scholarly journals Regulatory Network of Cotton Genes in Response to Salt, Drought and Wilt Diseases (Verticillium and Fusarium): Progress and Perspective

2021 ◽  
Vol 12 ◽  
Author(s):  
Masum Billah ◽  
Fuguang Li ◽  
Zhaoen Yang
Keyword(s):  
Regulatory Network ◽  
Crop Production ◽  
Transcriptional Control ◽  
Genetic Network ◽  
Signaling Cascades ◽  
Biotic Stresses ◽  
Cotton Plants ◽  
Plant Genes ◽  
Stress Related Genes ◽  
Severe Growth

In environmental conditions, crop plants are extremely affected by multiple abiotic stresses including salinity, drought, heat, and cold, as well as several biotic stresses such as pests and pathogens. However, salinity, drought, and wilt diseases (e.g., Fusarium and Verticillium) are considered the most destructive environmental stresses to cotton plants. These cause severe growth interruption and yield loss of cotton. Since cotton crops are central contributors to total worldwide fiber production, and also important for oilseed crops, it is essential to improve stress tolerant cultivars to secure future sustainable crop production under adverse environments. Plants have evolved complex mechanisms to respond and acclimate to adverse stress conditions at both physiological and molecular levels. Recent progresses in molecular genetics have delivered new insights into the regulatory network system of plant genes, which generally includes defense of cell membranes and proteins, signaling cascades and transcriptional control, and ion uptake and transport and their relevant biochemical pathways and signal factors. In this review, we mainly summarize recent progress concerning several resistance-related genes of cotton plants in response to abiotic (salt and drought) and biotic (Fusarium and Verticillium wilt) stresses and classify them according to their molecular functions to better understand the genetic network. Moreover, this review proposes that studies of stress related genes will advance the security of cotton yield and production under a changing climate and that these genes should be incorporated in the development of cotton tolerant to salt, drought, and fungal wilt diseases (Verticillium and Fusarium).

scholarly journals Potential applications of biogenic selenium nanoparticles in alleviating biotic and abiotic stresses in plants: A comprehensive insight on the mechanistic approach and future perspectives

2021 ◽  
Vol 10 (1) ◽  
pp. 456-475
Author(s):  
Efat Zohra ◽  
Muhammad Ikram ◽  
Ahmad A. Omar ◽  
Mujahid Hussain ◽  
Seema Hassan Satti ◽  
...  
Keyword(s):  
Abiotic Stresses ◽  
Crop Production ◽  
Plant Secondary Metabolites ◽  
Selenium Nanoparticles ◽  
Future Research ◽  
Biotic And Abiotic Stresses ◽  
Biotic Stresses ◽  
Agriculture Sector ◽  
Developmental Growth ◽  
Potential Applications

Abstract In the present era, due to the increasing incidence of environmental stresses worldwide, the developmental growth and production of agriculture crops may be restrained. Selenium nanoparticles (SeNPs) have precedence over other nanoparticles because of the significant role of selenium in activating the defense system of plants. In addition to beneficial microorganisms, the use of biogenic SeNPs is known as an environmentally friendly and ecologically biocompatible approach to enhance crop production by alleviating biotic and abiotic stresses. This review provides the latest development in the green synthesis of SeNPs by using the results of plant secondary metabolites in the biogenesis of nanoparticles of different shapes and sizes with unique morphologies. Unfortunately, green synthesized SeNPs failed to achieve significant attention in the agriculture sector. However, research studies were performed to explore the application potential of plant-based SeNPs in alleviating drought, salinity, heavy metal, heat stresses, and bacterial and fungal diseases in plants. This review also explains the mechanistic actions that the biogenic SeNPs acquire to alleviate biotic and abiotic stresses in plants. In this review article, the future research that needs to use plant-mediated SeNPs under the conditions of abiotic and biotic stresses are also highlighted.

