Nanotechnology as a Smart Way to Promote the Growth of Plants and Control Plant Diseases

2021 ◽  
pp. 1-16
Author(s):  
Heba Mahmoud Mohammad Abdel‐Aziz ◽  
Mohammed Nagib Abdel‐ghany Hasaneen
Keyword(s):  
Control Plant ◽  
Plant Diseases ◽  
And Control

Bacteriophages to control plant diseases

2021 ◽  
pp. 473-506
Author(s):  
Manoj Choudhary ◽  
◽  
Mathews Paret ◽  
Aleksa Obradović ◽  
Katarina Gašić ◽  
...  
Keyword(s):  
Plant Pathogens ◽  
Uv Light ◽  
Control Measure ◽  
Management Strategies ◽  
Control Plant ◽  
Plant Diseases ◽  
Bacterial Diseases ◽  
Time Of Application ◽  
Development Of Resistance ◽  
And Control

Crop yield loss due to bacterial plant pathogens need to be reduced to increase global food production demand. Currently available disease management strategies involving copper-based bactericides and antibiotics are losing efficacy due to development of resistance in bacteria. There is long familiar demand of environmentally friendly and sustainable strategies to control bacterial diseases. Bacteriophages are virus that kill target bacteria without affecting another microorganism and environment. Bacteriophage efficiency on phyllosphere is mainly affected by ultraviolet (UV) light. Use of combination of phage, mixture with phage carrier bacteria and optimizing time of application helps in persistence of bacteriophage. There are several bacteriophage products already available in the market to control destructive bacterial diseases. Unlike chemical based traditional control measure, bacteriophage mixture can be easily amended to reduce resistance development in bacteria. In this chapter, the authors discuss from phage isolation to interaction with bacteria and control mechanism of plant diseases.

scholarly journals NITROGEN FIXING BACTERIA AZOTOBACTER AS BIOFERTILIZER AND BIOCONTROL IN LONG BEAN

Agric ◽  
2018 ◽  
Vol 30 (1) ◽  
pp. 25-32
Author(s):  
Reginawanti Hindersah ◽  
Marthin Kalay ◽  
Abraham Talahaturuson ◽  
Yansen Lakburlawal
Keyword(s):  
Block Design ◽  
Control Plant ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Diseases ◽  
Damping Off ◽  
Randomized Block Design ◽  
Plant Growth Promoting ◽  
Npk Fertilizer ◽  
Growth Promoting ◽  
And Control

Azotobacter is Plant Growth Promoting Rhizobacteria through the mechanism of nitrogen fixation and phytohormon production but this rhizobacteria has a role to control plant diseases. The objective of experiment was to evaluate the activity of Azotobacter as biofertilizers as well as biocontrol on long bean cultivation in damping off endemic land in Ambon city, Maluku Province. The field experiment was arranged in completely randomized block design. Inoculation of long bean by Azotobacter has been done by seed inoculation, soil inoculation before planting, and plant inoculation. Plants treated with Azotobacter received fertilizer NPK of ¾ or ½ dosage recommendation while control plants were received 100% NPK. Research showed that no differences between yield of long bean inoculated with Azotobacter sp +reduced doses of NPK with that of control plants. Any application method of Azotobacter inoculation lowered damping off diseases incidence significantly until 10 days after planting, but no effect of inoculation on late blight at 21 days after planting. This study confirmed that Azotobacter has dual activity to reduce the dose of NPK fertilizer and control damping off.

scholarly journals Microbial Biocontrol as an Alternative to Synthetic Fungicides: Boundaries between Pre- and Postharvest Applications on Vegetables and Fruits

Fermentation ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 60
Author(s):  
Vincenzo Michele Sellitto ◽  
Severino Zara ◽  
Fabio Fracchetti ◽  
Vittorio Capozzi ◽  
Tiziana Nardi
Keyword(s):  
Crop Production ◽  
Fruits And Vegetables ◽  
Control Plant ◽  
Agricultural Practices ◽  
Plant Diseases ◽  
Postharvest Quality ◽  
Crucial Point ◽  
Production Chain ◽  
Vegetables And Fruits ◽  
And Storage

