检索结果-南通市图书馆

Field mold stress induced catabolism of storage reserves in soybean seed and the resulting deterioration of seed quality in the field

引用

Journal of Integrative Agriculture 2022年第2期21卷 336-350页

作者： DENG Jun-cai LI Xiao-man XIAO Xin-li WU Hai-jun YANG Cai-qiong LONG Xi-yang ZHANG Qi-hui Nasir IQBAL WANG Xiao-chun YONG Tai-wen DU Jun-bo YANG Feng LIU Wei-guo ZHANG Jing WU Xiao-ling WU Yu-shan YANG Wen-yu LIU Jiang Sichuan Engineering Research Center for Crop Strip Intercropping System/Key Laboratory of Crop Ecophysiology and Farming System in Southwest Ministry of Agriculture and Rural AffairsChengdu 611130P.R.China College of Agriculture Sichuan Agricultural UniversityChengdu 611130P.R.China Institute of Ecological Agriculture Sichuan Agricultural UniversityChengdu 611130P.R.China College of Horticulture Sichuan Agricultural UniversityChengdu 611130P.R.China School of Agriculture Food and WineThe University of AdelaideUrrbraeSA 5064Australia

Excessive rainfall provides a favorable condition for field mold infection of plants, which triggers field mold(FM) stress. If FM stress occurs during the late maturation stage of soybean seed, it negatively affects seed yield and quality. To investigate the responses of soybean seed against FM stress and identify the underlying biochemical pathways involved, a greenhouse was equipped with an artificial rain producing system to allow the induction of mold growth on soybean seed. The induced quality changes and stress responses were revealed on the levels of both transcriptome and metabolome. The results showed that soybean seeds produced under FM stress conditions had an abnormal and inferior appearance, and also contained less storage reserves, such as protein and polysaccharide. Transcriptional analysis demonstrated that genes involved in amino acid metabolism, glycolysis, tricarboxylic acid, β-oxidation of fatty acids, and isoflavone biosynthesis were induced by FM stress. These results were supported by a multiple metabolic analysis which exhibited increases in the concentrations of a variety of amino acids, sugars, organic acids, and isoflavones, as well as reductions of several fatty acids. Reprogramming of these metabolic pathways mobilized and consumed stored protein, sugar and fatty acid reserves in the soybean seed in order to meet the energy and substrate demand on the defense system, but led to deterioration of seed quality. In general, FM stress induced catabolism of storage reserves and diminished the quality of soybean seed in the field. This study provides a more profound insight into seed deterioration caused by FM stress.

关键词： seed deterioration seed quality primary metabolism storage reserves resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Variation of photosynthesis,secondary metabolites and antioxidant activities in third generation of spaceflight-induced Salvia miltiorrhiza

引用

Chinese Herbal Medicines 2022年第4期14卷 592-601页

作者： Liang Peng Mei Ru Zongsuo Liang College of Pharmacy Shaanxi University of Chinese MedicineXi’an 710000China College of Life Sciences and Medicine Zhejiang Sci-Tech UniversityHangzhou 310000China College of Life Sciences Northwest A&F UniversityYangling 712100China College of Pharmacy Guangxi University of Chinese MedicineNanning 530200China

Objective: Spaceflight has long been perceived as an effective way to improve the quantity and quality of plants with wide applications. In order to obtain stable and inheritable descendants of spaceflightinduced Salvia miltiorrhiza lines, we investigated and analyzed four lines m16, m50, m51, m57(three individuals of each line) and the ground control(three individuals) of the third generation of spaceflight-induced S. miltiorrhiza from primary/secondary metabolism and antioxidative ***: A portable photosynthesis system(Li-6400) with red/blue LED light source was used to perform the photosynthetic characteristics to evaluate their primary productivity. The secondary metabolites(phenolic acids, tanshinones, total phenolics and flavonoids) and antioxidant activity of roots were analyzed to assess their ***: Compared with control, line m16 presented weak photosynthetic ability, but high apparent quantum yield(AQY), higher contents of secondary metabolites, and stronger antioxidative *** m57 had a strong gas exchange ability, relatively higher secondary metabolites contents, and ascending antioxidative abilities. Lines m50 and m51 were in the middle level of lines m16 and *** principal component analysis for all the original data revealed three components including a rootrelated index, a leaf-related index, and a CO_(2) response parameter could be used to distinguish spaceflight-induced S. miltiorrhiza ***: Line m57 could be an appropriate material for the investigation of targeted breeding towards high production, and line m16 could be used to identify essential genes and unravel sophisticated pathways underlying the secondary metabolisms.

