Cited by KAI2-dependent signaling controls vegetative reproduction in<i>Marchantia polymorpha</i>through activation of LOG-mediated cytokinin synthesis

Sesquiterpene Lactones – Insights into Biosynthesis, Regulation and Signalling Roles DOI

Maximilian Frey, Khabat Vahabi, Katarina Cankar

et al.

Critical Reviews in Plant Sciences, Journal Year: 2024, Volume and Issue: 43(3), P. 131 - 157

Published: Feb. 10, 2024

Sesquiterpene lactones (STLs) are bitter tasting plant specialized metabolites derived from farnesyl pyrophosphate (FPP) that contain a characteristic lactone ring. STLs can be found in many families distantly related to each other and outside the kingdom. They especially prevalent Apiaceae Asteraceae, latter being one of largest besides Orchidaceae. The STL diversity is large which made them an ideal object for chemosystematic studies these species. Many show high bioactivity, example as protective compounds against herbivory. also relevant pharmaceutical applications, such treatment malaria with artemisinin. Recent findings have dramatically changed our knowledge about biosynthesis STLs, well their developmental, spatial, environmental regulation. This review intents update currently achieved progress aspects. With advancement genome editing tools CRISPR/Cas rapid acceleration speed sequencing, even deeper insights into biosynthesis, regulation, enzyme evolution expected future. Apart role compounds, there may more subtle regulatory processes plants will discussed well.

Language: Английский

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Evolution of small molecule-mediated regulation of arbuscular mycorrhiza symbiosis DOI

Pierre‐Marc Delaux, Caroline Gutjahr

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1914)

Published: Sept. 29, 2024

The arbuscular mycorrhizal (AM) symbiosis formed by most extant land plants with symbiotic fungi evolved 450 Ma. AM promotes plant growth improving mineral nutrient and water uptake, while the obtain carbon in return. A number of genes regulating steps leading to an efficient have been identified; however, our understanding metabolic processes involved how they were wired regulation during evolution remains limited. Among them, exchange chemical signals, activation dedicated biosynthesis pathways production secondary metabolites late stages begin be well described across several clades. Here, we review current these propose future directions fully grasp phylogenetic distribution role played small molecules this ancient symbiosis. This article is part theme issue ‘The metabolism’.

Language: Английский

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Effects of exogenous SLs on growth and physiological characteristics of flue-cured tobacco seedlings under different degrees of drought stress DOI

Xiaodong Wang, Yinan Zhang,

Xiaoguo Wang

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 20, 2025

Background Drought stress severely affects global crop yields, reduces water availability, and hinders growth. Strigolactones can alleviate damage caused by various abiotic stresses in plants; however, limited research has been conducted on their ability to enhance drought tolerance tobacco. Methods This study evaluated the of ‘Qin Tobacco 96’ (drought-tolerant) ‘Yun 116’ (moisture-sensitive) before after application gibberellic acid lactone at a concentration 0.2 mg·L⁻¹ under three conditions: mild, moderate, severe. The primary traits were identified from 29 related indicators, including agronomic traits, photosynthetic efficiency, reactive oxygen metabolism, antioxidant enzyme activities, osmotic regulators, hormone regulation, using affiliation function, principal component analysis, cluster analysis categorize traits. degree enhancement two tobacco varieties was treatments. Results Spraying exogenous strigolactones reduced adverse effects stress, particularly moisture-sensitive Y116 variety. Under chlorophyll content parameters significantly decreased, whereas strigolactone treatment increased both efficiency. accumulation species malondialdehyde content, enhancing capacity varieties. Additionally, levels osmoregulatory substances activated production enzymes, thereby tolerance. Furthermore, disrupted balance endogenous hormones, decreasing auxin, acid, ribosylzeatin, while increasing abscisic levels. Exogenous restored this hormonal balance. Conclusion Sixteen associated with analyzed classified magnitude D-value determined calculating values function respective weights. results indicated that enhanced across different promoted growth development flue-cured However, interactions between hormones require further investigation elucidate underlying molecular mechanisms. methods should be optimized.

Language: Английский

Citations

KAI2-dependent signaling controls vegetative reproduction in Marchantia polymorpha through activation of LOG-mediated cytokinin synthesis (14) DOI

Aino Komatsu, Mizuki Fujibayashi,

Kazato Kumagai

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 1, 2025

Marchantia polymorpha reproduces vegetatively (asexually) by producing propagules known as gemmae within gemma cups and sexually through spores. We previously reported that KARRIKIN INSENSITIVE2 (KAI2)-dependent signaling promotes cup formation. KAI2A perceives unidentified endogenous ligand(s), tentatively referred to KAI2 ligands (KL). Perception of KL triggers MORE AXILLARY GROWTH2 (MAX2)-dependent proteolysis MpSUPPRESSOR AXILLALRY 1-LIKE (MpSMXL). In this study, we identify genes working downstream KAI2-dependent in M. polymorpha. find positively controls the expression MpLONELY GUY (MpLOG), encoding a cytokinin biosynthesis enzyme. Disruption MpLOG function decreases levels causes defects similar mutants. Moreover, supplying exogenous cytokinins rescues Mplog mutants, implying work signaling. Activation occurs highly cell-type-specific manner, leading cell-specific induction GEMMA CUP-ASSOCIATED MYB1 (GCAM1), master regulator vegetative reproduction propose genetic cascade, starting from signaling, GCAM1. The interaction between provides insights into evolution authors demonstrate which an unknown ligand KL, regulating control expression.

