scholarly journals Effect of Ascorbigen and 1′-Methylascorbigen on Disease Resistance of Bean Plants to Uromyces Phaseoli

2011 ◽  
Vol 6 (5) ◽  
pp. 1934578X1100600
Author(s):  
György Kátay ◽  
Ernő Tyihák ◽  
Edith Kátay
Keyword(s):  
Immune Response ◽  
Disease Resistance ◽  
Fungal Pathogen ◽  
Time Interval ◽  
Chemical Pretreatment ◽  
Reaction Products ◽  
Phaseolus Vulgaris L ◽  
Methyl Group ◽  
Bean Plants ◽  
Uromyces Phaseoli

The effect of ascorbigen and 1′-methylascorbigen on the disease resistance of bean (Phaseolus vulgaris L.,. cv. Debreceni Tarka) to the fungal pathogen Uromyces phaseoli Pers. is reported. Contrary to ascorbigen, pretreatment of bean plants with 1′-methylascorbigen, as in the case of other endogenous N-, O- and S-methyl compounds, induced the double immune response leading to the biochemical immunization of plants. The effectiveness of protection depended on the dosage of the applied 1′-methylascorbigen and on the time interval between the chemical pretreatment and inoculation. Results of our greenhouse experiments revealed, in accordance with previous results, that the presence of the N-methyl group in the 1′-methylascorbigen molecule is the precondition of the effect, and formaldehyde formed from this N-methyl group and its reaction products (e.g. singlet oxygen, ozone) can have a determining role in the manifestation of the effect.

Some metabolic responses of bush bean plants to a subherbicidal concentration of certain s-triazine compounds

1970 ◽  
Vol 48 (12) ◽  
pp. 2213-2217 ◽  
Author(s):  
B. Singh ◽  
D. K. Salunkhe
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reduction ◽  
Adenosine Triphosphatase ◽  
Acid Synthesis ◽  
Controlled Environment ◽  
Transaminase Activity ◽  
Starch Phosphorylase ◽  
Phaseolus Vulgaris L ◽  
Bean Plants ◽  
Bush Bean

A solution containing 0.5 p.p.m. of atrazine, simazine, igran, or GS-14254 with 0.2% triton-B 1956 was applied to the foliage of 11-day-old seedlings of bush beans, Phaseolus vulgaris L. cultivar Tender-green, growing on vermiculite in a controlled environment. The activities of nitrate reductase, glutamic-pyruvic transaminase, α-amylase, starch phosphorylase, and adenosine triphosphatase were determined 5,10, and 20 days after treatment. In general, the activity of each of the five enzymes was stimulated by the treatment. The results suggest that protein increase following the application of.s-triazines to bean plants may stem in part from an enhanced rate of amino acid formation resulting from the induced increment in nitrate reductase and transaminase activity. The application of these chemicals also creates a metabolic condition favorable for greater use of carbohydrates needed for nitrate reduction and protein synthesis, and as a source of organic acid synthesis.

Omega-3 fatty acids effectively modulate growth performance, immune response, and disease resistance in fish against multiple stresses

Aquaculture ◽  
2021 ◽  
pp. 737506
Author(s):  
Neeraj Kumar ◽  
Nitish Kumar Chandan ◽  
Sanjay Kumar Gupta ◽  
Shashi Bhushan ◽  
Pooja Bapurao Patole
Keyword(s):  
Fatty Acids ◽  
Immune Response ◽  
Disease Resistance ◽  
Growth Performance ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Multiple Stresses

scholarly journals Soil Application of Effective Microorganisms (EM) Maintains Leaf Photosynthetic Efficiency, Increases Seed Yield and Quality Traits of Bean (Phaseolus vulgaris L.) Plants Grown on Different Substrates

2019 ◽  
Vol 20 (9) ◽  
pp. 2327 ◽  
Author(s):  
Marcello Iriti ◽  
Alessio Scarafoni ◽  
Simon Pierce ◽  
Giulia Castorina ◽  
Sara Vitalini
Keyword(s):  
Phaseolus Vulgaris ◽  
Photosystem Ii ◽  
Sandy Soil ◽  
Photosynthetic Efficiency ◽  
Quality Traits ◽  
Phaseolus Vulgaris L ◽  
Effective Microorganisms ◽  
Yield And Quality ◽  
Bean Plants

