Jasmonic acid distribution and action in plants: regulation during development and response to biotic and abiotic stress.

Creelman, Robert A.; Mullet, John E.

doi:10.1073/pnas.92.10.4114

Cited by 687 publications

(376 citation statements)

References 40 publications

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“…Among the phytohormones, ABA plays the most important role, limiting stomatal apertures under water stress conditions (Pospisilova, 2003;Kim et al, 2010). The lipid-derived hormone JA is also implicated as a key player based on its accumulation during drought and its positive regulatory role in stomatal closure (Creelman and Mullet, 1995;Suhita et al, 2004;Munemasa et al, 2007). Interestingly, however, JA accumulation in drought is not stable; water-stressed soybeans (Glycine max) exhibit a transient increase in JA levels, followed by a decrease to below wild-type levels by 4 h (Creelman and Mullet, 1995).…”

Section: Discussionmentioning

confidence: 99%

“…The lipid-derived hormone JA is also implicated as a key player based on its accumulation during drought and its positive regulatory role in stomatal closure (Creelman and Mullet, 1995;Suhita et al, 2004;Munemasa et al, 2007). Interestingly, however, JA accumulation in drought is not stable; water-stressed soybeans (Glycine max) exhibit a transient increase in JA levels, followed by a decrease to below wild-type levels by 4 h (Creelman and Mullet, 1995). Our data confirms that 5 d after drought stress, JA remains at basal levels, while 12-OPDA levels increase.…”

Section: Discussionmentioning

confidence: 99%

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Functional Convergence of Oxylipin and Abscisic Acid Pathways Controls Stomatal Closure in Response to Drought

et al. 2014

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Membranes are primary sites of perception of environmental stimuli. Polyunsaturated fatty acids are major structural constituents of membranes that also function as modulators of a multitude of signal transduction pathways evoked by environmental stimuli. Different stresses induce production of a distinct blend of oxygenated polyunsaturated fatty acids, "oxylipins." We employed three Arabidopsis (Arabidopsis thaliana) ecotypes to examine the oxylipin signature in response to specific stresses and determined that wounding and drought differentially alter oxylipin profiles, particularly the allene oxide synthase branch of the oxylipin pathway, responsible for production of jasmonic acid (JA) and its precursor 12-oxo-phytodienoic acid (12-OPDA). Specifically, wounding induced both 12-OPDA and JA levels, whereas drought induced only the precursor 12-OPDA. Levels of the classical stress phytohormone abscisic acid (ABA) were also mainly enhanced by drought and little by wounding. To explore the role of 12-OPDA in plant drought responses, we generated a range of transgenic lines and exploited the existing mutant plants that differ in their levels of stress-inducible 12-OPDA but display similar ABA levels. The plants producing higher 12-OPDA levels exhibited enhanced drought tolerance and reduced stomatal aperture. Furthermore, exogenously applied ABA and 12-OPDA, individually or combined, promote stomatal closure of ABA and allene oxide synthase biosynthetic mutants, albeit most effectively when combined. Using tomato (Solanum lycopersicum) and Brassica napus verified the potency of this combination in inducing stomatal closure in plants other than Arabidopsis. These data have identified drought as a stress signal that uncouples the conversion of 12-OPDA to JA and have revealed 12-OPDA as a drought-responsive regulator of stomatal closure functioning most effectively together with ABA.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Functional Convergence of Oxylipin and Abscisic Acid Pathways Controls Stomatal Closure in Response to Drought

et al. 2014

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“…Samples (100 mg) of powdered shoot tissues from control and 1 mM SA-treated plants (one sample each from three biological replicates) were added to 0.8 mL of MeOH with the inclusion of 50 ng 1,3-[ 13 C]-JA internal standard (Creelman and Mullet, 1995) per sample. Samples were extracted by shaking at 250 rpm, 50°C for 30 m, centrifuged 5 m, and supernatants removed to a collection tube.…”

