نتایج جستجو برای: npr1
تعداد نتایج: 647 فیلتر نتایج به سال:
Plant defenses against pathogens and insects are regulated differentially by cross-communicating signal transduction pathways in which salicylic acid (SA) and jasmonic acid (JA) play key roles. In this study, we investigated the molecular mechanism of the antagonistic effect of SA on JA signaling. Arabidopsis plants unable to accumulate SA produced 25-fold higher levels of JA and showed enhance...
Activation of the natriuretic peptide system lowers blood pressure and causes the excretion of salt. Atrial natriuretic peptide and B-type natriuretic peptide are the humoral mediators of this effect; they act primarily by binding to membrane-bound natriuretic peptide receptor A (NPRA) and stimulating its intrinsic guanylate cyclase activity. To study whether genetically determined differences ...
Salicylic acid (SA) plays an important role in activating various plant defense responses, including expression of the pathogenesis-related (PR) genes and systemic acquired resistance. A critical positive regulator of the SA signaling pathway in Arabidopsis is encoded by the NPR1 gene. However, there is growing evidence that NPR1-independent pathways can also activate PR expression and disease ...
During the past ten years, a large body of circumstantial evidence has accumulated, implicating WRKY factors in transcriptional reprogramming during plant immune responses [1–3]. Encoded by complex gene families in higher plants [4], these transcription factors share a DNA-binding domain (WRKY domain) comprising approximately 60 amino acids [5]. Additional conserved features of WRKYs are limite...
NPR1 gene was transformed into Siraitia grosvenorii (Swingle) C. Jeffrey ex. A.M. Lu and Zhi Y. Zhang by germ cell in situ transformation. Ovary injection, cutting chapiter, and chapiter spreading treatments were applied in this study. The transgenic plants were selected using hygromycin screening and confirmed by PCR testing, genome integrated with NPR1 gene in transgenic plants was analyzed b...
جهت ایجاد نشانگرهای مولکولی مبتنی بر EST پیوسته با ژن‌های کنترل کننده مقاومت به FHB در گندم، عملکرد بیولوژیک 8660، EST موجود در بانک های اطلاعات مطالعه شد و 260، EST با عملکرد مشخص انتخاب شدند. در مجموع 62 جفت آغازگر با استفاده از نقاط حفظ شده و غیر حفظ شده طراحی شد. نتایج تجزیه پیوستگی و QTL با استفاده از داده‌های ژنوتیپی و فنوتیپی در نسل‌های 3F و 5F حاصل از تلاقی های فرونتانا (نیمه مقاوم) / ...
Transposon inactivation of Arabidopsis MAP kinase 4 produced the mpk4 mutant exhibiting constitutive systemic acquired resistance (SAR) including elevated salicylic acid (SA) levels, increased resistance to virulent pathogens, and constitutive pathogenesis-related gene expression shown by Northern and microarray hybridizations. MPK4 kinase activity is required to repress SAR, as an inactive MPK...
کشاورزی موفق نیازمند حفاظت گیاهان در مقابل تنش های زنده و غیرزنده است که موجب وارد شدن خسارات چشمگیری به گیاهان می شود. ازجمله این تنش ها، بیماری های گیاهی هستند. بنابراین انتقال ژن های مقاومت به گیاهان حساس از اهمیت بسیار بالایی برخوردار است. فاکتور رونویسی npr1 یک عامل کلیدی در مسیر پیام رسانی هورمون sa می باشد که با اتصال به پروموتور ژن های pr نقش خود را ایفا می کند و سبب القای مقاومت sar و ...
Salicylic acid (SA) is a key defense signal molecule against biotrophic and hemibiotrophic pathogens in plants, but how SA is synthesized in plant cells still remains elusive. Identification of new components involved in pathogen-induced SA accumulation would help address this question. To this end, we performed a large-scale genetic screen for mutants with altered SA accumulation during pathog...
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