کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8386661 1543850 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photosynthetic characteristics and metabolic analyses of two soybean genotypes revealed adaptive strategies to low-nitrogen stress
ترجمه فارسی عنوان
خصوصیات فتوسنتزی و تجزیه و تحلیل متابولیک دو ژنوتیپ سویا نشان داد که استراتژی های سازگار برای تنش کم آبی وجود دارد
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Nitrogen is an essential macronutrient for plants and the common limiting factor for crop productivity worldwide. An effective approach to combat N deficiency and overuse is to understand the mechanism of low-nitrogen tolerance in plants and develop low-nitrogen-tolerant crop cultivars. Wild soybean has a high tolerance to poor environmental conditions, but, until now, no study has illustrated the mechanism of low-nitrogen tolerance at a metabolomic level. In this study, the photosynthetic characteristics and metabolomics of wild and cultivated soybean seedlings were analyzed, and the mechanism of wild soybean's low-nitrogen tolerance was explained using a sand culture experiment. Wild soybean was less affected by low-nitrogen stress than cultivated soybean as assessed by plant growth parameters and photosynthesis. The root length of wild soybean increased, and a high root-shoot ratio was maintained under low-nitrogen stress. Carotenoids accumulated, which contributed to its higher low-nitrogen tolerance. A total of 48 and 60 differentially accumulated metabolites were identified in leaves and roots, respectively, between the low-nitrogen stress and control groups. The ability of wild soybean to tolerate low nitrogen also resulted from its capability to enhance the TCA cycle, synthesize key amino acids, accumulate metabolites, such as soluble sugars and organic acids, and synthesize favorable secondary metabolites under low-nitrogen stress. The current results reveal the mechanism underlying wild soybean's high low-nitrogen tolerance and provide the methodology and theoretical basis for utilizing wild soybean, improving cultivated soybean, and studying the low-nitrogen tolerance of other plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 229, October 2018, Pages 132-141
نویسندگان
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