The role of Emericella rugulosa as a bio-control agent for controlling Fusarium wilt of tomato

2012 ◽  
Vol 7 (34) ◽  
Author(s):  
Sibounnavong P.
Keyword(s):  
Fusarium Wilt ◽  
Control Agent ◽  
Emericella Rugulosa

scholarly journals The Trends in the Evaluation of Fusarium Wilt of Chickpea

2021 ◽  
Author(s):  
Chandan Singh ◽  
Deepak Vyas
Keyword(s):  
Biological Control ◽  
Fusarium Wilt ◽  
Biological Control Agent ◽  
Am Fungi ◽  
Control Agent ◽  
Wilt Disease ◽  
Evaluation Strategies ◽  
Resistant Varieties ◽  
Tools And Techniques

Chickpea (Cicer arietinum L.) is one of the important annual legume crops, cultivated throughout the India since ancient time. It is also grown in many countries of the world. The crop has been facing numerous biotic and abiotic constraints. Among biotic constraint crop affected adversely by diseases, caused by many pathogens. Ever since 1918 when for the first time wilt disease of chickpea was reported and Fusarium oxysporum f. sp. ciceri was the causal organism many strategies have been adopted to control the wilt disease. The controlling methods included conventional as well as modern one. However, more and more emphasis was given on biological control agents such as AM fungi and Trichoderma. The role of AM fungi have been evaluated for controlling the wilt disease similarly role of Trichoderma is thoroughly established biological control agent against Fusarium wilt. With the advent of modern tools and techniques developing markers, resistant varieties, all such sources enable us to reduce the effect of pathogens. Here an attempted has been made to acknowledge the trend of disease management and evaluation strategies of Fusarium wilt of chickpea for getting better yields of the crop.

scholarly journals Identification and characterization of early Fusarium wilt responsive mRNAs and long non-coding RNAs in banana root using high-throughput sequencing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chunzhen Cheng ◽  
Fan Liu ◽  
Na Tian ◽  
Raphael Anue Mensah ◽  
Xueli Sun ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Acid Metabolism ◽  
Function Analysis ◽  
Regulatory Role ◽  
Novel Genes ◽  
Root Transcriptome ◽  
Qrt Pcr ◽  
Non Coding Rnas ◽  
Infection Stage

AbstractFusarium wilt disease, caused by Fusarium oxysporum f.sp. cubense (Foc), has been recognized as the most devastating disease to banana. The regulatory role of long non-coding RNAs (lncRNAs) in plant defense has been verified in many plant species. However, the understanding of their role during early FocTR4 (Foc tropical race 4) infection stage is very limited. In this study, lncRNA sequencing was used to reveal banana root transcriptome profile changes during early FocTR4 infection stages. Quantitative real time PCR (qRT-PCR) was performed to confirm the expression of eight differentially expressed (DE) lncRNAs (DELs) and their predicted target genes (DETs), and three DE genes (DEGs). Totally, 12,109 lncRNAs, 36,519 mRNAs and 2642 novel genes were obtained, of which 1398 (including 78 DELs, 1220 DE known genes and 100 DE novel genes) were identified as FocTR4 responsive DE transcripts. Gene function analysis revealed that most DEGs were involved in biosynthesis of secondary metabolites, plant–pathogen interaction, plant hormone signal transduction, phenylalanine metabolism, phenylpropanoid biosynthesis, alpha-linolenic acid metabolism and so on. Coincidently, many DETs have been identified as DEGs in previous transcriptome studies. Moreover, many DETs were found to be involved in ribosome, oxidative phosphorylation, lipoic acid metabolism, ubiquitin mediated proteolysis, N-glycan biosynthesis, protein processing in endoplasmic reticulum and DNA damage response pathways. QRT-PCR result showed the expression patterns of the selected transcripts were mostly consistent with our lncRNA sequencing data. Our present study showed the regulatory role of lncRNAs on known biotic and abiotic stress responsive genes and some new-found FocTR4 responsive genes, which can provide new insights into FocTR4-induced changes in the banana root transcriptome during the early pathogen infection stage.

