Induction of high affinity phosphate transporter in the duckweed Spirodela oligorrhiza
نویسندگان
چکیده
منابع مشابه
Isolation and Characterization of Chloroplast DNA from the Duckweed Spirodela oligorrhiza.
Chloroplast DNA of the duckweed Spirodela oligorrhiza, isolated by CsCl gradient centrifugation, was characterized by its buoyant density, guanine + cytosine content, melting behavior, circularity, and contour length. In all these characteristics, chloroplast DNA of S. oligorrhiza is similar to the chloroplast genomes of other higher plants, except that it has a significantly larger size.
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The duckweed Spirodela oligorrhiza, growing in sterile defined nutrient media, was used to study some responses of plants to phosphorus deficiency. On a phosphate-deficient medium, growth of Spirodela soon slowed and eventually ceased. Older leaves became chlorotic, but newly formed leaves were dark green and contained much anthocyanin. The photosynthesis rate fell gradually, roots elongated, a...
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We have undertaken an analysis of the inositol phosphates of Spirodela polyrhiza at a developmental stage when massive accumulation of InsP6 indicates that a large net synthesis is occurring. We have identified Ins3P, Ins(1,4)P2, Ins(3,4)P2 and possibly Ins(4,6)P2, Ins(3,4,6)P3, Ins(3,4,5,6)P4, Ins (1,3,4,5,6)P5, D- and/or L-Ins(1,2,4,5,6)P5 and InsP6 and revealed the likely presence of a secon...
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Legume biological nitrogen (N) fixation is the most important N source in agroecosystems, but it is also a process requiring a considerable amount of phosphorus (P). Therefore, developing legume varieties with effective N(2) fixation under P-limited conditions could have profound significance for improving agricultural sustainability. We show here that inoculation with effective rhizobial strai...
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چکیده ارتباط در کلاس به عوامل زیادی از جمله معلمان، دانش آموزان، برنامه های درسی و از همه مهم تر، مواد آموزشی وابسته است. در تدریس ارتباطی زبان که تاکید زیادی بر توانش ارتباطی دارد، کتاب درسی به عنوان عامل موثر بر پویایی کلاس محسوب میگردد که درس ها را از طریق فراهم آوردن متن ارتباط کلاسی و هم چنین نوع تمرین زبانی که دانش آموزان در طول فعالیت های کلاسی به آن مشغول اند، کنترل می کند. این حقیقت ک...
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ژورنال
عنوان ژورنال: Physiologia Plantarum
سال: 2004
ISSN: 0031-9317,1399-3054
DOI: 10.1111/j.0031-9317.2004.0231.x