关键词： antioxidative ability Salvia miltiorrhiza Bge. secondary metabolism spaceflight third generation primary metabolism

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regulation of Sulfate Uptake and Assimilation——the Same or Not the Same？

引用

Molecular Plant 2010年第2期3卷 314-325页

作者： Jean-Claude Davidian Stanislav Kopriva Unite mixte de recherche Biochimie et Physiologie Molculaire des Plantes Montpellier SupAgro/CNRS/INRA/UM2 2 place Pierre Viala 34060 MontpellierCedex 2 France Department of Metabolic Biology John Innes Centre Norwich NR4 7UH UK

Plant take up the essential nutrient sulfur as sulfate from the soil, reduce it, and assimilate into bioorganic compounds, with cysteine being the first product. Both sulfate uptake and assimilation are highly regulated by the demand for the reduced sulfur, by availability of nutrients, and by environmental conditions. In the last decade, great prog- ress has been achieved in dissecting the regulation of sulfur metabolism. Sulfate uptake and reduction of activated sulfate, adenosine 5＇-phosphosulfate （APS）, to sulfite by APS reductase appear to be the key regulatory steps. Here, we review the current knowledge on regulation of these processes, with special attention given to similarities and differences.

关键词： Metabolic regulation nutrient and metal transport nutrition primary metabolism sulfate uptake sulfur metabolism.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent Progress in Deciphering the Biosynthesis of Aspartate-Derived Amino Acids in Plants

引用

Molecular Plant 2010年第1期3卷 54-65页

作者： Georg Jander Vijay Joshi Boyce Thompson Institute for Plant Research 1 Tower Road Ithaca NY 14850 USA

Plants are either directly or indirectly the source of most of the essential amino acids in animal diets. Four of these essential amino acids--methionine, threonine, isoleucine, and lysine--are all produced from aspartate via a well studied biosynthesis pathway. Given the nutritional interest in essential amino acids, the aspartate-derived amino acid pathway has been the subject of extensive research. Additionally, several pathway enzymes serve as targets for econom- ically important herbicides, and some of the downstream products are biosynthetic precursors for other essential plant metabolites such as ethylene and S-adenosylmethionine. Recent and ongoing research on the aspartate-derived family of amino acids has identified new enzyme activities, regulatory mechanisms, and in vivo metabolic functions. Together, these discoveries will open up new possibilities for plant metabolic engineering.

关键词： Metabolic regulation primary metabolism Arabidopsis.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Farnesylcysteine Lyase Regulation of Abscisic Arabidopsis is Involved in Negative Acid Signaling in

引用

Molecular Plant 2010年第1期3卷 143-155页

作者： David H. Huizinga Ryan Denton Kelly G. Koehler Ashley Tomasello Lyndsay Wood Stephanie E. Sen Dring N. Crowell Department of Biology Indiana University-Purdue University Indianapolis 723 West Michigan Street Indianapolis IN 46202 USA Department of Chemistry Indiana University-Purdue University Indianapolis 402 N. Blackford Street Indianapolis IN 46202 USA Department of Chemistry The College of New Jersey 2000 Pennington Road Ewing NJ 08628 USA Department of Biological Sciences Idaho State University 650 Memorial Drive Pocatello ID 83209 USA

The Arabidopsis FCLY gene encodes a specific farnesylcysteine （FC） lyase, which is responsible for the oxidative metabolism of FC to farnesal and cysteine. In addition, fcly mutants with quantitative decreases in FC lyase activity exhibit an enhanced response to ABA. However, the enzymological properties of the FCLY-encoded enzyme and its precise role in ABA signaling remain unclear. Here, we show that recombinant Arabidopsis FC lyase expressed in insect cells exhib- its high selectivity for FC as a substrate and requires FAD and molecular oxygen for activity. Arabidopsis FC lyase is also shown to undergo post-translational N-glycosylation. FC, which is a competitive inhibitor of isoprenylcysteine methyltransferase （ICMT）, accumulates in fcly mutants. Moreover, the enhanced response of fcly mutants to ABA is reversed by ICMToverexpression. These observations support the hypothesis that the ABA hypersensitive phenotype of fcly plants is the result of FC accumulation and inhibition of ICMT.