Effect of growth regulator “Zerebra Agro” on soybean yield in the Kaluga region

2020 ◽  
Author(s):  
З. Фёдорова ◽  
А. Шитикова ◽  
А. Тевченков
Keyword(s):  
Growth Regulator ◽  
Crop Production ◽  
Wide Spectrum ◽  
Growth Yield ◽  
Biological Action ◽  
Colloidal Solutions ◽  
Potential Productivity ◽  
Seed Formation ◽  
Biotic Stresses ◽  
Kaluga Region

Исследования проведены в условиях полевого опыта на дерново-подзолистых супесчаных почвах в 20162017 годах и заключались в выявлении потенциальной урожайности сортов сои северного экотипа и определении эффективности действия ростостимулирующих препаратов в агроклиматических условиях Калужской области. Объектами исследований были сорта сои Магева, Светлая и Касатка. В последнее время в растениеводстве для подавления фитопатогенной микрофлоры доказана возможность применения в низких концентрациях солей серебра. На растениях применяют серебросодержащие препараты коллоидные растворы, содержащие наноразмерные частицы металлического серебра, широкого спектра биологического действия. Регулятор роста Зеребра Агро , применяемый в исследованиях на культуре сои, создан на основе коллоидного серебра. Его положительное действие в первую очередь определяется влиянием ионов серебра на растения за счёт ингибирования отклика клеток на фитогормон этилен, что приводит к соответствующим изменением баланса физиологических процессов. Применение регулятора роста Зеребра Агро для обработки семян и вегетирующих посевов сои позволило увеличить высоту растений в среднем за 2 года на 23 см, площадь листьев в фазу налива семян на 2,78,8 тыс. м2/га, урожайность семян на 0,10,23 т/га, содержание белка на 2,03,7, а содержание жира на 0,10,3 в сравнении с контролем. Показано действие регулятора роста Зеребра Агро на повышение устойчивости растений сои к неблагоприятным факторам внешней среды, болезням, а также на рост и развитие растений, продуктивность сои и качество продукции. The investigation took place in 20162017 on sod-podzolic sandy soil. The goal was to determine a potential productivity of northern soybean varieties and an effectiveness of growth regulators in the Kaluga region. Soybean varieties Mageva, Svetlaya and Kasatka performed as objects of the study. Lately Crop Production showed that low concentrations of Ag salts negatively affect phytopathogenic microflora. Plants get treated by silver-containing preparations colloidal solutions containing Ag nanoparticles of wide spectrum of biological action. Growth regulator Zerebra Agro is based on colloidal silver and used on soybean. Ag slows down plant cell response in the presence of ethylene changing the chain of physiological reactions. Treatments of soybean seeds and plants with Zerebra Agro increased plant height by 23 cm for 2 years, leaf surface at seed formation time by 2.78.8 thousand m2 ha-1, seed yield by 0.10.23 t ha-1, protein content by 2.03.7, fat concentration by 0.10.3. This paper also reports on the effect of Zerebra Agro on soybean resistance to abiotic and biotic stresses as well as plant growth, yield and quality.

Heterologous expression of a plant WRKY protein confers multiple stress tolerance in E. coli Bir bitkinin heterolog ifadesi WRKY proteini çoklu stres yaratır E. coli’de tolerans

2020 ◽  
Vol 45 (2) ◽  
Author(s):  
Farah Deeba ◽  
Tasawar Sultana ◽  
Nadia Majeed ◽  
Syed Muhammad Saqlan Naqvi
Keyword(s):  
Environmental Stresses ◽  
Wrky Protein ◽  
Stress Indicators ◽  
Biotic Stresses ◽  
E Coli ◽  
Qpcr Analysis ◽  
Defensive Role ◽  
Stress Related Genes ◽  
Multiple Stress Tolerance

AbstractObjectiveOsWRKY71, a WRKY protein from rice, is reported to function during biotic stresses. It is requisite to further enquire the efficiency and mechanism of OsWRKY71 under various environmental stresses. Stress indicators such as salt, cold, heat, and drought were studied by overexpressing the OsWRKY71 in E. coli.Materials and methodsDNA binding domain containing region of OsWRKY71 was cloned and expressed in E. coli followed by exposure to stress conditions. OsWRKY71 was also assessed for its role in abiotic stresses in rice by qPCR.ResultsRecombinant E. coli expressing OsWRKY71 was more tolerant to stresses such as heat, salt and drought in spot assay. The tolerance was further confirmed by monitoring the bacterial growth in liquid culture assay demonstrating that it encourages the E. coli growth under salt, drought, and heat stresses. This tolerance may be the consequence of OsWRKY71 interaction with the promoter of stress related genes or with other proteins in bacteria. The RT-qPCR analysis revealed the up-regulation of OsWRKY71 gene in rice upon interaction to cold, salt, drought and wounding with maximum up-regulation against salinity.ConclusionThus, the defensive role of OsWRKY71 may accord to the development and survival of plants during different environmental stresses.

scholarly journals Isolation and characterization of Pseudomonas chlororaphis strain ST9 and its potential as a bioinoculant for agriculture