From a ‘farm to fork’ perspective, there are several phases in the production chain of fruits and vegetables in which undesired microbial contaminations can attack foodstuff. In managing these diseases, harvest is a crucial point for shifting the intervention criteria. While in preharvest, pest management consists of tailored agricultural practices, in postharvest, the contaminations are treated using specific (bio)technological approaches (physical, chemical, biological). Some issues connect the ‘pre’ and ‘post’, aligning some problems and possible solution. The colonisation of undesired microorganisms in preharvest can affect the postharvest quality, influencing crop production, yield and storage. Postharvest practices can ‘amplify’ the contamination, favouring microbial spread and provoking injures of the product, which can sustain microbial growth. In this context, microbial biocontrol is a biological strategy receiving increasing interest as sustainable innovation. Microbial-based biotools can find application both to control plant diseases and to reduce contaminations on the product, and therefore, can be considered biocontrol solutions in preharvest or in postharvest. Numerous microbial antagonists (fungi, yeasts and bacteria) can be used in the field and during storage, as reported by laboratory and industrial-scale studies. This review aims to examine the main microbial-based tools potentially representing sustainable bioprotective biotechnologies, focusing on the biotools that overtake the boundaries between pre- and postharvest applications protecting quality against microbial decay.

scholarly journals The Use of Essential Oils from Thyme, Sage and Peppermint against Colletotrichum acutatum

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 114
Author(s):  
Armina Morkeliūnė ◽  
Neringa Rasiukevičiūtė ◽  
Lina Šernaitė ◽  
Alma Valiuškaitė
Keyword(s):  
Essential Oils ◽  
Fungal Pathogens ◽  
Control Plant ◽  
Antimicrobial Activities ◽  
Plant Diseases ◽  
Colletotrichum Acutatum ◽  
Low Toxicity ◽  
Colletotrichum Spp ◽  
Biological Protection

The Colletotrichum spp. is a significant strawberry pathogen causing yield losses of up to 50%. The most common method to control plant diseases is through the use of chemical fungicides. The findings of plants antimicrobial activities, low toxicity, and biodegradability of essential oils (EO), make them suitable for biological protection against fungal pathogens. The aim is to evaluate the inhibition of Colletotrichum acutatum by thyme, sage, and peppermint EO in vitro on detached strawberry leaves and determine EO chemical composition. Our results revealed that the dominant compound of thyme was thymol 41.35%, peppermint: menthone 44.56%, sage: α,β-thujone 34.45%, and camphor: 20.46%. Thyme EO inhibited C. acutatum completely above 200 μL L−1 concentration in vitro. Peppermint and sage EO reduced mycelial growth of C. acutatum. In addition, in vitro, results are promising for biological control. The detached strawberry leaves experiments showed that disease reduction 4 days after inoculation was 15.8% at 1000 μL L−1 of peppermint EO and 5.3% at 800 μL L−1 of thyme compared with control. Our findings could potentially help to manage C. acutatum; however, the detached strawberry leaves assay showed that EO efficacy was relatively low on tested concentrations and should be increased.

scholarly journals PENGARUH KONSENTRASI MINYAK KEMIRI SUNAN (Reutealis trisperma (Blanco) Airy Shaw) TERHADAP LARVA Crocidolomia binotalis Zell. (Lepidoptera; Pyralidae) HAMA PADA TANAMAN SAWI (Brassica juncea L.)

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Yenny Muliani ◽  
Erry Mustariani ◽  
Rahmat Wahid Ramdyan
Keyword(s):  
Feeding Activity ◽  
Dry Weight ◽  
Plant Diseases ◽  
Hazelnut Oil ◽  
Botanical Pesticide ◽  
Crocidolomia Binotalis ◽  
Randomized Design ◽  
Lepidoptera Pyralidae ◽  
The University ◽  
And Control

