Reduced levels of volatile emissions in jasmonate‐deficient<i>spr2</i>tomato mutants favour oviposition by insect herbivores

Sánchez-Hernández, Carla; López, Mercedes G.; Délano‐Frier, John Paul

doi:10.1111/j.1365-3040.2005.01431.x

Cited by 81 publications

(82 citation statements)

References 73 publications

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“…In OPR3-RNAi plants, monoterpenes and sesquiterpenes were found to be reduced, which is consistent with previous reports on reduced terpene production in the jasmonate-deficient tomato mutants defenseless1 (Thaler et al, 2002;Ament et al, 2004;Degenhardt et al, 2010) and suppressor of prosystemin-mediated response2 (spr2) (Sánchez-Hernández et al, 2006;Wei et al, 2013), as well as in the JA/JA-Ileinsensitive jai1 mutant (Li et al, 2004). Likewise, a reduction in type VI glandular trichome density, similar to the approximately 65% reduction in OPR3-RNAi plants, was also reported for jai1 (Li et al, 2004).…”

Section: Discussionsupporting

confidence: 92%

Jasmonic Acid and Its Precursor 12-Oxophytodienoic Acid Control Different Aspects of Constitutive and Induced Herbivore Defenses in Tomato

et al. 2014

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The jasmonate family of growth regulators includes the isoleucine (Ile) conjugate of jasmonic acid (JA-Ile) and its biosynthetic precursor 12-oxophytodienoic acid (OPDA) as signaling molecules. To assess the relative contribution of JA/JA-Ile and OPDA to insect resistance in tomato (Solanum lycopersicum), we silenced the expression of OPDA reductase3 (OPR3) by RNA interference (RNAi). Consistent with a block in the biosynthetic pathway downstream of OPDA, OPR3-RNAi plants contained wild-type levels of OPDA but failed to accumulate JA or JA-Ile after wounding. JA/JA-Ile deficiency in OPR3-RNAi plants resulted in reduced trichome formation and impaired monoterpene and sesquiterpene production. The loss of these JA/JA-Ile -dependent defense traits rendered them more attractive to the specialist herbivore Manduca sexta with respect to feeding and oviposition. Oviposition preference resulted from reduced levels of repellant monoterpenes and sesquiterpenes. Feeding preference, on the other hand, was caused by increased production of cis-3-hexenal acting as a feeding stimulant for M. sexta larvae in OPR3-RNAi plants. Despite impaired constitutive defenses and increased palatability of OPR3-RNAi leaves, larval development was indistinguishable on OPR3-RNAi and wild-type plants, and was much delayed compared with development on the jasmonic acid-insensitive1 (jai1) mutant. Apparently, signaling through JAI1, the tomato ortholog of the ubiquitin ligase CORONATINE INSENSITIVE1 in Arabidopsis (Arabidopsis thaliana), is required for defense, whereas the conversion of OPDA to JA/JA-Ile is not. Comparing the signaling activities of OPDA and JA/JA-Ile, we found that OPDA can substitute for JA/JA-Ile in the local induction of defense gene expression, but the production of JA/JA-Ile is required for a systemic response.

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Section: Discussionsupporting

confidence: 92%

Jasmonic Acid and Its Precursor 12-Oxophytodienoic Acid Control Different Aspects of Constitutive and Induced Herbivore Defenses in Tomato

et al. 2014

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“…3) was consistent with the susceptibility to B. tabaci observed in plants compromised in JA synthesis or signaling (Sánchez-Hernández et al 2006;Zarate et al 2007). However, the fact that BsDN treatment was active in the above mutants also suggested that mechanism(s) other than those regulated by JA contributed to the ISR against B. tabaci produced by BsDN inoculation.…”

Section: Discussionsupporting

confidence: 77%

Inoculation of tomato plants (Solanum lycopersicum) with growth-promoting Bacillus subtilis retards whitefly Bemisia tabaci development