2020 ◽  
Author(s):  
Iris Bertani ◽  
Elisa Zampieri ◽  
Cristina Bez ◽  
Andrea Volante ◽  
Vittorio Venturi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Crop Yields ◽  
Whole Genome Sequence ◽  
Pseudomonas Chlororaphis ◽  
Plant Tolerance ◽  
Biotic Stresses ◽  
Isolation And Characterization ◽  
Plant Growth Promoting ◽  
Plant Genes

AbstractThe development of biotechnologies based on beneficial microorganisms for improving soil fertility and crop yields could help addressing many current agriculture challenges, such as food security, climate change, pests control, soil depletion while decreasing the use of chemical fertilizers and pesticides. Plant Growth Promoting (PGP) microbes can be used as probiotics in order to increase plant tolerance/resistance to abiotic/biotic stresses and in this context strains belonging to the Pseudomonas chlororaphis group have shown to have potential as PGP candidates. In this work a new P. chlororaphis isolate is reported and tested for (i) in vitro PGP features, (ii) whole genome sequence analysis, and (iii) its effects on root microbiome, plant growth and on the expression of different plant genes in greenhouse experiments. The potential use of this P. chlororaphis strain as a plant probiotic is discussed.

scholarly journals Nanopesticides: Current status and scope for their application in agriculture

2021 ◽  
Author(s):  
Jayant Yadav ◽  
Poonam Jasrotia ◽  
Ajay Kumar Bhardwaj ◽  
Prem Lal Kashyap ◽  
Sudheer Kumar ◽  
...  
Keyword(s):  
Crop Production ◽  
Food Systems ◽  
Insect Pests ◽  
High Surface ◽  
High Surface Area ◽  
Plant Diseases ◽  
Current Status ◽  
Human Beings ◽  
Biotic Stresses ◽  
Volume Property

 Nanotechnology is a rapidly evolving field that has the potential to revolutionise food systems and counter the present-day challenge of food security. It envisages taking agriculture from the era of indiscriminate natural resource use and environmental degradation to the brave new world of advanced systems with enhanced material use efficiency and targeted applications to reduce crop losses caused due to abiotic-biotic stresses as well as to give due considerations to the environment. To manage plant diseases and insect pests, pesticides are inevitably used in agriculture. However, the higher dosage of these chemicals on a per hectare basis has resulted in many environmental and health hazards. To tackle the conventional pesticide related issues, a new field of science called nanotechnology has led to the development of nanopesticides that have less active ingredients, but better efficiency. The nanopesticides contain the carrier molecule or the active nanosized ingredient with a very high surface area to the volume property that provides them unique exploitable-advantages. Several formulations, viz., nanoemulsions, nanosuspensions, nanogels, metal compound-based nanopesticides, have been developed for different modes of action and vivid applications. The biggest advantage comes due to the small size of the particles that help in properly spreading the ingredients on the pest surface and, thus, producing a better action than conventional pesticides. The use of nanoparticles in the form of nanopesticides, nanofertilisers, and nano delivery systems is on the increase day by day due to their higher efficiency and reduced dosage requirements. However, human beings and other organisms are also getting exposed to the nano-entities during the application or afterwards. The interactions of these engineered nano-entities with biological systems are relatively unknown thus far. Therefore, before their wider usage in crop production and protection, a better understanding of their interactions, and adverse effects, if any, is also crucial for a sustainable transition.  

scholarly journals Current Perspectives on the Auxin-Mediated Genetic Network that Controls the Induction of Somatic Embryogenesis in Plants

2020 ◽  
Vol 21 (4) ◽  
pp. 1333 ◽  
Author(s):  
Anna M. Wójcik ◽  
Barbara Wójcikowska ◽  
Małgorzata D. Gaj
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Growth ◽  
Regulatory Network ◽  
Baby Boom ◽  
Genetic Network ◽  
Signalling Pathway ◽  
Common Belief ◽  
Response Factors ◽  
Auxin Signalling

