Dysfunctionality of the Xylem inOlea europaeaL. Plants Associated with the Infection Process byVerticillium dahliaeKleb. Role of Phenolic Compounds in Plant Defense Mechanism

2007 ◽  
Vol 55 (9) ◽  
pp. 3373-3377 ◽  
Author(s):  
Ana G. Báidez ◽  
Pedro Gómez ◽  
José A. Del Río ◽  
Ana Ortuño
Keyword(s):  
Phenolic Compounds ◽  
Plant Defense ◽  
Defense Mechanism ◽  
Infection Process ◽  
Plant Defense Mechanism

Role of fungal elicitors in plant defense mechanism

2020 ◽  
pp. 143-158
Author(s):  
Zalak M. Patel ◽  
Rita Mahapatra ◽  
Siva Satya Mohan Jampala
Keyword(s):  
Plant Defense ◽  
Defense Mechanism ◽  
Fungal Elicitors ◽  
Plant Defense Mechanism

scholarly journals Research on the involment of phenoloics in the defence of horticultural plants

2016 ◽  
Vol 107 (1) ◽  
pp. 183 ◽  
Author(s):  
Ana SLATNAR ◽  
Maja MIKULIČ-PETKOVŠEK ◽  
Robert VEBERIČ ◽  
Franci ŠTAMPAR
Keyword(s):  
Phenolic Compounds ◽  
Plant Defense ◽  
Defense Mechanisms ◽  
Defense Mechanism ◽  
Plant Protection ◽  
Research Work ◽  
Primary Metabolism ◽  
Infection Site ◽  
Horticultural Plants

Phenolic compounds are not directly involved in the primary metabolism of plants but possess a number of important roles: (1) serving as attractants for pollinators and various animals, involved in the transfer of seeds, (2) plant protection from herbivores and against pathogen infection, (3) defining plant-plant relationships and the symbiosis between plants and microbes. The present review of our research work stresses the role of phenolic compounds in the defense mechanism against different fungi and bacteria. It has been established, that the content of phenolics is greatly affected by the infection with pathogenic organisms. Studies on several horticultural plants have demonstrated that the response to infection differs among the analyzed plant species. Generally, an increase of phenolic compounds can be expected in tissues near the infection site. The comparison of healthy and infected tissue reflects an increase of phenolics in infected tissues. Higher levels of all analyzed phenolic groups have been measured in the latter, with the exception of the anthocyanins. Based on the findings of many-year research studies, it can be concluded that phenolic compounds are involved in the plant defense mechanisms, but the response varies among species.

Role of Aptamers in Plant Defense Mechanism Against Viral Diseases

Aptamers ◽  
2019 ◽  
pp. 169-174
Author(s):  
Pawan K. Yadav ◽  
Sunil Kumar ◽  
Sanjay Yadav ◽  
Sandeep Kumar
Keyword(s):  
Plant Defense ◽  
Defense Mechanism ◽  
Viral Diseases ◽  
Plant Defense Mechanism

scholarly journals Efficiency of microbial bio-agents as elicitors in plant defense mechanism under biotic stress: A review

2021 ◽  
pp. 100054
Author(s):  
Andleeb Zehra ◽  
Namita Anant Raytekar ◽  
Mukesh Meena ◽  
Prashant Swapnil
Keyword(s):  
Plant Defense ◽  
Biotic Stress ◽  
Defense Mechanism ◽  
Plant Defense Mechanism

scholarly journals Strong Sour Tamarind Flavor of Methyl-2,3,4- trihydroxyhexanoate, a new compound isolated from Leaves of Tamarindus indica, L. plays a role in plant defense mechanisms

2012 ◽  
pp. 26-44
Author(s):  
Suprana Biswas ◽  
Nabanita Chakraborty ◽  
Supriya Chakraborty
Keyword(s):  
Antioxidant Activity ◽  
Plant Defense ◽  
Inhibitory Activity ◽  
Defense Mechanisms ◽  
Defense Mechanism ◽  
Aspergillus Tamarii ◽  
Methanol Fraction ◽  
Wide Range ◽  
Plant Defense Mechanism ◽  
Defensive Activity

Flavoring compounds of plants play a significant role in plant defense mechanism. Compound responsible for strong sour tamarind flavor has been isolated and identified from Methanol fraction of tamarind leaves (TrMF). Chromatographic and spectral analyses of TrMF revealed the compound to be methyl 2,3,4- trihydroxyhexanoate. This compound showed a strong antioxidant activity as well as strong antimicrobial activity. It showed significant antioxidant activity with Ic50 value of 2.5μg/ml whereas tert-butyl-1-hydroxytoluene and ascorbic acid revealed 26.0μg/ml and 5.0μg/ml, respectively. It also revealed strong inhibitory activity against Aspergellosis disease-causing fungi namely; Aspergillus fumigatus, Aspergillus tamarii and Aspergillus niger at all concentrations. Streptococcus aureus and Escherichia coli were much more sensitive to methyl-trihydroxy-hexanoate at all concentrations than Pseudomonas aeruginosa. This pure compound exhibited concentration dependent inhibitory and stimulatory activity on rice seeds germination and seedling growth. It showed strong inhibitory activity up to 62.5ppm concentration and below this concentration the effect was stimulatory. Methyl- trihydroxyhexanoate exhibited wide range of defensive activity against microbes and crop seeds and also possesses potent antioxidative activity. Thus play an important role in plant defense mechanism and can be utilized as a valuable source of bio-herbicides and pesticides.

Review of Research on Fungal Pathogen Attack and Plant Defense Mechanism against Pathogen

2015 ◽  
Vol 2 (8) ◽  
pp. 197-208 ◽  
Author(s):  
Raheleh Dehgahi ◽  
Sreeramanan Subramaniam ◽  
Latiffah Zakaria ◽  
Alireza Joniyas ◽  
Farid Beiki Firouzjahi ◽  
...  
Keyword(s):  
Plant Defense ◽  
Fungal Pathogen ◽  
Defense Mechanism ◽  
Plant Defense Mechanism ◽  
Pathogen Attack
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