Effects of Salinity on Chlorophyll Fluorescence of Nitrogen Fixing Soybean Plants (Glycine max L.)

2010 ◽  
Author(s):  
Ilko Ts. Iliev ◽  
Dora D. Krezhova ◽  
Tony K. Yanev ◽  
Elisaveta B. Kirova ◽  
Angelos Angelopoulos ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Glycine Max ◽  
Nitrogen Fixing ◽  
Glycine Max L ◽  
Soybean Plants

Effects of Salinity on Leaf Spectral Reflectance and Biochemical Parameters of Nitrogen Fixing Soybean Plants (Glycine max L.)

2010 ◽  
Author(s):  
Dora D. Krezhova ◽  
Elisaveta B. Kirova ◽  
Tony K. Yanev ◽  
Ilko Ts. Iliev ◽  
Angelos Angelopoulos ◽  
...  
Keyword(s):  
Glycine Max ◽  
Spectral Reflectance ◽  
Biochemical Parameters ◽  
Nitrogen Fixing ◽  
Glycine Max L ◽  
Leaf Spectral Reflectance ◽  
Soybean Plants

scholarly journals Elucidating the effects of TiO2 nanoparticles on the toxicity and accumulation of Cu in soybean plants (Glycine max L.)

2021 ◽  
Vol 219 ◽  
pp. 112312
Author(s):  
Yinlong Xiao ◽  
Ying Du ◽  
Yue Xiao ◽  
Xiaohong Zhang ◽  
Jun Wu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Tio2 Nanoparticles ◽  
Glycine Max L ◽  
Soybean Plants

scholarly journals Quantitative Proteomics Reveals that GmENO2 Proteins Are Involved in Response to Phosphate Starvation in the Leaves of Glycine max L.

2021 ◽  
Vol 22 (2) ◽  
pp. 920
Author(s):  
Ling Cheng ◽  
Wanling Min ◽  
Man Li ◽  
Lili Zhou ◽  
Chuan-Chih Hsu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Molecular Mechanisms ◽  
Human Life ◽  
Phosphate Starvation ◽  
Limiting Factor ◽  
Transcriptional Level ◽  
Label Free ◽  
Promoter Regions ◽  
Glycine Max L ◽  
Soybean Plants

Soybean (Glycine max L.) is a major crop providing important source for protein and oil for human life. Low phosphate (LP) availability is a critical limiting factor affecting soybean production. Soybean plants develop a series of strategies to adapt to phosphate (Pi) limitation condition. However, the underlying molecular mechanisms responsible for LP stress response remain largely unknown. Here, we performed a label-free quantification (LFQ) analysis of soybean leaves grown under low and high phosphate conditions. We identified 267 induced and 440 reduced differential proteins from phosphate-starved leaves. Almost a quarter of the LP decreased proteins are involved in translation processes, while the LP increased proteins are accumulated in chlorophyll biosynthetic and carbon metabolic processes. Among these induced proteins, an enolase protein, GmENO2a was found to be mostly induced protein. On the transcriptional level, GmENO2a and GmENO2b, but not GmENO2c or GmENO2d, were dramatically induced by phosphate starvation. Among 14 enolase genes, only GmENO2a and GmENO2b genes contain the P1BS motif in their promoter regions. Furthermore, GmENO2b was specifically induced in the GmPHR31 overexpressing soybean plants. Our findings provide molecular insights into how soybean plants tune basic carbon metabolic pathway to adapt to Pi deprivation through the ENO2 enzymes.

scholarly journals Aspectos Bionômicos de Spodoptera eridania (Cramer): Uma Praga em Expansão na Cultura da Soja na Região do Cerrado Brasileiro

2014 ◽  
Vol 7 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Bruno Henrique Sardinha de Souza ◽  
Eduardo Neves Costa ◽  
Anderson Gonçalves da Silva ◽  
Arlindo Leal Boiça Júnior
Keyword(s):  
International Trade ◽  
Glycine Max ◽  
Insect Pests ◽  
High Yield ◽  
Spodoptera Eridania ◽  
Soybean Crop ◽  
Glycine Max L ◽  
Midwest Region ◽  
Soybean Plants ◽  
Economical Losses

A soja, Glycine max (L.) Merril, é uma das culturas de maior importância econômica para o Brasil, considerada uma commodity nacional devido à sua alta produtividade e participação nas exportações no mercado internacional. Dentre os insetos-pragas que causam danos para essa cultura, nos últimos anos agrícolas têm merecido destaque as lagartas de Spodoptera eridania (Cramer), as quais podem se alimentar tanto de folhas quanto das vagens das plantas de soja, causando prejuízos econômicos para os sojicultores, principalmente nas áreas do Cerrado localizadas na região Centro-Oeste do país. O objetivo da presente revisão é disponibilizar informações sobre os aspectos bionômicos de S. eridania, a fim de dar subsídios para futuras pesquisas sobre o manejo dessa praga.Bionomic Aspects of Spodoptera eridania (Cramer): A Pest in Expansion on Soybean Crop in the Region of Brazilian CerradoAbstract. Soybean, Glycine max (L.) Merril, represents one of the major economically important crops to Brazil, and is considered a national commodity because of its high yield and participation in international trade exportations. Among the insect pests that cause damage to this crop, Spodoptera eridania (Cramer) larvae highlighted in the last agricultural seasons by feeding on leaves and pods of soybean plants, and hence causing economical losses to soybean growers, especially in the Cerrado areas located in the Midwest region of the country. We aimed with this review to provide information about bionomical aspects of S. eridania in order to give subsides for further researches on the management of this pest.

