Syntheses of Jasmonic Acid Related Compounds and Their Structure-Activity Relationships on the Growth of Rice Seedings

Yamane, Hisakazu; Sugawara, Jun; Suzuki, Yoshishige; Shimamura, Etsuko; Takahashi, Nobutaka

doi:10.1080/00021369.1980.10864412

Cited by 9 publications

(14 citation statements)

References 6 publications

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“…Generating a level of understanding comparable to dicot models for the biosynthesis, signaling and function of jasmonates in maize (and other monocots) will require a coalition of multiple research teams with diverse expertise. While not covered in this review, recent studies with Arabidopsis suggests that various jasmonates and their derivatives have their own independent roles in multiple physiological processes [15,157,158]. Additionally, many of these JA derivatizations are under enzymatic control, and orthologous for the genes involved are found in the maize genome.…”

Section: Discussionmentioning

confidence: 99%

“…opr7opr8 mutants are defective of total JA accumulation in young tissue [45]. Fitting with the role of JA in negatively regulating plant vegetative growth [157], seedlings of opr7opr8 double mutants possess long coleoptiles, first leaf sheathes and first and second leaf blades that displayed increased growth compared with WT seedling tissues [158]. In addition to the increase growth in leaf-associated tissue seen in opr7opr8 mutants, an increase in root lateral root length and density was also detected [158].…”

Section: Ja In Maize Growth Development and Senescencementioning

confidence: 99%

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Synthesis and Functions of Jasmonates in Maize

Borrego

Kolomiets

2016

Plants

109

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Of the over 600 oxylipins present in all plants, the phytohormone jasmonic acid (JA) remains the best understood in terms of its biosynthesis, function and signaling. Much like their eicosanoid analogues in mammalian system, evidence is growing for the role of the other oxylipins in diverse physiological processes. JA serves as the model plant oxylipin species and regulates defense and development. For several decades, the biology of JA has been characterized in a few dicot species, yet the function of JA in monocots has only recently begun to be elucidated. In this work, the synthesis and function of JA in maize is presented from the perspective of oxylipin biology. The maize genes responsible for catalyzing the reactions in the JA biosynthesis are clarified and described. Recent studies into the function of JA in maize defense against insect herbivory, pathogens and its role in growth and development are highlighted. Additionally, a list of JA-responsive genes is presented for use as biological markers for improving future investigations into JA signaling in maize.

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Section: Discussionmentioning

confidence: 99%

Section: Ja In Maize Growth Development and Senescencementioning

confidence: 99%

Synthesis and Functions of Jasmonates in Maize

Borrego

Kolomiets

2016

Plants

109

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“…15 However, the physiological effects of MeJA or its free acid JA remained unknown until the 1980s when a senescence-promoting effect of JA in oat leaves 16 In addition, MeJA was found to inhibit growth of rice, 17 or Vicia faba 18 seedlings. Since then, JA has been widely recognized as a potent plant growth regulator.…”

Section: Endogenous Ja Acts As a Negative Growth Regulator In Leaves mentioning

confidence: 99%

New perspectives into jasmonate roles in maize

Yan

Huang

Borrego

et al. 2014

Plant Signaling & Behavior

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It is well-known from the model dicotyledonous plants, Arabidopsis and tomato, that jasmonates (JAs) act as defense hormones in planta due to their potent ability to mediate defensive responses against insect/pathogen attacks or harsh environmental conditions. JA is also required for various developmental processes such as male fertility, seed maturation, root extension, and leaf senescence. In our recently published Plant Cell paper, the multiple roles of JA in the monocotyledonous agro-economically important model plant, maize, were investigated by comprehensive analysis of JA-deficient double mutant disrupted in the two oxophytodienoate reductase genes, OPR7 and OPR8. These two genes are the closest orthologs of the Arabidopsis JA-producing OPR3 and are the only maize OPRs required for JA biosynthesis. With this mutant, we previously showed that JA is essential for both male and female reproductive development, and required for the regulation of brace root pigmentation, leaf senescence, and defense against oomycete Pythium aristosporum, and beet armyworm (Spodoptera exigua). In this addendum, we expanded the investigation into the function of JA in elongation of sheaths, leaves, and roots, and its involvement in photomorphogenesis of seedlings.

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“…In addition to their role in the induction of chemical defences and systemic communication, jasmonates are inhibitors of cell division and elongation (Yamane et al. 1980; Ueda & Kato 1982; Yan et al.…”

Section: Plant Defencementioning

confidence: 99%

Illuminated behaviour: phytochrome as a key regulator of light foraging and plant anti‐herbivore defence

Ballaré

2009

Plant Cell & Environment

145

146

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In many ecological scenarios, the success of an individual plant is defined by the behavioural decisions that it makes when confronted with the risks of competition with other plants, and biomass losses to insect herbivores. These decisions involve expression of shade avoidance responses and induced chemical defences. Because these responses are costly, they frequently engender resource allocation dilemmas. In this review, I discuss the mechanisms that trigger adaptive responses to competitors and herbivores, highlighting the role of phytochromes as central organizers of the overall resource allocation strategy of plants. Phytochromes sense the reduction in the red to far-red (R : FR) ratio of sunlight caused by the proximity of other plants. Shade-intolerant plants respond to low R : FR ratios with shade avoidance behaviours and reduced investment in defence. Pfr depletion leads to increased stability of growth-promoting phytochrome-interacting factors (PIFs), and results in the production of auxins and gibberellins, degradation of DELLA proteins, which are repressors of PIFs, and reduced sensitivity to jasmonates. Thus, phytochrome appears to fulfil its organizational role by regulating the relative strength of the signalling circuits controlled by growth-related and defence-related hormones. I point out cases of signalling redundancy and discuss the significance of recent work on hormone signalling for our understanding of the mechanisms that control adaptive plant behaviour.

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Syntheses of Jasmonic Acid Related Compounds and Their Structure-Activity Relationships on the Growth of Rice Seedings

Cited by 9 publications

References 6 publications

Synthesis and Functions of Jasmonates in Maize

Synthesis and Functions of Jasmonates in Maize

New perspectives into jasmonate roles in maize

Illuminated behaviour: phytochrome as a key regulator of light foraging and plant anti‐herbivore defence

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