Environmental nitrate signals through abscisic acid in the root tip

Harris, Jeanne M.; Ondzighi‐Assoume, Christine A.

doi:10.1080/15592324.2016.1273303

Cited by 22 publications

(18 citation statements)

References 63 publications

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“…This fact indicates that the SHA‐mediated increase in root ABA concentration also plays a relevant role in the root growth‐promoting action of SHA. These results are in line with Harris and Ondzighi‐Assoume () who showed the relevant role of root ABA in the modulation of root growth. Our results indicate that whereas some aspects of the SHA‐mediated effects on root development (lateral and adventitious root proliferation) and architecture (length of principal root) are expressed through IAA, NO, and ethylene signaling pathways (Mora et al, ), other aspects concerning the whole root growth involve ABA signaling pathways.…”

Section: Discussionsupporting

confidence: 92%

“…On the other hand, Olaetxea et al () reported that SHA was able to increase Lp r through ABA‐dependent pathways, with this effect being essential for the enhancement of shoot growth. In this sense, recent studies have shown that root ABA affects root growth and architecture by interacting with some nitrate transporters (Harris & Ondzighi‐Assoume, ). Several studies have shown that HA with diverse origins increased the expression of nitrate transporters in different plant species (Olaetxea et al, and references there in).…”

Section: Discussionmentioning

confidence: 99%

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Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

et al. 2019

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Although the ability of humic (HA) and fulvic acids (FA) to improve plant growth has been demonstrated, knowledge about the mechanisms responsible for the direct effects of HA and FA on the promotion of plant growth is scarce and fragmentary. Our study investigated the causal role of both root PM H+‐ATPase activity and ABA in the SHA‐promoting action on both root and shoot growth. The involvement of these processes in the regulation of shoot cytokinin concentration and activity was also studied. Our aim was to integrate such plant responses for providing new insights to the current model on the mode of action of HA for promoting root and shoot growth. Experiments employing specific inhibitors and using Cucumis sativus L. plants show that both the root PM H+‐ATPase activity and root ABA play a crucial role in the root growth‐promoting action of SHA. With regard to the HA‐promoting effects on shoot growth, two pathways of events triggered by the interaction of SHA with plant roots are essential for the increase in root PM H+‐ATPase activity—which also mediates an increase in cytokinin concentration and action in the shoot—and the ABA‐mediated increase in hydraulic conductivity (Lpr).

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

et al. 2019

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“…The increase in the level of root‐tip‐localized ABA also negatively regulates the expression of the SCARECROW transcription factor gene, thus providing a sensitive mechanism for modulating root growth in response to environmental changes. [ 297 ] Together, these results indicate that ABA‐GE levels in plants and the ABA‐GE hydrolysis enzyme β ‐glucosidase 1 have significant functions in ABA catabolism.…”

Section: Aba Catabolismmentioning

confidence: 92%

Chemical Manipulation of Abscisic Acid Signaling: A New Approach to Abiotic and Biotic Stress Management in Agriculture

et al. 2020

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The phytohormone abscisic acid (ABA) is the best‐known stress signaling molecule in plants. ABA protects sessile land plants from biotic and abiotic stresses. The conserved pyrabactin resistance/pyrabactin resistance‐like/regulatory component of ABA receptors (PYR/PYL/RCAR) perceives ABA and triggers a cascade of signaling events. A thorough knowledge of the sequential steps of ABA signaling will be necessary for the development of chemicals that control plant stress responses. The core components of the ABA signaling pathway have been identified with adequate characterization. The information available concerning ABA biosynthesis, transport, perception, and metabolism has enabled detailed functional studies on how the protective ability of ABA in plants might be modified to increase plant resistance to stress. Some of the significant contributions to chemical manipulation include ABA biosynthesis inhibitors, and ABA receptor agonists and antagonists. Chemical manipulation of key control points in ABA signaling is important for abiotic and biotic stress management in agriculture. However, a comprehensive review of the current knowledge of chemical manipulation of ABA signaling is lacking. Here, a thorough analysis of recent reports on small‐molecule modulation of ABA signaling is provided. The challenges and prospects in the chemical manipulation of ABA signaling for the development of ABA‐based agrochemicals are also discussed.

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“…Additionally, abscisic acid (ABA) and gibberellic acid (GA) are involved in P starvation signalling in plants (Baek et al ., 2017). ABA has also been implicated in the nitrate‐mediated signalling pathway for lateral root elongation (Harris and Ondzighi‐Assoume, 2017). In our study, two putative strigolactone esterase D14 genes (Traes_4BL_D05623E45, Traes_4BL_D62825306) involved in the strigolactone signalling pathway, and one GA 2‐oxidase 6 gene (Traes_1DS_125A395C1) was upregulated under P starvation condition at the later stage of colonization (Supporting Information Table S4).…”

Section: Biosynthesis Of Phytohormones and Secondary Metabolitesmentioning

confidence: 99%

Serendipita besciipromotes winter wheat growth and modulates the host root transcriptome under phosphorus and nitrogen starvation

Ray

Guo

Chi

et al. 2020

Environmental Microbiology

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Serendipita vermifera ssp. bescii, hereafter referred to as S. bescii, is a root-associated fungus that promotes plant growth in both its native switchgrass host and a variety of monocots and dicots. Winter wheat (Triticum aestivum L.), a dual-purpose crop, used for both forage and grain production, significantly contributes to the agricultural economies of the Southern Great Plains, USA. In this study, we investigated the influence of S. bescii on growth and transcriptome regulation of nitrogen (N) and phosphorus (P) metabolism in winter wheat. Serendipita bescii significantly improved lateral root growth and forage biomass under a limited N or P regime. Further, S. bescii activated sets of host genes regulating N and P starvation responses. These genes include, root-specific auxin transport, strigolactone and gibberellin biosynthesis, degradation of phospholipids and biosynthesis of glycerolipid, downregulation of ammonium transport and nitrate assimilation, restriction of protein degradation by autophagy and subsequent N remobilization. All these genes are hypothesized to regulate acquisition, assimilation and remobilization of N and P. Based on transcriptional level gene regulation and physiological responses to N or P limitation, we suggest S. bescii plays a critical role in modulating stress imposed by limitation of these two critical nutrients in winter wheat.

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Environmental nitrate signals through abscisic acid in the root tip

Cited by 22 publications

References 63 publications

Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

Chemical Manipulation of Abscisic Acid Signaling: A New Approach to Abiotic and Biotic Stress Management in Agriculture

Serendipita besciipromotes winter wheat growth and modulates the host root transcriptome under phosphorus and nitrogen starvation

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Environmental nitrate signals through abscisic acid in the root tip

Cited by 22 publications

References 63 publications

Root ABA and H+‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

Root ABA and H+‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

Chemical Manipulation of Abscisic Acid Signaling: A New Approach to Abiotic and Biotic Stress Management in Agriculture

Serendipita besciipromotes winter wheat growth and modulates the host root transcriptome under phosphorus and nitrogen starvation

Contact Info

Product

Resources

About

Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids

Root ABA and H⁺‐ATPase are key players in the root and shoot growth‐promoting action of humic acids