کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2050945 | 1074186 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chloroplast nitrite uptake is enhanced in Arabidopsis PII mutants
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chloroplast nitrite uptake is enhanced in Arabidopsis PII mutants Chloroplast nitrite uptake is enhanced in Arabidopsis PII mutants](/preview/png/2050945.png)
چکیده انگلیسی
In higher plants, the PII protein is a nuclear-encoded plastid protein that regulates the activity of a key enzyme of arginine biosynthesis. We have previously observed that Arabidopsis PII mutants are more sensitive to nitrite toxicity. Using intact chloroplasts isolated from Arabidopsis leaves and 15N-labelled nitrite we show that a light-dependent nitrite uptake into chloroplasts is increased in PII knock-out mutants when compared to the wild-type. This leads to a higher incorporation of 15N into ammonium and amino acids in the mutant chloroplasts. However, the uptake differences do not depend on GS/GOGAT activities. Our observations suggest that PII is involved in the regulation of nitrite uptake into higher plant chloroplasts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 582, Issue 7, 2 April 2008, Pages 1061–1066
Journal: FEBS Letters - Volume 582, Issue 7, 2 April 2008, Pages 1061–1066
نویسندگان
Sylvie Ferrario-Méry, Christian Meyer, Michael Hodges,