Small Mammals as Predators of Sawflies

1955 ◽  
Vol 87 (3) ◽  
pp. 121-123 ◽  
Author(s):  
C. H. Buckner
Keyword(s):  
Small Mammals ◽  
Biological Control Agent ◽  
Control Agent ◽  
Moderate Risk ◽  
Neodiprion Abietis ◽  
Ample Opportunity ◽  
Pristiphora Erichsonii ◽  
Mammalian Predators ◽  
One Year

The greatest predatory effect of small mammals is exerted upon insects that spend a portion of their life cycle on the ground or in the soil. Sawflies afford ample opportunity for mammalian predation, since they drop to the ground as mature larvae and spin cocoons in the soil. Such sawflies as Neodiprion abietis Harr., which remain within the cocoon for about three weeks, undergo only moderate risk of being preyed upon by small mammal. However, Pristiphora erichsonii (Htg.) remains within the cocoon from about mid-August until the following June, or even over more than one year, thus greatly extending the vulnerable period. Earlier investigations suggest that small mammals may comprise the largest single biological control agent acting against this insect (Graham 1928, Lejeune 1951), but the exact role of mammalian predators of forest insects has yet to be established.

PERANAN TRICHOKOMPOS DAN PUPUK KCL DALAM MENGENDALIKAN PENYAKIT LAYU FUSARIUM PADA TANAMAN BAWANG MERAH DI TANAH BERPASIR (The Role of Trichokompos and KCL Fertilizer to Control Fusarium Will Disease on Onion in Sandy Soil)

AgriPeat ◽  
2019 ◽  
Vol 20 (01) ◽  
pp. 19-26
Author(s):  
Admin Journal
Keyword(s):  
Research Design ◽  
Fusarium Wilt ◽  
Sandy Soil ◽  
Incubation Time ◽  
Block Design ◽  
Wilt Disease ◽  
Single Factor ◽  
Fusarium Wilt Disease ◽  
Randomized Block Design

ABSTRACTThe role of Trichocompost and KCl fertilizer to control Fusarium wilt disease on onion in sandy soil. Fusarium wilt on onion is an interesting disease it is can loss the onion yield. The purpose of research to study trichocompost and KCl fertilizer role to control Fusarium wilt disease on ann onion. The research design used a Factorial Randomized Block Design with 2 factors. The first factor is 4 levels trichocompost, it is: without trichocompost (T0), trichocompost 10 t.ha-1 dosage (T1), trichocompost 20 t.ha-1 dosage (T2), trichocompost 30 t.ha-1 dosage (T3). The second factor is 3 levels KCl fertilizer, it is: without KCl (K0), KCl 100 kg.ha-1 dosage (K1), KCl 200 kg.ha-1 dosage (K2). Result of this research showed the application of trichocompost 10 t.ha-1 dosage and KCl 100 kg.ha-1 dosage can inhibit Fusarium wilt incubation time, can inhibit the patogen development with effective value 89,23%, the single factor it is aplication trichocompost 10 t.ha-1 dosage and trichocompost 30 t.ha-1 dosage not significant to dried onion bulb weight per clump of onion plant.Key words: Trichocompost, KCl fertilizer, Fusarium wilt disease, onion, sandy soil.ABSTRAKPenyakit layu Fusarium merupakan salah satu penyakit penting dapat menurunkan produksi bawang merah hingga 50%. Tujuan penelitian untuk mengetahui peranan trichokompos dan pupuk KCl dalam mengendalikan penyakit layu fusarium pada tanaman bawang merah. Penelitian menggunakan Rancangan Acak Kelompok faktorial dua faktor perlakuan. Faktor pertama 4 taraf dosis trichokompos yaitu: tanpa trichokompos (T0), trichokompos dosis 10 t.ha-1 (T1), trichokompos dosis 20 t.ha-1 (T2), trichokompos dosis 30 t.ha-1 (T3). Faktor kedua 3 taraf dosis pupuk KCl yaitu: tanpa pupuk KCl (K0), pupuk KCl dosis 100 KCl kg.ha-1 (K1), pupuk KCl dosis 200 KCl kg.ha-1 (K2). Hasil penelitian menunjukkan pemberian trichokompos 10 t.ha-1 dan pupuk KCl 100 kg.ha-1 dapat memperpanjang masa inkubasi penyakit, menekan serangan penyakit layu Fusarium dengan nilai efektivitas sangat baik (89,23%), perlakuan tunggal trichokompos dosis 10 t.ha-1 tidak berbeda nyata dengan dosis 30 t.ha-1 terhadap bobot umbi kering per rumpun tanaman bawang merah.Kata kunci: penyakit layu Fusarium, pupuk KCl, tanah berpasir, tanaman bawang merah, trichokompos.