scholarly journals Distribution of eggs, larvae and adults of Sternechus subsignatus Boheman on soybean plants in no-till system

1998 ◽  
Vol 27 (4) ◽  
pp. 513-518 ◽  
Author(s):  
Mauro T. B. Silva ◽  
Nelson Neto ◽  
Clara B. Hoffmann-Campo
Keyword(s):  
Glycine Max ◽  
Rio Grande ◽  
Sampling Time ◽  
Rio Grande Do Sul ◽  
No Till ◽  
Glycine Max L ◽  
Soybean Plants ◽  
Lateral Branches ◽  
Upper Third ◽  
Eggs And Larvae

Soybean [(Glycine max (L.) Merrill] commercial fields, maintained under a no-till system, were sampled during the crop seasons 1990/91 and 1996/97, in Cruz Alta and Júlio de Castilhos, Rio Grande do Sul State, to determine the distribution of eggs, larvae and adults of Sternechus subsignatus Boheman (Coleoptera : Curculionidae). Soybean plants and soil were examined at different time schedules. Eggs and larvae were recorded in main stems, lateral branches and leaf petioles, divided into the upper third, medium and lower third of soybean plants. Eggs (87%), and larvae (79%) were mainly observed in the main stem and in the medium plant sections (87% and 78%, respectively). Larval movement was not observed because larvae remained inside the galls, in the same area where the eggs were laid. Adults were located in different places depending on the sampling time. At night, adults were observed to move to the upper third of the plant and, during the day, down to the lower third of the plant and to the soil. The insects are normally concealed during their pre- and post- embryonic stage throughout most of the day.

Salinity stress phenotyping for soybean (Glycine max L.) for Middle East Asia

2018 ◽  
Author(s):  
Faheema Khan
Keyword(s):  
Chlorophyll Fluorescence ◽  
Glycine Max ◽  
Antioxidant Enzyme ◽  
Salinity Stress ◽  
Nacl Stress ◽  
Salt Tolerant ◽  
Ros Scavenging ◽  
Soybean Genotype ◽  
Fluorescence Measurements ◽  
Glycine Max L

The present study was conducted to evaluate the differences in photosynthetic parameters and antioxidant enzyme activity among two genotypes of soybean (Glycine max L.) in response to salinity stress. Ten-day-old seedlings, grown hydroponically, were treated with 0, 25, 50, 75, 100, 125 and 150 mM NaCl for 7 days and analysed for the traits as biomarkers for identification of salt-tolerant soybean genotype. It was observed that NaCl stress caused severe impairments in photosynthetic rate, chlorophyll fluorescence and chlorophyll content in both the genotypes, but the damage were much more pronounced in salt-sensitive genotype VL SOYA-47. Moreover, chlorophyll fluorescence measurements showed higher non-photochemical quenching in genotype VL SOYA-47 and lower in genotype VL SOYA-21. The antioxidant enzyme activities (superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase) was observed much higher in VL SOYA-21 than in VL SOYA-47 at various levels of NaCl treatments. From the results, it could be suggested that VL SOYA-21 is the salt tolerant and VL SOYA-47 is a salt sensitive soybean genotype. The tolerance capacity of VL SOYA-21 against NaCl stress can be related with the ability of this genotype in possessing vital photosynthetic system and ROS scavenging capacity.

Curled root hairs are a site of entry for Bradyrhizobium infecting hydroponically grown soybean plants with mature root systems

1988 ◽  
Vol 66 (4) ◽  
pp. 683-686 ◽  
Author(s):  
Jeanne M. L. Selker ◽  
John Imsande ◽  
Eldon H. Newcomb
Keyword(s):  
Glycine Max ◽  
Root Hair ◽  
Bradyrhizobium Japonicum ◽  
Root Hairs ◽  
Root Systems ◽  
Glycine Max L ◽  
Soybean Plants ◽  
A Site ◽  
Hydroponically Grown ◽  
Mature Root

Early emergent nodules on roots of hydroponically grown soybean plants (Glycine max (L.) Merr.) were sectioned serially to locate the site of infection by Bradyrhizobium japonicum. The plants had been inoculated only after their root systems had produced numerous higher order branches. The hydroponic solutions contained all required nutrients, including either a suboptimal concentration of nitrate (0.5 mM) or an excess of nitrate (4.0 mM). In all six nodules examined, three with suboptimal nitrate and three with excess nitrate, we found a centrally located root hair containing an infection thread. We conclude that mature root systems of soybean grown in aqueous culture can undergo infection through root hairs in the way that is typical of young seedlings grown either in pots of vermiculite or pouches.

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