کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8887049 | 1628029 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Functional deficiency of phytochrome B improves salt tolerance in rice
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کلمات کلیدی
T-DNACBFAP2NBTbZIPPIFDREBPHYBNaClHKTPILABANa+/K+ ratioDABTransfer-DNANa+ - Na +ROS - ROSApetala 2 - آپتال 2abscisic acid - اسید آبسزیکRice (Oryza sativa L.) - برنج (Oryza sativa L.)nitroblue tetrazolium chloride - تترازولیم کلرید nitroblueSalt stress - تنش شوریdiaminobenzidine - دیامینو بنزیدینbasic leucine zipper - زیپ پایه لوسینSodium - سدیم Sodium chloride - سدیم کلریدTranscription factor - عامل رونویسیphytochrome B - فیتوکروم BMyb - مبینmyeloblastosis - میلوللاستوزwild type - نوع وحشیPotassium - پتاسیمReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Soil degradation affects agriculture worldwide. Soils with high salt can result from local geological conditions or accumulation of salt from irrigation. Salt limits water uptake and reduces crop yields; therefore, salt tolerance is an important trait for crops grown in high-salt soils. Here, we show that the rice (Oryza sativa) phytochrome B (osphyB) mutant has greater tolerance to salt stress than its parent japonica rice (cv. Dongjin). We found that the osphyB mutant showed a higher survival rate, fresh weight, and levels of total chlorophylls and carotenoids, as well as enhanced membrane integrity under salt stress compared to the wild type. OsPHYB transcripts increased in tissues of the wild type after salt treatment; OsPHYB expression was much higher in the leaf blade than in the stem and root. The osphyB mutant accumulated less Na+ in the shoot and considerably more K+ in both the shoot and root, maintaining a significantly lower Na+ to K+ ratio, possibly due to a lower rate of Na+ uptake and a higher rate of K+ uptake. To elucidate the possible mechanism of salt tolerance in the osphyB mutant, we performed quantitative reverse transcription PCR analysis, which indicated that salt stress-associated genes, including transcription factors and high-affinity K+ transporters, are upregulated in the osphyB mutant under high-salinity conditions. Taken together, our findings show that the null mutation of OsPHYB contributes to a decrease in the Na+/K+ ratio and enhances cell membrane integrity through upregulation of salt stress-associated genes, resulting in improved tolerance to salt stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 148, April 2018, Pages 100-108
Journal: Environmental and Experimental Botany - Volume 148, April 2018, Pages 100-108
نویسندگان
Choon-Tak Kwon, Giha Song, Suk-Hwan Kim, Jaehyuk Han, Soo-Cheul Yoo, Gynheung An, Kiyoon Kang, Nam-Chon Paek,