The unique photosynthetic apparatus of Pinaceae - Analysis of photosynthetic complexes in Norway spruce (Piceaabies)
J Exp Bot. 2019 Apr 2 Epub ahead of print]

The Dynamics of Cambial Stem Cell Activity
Annu Rev Plant Biol. 2019 Mar 1 [Epub ahead of print]

Regulatory Diversification of INDEHISCENT in the Capsella Genus Directs Variation in Fruit Morphology
Curr Biol. 2019, 29(6):1038-

Surveillance of cell wall diffusion barrier integrity modulates water and solute transport in plants
Sci Rep. 2019, 9(1):4227

Selective auxin agonists induce specific AUX/IAA protein degradation to modulate plant development
Proc Natl Acad Sci U S A. 2019, 116(13):6463-6472
Vain T, Raggi S, Ferro N, Barange DK, Kieffer M, Ma Q, Doyle SM, Thelander M, Pařízková B, Novák O, Ismail A, Enquist PA, Rigal A, Łangowska M, Ramans Harborough S, Zhang Y, Ljung K, Callis J, Almqvist F, Kepinski S, Estelle M, Pauwels L, Robert S

Abstract
Auxin phytohormones control most aspects of plant development through a complex and interconnected signaling network. In the presence of auxin, AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) transcriptional repressors are targeted for degradation by the SKP1-CULLIN1-F-BOX (SCF) ubiquitin-protein ligases containing TRANSPORT INHIBITOR RESISTANT 1/AUXIN SIGNALING F-BOX (TIR1/AFB). CULLIN1-neddylation is required for SCFTIR1/AFB functionality, as exemplified by mutants deficient in the NEDD8-activating enzyme subunit AUXIN-RESISTANT 1 (AXR1). Here, we report a chemical biology screen that identifies small molecules requiring AXR1 to modulate plant development. We selected four molecules of interest, RubNeddin 1 to 4 (RN1 to -4), among which RN3 and RN4 trigger selective auxin responses at transcriptional, biochemical, and morphological levels. This selective activity is explained by their ability to consistently promote the interaction between TIR1 and a specific subset of AUX/IAA proteins, stimulating the degradation of particular AUX/IAA combinations. Finally, we performed a genetic screen using RN4, the RN with the greatest potential for dissecting auxin perception, which revealed that the chromatin remodeling ATPase BRAHMA is implicated in auxin-mediated apical hook development. These results demonstrate the power of selective auxin agonists to dissect auxin perception for plant developmental functions, as well as offering opportunities to discover new molecular players involved in auxin responses.

e-link to publication
Dynamic pH-induced conformational changes of the PsbO protein in the fluctuating acidity of the thylakoid lumen
Physiol Plant. 2019 Feb 21 [Epub ahead of print]

Automation and Scale Up of Somatic Embryogenesis for Commercial Plant Production, With Emphasis on Conifers
FRONTIERS IN PLANT SCIENCE 2019, 10:109

Rho-of-plant-activated root hair formation requires Arabidopsis YIP4a/b gene function
Development. 2019, 146(5)

FT modulates genome-wide DNA-binding of the bZIP transcription factor FD
Plant Physiol. 2019 Feb 15 [Epub ahead of print]

Control of root meristem establishment in conifers
PHYSIOLOGIA PLANTARUM 2019, 165(1):81-89

Control of adventitious root formation: insights into synergistic and antagonistic hormonal interactions
PHYSIOLOGIA PLANTARUM 2019, 165(1): 90-100

Tissue-specific hormone profiles from woody poplar roots under bending stress
PHYSIOLOGIA PLANTARUM 2019, 165(1):101-113

Estimation of genetic parameters, provenance performances, and genotype by environment interactions for growth and stiffness in lodgepole pine (Pinus contorta)
SCANDINAVIAN JOURNAL OF FOREST RESEARCH 2019, 34(1):1-11

Extracellular peptide Kratos restricts cell death during vascular development and stress in Arabidopsis
J Exp Bot. 2019 Feb 7 [Epub ahead of print]

Dual and Dynamic Intracellular localisation of Arabidopsis thaliana SnRK1.1
J Exp Bot. 2019 Feb 7 [Epub ahead of print]

Genetic analysis of wood quality traits in Norway spruce open-pollinated progenies and their parent plus-trees at clonal archives, and the evaluation of phenotypic selection of plus-trees
Canadian Journal of Forest Research 2019, e-First Article

Can leaf net photosynthesis acclimate to rising and more variable temperatures?
Plant Cell Environ. 2019 Feb 1 [Epub ahead of print]

Heterologous phosphoketolase expression redirects flux towards acetate, perturbs sugar phosphate pools and increases respiratory demand in Saccharomyces cerevisiae
Microb Cell Fact. 2019, 18(1):25

Phloem companion cell-specific transcriptomic and epigenomic analyses identify MRF1, a novel regulator of flowering
Plant Cell. 2019, 31(2):325-345

Lateral Transport of Organic and Inorganic Solutes
Plants (Basel). 2019, 8(1)

Auxin Function in the Brown Alga Dictyota dichotoma
Plant Physiol. 2019, 179(1):280-299

UDP-Sugar Producing Pyrophosphorylases: Distinct and Essential Enzymes With Overlapping Substrate Specificities, Providing de novo Precursors for Glycosylation Reactions
Front. Plant Sci. 2019, 9:1822