Auxin contributes to almost every aspect of plant development and metabolism as well as the transport and signalling of auxin-shaped plant growth and morphogenesis in response to endo- and exogenous signals including stress conditions. Consistently with the common belief that auxin is a central trigger of developmental changes in plants, the auxin treatment of explants was reported to be an indispensable inducer of somatic embryogenesis (SE) in a large number of plant species. Treating in vitro-cultured tissue with auxins (primarily 2,4-dichlorophenoxyacetic acid, which is a synthetic auxin-like plant growth regulator) results in the extensive reprogramming of the somatic cell transcriptome, which involves the modulation of numerous SE-associated transcription factor genes (TFs). A number of SE-modulated TFs that control auxin metabolism and signalling have been identified, and conversely, the regulators of the auxin-signalling pathway seem to control the SE-involved TFs. In turn, the different expression of the genes encoding the core components of the auxin-signalling pathway, the AUXIN/INDOLE-3-ACETIC ACIDs (Aux/IAAs) and AUXIN RESPONSE FACTORs (ARFs), was demonstrated to accompany SE induction. Thus, the extensive crosstalk between the hormones, in particular, auxin and the TFs, was revealed to play a central role in the SE-regulatory network. Accordingly, LEAFY COTYLEDON (LEC1 and LEC2), BABY BOOM (BBM), AGAMOUS-LIKE15 (AGL15) and WUSCHEL (WUS) were found to constitute the central part of the complex regulatory network that directs the somatic plant cell towards embryogenic development in response to auxin. The revealing picture shows a high degree of complexity of the regulatory relationships between the TFs of the SE-regulatory network, which involve direct and indirect interactions and regulatory feedback loops. This review examines the recent advances in studies on the auxin-controlled genetic network, which is involved in the mechanism of SE induction and focuses on the complex regulatory relationships between the down- and up-stream targets of the SE-regulatory TFs. In particular, the outcomes from investigations on Arabidopsis, which became a model plant in research on genetic control of SE, are presented.

scholarly journals Isolation and Characterization of Pseudomonas chlororaphis Strain ST9; Rhizomicrobiota and in Planta Studies

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1466
Author(s):  
Iris Bertani ◽  
Elisa Zampieri ◽  
Cristina Bez ◽  
Andrea Volante ◽  
Vittorio Venturi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Crop Yields ◽  
Whole Genome Sequence ◽  
Pseudomonas Chlororaphis ◽  
Plant Tolerance ◽  
In Planta ◽  
Biotic Stresses ◽  
Isolation And Characterization ◽  
Plant Genes

The development of biotechnologies based on beneficial microorganisms for improving soil fertility and crop yields could help to address many current agriculture challenges, such as food security, climate change, pest control, soil depletion while decreasing the use of chemical fertilizers and pesticides. Plant growth-promoting (PGP) microbes can be used as probiotics in order to increase plant tolerance/resistance to abiotic/biotic stresses and in this context strains belonging to the Pseudomonas chlororaphis group have shown to have potential as PGP candidates. In this study a new P. chlororaphis isolate is reported and tested for (i) in vitro PGP features, (ii) whole-genome sequence analysis, and (iii) its effects on the rhizosphere microbiota composition, plant growth, and different plant genes expression levels in greenhouse experiments. Results showed that P. chlororaphis ST9 is an efficient rice root colonizer which integrates into the plant resident-microbiota and affects the expression of several plant genes. The potential use of this P. chlororaphis strain as a plant probiotic is discussed.

Transcriptional control of plant genes responsive to pathogens

1998 ◽  
Vol 1 (4) ◽  
pp. 311-315 ◽  
Author(s):  
Paul J. Rushton ◽  
Imre E. Somssich
Keyword(s):  
Transcriptional Control ◽  
Plant Genes

scholarly journals Evolution and Analysis of Genetic Networks for Stable Cellular Growth and Regeneration

2012 ◽  
Vol 18 (4) ◽  
pp. 425-444 ◽  
Author(s):  
Lisa Schramm ◽  
Yaochu Jin ◽  
Bernhard Sendhoff
Keyword(s):  
Gene Regulatory Network ◽  
Regulatory Network ◽  
Developmental Process ◽  
Stable State ◽  
Genetic Network ◽  
Cellular Growth ◽  
Self Healing ◽  
Fitness Evaluation ◽  
Gene Regulatory ◽  
Stable Growth

A computational model is presented that simulates stable growth of cellular structures that are in some cases capable of regeneration. In the model, cellular growth is governed by a gene regulatory network. By evolving the parameters and structure of the genetic network using a modified evolution strategy, a dynamically stable state can be achieved in the developmental process, where cell proliferation and cell apoptosis reach an equilibrium. The results of evolution with different setups in fitness evaluation during the development are compared with respect to their regeneration capability as well as their gene regulatory network structure. Network motifs responsible for stable growth and regeneration that emerged from the evolution are also analyzed. We expect that our findings can help to gain a better understanding of the process of growth and regeneration inspired by biological systems, in order to solve complex engineering problems, such as the design of self-healing materials.

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