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 Curtobacterium flaccumfaciens pv. flaccumfaciens na cultura da soja: importância e manejo

2021 ◽  
Vol 24 (5-esp.) ◽  
pp. 552-559
Author(s):  
Jacqueline Dalbelo Puia ◽  
Adriano Thibes Hoshino ◽  
Leandro Camargo Borsato ◽  
Marcelo Giovanetti Canteri ◽  
Sandra Cristina Vigo
Keyword(s):  
Glycine Max ◽  
New Technologies ◽  
Control Strategies ◽  
Integrated Management ◽  
Tan Spot ◽  
Limiting Factors ◽  
Soybean Crop ◽  
Best Management ◽  
Glycine Max L ◽  
Soybean Plants

A soja (Glycine max L.) é principal cultura do agronegócio brasileiro e tornou-se a mais expressiva economicamente no país, tanto pelo aumento da área cultivada quanto pelas novas tecnologias disponibilizadas aos produtores. As doenças podem ter origens fúngicas, bacterianas e viróticas e neste estudo destaca-se a murcha-de-Curtobacterium, causada pela bactéria gram-positiva Curtobacterium flaccumfaciens pv. flaccumfaciens. O sintoma é caracterizado por uma mancha bacteriana marrom nas folhas de soja. O objetivo do trabalho foi expor os aspectos do patógeno C. flaccumfaciens pv. flaccumfaciens na cultura da soja, discutindo as principais estratégias de controle para minimizar os problemas com a doença. Deve-se ressaltar que, ao obter conhecimento sobre os aspectos agronômicos e os fatores limitantes da cultura da soja em relação à bactéria e seus principais aspectos biológicos, será possível a adoção das melhores técnicas de manejo da doença. Conclui-se que a busca por cultivares resistentes é de extrema importância no manejo da doença, uma vez que outros métodos de controle são pouco eficientes. Para alcançar o controle da mancha bacteriana marrom na cultura da soja é necessário a adoção conjunta de todas as técnicas de controle empregadas de forma unificada (manejo integrado da doença) visando a manutenção da população de C. flaccumfaciens pv. flaccumfaciens em baixos níveis.   Palavras-chave: Mancha Bacteriana Marrom. Controle de Doenças. Glycine max L. Distribuição.   Abstract Soybean (Glycine max L.), is the main crop of Brazilian agribusiness, it has become the most economically important in the country, both due to the increase in cultivated area and the new technologies available to farmers. Diseases can have several origins, including fungal, bacterial and virotic, but in this study, we will talk about curtobacterium wilt, caused by a gram-positive bacterium Curtobacterium flaccumfaciens pv. flaccumfaciens, responsible for brown bacterial wilt on soybean plants. The objective of this work was to expose the aspects of the pathogen Curtobacterium flaccumfaciens pv. flaccumfaciens in soybean crops, discussing the main control strategies to minimize problems caused by this disease. It should be emphasized that gaining knowledge about the agronomic aspects and limiting factors of soybean crop in relation to the pathogen is necessary to reach the best management of the disease. We concluded that the search for resistant cultivars is extremely important for disease management, since other control methods are inefficient. To achieve the control of bacterial tan spot in soybean crop, it is necessary to joint adoption of all the control techniques used in a unified way (disease integrated management) aiming at maintaining the population of Curtobacterium flaccumfaciens pv. flaccumfaciens at low levels.   Keywords: Bacterial Tan Spot. Disease Control; Glycine max L. Distribution.

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 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.

OAC Ramsay soybean

2018 ◽  
Vol 98 (6) ◽  
pp. 1392-1394
Author(s):  
S. Torabi ◽  
B.T. Stirling ◽  
J. Kobler ◽  
M. Eskandari
Keyword(s):  
Glycine Max ◽  
Soybean Cyst Nematode ◽  
Seed Protein ◽  
Cyst Nematode ◽  
Yield Potential ◽  
High Yield ◽  
Food Grade ◽  
Heat Units ◽  
Glycine Max L ◽  
High Yield Potential

OAC Ramsay is an indeterminate large-seeded food-grade soybean [Glycine max (L.) Merr.] cultivar with high yield potential, high seed protein and oil concentrations, and resistance to soybean cyst nematode. OAC Ramsay is developed and recommended for soybean growing areas in southwestern Ontario with 3050 or greater crop heat units and has a relative maturity of 2.2 (MG 2.2).

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.

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

scholarly journals Ampelopsin Confers Endurance and Rehabilitation Mechanisms in Glycine max cv. Sowonkong under Multiple Abiotic Stresses

2021 ◽  
Vol 22 (20) ◽  
pp. 10943
Author(s):  
Elham Ahmed Kazerooni ◽  
Abdullah Mohammed Al-Sadi ◽  
Il-Doo Kim ◽  
Muhammad Imran ◽  
In-Jung Lee
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Glycine Max ◽  
Agronomic Traits ◽  
Antioxidant Activities ◽  
Protein Amino Acid ◽  
Soybean Seedlings ◽  
Glycine Max L ◽  
Chlorophyll Protein ◽  
Soybean Plants

The present investigation aims to perceive the effect of exogenous ampelopsin treatment on salinity and heavy metal damaged soybean seedlings (Glycine max L.) in terms of physiochemical and molecular responses. Screening of numerous ampelopsin concentrations (0, 0.1, 1, 5, 10 and 25 μM) on soybean seedling growth indicated that the 1 μM concentration displayed an increase in agronomic traits. The study also determined how ampelopsin application could recover salinity and heavy metal damaged plants. Soybean seedlings were irrigated with water, 1.5% NaCl or 3 mM chosen heavy metals for 12 days. Our results showed that the application of ampelopsin raised survival of the 45-day old salinity and heavy metal stressed soybean plants. The ampelopsin treated plants sustained high chlorophyll, protein, amino acid, fatty acid, salicylic acid, sugar, antioxidant activities and proline contents, and displayed low hydrogen peroxide, lipid metabolism, and abscisic acid contents under unfavorable status. A gene expression survey revealed that ampelopsin application led to the improved expression of GmNAC109, GmFDL19, GmFAD3, GmAPX, GmWRKY12, GmWRKY142, and GmSAP16 genes, and reduced the expression of the GmERF75 gene. This study suggests irrigation with ampelopsin can alleviate plant damage and improve plant yield under stress conditions, especially those including salinity and heavy metals.

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