Salicylic Acid—an Important Signal in Plants

Wobbe, Kristin K.; Klessig, Daniel F.

doi:10.1007/978-3-7091-7474-6_7

Cited by 19 publications

(9 citation statements)

References 179 publications

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“…Phenolic acids as regulators of plant growth and metabolism show inhibitory character, in a way as a counterweight to stimulating activities of auxins, brassinosteroids, cytokinins and gibberellins clusive from SA can enter in suitable interaction with auxins behind mediation of indole-3-acetic oxidase and participate in regulation of processes of growth and metabolism of vascular plant (Larson 1989, Raskin 1992a, b, Pierpoint 1994, Wobbe and Klessig 1996, Zhang and Klessig 1997.…”

Section: Discussionmentioning

confidence: 99%

“…SA also has a regulatory effect on metabolic reactions of H202 in plants, especially in pathological and stress interactions (Ktessig and Malamy 1994, Durner et aL 1997, Rao et al 1997, Murphy et aL 1999, Pietrese and van Loon 1999. Other effects of SA and its regulatory role in plant physiology include inhibition of ethylene biosynthesis and an increase in photosynthesis rate and chlorophylls content in soybean (Raskin 1992a, 1995, Wobbe and Klessig 1996.…”

Section: Introductionmentioning

confidence: 95%

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Activity of salicylic acid on the growth and biochemism of Chlorella vulgaris Beijerinck

et al. 2002

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This study was conducted to investigate the influence of salicylic acid (SA) on the growth and changes of nucleic acids, protein, photosynthetic pigments, sugar content and photosynthesis levels in the green alga Chlorella vulgaris Beijerinck (Chlorophyceae). The most significant changes in the content of nucleic acids and proteins was observed at the concentration [ 0 -4 M SA between 8 and 12 day of cultivation. This concentration of SA increased the number of cells (about 40 %) and content of proteins (about 60 %) and its secretion to the medium. The slight stimulation of protein secretion occurred on the 12th 4 day of cultivation at concentration 10 M, while in the range of 10 -5 M to 10 -6 M the protein secretion was inhibited. SA also stimulated the content of nucleic acids, especially RNA by 20-60 %, compared with the control. The most stimulating influence upon the contents of chlorophylls a and b (50--70 %), total carotenoids (25-57 %), sugar (27-.41%) and intensity of net photosynthesis (~ 8-33 %) was found at 10 4 M of SA, At the 6 concentration of 10-M SA the slight inhibition of growth and biochemical activity of the algae was recorded at the first days of cultivation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Activity of salicylic acid on the growth and biochemism of Chlorella vulgaris Beijerinck

et al. 2002

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“…1997;Hunt and Ryals 1996;Klessig and Malamy 1994;Ryals et al . 1996;Wobbe and Klessig 1996). So far, however, there is only scarce information about the mode of action of SA in SAR induction.…”

Section: Introductionmentioning

confidence: 99%

Salicylic acid has a dual role in the activation of defence‐related genes in parsley

1998

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SummarySystemic acquired resistance is an inducible plant defence state, the activation of which depends mostly on the accumulation of salicylic acid (SA). During the past several years, it has been demonstrated that pretreatment of cultured parsley cells with SA potentiates the elicitation of several defence responses that are local in whole plants, including the accumulation of phenylpropanoid products. Here it is reported that while anionic peroxidase and mannitol dehydrogenase encoding genes are directly responsive to SA, pretreating parsley cells with SA not only enhances elicitation of the phenylpropanoid genes phenylalanine ammonia-lyase and 4-coumarate:CoA ligase but also of genes for PR-10 and a hydroxyproline-rich glycoprotein. Enhanced induction of these genes was seen at low levels of endogenous free SA. Enhancement of phenylalanine ammonia-lyase gene activation was proportional to the length of SA pretreatment. Furthermore, the ability of SA analogues to both potentiate elicited and directly induce defence gene activation correlated with their biological activity to promote plant disease resistance. In summary, these results emphasize that SA has at least a dual role in plant defence gene activation.

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“…This phenomenon strongly depends on the accumulation of SA (Durner et al, 1997) and is named SAR (for recent reviews, see Ryals et al, 1996;Wobbe and Klessig, 1996;Sticher et al, 1997). In tobacco and Arabidopsis establishment of SAR is accompanied by the activation of SAR genes (Ward et al, 1991), including those encoding some of the PR proteins (Cutt and Klessig, 1992;Stintzi et al, 1993).…”

mentioning

confidence: 99%

A Benzothiadiazole Primes Parsley Cells for Augmented Elicitation of Defense Responses

1998

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Systemic acquired resistance is an important component of the disease-resistance arsenal of plants, and is associated with an enhanced potency for activating local defense responses upon pathogen attack. Here we demonstrate that pretreatment with benzothiadiazole (BTH), a synthetic activator of acquired resistance in plants, augmented the sensitivity for low-dose elicitation of coumarin phytoalexin secretion by cultured parsley (Petroselinum crispum L.) cells. Enhanced coumarin secretion was associated with potentiated activation of genes encoding Phe ammonia-lyase (PAL). The augmentation of PAL gene induction was proportional to the length of pretreatment with BTH, indicating time-dependent priming of the cells. In contrast to the PAL genes, those for anionic peroxidase were directly induced by BTH in the absence of elicitor, thus confirming a dual role for BTH in the activation of plant defenses. Strikingly, the ability of various chemicals to enhance plant disease resistance correlated with their capability to potentiate parsley PAL gene elicitation, emphasizing an important role for defense response potentiation in acquired plant disease resistance.

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Salicylic Acid—an Important Signal in Plants

Cited by 19 publications

References 179 publications

Activity of salicylic acid on the growth and biochemism of Chlorella vulgaris Beijerinck

Activity of salicylic acid on the growth and biochemism of Chlorella vulgaris Beijerinck

Salicylic acid has a dual role in the activation of defence‐related genes in parsley

A Benzothiadiazole Primes Parsley Cells for Augmented Elicitation of Defense Responses

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