کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2826745 1162266 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Confronting Maxwell's demon: biophysics of xylem embolism repair
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Confronting Maxwell's demon: biophysics of xylem embolism repair
چکیده انگلیسی

Embolism results in a dramatic loss of xylem hydraulic transport capacity that can lead to decreased plant productivity and even death. The ability to refill embolized conduits despite the presence of tension in the xylem seems to be widespread, but how this occurs is not known. To promote discussion and future research on this topic, we describe how we believe refilling under tension might take place. Our scenario includes: (i) an osmotic role for low-molecular weight sugars; (ii) an apoplastic sugar-sensing mechanism to activate refilling; (iii) the contribution of vapor transport in both the influx of water and removal of entrapped gases; and (iv) the need for a mechanism that can synchronize reconnection to the transpiration stream through multiple bordered pits.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 14, Issue 10, October 2009, Pages 530–534
نویسندگان
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