ABSTRAKKemiri sunan (Reutealis trisperma (Blanco) Airy Shaw) dikenal sebagai tumbuhan yang berperan sebagai pestisida nabati yang belum banyak diketahui keampuhannya, sehingga perlu dilakukan pengujian untuk memperoleh informasi tentang keampuhan dari tumbuhan ini. Pengujian efektivitasnya dilakukan terhadap larva Crocidolomia binotalis Zell. penyebab kerusakan pada tanaman sawi. Percobaan dilaksanakan di Laboratorium Vertebrata, Departemen Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Padjadjaran, Jatinangor, berlangsung dari Maret sampai Mei 2019. Percobaan menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan. Perlakuan meliputi minyak kemiri sunan dengan konsentrasi 10%, 5%, 2.5%, 1.25% dan kontrol. Hasil penelitian menunjukkan minyak kemiri sunan berpengaruh terhadap larva Crocidolomia binotalis. Konsentrasi 10% dapat mengakibatkan mortalitas paling tinggi sebesar 100% pada 7 HSA. Selain toksik, minyak kemiri sunan juga dapat memperpanjang lama perkembangan larva, menghambat aktivitas makan (antifeedant), serta menurunkan berat kering larva dibandingkan dengan kontrol. Minyak kemiri sunan berpotensi sebagai alternatif pengendali hama yang ramah lingkungan karena dapat berperan sebagai pestisida nabatiKata kunci: Kemiri sunan, Crocidolomia binotalis, Pestisida nabatiABSTRACTReutealis trisperma (Blanco) Airy Shaw is know as a plant that acts as a vegetable pesticide that is not yet widely known for its efficacy, so testing is needed to obtain information about the efficacy of this plant. Effectiveness testing is carried out on Crocidolomia binotalis Zell. larvae causing damage to oil palm plants. The experiment was carried out in the vertebrate laboratory, the deparment of pest and plant diseases, the faculty of agriculture, the university Padjadjaran, taking place from March-May 2019. The experiment used the randomized design complete with 5 treatments and 5 replication. The treatments included oil Reutealis trisperma (Blanco) Airy Shaw with a concentration 10%, 5%, 2.5%, 1.25% and control. The result hazelnut oil affected the larva Crocidolomia binotalis Zell. 10% concentration can cause the highest mortality of 100% at 7 HAS. In addition to toxic, hazelnut oil prolong the development of larvae, inhibit feeding activity, and reduce the dry weight of larvae compared to controls. Hazelnut oil has potential as an alternative as an a alternative pest control that is environmentally friendly because it can act as a botanical pesticide.Keywords : Reutealis trisperma, Crocidolomia binotalis, Botanical pesticide

scholarly journals Pemberdayaan Kelompok Tani Hortikultura di Lahan Pasir melalui Pemanfaatan Kayambang (Salvinia molesta) sebagai Trichokompos

2021 ◽  
Vol 6 (4) ◽  
pp. 369-375
Author(s):  
Rahmawati Budi Mulyani ◽  
Lilies Supriati ◽  
Melhanah Melhanah ◽  
Susi Kresnatita
Keyword(s):  
Control Plant ◽  
Biological Agents ◽  
Plant Diseases ◽  
Organic Fertilizers ◽  
Mentoring Program ◽  
Salvinia Molesta ◽  
Horticultural Crop ◽  
Self Help ◽  
Trichoderma Sp ◽  
Farmer Groups

Lebak swamp weeds such as Kayambang (Salvinia molesta) grow abundantly. They can be used as compost, which effectively improves soil fertility, increasing nutrients N, P, and P K quickly and environmentally friendly. The effectiveness of compost fertilizer needs to be increased by adding indigenous microbes as decomposers and biological agents to control plant diseases. The activities carried out to empower horticultural farmer groups on sandy land in Tanjung Pinang Village, Palangka Raya are through socialization, training in composting with three types of antagonist fungus Trichoderma sp. (Trichocompost), facilitate the procurement of weed chopping machines, assist farmers in horticultural crop cultivation, and increase farmers' independence in self-supporting organic fertilizers. The use of Kayambang as Trichocompost with microbial decomposers and indigenous biological agents is new knowledge for partner farmers. The application of Trichocompost on the demonstration plots shows that eggplant plant growth and yields are excellent, meaning that Trichocompost can improve the fertility of sandy soils. Farmers participating in the training stated that the use of Trichocompost could reduce farming costs because it can substitute for manure that has been used by farmers and can meet the self-help needs of organic fertilizers. Participants wanted an advanced mentoring program because the farmers had not yet mastered the isolation or propagation of biological agents and decomposer microbes.

