کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10840129 | 1067570 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development and composition of the seeds of nine genotypes of the Medicago truncatula species complex
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کلمات کلیدی
Medicago truncatulaTAGraffinose family oligosaccharideC18:0SUCC18:3RFODAFGlcFRCC16:0 - C16: 0C18:1 - C18: 1C18:2 - C18: 2Stearate - استاراتAmino acids - اسید آمینه یا آمینو اسیدFatty acid - اسید چربFatty acids - اسیدهای چربOligosaccharides - الیگوساکارید هاOleate - اولیتهanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceSeed composition - ترکیب دانهTriacylglycerides - تریاسیل گلیسیریدSeed development - توسعه بذرdays after flowering - روز بعد از گلSucrose - ساکارزpalmitate - طلاییFructose - فروکتوز Linoleate - لینولئیتdry weight - وزن خشکStorage proteins - پروتئین ذخیره سازیGlucose - گلوکز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The seed development and composition of Medicago truncatula Gaertn., the new model plant for grain legumes, was studied using nine genotypes of the species complex: M. truncatula-Medicago littoralis (M. truncatula). The seed development of M. truncatula was very similar to that of other legumes, the only notable exception being the presence, in the mature seed, of an endosperm layer that is absent in grain legumes. During early embryogenesis and until mid-maturation, transient storage of starch occurred in the seed coat and embryo. This temporary storage probably contributed to the early development of the embryo and reserve synthesis. During maturation the synthesis and accumulation of proteins and oil took place at quasi-constant rates. Conversely oligosaccharides, mainly stachyose, were synthesised only during late maturation and at the beginning of desiccation. Proteins represented the major class of storage compounds and their average amino acid composition was found to be very close to that of pea and robust in various environmental conditions. Similar compositions between the two species and other grain legumes were also found for the fatty acids and the soluble sugars; most of these characters varied depending on the various environmental conditions used for seed production. All these similarities fully justify the use of M. truncatula as a model plant for genomic approaches to grain legume improvement. The major difference between M. truncatula seeds and European grain legume seeds resides in the nature of their carbon storage namely triacylglycerides for M. truncatula and starch for pea and faba bean.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 43, Issue 6, June 2005, Pages 557-566
Journal: Plant Physiology and Biochemistry - Volume 43, Issue 6, June 2005, Pages 557-566
نویسندگان
Nadia Djemel, Delphine Guedon, Arnaud Lechevalier, Christophe Salon, Martine Miquel, Jean-Marie Prosperi, Christine Rochat, Jean-Pierre Boutin,