of salt-tolerant cereal and turf species belonging to the Poaceae family. Smooth cordgrass (Spartina alterniflora) is a dominant native halophytic grass in the Hackensack Meadowlands, the coastal salt marshes located in northeastern New Jersey. The goals of this study were to examine the growth pattern of S. alterniflora in a salinity gradient and identify an optimal range of salinity for its maximal growth. The regulation of its antioxidant system and gene expression under supraoptimal salinity conditions was also investigated. Our results showed that a salinity of 4 parts per thousand (ppt) (68 mM) was most favorable for the growth of S. alterniflora, followed by a non-salt environment. S. alterniflora responded to salts in the environment by regulating antioxidant enzyme activities and the expression of stress-induced proteins such as ALDH, HVA22 and PEPC. The plant may tolerate salinity up to the concentration of sea water, but any salinity above 12 ppt retarded its growth and altered the expression of genes encoding critical proteins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 99, February 2016, Pages 162-170
Journal: Plant Physiology and Biochemistry - Volume 99, February 2016, Pages 162-170
نویسندگان
Abigail J. Courtney, Jichen Xu, Yan Xu,