Relationships between jasmonates and auxin in regulation of some physiological processes in higher plants

Saniewski, M.; Ueda, Junichi; Miyamoto, Kazuaki

doi:10.1007/s11738-002-0013-9

Cited by 35 publications

(21 citation statements)

References 68 publications

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“…This provides an explanation that the mechanism of flower inhibition by auxin is dependent on JAMe. Indeed, the interdependent action of both hormones in the regulation of other physiological processes was also observed during root, stamen, and filament growth [32,53,54]. This work confirms that InJMT involved in JAs metabolism in I. nil demonstrates a high homology to genes identified in other plant species.…”

Section: Discussionsupporting

confidence: 75%

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Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

et al. 2016

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Interactions among jasmonates and auxin in the photoperiodic flower induction of a short-day plant Ipomoea nil were examined. Therefore, we measured changes in jasmonic acid (JA) and jasmonic acid methyl ester (JAMe) levels in the cotyledons of I. nil during the inductive night, as well as the effects of indole-3-acetic acid (IAA) on their content. We noticed an interesting result, that IAA applied on the cotyledons of I. nil is an effective stimulator of JAMe production in seedlings cultivated under inductive night conditions. IAA treatment also significantly increased the transcriptional activity of InJMT (JASMONIC ACID CARBOXYL METHYL-TRANSFERASE), while did not affect the expression of JA biosynthesis genes (lipoxyganease, allene oxide synthase, 12-oxophytodienoate reductase). These data, as well as the results of our previous research, suggest that exogenous IAA participates in I. nil flower induction process by stimulating InJMT expression and, as a consequence of that, enhancing the level of JAMe, a flowering inhibitor.

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Section: Discussionsupporting

confidence: 75%

“…Many studies provide a great significance of interactions between IAA and JAs, for instance, stem cell growth, abscission, secondary abscission zone formation, tendril coiling, and wounding [32]. In A. thaliana, JAMe inhibits primary root elongation via stimulation of YUC8 and YUC9 expression involved in auxin biosynthesis [33].…”

Section: Introductionmentioning

confidence: 99%

Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

et al. 2016

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“…IAA generally is considered an antagonist of JA, and it can suppress the induction of defensive compounds such as protease inhibitors and nicotine (Baldwin et al 1997;Saniewski et al 2002). Generally, IAA decreases in response to wounding (Thornburg andLi 1991, Schmelz et al 2003b), however, it rapidly and significantly increased in maize stems in response to ECB herbivory.…”

Section: Discussionmentioning

confidence: 99%

Rapidly Induced Chemical Defenses in Maize Stems and Their Effects on Short-term Growth of Ostrinia nubilalis

et al. 2011

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Plants damaged by insect herbivory often respond by inducing a suite of defenses that can negatively affect an insect's growth and fecundity. Ostrinia nubilalis (European corn borer, ECB) is one of the most devastating insect pests of maize, and in the current study, we examined the early biochemical changes that occur in maize stems in response to ECB herbivory and how these rapidly induced defenses influence the growth of ECB. We measured the quantities of known maize defense compounds, benzoxazinoids and the kauralexin class of diterpenoid phytoalexins. ECB herbivory resulted in decreased levels of the benzoxazinoid, 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one)-β-D-glucopyranose (DIMBOA-Glc), and a corresponding increase in 2-(2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one)-β-D-glucopyranose (HDMBOA-Glc). Total quantities of benzoxazinoids and kauralexins were increased as early as 24 h after the initiation of ECB feeding. The plant hormones, jasmonic acid (JA) and ethylene (ET), and the transcripts encoding their key biosynthetic enzymes also accumulated in response to ECB herbivory, consistent with a role in defense regulation. The combined pharmacological application of JA and the ET precursor, 1-aminocyclopropane-1-carboxylic acid to stem internode tissue likewise resulted in changes in benzoxazinoids similar to that observed with ECB damage. Despite the fact that maize actively mounts a defense response to ECB stem feeding, no differences in percent weight gain were observed between ECB larvae that fed upon non-wounded control tissues compared to tissues obtained from plants previously subjected to 24 h ECB stem herbivory. These rapid defense responses in maize stems do not appear to negatively impact ECB growth, thus suggesting that ECB have adapted to these induced biochemical changes.

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“…a fast one within a few hours, and slow one after several days (Maksymiec et al 2005) may be the reason of the usually observed fast decrease in growth processes and senescence intensification of plants after prolonged exposure to the heavy metals. This conclusion resulted from the observation that, although jasmonates are signal molecules of increased resistance to stress, their activity is also connected with slowing down the activity of the photosynthetic apparatus (Ivanov and Kicheva 1993; Maksymiec and Krupa 2002a) and growth (Irving et al 1999;Saniewski et al 2002;Ś wiątek et al 2002;Merkouropoulos and Shirsat 2003;Maciejewska and Kopcewicz 2003), or acceleration of senescence processes (He et al 2002;Maksymiec and Krupa 2002a). The recently obtained data indicate that for JA-mediated root growth, senescence and defense response, the COI1 gene (encoding proteins which form a part of SCF COI1 -type complex) is needed, and riboflavin for their suppression (Xiao et al 2004).…”

Section: Connections With Hormone Signaling Pathwaysmentioning

confidence: 99%

Signaling responses in plants to heavy metal stress

2007

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Heavy metal toxicity is one of the major abiotic stresses leading to hazardous health effects in animals and plants. Because of their high reactivity they can directly influence growth, senescence and energy synthesis processes. In this review a new indirect mechanism of heavy metal action is proposed. This mechanism is connected with the generation of reactive oxygen species (especially H 2 O 2 ) and jasmonate and ethylene signaling pathways and shows that toxicity symptoms observed in plants may result from direct heavy metal influence as well as the activity of some signaling molecules induced by the stress action.

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Relationships between jasmonates and auxin in regulation of some physiological processes in higher plants

Cited by 35 publications

References 68 publications

Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

Rapidly Induced Chemical Defenses in Maize Stems and Their Effects on Short-term Growth of Ostrinia nubilalis

Signaling responses in plants to heavy metal stress

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