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Sugar Signaling in Plants and Its Interaction with Phytohormones
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Sugar Signaling in Plants and Its Interaction with Phytohormones

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (20 January 2025) | Viewed by 2210

Special Issue Editor

Prof. Dr. Soulaiman Sakr

E-Mail Website
Guest Editor
Research Institute of Horticulture and Seeds, Agrocampus-Ouest, INRA and Angers University, 49035 Angers, France
Interests: sugar transport and metabolism; sugar signaling; crosstalk between sugar and hormones; abiotic stress; plant branching; urban plant physiology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

"Sugar signalling and its interaction with phytohormones" are crucial for plants’ growth and development.

Therefore, plant biologists are interested in the critical role that sugar, alone or in combination with other endogenous signals, plays throughout plants’ lives.

This Special Issue covers the following topics:

  • Sugar sensing and signal transduction pathways;
  • Cross-talk between sugar and hormone signalling pathways;
  • Cross-talk between sugar and hormone signalling pathways under adverse environmental conditions;
  • Cross-talk between sugar and hormone signalling pathways in plant development;
  • Cross-talk between sugar and hormone signalling pathways in plant nutrition.

Prof. Dr. Soulaiman Sakr
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sugar sensing
  • sugar transduction pathway
  • interplay between sugar and hormone signaling pathways
  • abiotic stress
  • plant development
  • plant nutrition
  • epigenitic

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Published Papers (1 paper)

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Review

17 pages, 4230 KiB  
Review
Sugar Transport and Signaling in Shoot Branching
by Joan Doidy, Yuhui Wang, Léo Gouaille, Ingrid Goma-Louamba, Zhengrong Jiang, Nathalie Pourtau, José Le Gourrierec and Soulaiman Sakr
Int. J. Mol. Sci. 2024, 25(23), 13214; https://doi.org/10.3390/ijms252313214 - 9 Dec 2024
Cited by 1 | Viewed by 1579
Abstract
The source–sink relationship is critical for proper plant growth and development, particularly for vegetative axillary buds, whose activity shapes the branching pattern and ultimately the plant architecture. Once formed from axillary meristems, axillary buds remain dormant or become active to grow into new [...] Read more.
The source–sink relationship is critical for proper plant growth and development, particularly for vegetative axillary buds, whose activity shapes the branching pattern and ultimately the plant architecture. Once formed from axillary meristems, axillary buds remain dormant or become active to grow into new branches. This transition is notably driven by the regulation of the bud sink strength, which is reflected in the ability to unload, metabolize and store photoassimilates. Plants have so far developed two main mechanisms for unloading sugars (sucrose) towards sink organs, a symplasmic pathway and an apoplasmic pathway, but so far limited investigations have been reported about the modes of sugar uptake during the transition from the dormant to the active outgrowth state of the bud. The available data indicate that the switch from dormant bud to active outgrowing state, requires sugar and is shortly preceded by an increase in bud metabolic activity and a remobilization of the stem starch reserves in favor of growing buds. This activation of the bud sink strength is accompanied by an up-regulation of the main markers of apoplasmic unloading, such as sugar transporters (sucrose transporters—SUTs; sugar will eventually be exported transporters—SWEETs), sucrose hydrolyzing enzymes (cell wall invertase—CWINV) and sugar metabolic pathways (glycolysis/tricarboxylic cycle—TCA; oxidative pentose phosphate pathway—OPPP). As these results are limited to a few species, they are not sufficient to provide a complete and accurate picture of the mode(s) of sugar unloading toward axillary buds and deserve to be complemented by additional studies in a wide variety of plants using systems integration, combining genetic, molecular and immunolocalization approaches. Altogether, we discuss here how sugar is a systemic regulator of shoot branching, acting both as an energy-rich molecule and a signaling entity in the establishment of the bud sink strength. Full article
(This article belongs to the Special Issue Sugar Signaling in Plants and Its Interaction with Phytohormones)
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