نتایج جستجو برای: mir398

تعداد نتایج: 64  

Journal: :The Plant journal : for cell and molecular biology 2010
Linda Beauclair Agnès Yu Nicolas Bouché

microRNA398 (miR398) is a conserved miRNA of plants that targets two of the three copper/zinc superoxide dismutases (SOD) of Arabidopsis (CSD1 and CSD2) by triggering cleavage or inhibiting translation of their mRNAs. We analysed the transcriptomes of mutants impaired in miR398 production, and found that the mRNAs encoding the copper chaperone for superoxide dismutase (CCS1), which delivers cop...

2013
Assyl Bari Olga Berillo Saltanat Orazova Anatoliy Ivashchenko

Among all microRNAs (miRNAs) in 12 plant species investigated in this study, only miR398 targeted the copper chaperone for superoxide dismutase (CCS). The nucleotide sequences of miRNA binding sites were located in the mRNA protein-coding sequence (CDS) and were highly homologous. These binding sites in CCS mRNA encoded a conservative GDLGTL hexapeptide. The binding sites for miR398 in the CDS ...

Journal: :The Plant cell 2006
Ramanjulu Sunkar Avnish Kapoor Jian-Kang Zhu

MicroRNAs (miRNAs) are a class of regulatory RNAs of approximately 21 nucleotides that posttranscriptionally regulate gene expression by directing mRNA cleavage or translational inhibition. Increasing evidence points to a potential role of miRNAs in diverse physiological processes. miR398 targets two closely related Cu/Zn superoxide dismutases (cytosolic CSD1 and chloroplastic CSD2) that can de...

Journal: :The Journal of biological chemistry 2007
Hiroaki Yamasaki Salah E Abdel-Ghany Christopher M Cohu Yoshichika Kobayashi Toshiharu Shikanai Marinus Pilon

Major copper proteins in the cytoplasm of plant cells are plastocyanin, copper/zinc superoxide dismutase, and cytochrome c oxidase. Under copper limited conditions, expression of copper/zinc superoxide dismutase is down-regulated and the protein is replaced by iron superoxide dismutase in chloroplasts. We present evidence that a micro-RNA, miR398, mediates this regulation in Arabidopsis thalian...

2014
Cécile Brousse Qikun Liu Linda Beauclair Aurélie Deremetz Michael J. Axtell Nicolas Bouché

Plant microRNAs (miRNAs) typically form near-perfect duplexes with their targets and mediate mRNA cleavage. Here, we describe an unconventional miRNA target of miR398 in Arabidopsis, an mRNA encoding the blue copper-binding protein (BCBP). BCBP mRNA carries an miR398 complementary site in its 5'-untranslated region (UTR) with a bulge of six nucleotides opposite to the 5' region of the miRNA. De...

Journal: :The Plant cell 2009
Hiroaki Yamasaki Makoto Hayashi Mitsue Fukazawa Yoshichika Kobayashi Toshiharu Shikanai

Expression of miR398 is induced in response to copper deficiency and is involved in the degradation of mRNAs encoding copper/zinc superoxide dismutase in Arabidopsis thaliana. We found that SPL7 (for SQUAMOSA promoter binding protein-like7) is essential for this response of miR398. SPL7 is homologous to Copper response regulator1, the transcription factor that is required for switching between ...

Journal: :Agrobiodiversity for improving nutrition, health and life quality 2022

Gladiolus as economically important flowering plants reflect the wide range of morphological variability inflorescences. The aim current gladiolus breeders is to create interesting new genotypes by different breeding techniques, carrying a variety colour, size, texture and shapes flowers Despite well-established characterization germplasm, genomic screening functional markers can provide useful...

2015
Elva C. Chávez-Hernández Naholi D. Alejandri-Ramírez Vasti T. Juárez-González Tzvetanka D. Dinkova

Maize somatic embryogenesis (SE) is induced from the immature zygotic embryo in darkness and under the appropriate hormones' levels. Small RNA expression is reprogrammed and certain miRNAs become particularly enriched during induction while others, characteristic to the zygotic embryo, decrease. To explore the impact of different environmental cues on miRNA regulation in maize SE, we tested spe...

ژورنال: :فصلنامه علمی ـ پژوهشی زیست فناوری گیاهان زراعی 2014
ریحانه ابراهیمی بهروز شیران اسماعیل ابراهیمی حسین فلاحی

micrornaها، rnaهایی کوچک به طول تقریبی 21-22 نوکلئوتید هستند که توسط ژنوم موجود کد شده، هیچ نوع پروتئینی را کد نمی کنند و به عنوان تنظیم کننده¬های منفی بیان ژن در مرحله پس از رونویسی در گیاهان و جانوران شناخته شده¬اند. دما یکی از مهم¬ترین فاکتورهای آب و هوایی موثر بر کشاورزی محسوب می¬شود و دمای بالا اثرات نامساعدی بر رشد، نمو و عملکرد محصولات زراعی گیاهان می¬گذارد. در این پژوهش الگوی بیانmir398...

ژورنال: :زیست فناوری گیاهان زراعی 0
ریحانه ابراهیمی دانشگاه شهرکرد بهروز شیران دانشگاه شهرکرد اسماعیل ابراهیمی هیات علمی / دانشگاه شیراز حسین فلاحی هیات علمی/دانشگاه رازی کرمانشاه

micrornaها، rnaهایی کوچک به طول تقریبی 21-22 نوکلئوتید هستند که توسط ژنوم موجود کد شده، هیچ نوع پروتئینی را کد نمی کنند و به عنوان تنظیم کننده¬های منفی بیان ژن در مرحله پس از رونویسی در گیاهان و جانوران شناخته شده¬اند. دما یکی از مهم¬ترین فاکتورهای آب و هوایی موثر بر کشاورزی محسوب می¬شود و دمای بالا اثرات نامساعدی بر رشد، نمو و عملکرد محصولات زراعی گیاهان می¬گذارد. در این پژوهش الگوی بیانmir398...

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