Enterobacter ludwigii, isolated from the gut microbiota of Helicoverpa zea, promotes tomato plant growth and yield without compromising anti-herbivore defenses

2018 ◽  
Vol 13 (2) ◽  
pp. 271-278 ◽  
Author(s):  
Qinjian Pan ◽  
Ikkei Shikano ◽  
Kelli Hoover ◽  
Tong-Xian Liu ◽  
Gary W. Felton
Keyword(s):  
Plant Growth ◽  
Gut Microbiota ◽  
Tomato Plant ◽  
Helicoverpa Zea ◽  
Growth And Yield ◽  
Enterobacter Ludwigii ◽  
Herbivore Defenses

scholarly journals Root Zone Temperature as Modified by Plastic Mulches Affect the Appearance of First Systemic Symptoms of Tomato Spotted Wilt and Fruit Yield in Tomato

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1005E-1006
Author(s):  
Juan C. Diaz-Perez ◽  
Ron Gitaitis ◽  
Bikash Mandal
Keyword(s):  
Plant Growth ◽  
Tomato Plant ◽  
Root Zone ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Plastic Mulch ◽  
Root Zone Temperature ◽  
Tomato Spotted Wilt ◽  
The Mean ◽  
Zone Temperature

Tomato spotted wilt (TSW) is a serious constraint to tomato production in various regions of the world. The effect of TSW on tomato yield is largely influenced by time of infection. Early infection usually results in severe stunting of the seedling and even death of the plant. Plastic mulches have been found to affect both the incidence of TSW, and plant growth and yield of tomato. The objective of this study was to determine the effect of root zone temperature (RZT) as affected by plastic mulch on the timing of appearance of first TSW symptoms, vegetative top fresh weight (FW) and fruit FW in tomato. Under natural TSW infection as well as in artificially inoculated plants, vegetative top FW and fruit FW were both linearly related with number of days after transplanting (DAT) the plants were free from TSW symptoms. The plants grown on black mulch during the fall showed earlier appearance of TSW symptoms, and had significantly reduced vegetative growth and fruit yields. The mean RZT during the first 42 DAT—the time before the plants reached full canopy closure—significantly affected the timing of first appearance of TSW symptoms, tomato plant growth and fruit yield. Vegetative top FW (optimal RZT = 24.1 °C) and fruit FW (26.9 °C) fitted the quadratic relationships with the mean RZT during the first 42 DAT. In conclusion, utilization of plastic mulches that created conditions of RZT stress, particularly heat stress, resulted in reduced plant growth and yield and may predispose the plants to earlier expression of TSW symptoms compared to plants grown under RZTs more favorable to tomato plant growth.

scholarly journals The influence of NANO-GRO® organic stimulator on the yielding and fruit quality of field tomato (Lycopersicon esculentum Mill.)

2016 ◽  
Vol 28 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Elżbieta Jędrszczyk ◽  
Anna M. Ambroszczyk
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Growth ◽  
Significant Influence ◽  
Tomato Plant ◽  
Growth Yield ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Lycopene Content

AbstractThe effect of different methods of NANO-GRO®application on tomato plant growth and yield and its quality was determined. Four treatments were used: soaking seeds with NANO-GRO®, plants spraying, double application: soaking seeds + plants spraying and a control without NANO-GRO®. The cultivar Mieszko F1was used for the study. A significant influence of NANO-GRO®application method on tomato plant growth, yield and quality was observed. Pre-sowing application positively influenced plant height and the thickness of the stems. The highest total and marketable yield was observed in plants whose seeds were soaked with NANO-GRO®(respectively 87.02 and 53.13 t ha−1) and in those with double application (respectively 73.48 and 45.67 t ha−1). The lowest marketable yield was found in the plants from the control (37.01 t ha−1). The highest lycopene content compared to the control was measured in fruits from plants sprayed with NANO-GRO®.

MORPHOLOGICAL AND BIOCHEMICAL RESPOSES OF COW PEA (CV. PUSA BARSATI) GROWN ON FLY ASH AMENDED SOIL IN PRESENCE AND ABSENCE OF MELOIDOGYNE JAVANICA AND RHIZOBIUM LEGUMINOSARUM

1970 ◽  
Vol 17 ◽  
pp. 17-22 ◽  
Author(s):  
Kamal Singh ◽  
A. A. Khan ◽  
Iram Khan ◽  
Rose Rizvi ◽  
M. Saquib
Keyword(s):  
Fly Ash ◽  
Plant Growth ◽  
Rhizobium Leguminosarum ◽  
Growth Yield ◽  
Maximum Growth ◽  
Meloidogyne Javanica ◽  
Growth And Yield ◽  
Negative Effects ◽  
Positive Effects ◽  
Insignificant Difference

Plant growth, yield, pigment and protein content of cow-pea were increased significantly at lower levels (20 and 40%) of fly ash but reverse was true at higher levels (80 and 100%). Soil amended by 60% fly ash could cause suppression in growth and yield in respect to 40% fly ash treated cow-pea plants but former was found at par with control (fly ash untreated plants). Maximum growth occurred in plants grown in soil amended with 40% fly ash. Nitrogen content of cow-pea was suppressed progressively in increasing levels of fly ash. Moreover,  Rhizobium leguminosarum  influenced the growth and yield positively but Meloidogyne javanica caused opposite effects particularly at 20 and 40% fly ash levels. The positive effects of R. leguminosarum were marked by M. javanica at initial levels. However, at 80 and 100% fly ash levels, the positive and negative effects of R. leguminosarum and/or M. javanica did not appear as insignificant difference persist among such treatments.Key words:  Meloidogyne javanica; Rhizobium leguminosarum; Fly ash; Growth; YieldDOI: 10.3126/eco.v17i0.4098Ecoprint An International Journal of Ecology Vol. 17, 2010 Page: 17-22 Uploaded date: 28 December, 2010  