EM (effective microorganisms) is a biofertilizer consisting of a mixed culture of potentially beneficial microorganisms. In this study, we investigated the effects of EM treatment on leaf in vivo chlorophyll a fluorescence of photosystem II (PSII), yield, and macronutrient content of bean plants grown on different substrates (nutrient rich substrate vs. nutrient poor sandy soil) in controlled environmental conditions (pot experiment in greenhouse). EM-treated plants maintained optimum leaf photosynthetic efficiency two weeks longer than the control plants, and increased yield independent of substrate. The levels of seed nutritionally-relevant molecules (proteins, lipids, and starch) were only slightly modified, apart from the protein content, which increased in plants grown in sandy soil. Although EM can be considered a promising and environmentally friendly technology for sustainable agriculture, more studies are needed to elucidate the mechanism(s) of action of EM, as well as its efficacy under open field conditions.

scholarly journals Pea–Fusarium solani Interactions Contributions of a System Toward Understanding Disease Resistance

2008 ◽  
Vol 98 (4) ◽  
pp. 372-379 ◽  
Author(s):  
Lee A. Hadwiger
Keyword(s):  
Immune Response ◽  
Transcription Factor ◽  
Disease Resistance ◽  
Fusarium Solani ◽  
Nonhost Resistance ◽  
Chromatin Conformation ◽  
Resistance Response ◽  
Resistance Components ◽  
Pathogenesis Related ◽  
Molecular Aspects

This mini-review points to the usefulness of the pea–Fusarium solani interaction in researching the biochemical and molecular aspects of the nonhost resistance components of peas. This interaction has been researched to evaluate the resistance roles of the phytoalexin, pisatin, the cuticle barrier, and the activation of the nonhost resistance response. Concurrently, evaluations of associated signaling processes and the tools possessed by the pathogen to contend with host obstacles were included. The properties of some pathogenesis-related genes of pea and their regulation and contribution to resistance are discussed. A proposed action of two biotic elicitors on both chromatin conformation and the architectural transcription factor, HMG A, is presented and includes time lines of events within the host immune response.

scholarly journals Studies on the interaction of growth regulators with potassium ions in some physiological processes in bean (Phaseolus vulgaris L.). III The effect of growth regulators on growth, chlorophyll level and transpiration depending on potassium concentration

2014 ◽  
Vol 55 (4) ◽  
pp. 577-588
Author(s):  
Jadwiga Stopińska
Keyword(s):  
Growth Regulators ◽  
Potassium Concentration ◽  
Leaf Growth ◽  
Inhibitory Effect ◽  
Physiological Effect ◽  
Potassium Ions ◽  
Phaseolus Vulgaris L ◽  
Physiological Processes ◽  
Bean Plants ◽  
Chlorophyll Level

Leaf growth and chlorophyll level in GA<sub>3</sub>-treated bean, and leaf growth and transpiration intensity in ABA-treated bean plants were studied at two potassium concentrations in the medium (1 and 3 mM KNO<sub>3</sub>). The plants were grown on Hoagland's solution and growth regulators were applied to the shoot growth apexes. Both GA<sub>3</sub> and K<sup>+</sup> ions were found to stimulate growth of primary leaves and increase their potassium amount. GA<sub>3</sub> contrary to K<sup>+</sup> slightly decreased the potassium content in leaves Both factors reduced the chlorophyll content but did not affect the total chlorophyll amount in these organs Interaction between GA<sub>3</sub> and K<sup>+</sup> ions was of additive nature. The effect of ABA and K<sup>+</sup> ions on growth of both kinds of leaves and on the amount and content of potassium in them were antagonistic. The inhibitory effect of the hormone was stronger at higher potassium concentration in the medium. Either factor reduced transpiration intensity in leaves, however, the inhibitory effect of the growth regulator was stronger at lower potassium concentration. The potassium level modified both the physiological effect of the regulators and the sensitivity of bean particularly to ABA.

scholarly journals Investigations on the pathogenicity of Helminthosporium sorokinianum Sacc. in relation to Phaseolus vulgaris L.

2014 ◽  
Vol 10 (2) ◽  
pp. 283-293
Author(s):  
Barbara Łacicowa ◽  
Zofia Machowicz
Keyword(s):  
Phaseolus Vulgaris ◽  
Root System ◽  
Field Experiments ◽  
Phaseolus Vulgaris L ◽  
Bean Plants ◽  
Before And After

The results obtained in pot and field experiments have shown that <i>Helminthosporium sorokinianum</i> is able to infect bean plants. The cotyledons and roots of shoots during the first three weeks of growth are attacked the most frequently. Dark brown spots occur on the above-mentined organs. The infection of roots and cotyledonsof shoots is responsible for gangrene both before and after germination. Infected plants which remain alive only show symptoms of infection in the root system. The infection of roots by <i>H. sorokinianum</i> in older plants is detromental to growth and causes a decrease in the vield obtained from bean plants.

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