Valenzuela-Soto

Estrada-Hernández

Ibarra-Laclette

et al. 2009

Planta

122

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Root inoculation of tomato (Solanum lycopersicum) plants with a Bacillus subtilis strain BEB-DN (BsDN) isolated from the rhizosphere of cultivated potato plants was able to promote growth and to generate an induced systemic resistance (ISR) response against virus-free Bemisia tabaci. Growth promotion was evident 3 weeks after inoculation. No changes in oviposition density, preference and nymphal number in the early stages of B. tabaci development were observed between BsDN-treated plants and control plants inoculated with a non-growth promoting Bs strain (PY-79), growth medium or water. However, a long-term ISR response was manifested by a significantly reduced number of B. tabaci pupae developing into adults in BsDN-treated plants. The observed resistance response appeared to be a combination of jasmonic acid (JA) dependent and JA-independent responses, since the BsDN-related retardation effect on B. tabaci development was still effective in the highly susceptible spr2 tomato mutants with an impaired capacity for JA biosynthesis. A screening of 244 genes, 169 of which were previously obtained from subtractive-suppressive-hybridization libraries generated from B. tabaci-infested plants suggested that the BsDN JA-dependent ISR depended on an anti-nutritive effect produced by the simultaneous expression of genes coding principally for proteases and proteinase inhibitors, whereas the JA-independent ISR observed in the spr2 background curiously involved the up-regulation of several photosynthetic genes, key components of the phenyl-propanoid and terpenoid biosynthetic pathways and of the Hsp90 chaperonin, which probably mediated pest resistance response(s), in addition to the down-regulation of pathogenesis and hypersensitive response genes.

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“…The amino-acid and carbohydrate levels positively correlated with the density and development of whiteßies (Bi et al 2003). In contrast, the secondary metabolites (i.e., jasmonic acid [JA], salicylic acid [SA], phenolics, and terpenes), deterred the feeding and oviposition of piercingÐsucking insects and decreased their population Þtness (Mansour et al 1997, Jormalainen et al 2001, Pegadaraju et al 2005, Sanchez-Hernandez et al 2006, Zarate et al 2007). Because of alterations in the plant biochemistry after an insect infestation, the settling, feeding, growth, development, and fecundity of later-arriving herbivores may be affected (Inbar et al 1999, Bi et al 2003, Ohgushi 2005.…”

mentioning

confidence: 99%

Reduction in the Fitness of <I>Bemisia tabaci</I> Fed on Three Previously Infested Tomato Genotypes Differing in the Jasmonic Acid Pathway

Cui

Sun

et al. 2012

env. entom.

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The effect of previous infestation (preconditioning) by the whitefly Bemisia tabaci (Gennadius) biotype B on the population fitness of subsequent infestations that fed on three isogenic tomato genotypes (wild-type [Wt], a jasmonic acid [JA] defense-enhanced genotype [35S], and a JA-deficient genotype [spr2]) was examined. We tested the hypotheses that whiteflies fed on preconditioned tomatoes (Solanum lycopersicum L.) would have reduced fitness and that the effect would be mediated via the JA-dependent systemic plant defense pathway. Preconditioning by the whitefly resulted in decreased levels of soluble sugars and free amino acids and increased salicylic acid (SA), total phenolics, and condensed tannins for all three genotypes. The durations of the larval and pupal stages were prolonged in whiteflies fed on the preconditioned plants compared with those that fed on control plants. Furthermore, preconditioning resulted in reduced fecundity and intrinsic rate of increase (r(m)) of the whiteflies that subsequently fed on the three tomato genotypes. Whiteflies were more likely to feed and deposit eggs on control plants than on preconditioned plants. Our results indicate that preconditioning induced decreases in leaf nutrients and increased induction of an SA based defense that degraded the quality of the substrate as evidenced by an increased developmental time and reduced fecundity of whiteflies that subsequently fed on them.

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Reduced levels of volatile emissions in jasmonate‐deficientspr2tomato mutants favour oviposition by insect herbivores

Abstract: ABSTRACT

Cited by 81 publications

References 73 publications

Jasmonic Acid and Its Precursor 12-Oxophytodienoic Acid Control Different Aspects of Constitutive and Induced Herbivore Defenses in Tomato

Jasmonic Acid and Its Precursor 12-Oxophytodienoic Acid Control Different Aspects of Constitutive and Induced Herbivore Defenses in Tomato

Inoculation of tomato plants (Solanum lycopersicum) with growth-promoting Bacillus subtilis retards whitefly Bemisia tabaci development

Reduction in the Fitness of <I>Bemisia tabaci</I> Fed on Three Previously Infested Tomato Genotypes Differing in the Jasmonic Acid Pathway

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