Salicylic Acid as a Defense-Related Plant Hormone

2007 ◽  
pp. 277-321 ◽  
Author(s):  
Tomonori Kawano ◽  
Takuya Furuichi
Keyword(s):  
Salicylic Acid ◽  
Plant Hormone ◽  
Related Plant

Salicylic Acid - A Novel Plant Hormone

2020 ◽  
Vol 9 (3) ◽  
pp. 234
Author(s):  
Poonam Meena ◽  
Sampat Nehra ◽  
P.C. Trivedi
Keyword(s):  
Salicylic Acid ◽  
Plant Hormone

scholarly journals Polyamine-Induced Hormonal Changes in eds5 and sid2 Mutant Arabidopsis Plants

2019 ◽  
Vol 20 (22) ◽  
pp. 5746 ◽  
Author(s):  
Tajti ◽  
Hamow ◽  
Majláth ◽  
Gierczik ◽  
Németh ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Plant Hormones ◽  
Plant Hormone ◽  
Polyamine Metabolism ◽  
Hormonal Changes ◽  
Hormone Metabolism ◽  
Hormone Synthesis ◽  
The Individual ◽  
Induced Changes ◽  
Gene Expression Levels

Polyamines are multifaceted compounds which play a role in regulating plant growth and stress tolerance in interactions with plant hormones. The aim of the present study was to reveal how exogenous polyamines influence the synthesis of salicylic acid, with a special emphasis on the effect of salicylic acid deficiency on the polyamine metabolism and polyamine-induced changes in other plant hormone contents. Our hypothesis was that the individual polyamines induced different changes in the polyamine and salicylic acid metabolism of the wild type and salicylic acid-deficient Arabidopsis mutants, which in turn influenced other hormones. To our knowledge, such a side-by-side comparison of the influence of eds5-1 and sid2-2 mutations on polyamines has not been reported yet. To achieve our goals, wild and mutant genotypes were tested after putrescine, spermidine or spermine treatments. Polyamine and plant hormone metabolism was investigated at metabolite and gene expression levels. Individual polyamines induced different changes in the Arabidopsis plants, and the responses were also genotype-dependent. Polyamines upregulated the polyamine synthesis and catabolism, and remarkable changes in hormone synthesis were found especially after spermidine or spermine treatments. The sid2-2 mutant showed pronounced differences compared to Col-0. Interactions between plant hormones may also be responsible for the observed differences.

scholarly journals Quantitative analysis of changes in the phosphoproteome of maize induced by the plant hormone salicylic acid

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Liuji Wu ◽  
Xiuli Hu ◽  
Shunxi Wang ◽  
Lei Tian ◽  
Yanjie Pang ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Quantitative Analysis ◽  
Plant Hormone

scholarly journals Plant Hormone Salicylic Acid Produced by a Malaria Parasite Controls Host Immunity and Cerebral Malaria Outcome

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0140559 ◽  
Author(s):  
Ryuma Matsubara ◽  
Hiroka Aonuma ◽  
Mikiko Kojima ◽  
Michiru Tahara ◽  
Syed Bilal Ahmad Andrabi ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Cerebral Malaria ◽  
Malaria Parasite ◽  
Plant Hormone ◽  
Host Immunity

scholarly journals Systemic induction of salicylic acid-related plant defences in potato in response toRhizoctonia solaniAG3PT

2017 ◽  
Vol 67 (2) ◽  
pp. 337-348 ◽  
Author(s):  
F. Genzel ◽  
P. Franken ◽  
K. Witzel ◽  
R. Grosch
Keyword(s):  
Salicylic Acid ◽  
Plant Defences ◽  
Systemic Induction ◽  
Related Plant

The Effect of Salicylic Acid and 20 Substituted Molecules on Alleviating Metolachlor Herbicide Injury in Rice (Oryza sativa)

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 317 ◽  
Author(s):  
Xile Deng ◽  
Wenna Zheng ◽  
Xiaomao Zhou ◽  
Lianyang Bai
Keyword(s):  
Salicylic Acid ◽  
Oryza Sativa ◽  
Root Length ◽  
Plant Hormone ◽  
Inhibitory Effect ◽  
Pharmacological Effects ◽  
Rice Seedlings ◽  
Fresh Weight ◽  
Wide Range ◽  
Endogenous Plant

Salicylic acid (SA) is an endogenous plant hormone that has a wide range of pharmacological effects. Studies have indicated that SA has herbicide safening activity. In this study, the herbicide safening activity of SA and 20 substituted molecules were tested on agar-cultured rice. Biological assay results indicated that SA and substituted SA had a low inhibitory effect on the growth of rice seedlings (Oryza sativa), and partially alleviated the effects of metolachlor toxicity. Moreover, at 0.25 mg L−1, the safening effect of compounds l and u lessened the effects of metolachlor phytotoxicity on plant height and fresh weight when compared to the effects of the control, fenclorim. The effects of metolachlor toxicity were reduced on root length due to the safening effects of compounds l, n, and u; these effects were greater than those of fenclorim. These compounds could facilitate the development of novel herbicide safeners.

scholarly journals Salicylic Acid, a Plant Hormone, Suppresses Phytophagous Insect Immune Response by Interrupting HMG-Like DSP1

2021 ◽  
Vol 12 ◽  
Author(s):  
Md. Mahi Imam Mollah ◽  
Hyong Woo Choi ◽  
Inhwa Yeam ◽  
Je Min Lee ◽  
Yonggyun Kim
Keyword(s):  
Immune Response ◽  
Salicylic Acid ◽  
Immune Responses ◽  
Plant Hormone ◽  
High Mobility ◽  
Phytophagous Insect ◽  
Humoral Immune ◽  
Humoral Immune Responses ◽  
Physiological Processes ◽  
Defensive Role

Salicylic acid is a plant hormone that can mediate various plant physiological processes. Salicylic acid can bind to human high mobility group box 1 (HMGB1) and interrupt its role in mediating immune responses. Dorsal switch protein 1 (DSP1) is an insect homolog of HMGB1. In this study, a DSP1 (Se-DSP1) encoded in Spodoptera exigua, a phytophagous insect, was characterized, and its potential role in immune response was explored. Upon bacterial challenge, Se-DSP1 was localized in the nucleus and released into the hemolymph. The released Se-DSP1 could mediate both cellular and humoral immune responses by activating eicosanoid biosynthesis. Salicylic acid could bind to Se-DSP1 with a high affinity. The immune responses of S. exigua were significantly interrupted by SA feeding. Larvae reared on tomatoes with high endogenous SA levels became more susceptible to entomopathogens. Taken together, these results suggest a tritrophic defensive role of plant SA against phytophagous insects.

scholarly journals Effect of Systemic Inducing Resistance and Biostimulant Materials on Apple Scab Using a Detached Leaf Bioassay

2010 ◽  
Vol 36 (1) ◽  
pp. 41-46
Author(s):  
Glynn Percival
Keyword(s):  
Salicylic Acid ◽  
Plant Hormone ◽  
Venturia Inaequalis ◽  
Apple Scab ◽  
Germination Inhibition ◽  
Subsequent Formation ◽  
Detached Leaf ◽  
Triazole Fungicide ◽  
Inducing Resistance ◽  
Appressorium Development

A detached leaf bioassay was used to evaluate several systemic inducing resistance agents, a range of biostimulant products and a conventional triazole fungicide (myclobutanil) on apple scab (Venturia inaequalis) development under laboratory conditions. None of the biostimulant products (seaweed extract, betaine, molasses, humic acid, yucca extract, and plant hormone/vitamin complex) evaluated in this study inhibited germination of apple scab conidia, subsequent formation of appressoria or reduced leaf scab severity compared to water treated controls. All SIR agents used in this investigation (potassium phosphonate, potassium phosphite, harpin protein, salicylic acid, salicylic acid derivative) inhibited germination of apple scab conidia, subsequent formation of appressoria and reduced leaf scab severity. The synthetic fungicide myclobutanil resulted in the greatest levels of germination inhibition, reduced appressorium development and leaf scab severity. Results suggest application of an appropriate SIR product may provide a useful addition to existing methods of apple scab management; however, use of biostimulants as scab protectant compounds appears limited.

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