scholarly journals Role of soil physicochemical and microbiological properties in the occurrence and severity of chickpea's Fusarium wilt disease

2019 ◽  
Vol 8 (4) ◽  
pp. 304-312
Author(s):  
Dahou Moutassem ◽  
Lakhdar Belabid ◽  
Yuva Bellik ◽  
Noureddine Rouag ◽  
Hanane Abed ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Wilt Disease ◽  
Fusarium Wilt Disease ◽  
Microbiological Properties

scholarly journals Role of Melatonin in Arbuscular Mycorrhizal Fungi-Induced Resistance to Fusarium Wilt in Cucumber

2020 ◽  
Vol 110 (5) ◽  
pp. 999-1009 ◽  
Author(s):  
Golam Jalal Ahammed ◽  
Qi Mao ◽  
Yaru Yan ◽  
Meijuan Wu ◽  
Yaqi Wang ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Fusarium Wilt ◽  
Mycorrhizal Fungi ◽  
Electrolyte Leakage ◽  
Leaf Gas Exchange ◽  
Combined Treatment ◽  
Arbuscular Mycorrhizal ◽  
Control Effect ◽  
Amf Inoculation

Melatonin is a multifunctional molecule that confers tolerance to a number of biotic and abiotic stresses in plants. However, the role of melatonin in plant response to Fusarium oxysporum and the interaction with arbuscular mycorrhizal fungi (AMF) remain unclear. Here we show that exogenous melatonin application promoted the AMF colonization rate in cucumber roots, which potentially suppressed Fusarium wilt as evidenced by a decreased disease index and an increased control effect. Leaf gas exchange analysis revealed that Fusarium inoculation significantly decreased the net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentrations (Ci), and transpiration rate (Tr). Intriguingly, either melatonin application or AMF inoculation significantly increased the Pn, Gs, Tr, and dry biomass, and their combined treatment showed a more profound effect under Fusarium stress. Further analysis showed that Fusarium induced oxidative stress as evidenced by increased lipid peroxidation and electrolyte leakage. Conversely, either melatonin or AMF drastically attenuated the levels of malondialdehyde, H2O2, and electrolyte leakage in Fusarium-inoculated plants, and their combined treatment caused a further decrease. Fusarium inoculation decreased the activity and transcripts of superoxide dismutase and ascorbate peroxidase, and the content of glutathione and proline. Besides, the activity and transcripts of peroxidase and catalase, the content of phenols and flavonoids increased after Fusarium infection. Importantly, melatonin and/or AMF significantly increased those parameters with the greatest effect with their combined treatment under Fusarium stress. Our results suggest that a positive collaboration between melatonin and AMF enhances resistance to Fusarium wilt in cucumber plants.

The Role of Crystal Control Agent in the Formation of Needlelike Calcium Carbonate Nano Particles

2011 ◽  
Vol 236-238 ◽  
pp. 2150-2159
Author(s):  
Yu Qian Ye ◽  
Xue Mei Chen
Keyword(s):  
Calcium Carbonate ◽  
Aspect Ratio ◽  
Crucial Role ◽  
Average Diameter ◽  
Morphological Characterization ◽  
Control Agent ◽  
Nano Particles ◽  
Precipitated Calcium Carbonate ◽  
Nanometer Particles

In this work, needlelike precipitated calcium carbonate (PCC) nanometer particles were synthesized by industrial carbonation route using EDTA as crystal control agent. The morphological characterization shows that the as-synthesized needlelike PCC particles have an average diameter of 52 nm and an aspect ratio of around 14:1. The results indicate that EDTA plays a crucial role in the formation of needlelike PCC nanometer particles. A possible mechanism for the formation of needlelike PCC particles assisted by the crystal control agent EDTA is also proposed.

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