کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2018009 1067830 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acquisition or utilization, which is more critical for enhancing phosphorus efficiency in modern crops?
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Acquisition or utilization, which is more critical for enhancing phosphorus efficiency in modern crops?
چکیده انگلیسی

Phosphorus (P) is one of the major factors worldwide limiting crop growth. Enhancing P efficiency in plants can be achieved through improving P acquisition, utilization, or both. Which of these approaches is more critical for enhancing P efficiency in crops, particularly in intensive cropping systems? P availability is unevenly distributed through the soil profile. Most modern crop cultivars are selected through conventional breeding approaches for better adaptation to stratified soil P by root architectural and morphological traits that allow for more P acquisition from the P-rich soil surface zone. Conversely, most crops have relatively efficient P uptake capacity but low P translocation and remobilization. Hence, phosphorus utilization efficiency (PUE) becomes a significant bottleneck for further improvements in crop P efficiency. Furthermore, the modification of root systems requires additional carbon input, and thus crops might sacrifice carbohydrates for higher yield to meet demand for P acquisition. With the support from soybean transformation studies, we speculate that enhancement of PUE might become a potentially powerful strategy for increasing P efficiency in modern crops grown in intensive cropping systems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 179, Issue 4, October 2010, Pages 302–306
نویسندگان
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