Language: Английский

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Karrikin‐Related Effects on Plant Development, Stress Tolerance, and Beyond DOI

Tamás Bodor,

Gábor Fejes,

Dóra Kondak

et al.

Published: Feb. 10, 2025

Language: Английский

Citations

Ethylene promotes SMAX1 accumulation to inhibit arbuscular mycorrhiza symbiosis DOI

Debatosh Das, Kartikye Varshney, Satoshi Ogawa

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 27, 2025

Language: Английский

Citations

The Multifaceted Impact of Karrikin Signaling in Plants DOI

Qilin Deng, Hongyang Wang,

Yanhong Qiu

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(6), P. 2775 - 2775

Published: March 19, 2025

Karrikins (KARs), produced during wildfires, are bioactive compounds that stimulate seed germination in fire-prone ecosystems and influence broader plant–environment interactions. These act through the α/β hydrolase receptor KARRIKIN INSENSITIVE2 (KAI2), which perceives KARs as analogs of hypothesized phytohormone KAI2 ligand (KL). KAR signaling shares molecular parallels with strigolactones (SLs), another class butenolide plant hormones, regulates diverse processes such seedling development, root architecture, photomorphogenesis, stress responses. Despite its multifaceted roles, mechanistic basis KAR-mediated regulation remains poorly understood. This review synthesizes insights into mechanisms, emphasizing recent advances signal transduction pathways functional studies. It also addresses key unresolved questions, including identity endogenous KL crosstalk between other hormonal networks. By elucidating these KAR-based strategies hold promises for enhancing crop resilience sustainability, offering novel avenues agricultural innovation changing environments.

Language: Английский

Citations

Characterization of a β-carotene isomerase from the cyanobacterium Cyanobacteria aponinum DOI

Derry Alvarez, Yang Yu,

Yoshimoto Saito

et al.

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1914)

Published: Sept. 29, 2024

Carotenoids are essential components of the photosynthetic apparatus and precursors plant hormones, such as strigolactones (SLs). SLs involved in various aspects development stress-response processes, including establishment root shoot architecture. SL biosynthesis begins with reversible isomerization all- trans -carotene into 9- cis -β-carotene, catalysed by DWARF27 β-carotene isomerase (D27). Sequence comparisons have revealed presence D27-related proteins eukaryotes cyanobacteria lacking SLs. To gain insight evolution biosynthesis, we characterized activity a cyanobacterial D27 protein ( Ca D27) from Cyanobacterim aponinum , using carotenoid-accumulating Escherichia coli cells vitro enzymatic assays. Our results demonstrate that is an / -β-carotene isomerase, conversion preference. 13- /15- cis- /9- neurosporene isomerization. Compared enzymes, it exhibited lower -/all- ratio. A comprehensive genome survey single-copy gene genomes 20 out 200 species analysed. Phylogenetic analysis indicated genes form single orthologous group, which considered ancestral type those found eukaryotes. This article part theme issue ‘The meta‌bolism’.

Language: Английский

Citations

Karrikin signalling: impacts on plant development and abiotic stress tolerance DOI

Muhammad Kamran, Kim T. Melville, Mark T. Waters

et al.

Journal of Experimental Botany, Journal Year: 2023, Volume and Issue: 75(4), P. 1174 - 1186

Published: Nov. 24, 2023

Abstract Plants rely upon a diverse range of metabolites to control growth and development, overcome stress that results from suboptimal conditions. Karrikins (KARs) are class butenolide compounds found in smoke stimulate seed germination regulate various developmental processes plants. KARs perceived via plant α/β-hydrolase called KARRIKIN INSENSITIVE2 (KAI2), which also functions as receptor for postulated phytohormone, provisionally termed KAI2 ligand (KL). Considered natural analogues KL, have been extensively studied their effects on crosstalk with hormones. The perception response pathway KAR–KL signalling is closely related strigolactones, another butenolides numerous regulating growth. influences germination, seedling photomorphogenesis, root system architecture, abiotic responses, arbuscular mycorrhizal symbiosis. Here, we summarize current knowledge signalling, focusing its role tolerance, interaction other mechanisms.

Language: Английский

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MID1-COMPLEMENTING ACTIVITY regulates cell proliferation and development via Ca2+ signaling in Marchantia polymorpha DOI

Megumi Iwano, Noriyuki Suetsugu, Ryuichi Nishihama

et al.

PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: 197(1)

Published: Nov. 13, 2024

MID1-COMPLEMENTING ACTIVITY (MCA) is a land plant-specific, plasma membrane protein, and Ca2+ signaling component that responds to exogenous mechanical stimuli, such as touch, gravity, hypotonic-osmotic stress, in various plant species. MCA essential for cell proliferation differentiation during growth development rice (Oryza sativa) maize (Zea mays). However, the mechanism by which mediates via remains unknown. Here, we address this question using liverwort Marchantia polymorpha. We show M. polymorpha ortholog, MpMCA, highly expressed actively dividing regions, apical notches thalli developing gametangiophores, MpMCA protein. In vivo, imaging sensor (yellow cameleon) revealed required maintaining proper [Ca2+]cyt levels notch region, egg cells, antheridium cells. Mpmca mutant plants showed severe defects thalli, gametangia, resulting abnormal unsuccessful fertilization. Furthermore, expression of Arabidopsis MCA1 gene complemented most plants. Our findings indicate an evolutionarily conserved Ca2+-signaling regulates across life cycle

Language: Английский

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