دورية أكاديمية
Mono- and Digalactosyldiacylglycerol Lipids Function Nonredundantly to Regulate Systemic Acquired Resistance in Plants
| العنوان: | Mono- and Digalactosyldiacylglycerol Lipids Function Nonredundantly to Regulate Systemic Acquired Resistance in Plants |
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| المؤلفون: | Qing-ming Gao, Keshun Yu, Ye Xia, M.B. Shine, Caixia Wang, DuRoy Navarre, Aardra Kachroo, Pradeep Kachroo |
| المصدر: | Cell Reports, Vol 9, Iss 5, Pp 1681-1691 (2014) |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2014 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Biology (General), QH301-705.5 |
| الوصف: | Summary: The plant galactolipids monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) have been linked to the anti-inflammatory and cancer benefits of a green leafy vegetable diet in humans due to their ability to regulate the levels of free radicals like nitric oxide (NO). Here, we show that DGDG contributes to plant NO as well as salicylic acid biosynthesis and is required for the induction of systemic acquired resistance (SAR). In contrast, MGDG regulates the biosynthesis of the SAR signals azelaic acid (AzA) and glycerol-3-phosphate (G3P) that function downstream of NO. Interestingly, DGDG is also required for AzA-induced SAR, but MGDG is not. Notably, transgenic expression of a bacterial glucosyltransferase is unable to restore SAR in dgd1 plants even though it does rescue their morphological and fatty acid phenotypes. These results suggest that MGDG and DGDG are required at distinct steps and function exclusively in their individual roles during the induction of SAR. : The galactolipids monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) constitute ∼80% of total membrane lipids in plants. Gao et al. now show that these galactolipids function nonredundantly to regulate systemic acquired resistance (SAR). Furthermore, they show that the terminal galactose on the α-galactose-β-galactose head group of DGDG is critical for SAR. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2211-1247 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S2211124714009541Test; https://doaj.org/toc/2211-1247Test; https://doaj.org/article/508e82082dec4465a447595eaecbe0b3Test |
| DOI: | 10.1016/j.celrep.2014.10.069 |
| الإتاحة: | https://doi.org/10.1016/j.celrep.2014.10.069Test https://doaj.org/article/508e82082dec4465a447595eaecbe0b3Test |
| رقم الانضمام: | edsbas.B2778094 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 22111247 |
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| DOI: | 10.1016/j.celrep.2014.10.069 |