Clonostachys rosea to control plant diseases

2021 ◽  
pp. 429-472
Author(s):  
Dan Funck Jensen ◽  
◽  
Mukesh Dubey ◽  
Birgit Jensen ◽  
Magnus Karlsson ◽  
...  
Keyword(s):  
Biological Control ◽  
Plant Protection ◽  
Control Plant ◽  
Plant Diseases ◽  
Bumble Bees ◽  
Key Factors ◽  
Clonostachys Rosea ◽  
Protection Strategies ◽  
Rhizosphere Competence ◽  
Potential Use

The fungus Clonostachys rosea was recognized as an aggressive parasite on other fungi already in the late 1950s. Research into its potential use in biological control of plant diseases soon followed. Today, there are several commercial products based on C. rosea available for biocontrol applications worldwide. Although its mycoparasitic ability has attracted a lot of interest, C. rosea is now viewed as an ecological generalist whose lifestyle also includes plant endophytism, rhizosphere competence and polyphagous ability. Protocols for producing high amounts of C. rosea spores are available for both solid state and liquid fermentation. Low temperature and low moisture content are key factors that influence the shelf life of C. rosea propagules. Products based on C. rosea can be delivered to flowers using bumble bees, applied by spraying or as seed dressing or by incorporation into the soil. Clonostachys rosea is today an established factor in sustainable plant protection strategies.

scholarly journals The Preventive Effects of Asparagus officinalis Extract on Sodium Selenite-Induced Cataractogenesis in Experimental Animal Models

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Momammad Azadbakht ◽  
Mohammad Asghari ◽  
Kiumars Nowroozpoor Dailami ◽  
Ali Davoodi ◽  
Amirhossein Ahmadi
Keyword(s):  
Sodium Selenite ◽  
Reductase Activity ◽  
Control Plant ◽  
Asparagus Officinalis ◽  
Safe Alternative ◽  
Hydroalcoholic Extract ◽  
Plant Groups ◽  
Malondialdehyde Content ◽  
Glutathione Reductase Activity ◽  
And Control

Background and Objectives. Cataract is the leading cause of blindness worldwide. Although surgery is now considered the most successful cure, the development of alternative treatments is needed due to postsurgical complications. Oxidative stress in the lens is considered to be the most crucial factor in the formation of cataracts. Therefore, the effects of the hydroalcoholic extract of Asparagus officinalis L, a traditional antioxidative plant, on cataract formation of sodium selenite were evaluated. Materials and Methods. Neonatal rats received a single dose of sodium selenite as an intraperitoneal injection (30 μmol/kg) on day 10 postnatal to induce cataract. Animals were then posttreated with various oral solutions of A. officinalis extract at 200 mg/kg or 400 mg/kg once daily on days 10–16 postnatal. Cataract was evaluated by slit-lamp, and lens opacification was analyzed in each group 24 hours after the last treatment at day seven postadministration of the extracts or vehicle. The total protein concentration of lenses, glutathione reductase activity as the glutathione antioxidant capacity, and malondialdehyde content as a marker of lipid peroxidation were further assessed in removed rat lenses on day 30 postnatal. Results. All lenses in the healthy and control plant groups were clear. Sodium selenite significantly increased cataract grade (2.8 ± 0.2) when compared to the healthy group p = 0.001 . However, cataract grades were decreased considerably as 1.9 ± 0.72 and 1.5 ± 0.85 in groups that received 200 mg/kg and 400 mg/kg oral extract of A. officinalis, respectively. A. officinalis extract also restored all abnormalities of biochemical markers induced by sodium selenite. Conclusion. Our data suggest that A. officinalis could be a promising candidate as a safe alternative treatment in cataracts upon further clinical trials. This effect is probably associated with the antioxidant activity of A. officinalis.

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