关键词： Hormone biology primary metabolism seed biology stomata membrane proteins Arabidopsis.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metabolic and Signaling Aspects Underpinning the Regulation of Plant Carbon Nitrogen Interactions

引用

Molecular Plant 2010年第6期3卷 973-996页

作者： Adriano Nunes-Nesi Alisdair R. Fernie Mark Stitt Max Planck Institute for Molecular Plant Physiology Am M~hlenberg 1 14476 Potsdam-Golm Germany

In addition to light and water, CO2 and mineral elements are required for plant growth and development. Among these factors, nitrogen is critical, since it is needed to synthesize amino acids, which are the building elements of protein, nucleotides, chlorophyll, and numerous other metabolites and cellular components. Therefore, nitrogen is required by plants in higher quantities and this investment in nitrogen supports the use of CO2, water, and inorganic nitrogen to produce sugars, organic acids, and amino acids, the basic building blocks of biomass accumulation. This system is maintained by complex metabolic machinery, which is regulated at different levels according to environmental factors such as light, CO2, and nutrient availability. Plants integrate these signals via a signaling network, which involves metabolites as well as nutrient-sensing proteins. Due to its importance, much research effort has been expended to understand how carbon and nitrogen metabolism are integrated and regulated according to the rates of photosynthesis, photorespiration, and respiration. Thus, in this article, we both discuss recent advances in carbon/nitrogen metabolisms as well as sensing and signaling systems in illuminated leaves of C3-plants and provide a perspective of the type of experiments that are now required in order to take our understanding to a higher level.

关键词： primary metabolism CN balance signaling.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sensing Sulfur Conditions： Simple to Complex Protein Regulatory Mechanisms in Plant Thiol metabolism

引用

Molecular Plant 2010年第2期3卷 269-279页

作者： Hankuil Yi Ashley Galant Geoffrey E. Ravilious Mary L. Preuss Joseph M. Jez Department of Biology Washington University One Brookings Drive Campus Box 1137 St Louis MO 63130 USA Donald Danforth Plant Science Center 975 North Warson Rd St Louis MO 63132 USA Department of Biological Sciences Webster University 470 East Lockwood Ave WEBH 9A Webster Groves MO 63119 USA

Sulfur is essential for plant growth and development, and the molecular systems for maintaining sulfur and thiol metabolism are tightly controlled. From a biochemical perspective, the regulation of plant thiol metabolism high- lights nature＇s ability to engineer pathways that respond to multiple inputs and cellular demands under a range of con- ditions. In this review, we focus on the regulatory mechanisms that form the molecular basis of biochemical sulfur sensing in plants by translating the intracellular concentration of sulfur-containing compounds into control of key metabolic steps. These mechanisms range from the simple （substrate availability, thermodynamic properties of reactions, feedback inhi- bition, and organelle localization） to the elaborate （formation of multienzyme complexes and thiol-based redox switches）. Ultimately, the dynamic interplay of these regulatory systems is critical for sensing and maintaining sulfur assimilation and thiol metabolism in plants.

关键词： Enzymology metabolic regulation primary metabolism protein structure.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

New Insights into the Shikimate and Aromatic Amino Acids Biosynthesis Pathways in Plants

引用

Molecular Plant 2010年第6期3卷 956-972页

作者： Vered Tzin Gad Galili Department of Plant Sciences The Weizmann Institute of Science Rehovot 76100 Israel

The aromatic amino acids phenylalanine, tyrosine, and tryptophan in plants are not only essential components of protein synthesis, but also serve as precursors for a wide range of secondary metabolites that are important for plant growth as well as for human nutrition and health. The aromatic amino acids are synthesized via the shikimate pathway followed by the branched aromatic amino acids biosynthesis pathway, with chorismate serving as a major intermediate branch point metabolite. Yet, the regulation and coordination of synthesis of these amino acids are still far from being understood. Recent studies on these pathways identified a number of alternative cross-regulated biosynthesis routes with unique evolutionary origins. Although the major route of Phe and Tyr biosynthesis in plants occurs via the intermediate metabolite arogenate, recent studies suggest that plants can also synthesize phenylalanine via the intermediate metabolite phenylpyruvate （PPY）, similarly to many microorganisms. Recent studies also identified a number of transcription factors regulating the expression of genes encoding enzymes of the shikimate and aromatic amino acids pathways as well as of multiple secondary metabolites derived from them in Arabidopsis and in other plant species. .

关键词： Carbon metabolism metabolomics metabolic regulation primary metabolism secondary metabolism-- phenylpropanoids and phenolics volatiles

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：