Strigolactone, a key regulator of nutrient allocation in plants

Umehara, Mikihisa

doi:10.5511/plantbiotechnology.11.1109a

Cited by 45 publications

(25 citation statements)

References 74 publications

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“…SLs have also been suggested to be positive regulators of other light-associated processes involved in the root and shoot development [86,87]. Furthermore, the participation of SLs in the senescence has been proposed, based on the observation of some SLs mutants showing delayed leaf senescence [47,88,89]. Nevertheless functions of SLs in this process remain unexplored at this moment.…”

Section: Discussionmentioning

confidence: 99%

“…The SLs produced during stress response play a key role in the inhibition of branching under P starvation. The lack of the correlation between the P concentration and the number of tillers/axillary branches in the mutants with affected SL biosynthesis and signaling clearly showed that both the production and perception of SLs are required for the suppression of tiller bud outgrowth under a P deficiency [35,47]. Additionally, as was mentioned, a higher expression of the gene encoding transporter of SLs was described for petunia plants that were grown in low P conditions [34].…”

Section: Sls Regulate the Above-ground Architecture Of Plants Durimentioning

confidence: 99%

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The Role of Strigolactones in Nutrient-Stress Responses in Plants

Marzec

Muszyńska

Gruszka

2013

IJMS

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Strigolactones (SLs) are a new group of plant hormones, which have been intensively investigated during the last few years. The wide spectrum of SLs actions, including the regulation of shoot/root architecture, and the stimulation of the interactions between roots and fungi or bacteria, as well as the stimulation of germination of parasitic plants, indicates that this group of hormones may play an important role in the mechanisms that control soil exploration, and the root-mediated uptake of nutrients. Current studies have shown that SLs might be factors that have an influence on the plant response to a deficiency of macronutrients. Experimental data from the last four years have confirmed that the biosynthesis and exudation of SLs are increased under phosphorus and nitrogen deficiency. All these data suggest that SLs may regulate the complex response to nutrient stress, which include not only the modification of the plant developmental process, but also the cooperation with other organisms in order to minimize the effects of threats. In this paper the results of studies that indicate that SLs play an important role in the response to nutrient stress are reviewed and the consequences of the higher biosynthesis and exudation of SLs in response to phosphorus and nitrogen deficiency are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Sls Regulate the Above-ground Architecture Of Plants Durimentioning

confidence: 99%

The Role of Strigolactones in Nutrient-Stress Responses in Plants

Marzec

Muszyńska

Gruszka

2013

IJMS

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“…Strigolactone levels increase systemically under low-phosphorus or low-nitrogen conditions in monocots, including rice and sorghum (Sorghum bicolor; Fig. 3; Yoneyama et al, 2007Yoneyama et al, , 2015López-Ráez et al, 2008;Umehara, 2011;Sun et al, 2014), and in dicots, such as pea and tomato (López-Ráez et al, 2008;Balzergue et al, 2011;Kohlen et al, 2012). Nitrogen and phosphorus deficiency responses were lost in the rice strigolactone mutants (Sun et al, 2014), demonstrating the importance of the strigolactone signaling pathway for nutrient responses in monocot roots (Umehara, 2011).…”

Section: Nutrient Changes Alter Hormone Signaling In Adventitious Rootsmentioning

confidence: 98%

The Physiology of Adventitious Roots

2015

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Adventitious roots are plant roots that form from any nonroot tissue and are produced both during normal development (crown roots on cereals and nodal roots on strawberry [Fragaria spp.]) and in response to stress conditions, such as flooding, nutrient deprivation, and wounding. They are important economically (for cuttings and food production), ecologically (environmental stress response), and for human existence (food production). To improve sustainable food production under environmentally extreme conditions, it is important to understand the adventitious root development of crops both in normal and stressed conditions. Therefore, understanding the regulation and physiology of adventitious root formation is critical for breeding programs. Recent work shows that different adventitious root types are regulated differently, and here, we propose clear definitions of these classes. We use three case studies to summarize the physiology of adventitious root development in response to flooding (case study 1), nutrient deficiency (case study 2), and wounding (case study 3).

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“…Strigolactones are considered as the signal molecules from the host plant in the AM symbiosis branching by strigolactones is an important step in AM symbiosis (Giovannetti et al 1994 ;GomezRoldan et al 2007 ). The acquisition of nutrients by plants was initially believed to be regulated by strigolactones (Gu et al 2011 ;Koltai and Kapultnik 2011 ;Umehara 2011 ). However, the recent work of Yoneyama et al ( 2012 ) with the strigolactone-defi cient ccd8 mutant indicates that strigolactones are not essential for nutrient regulation of mycorrhizal symbioses.…”

Section: Strigolactones: Evolving Role In Am Symbiosismentioning

confidence: 99%

Legume Root Exudates: Their Role in Symbiotic Interactions

Biate

Kumari

Annapurna

et al. 2014

Plant Microbes Symbiosis: Applied Facets

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Legumes are in constant dynamic interactions with rhizobia and arbuscular mycorrhizal (AM) fungi which mutually benefi t the partners. Legumes provide the carbon energy to the microbes, and they in turn provide the nutrients such as nitrogen and phosphorus. The growth of these symbionts largely depends on the secretions of the legume roots which include both high and low molecular weight compounds. These molecules also act as cues in plant-microbe signaling and recognition. A cascade of reactions take place between the legume and the microbe before specifi c refi ned symbiotic partnership manifests mutually benefi ting both the partners. Here, we provide an overview of the functions of legume root exudates with emphasis on the interactions between legume and rhizobia.

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Strigolactone, a key regulator of nutrient allocation in plants

Cited by 45 publications

References 74 publications

The Role of Strigolactones in Nutrient-Stress Responses in Plants

The Role of Strigolactones in Nutrient-Stress Responses in Plants

The Physiology of Adventitious Roots

Legume Root Exudates: Their Role in Symbiotic Interactions

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