Chemical Identification and Functional Analysis of Apocarotenoids Involved in the Development of Arbuscular Mycorrhizal Symbiosis

Akiyama, Kazuo

doi:10.1271/bbb.70023

Cited by 49 publications

(44 citation statements)

References 65 publications

(97 reference statements)

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“…In addition, symbiosis is possible thanks to continuous signals of recognition and acceptance between the plant and arbuscular mycorrhizal fungi (Vierheilig and Piché , 2002) using root exudates of the plant host (Akiyama, 2007). The contribution of the arbuscular mycorrhizal fungi had a significant effect on corn seedlings growth (Table 2).…”

Section: Discussionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fertilization Of Corn (Zea mays L.) Cultivated on Ferrous Soil in Southern Benin

Aguegue¹,

Noumavo²,

Dagbenonbakin³

et al. 2017

JAS

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The attainment of the millennium for development objectives require to improve the productivity of major cultures like maize (Zea mays L.). The present study aimed to assess the potential of Glomus cubens, Rhizophagus intraradices and Funneliformis mosseae to improve the productivity of corn cultivated on reddish ferrous soil in Southern Benin. A block of nine treatments with four repetition completely randomized was installed. Plant height and diameter and leaf area are growth parameters measured. Grain yield and endomycorrhizal infection were also evaluated. The best growths and grain yield (2.33 t/ha and 2.12 t/ha) were obtained respectively with the plants treated with R. intraradices + 50% of NPK and G. cubens + 50% of NPK compared to the control plants (1.48 t/ha). Moreover, the great frequencies of mycorhization (44% and 32.25% were observed respectively on the plants treated with G. cubens + 50% of NPK and R. intraradices + 50% NPK. These results show that the respective combination of these two Arbuscular Mycorrhizal Fungi with 50% NPK can increase of 50% the seeds yield of corn compared to the seeds yield obtained with the control plants. In addition, G. Cubens and R. intraradices are active in the colonization of maize roots. Use of R. Intraradices or G. cubens in combination with 50% of NPK help to increase the corn productivity and to reduce of half the chemical fertilizer commonly used by corn farmers at Southern Benin.

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Section: Discussionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fertilization Of Corn (Zea mays L.) Cultivated on Ferrous Soil in Southern Benin

Aguegue¹,

Noumavo²,

Dagbenonbakin³

et al. 2017

JAS

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“…Arbuscular mycorrhiza fungal colonization has been shown to enhance the production of triterpenoids (Akiyama and Hayashi, 2002), apocarotenoids (Klingner et al, 1995;Fester et al, 2002;Strack and Fester, 2006;Akiyama, 2007;Walter and Strack, 2011) and abscisic acid (Meixner et al, 2005) in roots of various plants. Systemic effects of AM on the quantity and quality of terpenoids in above-ground parts of plants have also been mooted (Kapoor et al, 2002a, b;Copetta et al, 2006;Khaosaad et al, 2006;Kapoor et al, 2007;Zubek et al, 2010;Weisany et al, 2015;Rydlov a et al, 2016).…”

Section: Effects Of Arbuscular Mycorrhiza On Terpenoidsmentioning

confidence: 99%

Terpenoids in plant and arbuscular mycorrhiza-reinforced defence against herbivorous insects

Sharma

Anand

Kapoor

2017

Ann Bot

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Background Plants, though sessile, employ various strategies to defend themselves against herbivorous insects and convey signals of an impending herbivore attack to other plant(s). Strategies include the production of volatiles that include terpenoids and the formation of symbiotic associations with fungi, such as arbuscular mycorrhiza (AM). This constitutes a two-pronged above-ground/below-ground attack-defence strategy against insect herbivores.Scope Terpenoids represent an important constituent of herbivore-induced plant volatiles that deter herbivores and/or attract their predators. Terpenoids serve as airborne signals that can induce defence responses in systemic undamaged parts of the plant and also prime defence responses in neighbouring plants. Colonization of roots by AM fungi is known to influence secondary metabolism in plants; this includes alteration of the concentration and composition of terpenoids, which can boost both direct and indirect plant defence against herbivorous insects. Enhanced nutrient uptake facilitated by AM, changes in plant morphology and physiology and increased transcription levels of certain genes involved in the terpenoid biosynthesis pathway result in alterations in plant terpenoid profiles. The common mycorrhizal networks of external hyphae have added a dimension to the two-pronged plant defence strategy. These act as conduits to transfer defence signals and terpenoids.Conclusion Improved understanding of the roles of terpenoids in plant and AM defences against herbivory and of interplant signalling in natural communities has significant implications for sustainable management of pests in agricultural ecosystems.

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“…Subsequently, they were identiWed as hyphal branching signals for arbuscular mycorrhizal soil fungi (Akiyama et al 2005). Whether strigolactones are essential for establishing the AM symbiosis has frequently been discussed, but their indispensibility has never been proven (Humphrey and Beale 2006;Akiyama 2007;Garcia-Garrido et al 2009). …”

Section: Strigolactones: From Rhizosphere Signals To Shoot Branching mentioning

confidence: 99%

Apocarotenoids: hormones, mycorrhizal metabolites and aroma volatiles

Walter

Floß

Strack

2010

Planta

213

191

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Apocarotenoids are tailored from carotenoids by oxidative enzymes [carotenoid cleavage oxygenases (CCOs)], cleaving specific double bonds of the polyene chain. The cleavage products can act as hormones, signaling compounds, chromophores and scent/aroma constituents. Recent advances were the identification of strigolactones as apocarotenoids and the description of their novel role as shoot branching inhibitor hormones. Strigolactones are also involved in plant signaling to both harmful (parasitic weeds) and beneficial [arbuscular mycorrhizal (AM) fungi] rhizosphere residents. This review describes the progress in the characterization of CCOs, termed CCDs and NCEDs, in plants. It highlights the importance of sequential cleavage reactions of C(40) carotenoid precursors, the apocarotenoid cleavage oxygenase (ACO) nature of several CCOs and the topic of compartmentation. Work on the biosynthesis of abundant C(13) cyclohexenone and C(14) mycorradicin apocarotenoids in mycorrhizal roots has revealed a new role of CCD1 as an ACO of C(27) apocarotenoid intermediates, following their predicted export from plastid to cytosol. Manipulation of the AM-induced apocarotenoid pathway further suggests novel roles of C(13) apocarotenoids in controlling arbuscule turnover in the AM symbiosis. CCD7 has been established as a biosynthetic crosspoint, controlling both strigolactone and AM-induced C(13) apocarotenoid biosynthesis. Interdependence of the two apocarotenoid pathways may thus play a role in AM-mediated reduction of parasitic weed infestations. Potential scenarios of C(13) scent/aroma volatile biogenesis are discussed, including the novel mechanism revealed from mycorrhizal roots. The recent progress in apocarotenoid research opens up new perspectives for fundamental work, but has also great application potential for the horticulture, food and fragrance industries.

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Chemical Identification and Functional Analysis of Apocarotenoids Involved in the Development of Arbuscular Mycorrhizal Symbiosis

Cited by 49 publications

References 65 publications

Arbuscular Mycorrhizal Fertilization Of Corn (Zea mays L.) Cultivated on Ferrous Soil in Southern Benin

Arbuscular Mycorrhizal Fertilization Of Corn (Zea mays L.) Cultivated on Ferrous Soil in Southern Benin

Terpenoids in plant and arbuscular mycorrhiza-reinforced defence against herbivorous insects

Apocarotenoids: hormones, mycorrhizal metabolites and aroma volatiles

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