دورية أكاديمية
Natural variation in iron use efficiency and mineral remobilization in cucumber ( Cucumis sativus )
| العنوان: | Natural variation in iron use efficiency and mineral remobilization in cucumber ( Cucumis sativus ) |
|---|---|
| المؤلفون: | Waters, Brian M., Troupe, Grace |
| المصدر: | Agronomy & Horticulture -- Faculty Publications |
| بيانات النشر: | DigitalCommons@University of Nebraska - Lincoln |
| سنة النشر: | 2012 |
| المجموعة: | University of Nebraska-Lincoln: DigitalCommons@UNL |
| مصطلحات موضوعية: | iron uptake, iron use efficiency, remobilization, senescence, Agricultural Science, Agriculture, Agronomy and Crop Sciences, Botany, Horticulture, Life Sciences, Other Plant Sciences, Plant Biology, Plant Sciences |
| الوصف: | Aims: Iron (Fe) is an essential micronutrient, and plant-available Fe is often limited in alkaline soils. Fe deficiency chlorosis decreases plant growth and yield. Identification of germplasm with high and low Fe use efficiency will allow studies to better understand the genetic components for breeding Fe efficient varieties. Methods: A screen using cucumber (Cucumis sativus) seedlings identified varieties that maintained contrasting levels of chlorophyll under Fe deficiency or limitation. A time course of mineral dynamics in cotyledons was conducted. Results: The variety Ashley had the highest chlorophyll under Fe deficiency and per unit Fe in the leaf, while the variety Miniature White had the lowest. Ashley also maintained higher chlorophyll when challenged with low Fe or bicarbonate, accumulated greater quantities of Fe, and had higher root ferric reductase activity. Cotyledons accumulated minerals for the first several days, then Fe, P, K, and Cu were remobilized. The Fe use efficient and inefficient varieties remobilized Fe and P on different timescales. Conclusions: Our results suggest that this screen can identify varieties for systems level studies that could elucidate factors needed for Fe use efficiency and remobilization of minerals. The time course indicated that cotyledon Fe stores did not contribute to seedling Fe use efficiency. Includes supplementary materials. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| العلاقة: | https://digitalcommons.unl.edu/agronomyfacpub/831Test; https://digitalcommons.unl.edu/context/agronomyfacpub/article/1831/viewcontent/Waters_2012_PS_Natural_variation__DC_VERSION.pdfTest |
| الإتاحة: | https://digitalcommons.unl.edu/agronomyfacpub/831Test https://digitalcommons.unl.edu/context/agronomyfacpub/article/1831/viewcontent/Waters_2012_PS_Natural_variation__DC_VERSION.pdfTest |
| رقم الانضمام: | edsbas.24D988E2 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |