Effects of salicylic acid on photosynthetic activity and chloroplast morphology under light and prolonged darkness

Abstract Potato virus Y (PVY) is the most economically important viral pathogen of potato worldwide. Different potato cultivars react to the pathogen differently, resulting in resistant, tolerant or disease outcome of the interaction. Here we focus on tolerant interaction between potato cv. Désirée and PVYNTN. To capture the response in its full complexity, we analyzed the dynamic changes on multiple molecular levels, including transcriptomics, sRNAomics, degradomics, proteomics and hormonomics. The analysis was complemented by the measurements of viral accumulation, photosynthetic activity and phenotypisation of the symptoms. Besides cv. Désirée we also studied its transgenic counterpart depleted for the accumulation of salicylic acid (NahG-Désirée). This multiomics analysis provides better insights into the mechanisms leading to tolerant response of potato to viral infection and can be used as a base in further studies of plant immunity regulation.

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The Efficacy of Salicylic Acid Levels on Photosynthetic Activity, Growth, and Essential Oil Content and Composition of Pennyroyal Plants Under Salt Stress

Journal of Plant Growth Regulation ◽

10.1007/s00344-021-10515-y ◽

2021 ◽

Author(s):

Kazem Ghassemi-Golezani ◽

Nasrin Farhadi

Keyword(s):

Salicylic Acid ◽

Salt Stress ◽

Essential Oil ◽

Oil Content ◽

Photosynthetic Activity

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EFFECT OF SALICYLIC ACID ON BIOMASS, PHOTOSYNTHETIC ACTIVITY, NUTRIMENT CONTENT AND PRODUCTIVITY OF JALAPEÑO PEPPER

Revista Chapingo Serie Horticultura ◽

10.5154/r.rchsh.2011.17.039 ◽

2011 ◽

Vol XVII (4) ◽

pp. 63-68 ◽

Cited By ~ 3

Author(s):

Esteban Sánchez-Chávez ◽

◽

Ricardo Barrera-Tovar ◽

Ezequiel Muñoz-Márquez ◽

Damaris Leopoldina Ojeda-Barrios ◽

...

Keyword(s):

Salicylic Acid ◽

Photosynthetic Activity

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Involvement of Ethylene in Reversal of Salt Stress by Salicylic acid in Presence of Sulfur in Mustard (Brassica juncea L.)

10.21203/rs.3.rs-668051/v1 ◽

2021 ◽

Author(s):

Faisal Rasheed ◽

Zebus Sehar ◽

Mehar Fatma ◽

Noushina Iqbal ◽

Asim Masood ◽

...

Keyword(s):

Salicylic Acid ◽

Antioxidant Enzymes ◽

Salt Stress ◽

Brassica Juncea ◽

Photosynthetic Activity ◽

Nacl Stress ◽

Oxygen Species ◽

Ethylene Sensitivity ◽

Enzymes Activity ◽

Ethylene Action

Abstract The involvement of ethylene in reversal of salt stress inhibited photosynthetic activity and growth by salicylic acid (SA) together with sulfur (S) was studied in mustard (Brassica juncea L.) plants. Application of SA (0.5 mM) plus SO42- (2.0 mM) improved photosynthetic activity through markedly increased S-assimilation, antioxidant enzymes activity and optimized ethylene and glutathione (GSH) production for reduced reactive oxygen species (ROS) in plants under 50 mM NaCl stress. As SA acts as an inhibitor of ethylene, and S-assimilation is associated with ethylene synthesis, we tried to figure out the interaction of ethylene in SA and SO42- mediated salt tolerance. The involvement of ethylene was studied by supplementing salt treated plants with 200 µL L-1 ethephon (an ethylene-releasing compound) or 100 µM norbornadiene (NBD, ethylene action inhibitor) to SA and SO42- treatments. The ethephon application to salt treated plants suppressed stress ethylene and optimized ethylene formation and increased ethylene sensitivity to enhance photosynthesis of plants by affecting antioxidative capacity of plants. Application of NBD to plants receiving SA plus SO42- in presence of salt showed inhibited photosynthetic characteristics, stomatal behavior and growth. These plants exhibited minimal capacity of S-assimilation and antioxidant enzymes activity and GSH content. This explained that ethylene was involved in the reversal of salt stress by SA plus SO42-. Thus, the study showed that ethylene intervenes the effect of SA in the presence of SO42- to upregulate the antioxidants that lead to increased S-assimilation, and imparted tolerance to salt in mustard plants.

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