Strigolactones: structures and biological activities

Yoneyama, Koichi; Xie, Xiaonan; Yoneyama, Kaori; Takeuchi, Yoshinori

doi:10.1002/ps.1726

Cited by 162 publications

(121 citation statements)

References 35 publications

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“…Next, we examined the β-carotene branch of the pathway, from which ABA and strigolactones are derived. These apocarotenoids are phytohormones with roles in environmental response and development (21)(22)(23)(24)(25)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61). Production of apocarotenoids, including ABA and strigolactone, requires oxidative cleavage of carotenoid precursors.…”

Section: Resultsmentioning

confidence: 99%

“…For example, carotenoid pigments and volatile apocarotenoids, such as α-and β-ionone, are key aroma and flavor elements in attracting the agents of pollination and seed dispersal (18)(19)(20). Carotenoids serve as precursors for abscisic acid (ABA) and strigolactones, phytohormones that function in plant development as well as in response to the environment (21)(22)(23)(24)(25), and have also been implicated in the production of other regulatory signaling molecules (26,27). Despite diverse roles in plant growth and development, functional analyses of carotenoids have largely been focused on aboveground organs.…”

Section: Significancementioning

confidence: 99%

See 1 more Smart Citation

Periodic root branching in Arabidopsis requires synthesis of an uncharacterized carotenoid derivative

Norman

Zhang

Cazzonelli

et al. 2014

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

109

117

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In plants, continuous formation of lateral roots (LRs) facilitates efficient exploration of the soil environment. Roots can maximize developmental capacity in variable environmental conditions through establishment of sites competent to form LRs. This LR prepattern is established by a periodic oscillation in gene expression near the root tip. The spatial distribution of competent (prebranch) sites results from the interplay between this periodic process and primary root growth; yet, much about this oscillatory process and the formation of prebranch sites remains unknown. We find that disruption of carotenoid biosynthesis results in seedlings with very few LRs. Carotenoids are further required for the output of the LR clock because inhibition of carotenoid synthesis also results in fewer sites competent to form LRs. Genetic analyses and a carotenoid cleavage inhibitor indicate that an apocarotenoid, distinct from abscisic acid or strigolactone, is specifically required for LR formation. Expression of a key carotenoid biosynthesis gene occurs in a spatially specific pattern along the root's axis, suggesting spatial regulation of carotenoid synthesis. These results indicate that developmental prepatterning of LRs requires an uncharacterized carotenoid-derived molecule. We propose that this molecule functions non-cell-autonomously in establishment of the LR prepattern.root development | patterning | secondary metabolite synthesis A nchorage and uptake of water and soluble nutrients are essential functions of plant root systems and key to plant productivity and survival. The capacity of a root system to carry out these functions can be maximized by iterative root branching. Root branches are formed de novo during primary root growth, which allows for the elaboration of a complex root system that effectively enables the plant to navigate and exploit the resources of diverse, locally variable subterranean environments. Understanding the developmental mechanisms underlying the pattern of root branches has broad significance in both basic and applied research.As with other dicotyledonous plants, formation of a complex root system in the model plant Arabidopsis thaliana (Arabidopsis) occurs through iterative production of branches, or lateral roots (LRs), from the primary root. The simplified root system of Arabidopsis has yielded considerable insight into the cellular events and molecular regulators required for LR formation (recently reviewed in refs.

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Section: Resultsmentioning

confidence: 99%

Section: Significancementioning

confidence: 99%

Periodic root branching in Arabidopsis requires synthesis of an uncharacterized carotenoid derivative

Norman

Zhang

Cazzonelli

et al. 2014

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

109

117

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“…Multiple strigolactones have been identified both within and between species ( Fig. 2; Yoneyama et al, 2009). These differences could be attributed to either multiple initial substrates or, more likely, to subsequent modifications.…”

Section: From Genes To Moleculesmentioning

confidence: 99%

Climbing the Branches of the Strigolactones Pathway One Discovery at a Time

Goulet

Klee

2010

Plant Physiology

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“…5,16 It is clear that different functional groups and stereochemistry lead to different biological specificity in strigolactones. 5,14,16,17 We recently reported on the role of orobanchol, solanacol, and two putative didehydroorobanchol isomers in tomato. 18 In this addendum we report the presence of several additional strigolactones in tomato and discuss their possible biological relevance.…”

mentioning

confidence: 99%