Zinc oxide nanoparticles help to enhance plant growth and alleviate abiotic stress: A review

2020 ◽  
Vol 21 ◽  
Author(s):  
Mohammad Faizan ◽  
Fangyuan Yu ◽  
Chen Chen ◽  
Ahmad Faraz ◽  
Shamsul Hayat
Keyword(s):  
Zinc Oxide ◽  
Plant Growth ◽  
Abiotic Stresses ◽  
Zinc Oxide Nanoparticles ◽  
Growth And Yield ◽  
Oxide Nanoparticles ◽  
Main Concern ◽  
Negative Effects ◽  
Zno Nps ◽  
Agricultural Yield

: Abiotic stresses arising from atmosphere change belie plant growth and yield, leading to food reduction. The cultivation of a large number of crops in the contaminated environment is a main concern of environmentalists in the present time. To get food safety, a highly developed nanotechnology is a useful tool for promoting food production and assuring sustainability. Nanotechnology helps to better production in agriculture by promoting the efficiency of inputs and reducing relevant losses. This review examines the research performed in the past to show how zinc oxide nanoparticles (ZnO-NPs) are influencing the negative effects of abiotic stresses. Application of ZnO-NPs is one of the most effectual options for considerable enhancement of agricultural yield globally under stressful conditions. ZnO-NPs can transform the agricultural and food industry with the help of several innovative tools in reversing oxidative stress symptoms induced by abiotic stresses. In addition, the effect of ZnO-NPs on physiological, biochemical, and antioxidative activities in various plants have also been examined properly. This review summarizes the current understanding and the future possibilities of plant-ZnO-NPs research.

scholarly journals Crude Citric Acid of Trichoderma asperellum: Tomato Growth Promotor and Suppressor of Fusarium oxysporum f. sp. lycopersici

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 222
Author(s):  
Abdulaziz A. Al-Askar ◽  
WesamEldin I. A. Saber ◽  
Khalid M. Ghoneem ◽  
Elsayed E. Hafez ◽  
Amira A. Ibrahim
Keyword(s):  
Citric Acid ◽  
Plant Growth ◽  
Organic Acid ◽  
Wilt Disease ◽  
Growth And Yield ◽  
Total Phenolic ◽  
Growth Promoters ◽  
Chlorophyll Pigments

Presently, the bioprocessing of agricultural residues to various bioactive compounds is of great concern, with the potential to be used as plant growth promoters and as a reductive of various diseases. Lycopersiconesculentum, one of the most consumed crops in the human diet, is attacked by Fusarium wilt disease, so the main aim is to biocontrol the pathogen. Several fungal species were isolated from decayed maize stover (MS). Trichodermaasperellum was chosen based on its organic acid productivity and was molecularly identified (GenBank accession number is MW195019). Citric acid (CA) was the major detected organic acid by HPLC. In vitro, CA of T.asperellum at 75% completely repressed the growth of Fusariumoxysporum f. sp. lycopersici (FOL). In vivo, soaking tomato seeds in CA enhanced the seed germination and vigor index. T. asperellum and/or its CA suppressed the wilt disease caused by FOL compared to control. There was a proportional increment of plant growth and yield, as well as improvements in the biochemical parameters (chlorophyll pigments, total phenolic contents and peroxidase, and polyphenol oxidase activities), suggesting targeting both the bioconversion of MS into CA and biological control of FOL.

scholarly journals Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 77 ◽  
Author(s):  
Aung Zaw Htwe ◽  
Seinn Moh Moh ◽  
Khin Myat Soe ◽  
Kyi Moe ◽  
Takeo Yamakawa
Keyword(s):  
Nitrogen Fixation ◽  
Plant Growth ◽  
Seed Yield ◽  
Mung Bean ◽  
Growth And Yield ◽  
Vegetable Crops ◽  
N Application ◽  
Npk Uptake ◽  
Phosphorus And Potassium ◽  
Leguminous Crops

The use of biofertilizers is important for sustainable agriculture, and the use of nodule bacteria and endophytic actinomycetes is an attractive way to enhance plant growth and yield. This study tested the effects of a biofertilizer produced from Bradyrhizobium strains and Streptomyces griseoflavus on leguminous, cereal, and vegetable crops. Nitrogen fixation was measured using the acetylene reduction assay. Under N-limited or N-supplemented conditions, the biofertilizer significantly promoted the shoot and root growth of mung bean, cowpea, and soybean compared with the control. Therefore, the biofertilizer used in this study was effective in mung bean, cowpea, and soybean regardless of N application. In this study, significant increments in plant growth, nodulation, nitrogen fixation, nitrogen, phosphorus, and potassium (NPK) uptake, and seed yield were found in mung beans and soybeans. Therefore, Bradyrhizobium japonicum SAY3-7 plus Bradyrhizobium elkanii BLY3-8 and Streptomyces griseoflavus are effective bacteria that can be used together as biofertilizer for the production of economically important leguminous crops, especially soybean and mung bean. The biofertilizer produced from Bradyrhizobium and S. griseoflavus P4 will be useful for both soybean and mung bean production.

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