Section: Determination Of Ja Contentmentioning

confidence: 99%

Transcriptional Profiling of Sorghum Induced by Methyl Jasmonate, Salicylic Acid, and Aminocyclopropane Carboxylic Acid Reveals Cooperative Regulation and Novel Gene Responses

et al. 2005

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We have conducted a large-scale study of gene expression in the C4 monocot sorghum (Sorghum bicolor) L. Moench cv BTx623 in response to the signaling compounds salicylic acid (SA), methyl jasmonate (MeJA), and the ethylene precursor aminocyclopropane carboxylic acid. Expression profiles were generated from seedling root and shoot tissue at 3 and 27 h, using a microarray containing 12,982 nonredundant elements. Data from 102 slides and quantitative reverse transcription-PCR data on mRNA abundance from 171 genes were collected and analyzed and are here made publicly available. Numerous gene clusters were identified in which expression was correlated with particular signaling compound and tissue combinations. Many genes previously implicated in defense responded to the treatments, including numerous pathogenesis-related genes and most members of the phenylpropanoid pathway, and several other genes that may represent novel activities or pathways. Genes of the octadecanoic acid pathway of jasmonic acid (JA) synthesis were induced by SA as well as by MeJA. The resulting hypothesis that increased SA could lead to increased endogenous JA production was confirmed by measurement of JA content. Comparison of responses to SA, MeJA, and combined SA+MeJA revealed patterns of one-way and mutual antagonisms, as well as synergistic effects on regulation of some genes. These experiments thus help further define the transcriptional results of cross talk between the SA and JA pathways and suggest that a subset of genes coregulated by SA and JA may comprise a uniquely evolved sector of plant signaling responsive cascades.

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“…For instance, methyl jasmonate (MeJA) is a fragrant compound initially identified from flowers of Jasminum grandiflorum (3), and that is ubiquitously distributed in the plant kingdom (4). MeJA and its free acid jasmonic acid (JA), collectively referred to as jasmonates, are important cellular regulators mediating diverse developmental processes, such as seed germination, flower and fruit development, leaf abscission, and senescence (5). In addition, jasmonates induce plant defense responses against a group of pathogens (6) and mechanical or herbivorous insect-driven wounding (7).…”

mentioning

confidence: 99%

Jasmonic acid carboxyl methyltransferase: A key enzyme for jasmonate-regulated plant responses

Seo

Song

Cheong

et al. 2001

Proc. Natl. Acad. Sci. U.S.A.

668

457

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Methyl jasmonate is a plant volatile that acts as an important cellular regulator mediating diverse developmental processes and defense responses. We have cloned the novel gene JMT encoding an S-adenosyl-L-methionine:jasmonic acid carboxyl methyltransferase (JMT) from Arabidopsis thaliana. Recombinant JMT protein expressed in Escherichia coli catalyzed the formation of methyl jasmonate from jasmonic acid with K m value of 38.5 M. JMT RNA was not detected in young seedlings but was detected in rosettes, cauline leaves, and developing flowers. In addition, expression of the gene was induced both locally and systemically by wounding or methyl jasmonate treatment. This result suggests that JMT can perceive and respond to local and systemic signals generated by external stimuli, and that the signals may include methyl jasmonate itself. Transgenic Arabidopsis overexpressing JMT had a 3-fold elevated level of endogenous methyl jasmonate without altering jasmonic acid content. The transgenic plants exhibited constitutive expression of jasmonate-responsive genes, including VSP and PDF1.2. Furthermore, the transgenic plants showed enhanced level of resistance against the virulent fungus Botrytis cinerea. Thus, our data suggest that the jasmonic acid carboxyl methyltransferase is a key enzyme for jasmonate-regulated plant responses. Activation of JMT expression leads to production of methyl jasmonate that could act as an intracellular regulator, a diffusible intercellular signal transducer, and an airborne signal mediating intra-and interplant communications.

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Jasmonic acid distribution and action in plants: regulation during development and response to biotic and abiotic stress.

Abstract: Jasmonic acid (JA) is a naturally occurring growth regulator found in higher plants. Several

Cited by 687 publications

References 40 publications

Functional Convergence of Oxylipin and Abscisic Acid Pathways Controls Stomatal Closure in Response to Drought

Functional Convergence of Oxylipin and Abscisic Acid Pathways Controls Stomatal Closure in Response to Drought

Transcriptional Profiling of Sorghum Induced by Methyl Jasmonate, Salicylic Acid, and Aminocyclopropane Carboxylic Acid Reveals Cooperative Regulation and Novel Gene Responses

Jasmonic acid carboxyl methyltransferase: A key enzyme for jasmonate-regulated plant responses

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