Journal Browser

► Journal Browser

Special Issue Editor

Special Issue Information

Dear Colleagues,

Plant growth and development are regulated by a genetic program that is fine-tuned by a myriad of extrinsic environmental signals as well as several endogenous plant hormones (phytohormones). These phytohormones are a group of diverse small molecules that include auxins, cytokinins, gibberellins, abscisic acid, ethylene, brassinosteroids, jasmonic acid, salicylic acid, and peptide hormones. These hormones, which are small molecules, act at very low concentrations but virtually control almost every aspect of growth and development, including adaptation to biotic and abiotic stresses. Thus, plant hormone response pathways are attractive sites for biotechnological modifications to improve crop productivity. During the past few decades there has been an incredible growth in our knowledge on the hormonal control of plant growth and development, though our understanding is still far from complete.

In this Special Issue, we highly encourage investigators to contribute high-quality original research, short communications, and review articles focused on the implications of plant hormones in growth and development, their role in adaptation to the environment, including to abiotic and biotic stresses, cross-talk between plant hormones and other cell signaling systems, and the influence of soil microorganisms on plant growth.

Dr. Nihal Dharmasiri
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. Biomolecules is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). 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

plant hormones
auxins
cytokinin
gibberellins
ethylene
abscisic acid
jasmonic acid
salicylic acid
peptide hormones
growth and development

Published Papers (2 papers)

Download All Papers

Research

Jump to: Review

20 pages, 10534 KiB

Open AccessArticle

SUPPRESSOR OF MAX2 LIKE 6, 7, and 8 Interact with DDB1 BINDING WD REPEAT DOMAIN HYPERSENSITIVE TO ABA DEFICIENT 1 to Regulate the Drought Tolerance and Target SUCROSE NONFERMENTING 1 RELATED PROTEIN KINASE 2.3 to Abscisic Acid Response in Arabidopsis

by Yuke Lian, Chengfei Lian, Lei Wang, Zhimin Li, Guoqiang Yuan, Lijuan Xuan, Huanhuan Gao, Haijun Wu, Tao Yang and Chongying Wang

Biomolecules 2023, 13(9), 1406; https://doi.org/10.3390/biom13091406 - 18 Sep 2023

Cited by 1 | Viewed by 1129

Abstract

SUPPRESSOR OF MAX2-LIKE 6, 7, and 8 (SMXL6,7,8) function as repressors and transcription factors of the strigolactone (SL) signaling pathway, playing an important role in the development and stress tolerance in Arabidopsis thaliana. However, the molecular mechanism by which SMXL6,7,8 negatively regulate drought tolerance and ABA response remains largely unexplored. In the present study, the interacting protein and downstream target genes of SMXL6,7,8 were investigated. Our results showed that the substrate receptor for the CUL4-based E3 ligase DDB1-BINDING WD-REPEAT DOMAIN (DWD) HYPERSENSITIVE TO ABA DEFICIENT 1 (ABA1) (DWA1) physically interacted with SMXL6,7,8. The degradation of SMXL6,7,8 proteins were partially dependent on DWA1. Disruption of SMXL6,7,8 resulted in increased drought tolerance and could restore the drought-sensitive phenotype of the dwa1 mutant. In addition, SMXL6,7,8 could directly bind to the promoter of SUCROSE NONFERMENTING 1 (SNF1)-RELATED PROTEIN KINASE 2.3 (SnRK2.3) to repress its transcription. The mutations in SnRK2.2/2.3 significantly suppressed the hypersensitivity of smxl6/7/8 to ABA-mediated inhibition of seed germination. Conclusively, SMXL6,7,8 interact with DWA1 to negatively regulate drought tolerance and target ABA-response genes. These data provide insights into drought tolerance and ABA response in Arabidopsis via the SMXL6,7,8-mediated SL signaling pathway. Full article

(This article belongs to the Special Issue Hormonal Control of Plant Growth and Development)

► Show Figures

Figure 1

Review

Jump to: Research

17 pages, 3141 KiB

Open AccessReview

Dissecting the Roles of the Cytokinin Signaling Network: The Case of De Novo Shoot Apical Meristem Formation

by Nina Pokimica, Tatjana Ćosić, Branka Uzelac, Slavica Ninković and Martin Raspor

Biomolecules 2024, 14(3), 381; https://doi.org/10.3390/biom14030381 - 21 Mar 2024

Viewed by 941

Abstract

Numerous biotechnological applications require a fast and efficient clonal propagation of whole plants under controlled laboratory conditions. For most plant species, the de novo regeneration of shoots from the cuttings of various plant organs can be obtained on nutrient media supplemented with plant hormones, auxin and cytokinin. While auxin is needed during the early stages of the process that include the establishment of pluripotent primordia and the subsequent acquisition of organogenic competence, cytokinin-supplemented media are required to induce these primordia to differentiate into developing shoots. The perception of cytokinin through the receptor ARABIDOPSIS HISTIDINE KINASE4 (AHK4) is crucial for the activation of the two main regulators of the establishment and maintenance of shoot apical meristems (SAMs): SHOOTMERISTEMLESS (STM) and the WUSCHEL-CLAVATA3 (WUS-CLV3) regulatory circuit. In this review, we summarize the current knowledge of the roles of the cytokinin signaling cascade in the perception and transduction of signals that are crucial for the de novo establishment of SAMs and lead to the desired biotechnological output—adventitious shoot multiplication. We highlight the functional differences between individual members of the multigene families involved in cytokinin signal transduction, and demonstrate how complex genetic regulation can be achieved through functional specialization of individual gene family members. Full article

(This article belongs to the Special Issue Hormonal Control of Plant Growth and Development)

► Show Figures