Plants, Journal Year: 2024, Volume and Issue: 13(19), P. 2690 - 2690
Published: Sept. 25, 2024
Caffeic acid O-methyltransferase (
Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(1)
Published: Jan. 1, 2024
Abstract Seed germination (SG) is the first stage in a plant's life and has an immense importance sustaining crop production. Abiotic stresses reduce SG by increasing deterioration of seed quality, reducing potential, vigor. Thus, to achieve sustainable level yield, it important improve under abiotic stress conditions. Melatonin (MEL) biomolecule that interplays developmental processes regulates many adaptive responses plants, especially stresses. this review specifically summarizes discusses mechanistic basis MEL‐mediated MEL regulating some stress‐specific common responses. For instance, induced specific include regulation ionic homeostasis, hydrolysis storage proteins salinity stress, C‐repeat binding factors signaling cold starch metabolism high temperature heavy metal activation aquaporins accumulation osmolytes drought stress. On other hand, mediated gibberellins biosynthesis abscisic acid catabolism, redox Ca 2+ are amongst Nonetheless such as endogenous contents, plant species, growth conditions also influence above‐mentioned In conclusion, interacting with different physiological mechanisms.
Language: Английский
Citations
23
Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 196, P. 260 - 269
Published: Jan. 23, 2023
Language: Английский
Citations
33
PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 26, 2024
Salt stress adversely affects the growth and yield of crops. Glutathione S-transferases (GSTs) are involved in plant responses to biotic abiotic stresses. In this study, 400 mM NaCl significantly induced expression S-transferase U43 (SlGSTU43) roots wild-type tomato (Solanum lycopersicum L.) plants. Overexpressing SlGSTU43 enhanced ability scavenging reactive oxygen species (ROS) leaves under stress, while knock-out mutants showed opposite performance. RNA sequencing analysis revealed that overexpressing affected genes related lignin biosynthesis. We demonstrated can regulate content through its interaction with SlCOMT2, a key enzyme biosynthesis, promote plants stress. addition, SlMYB71 SlWRKY8 interact each other, directly bind promoter transcriptionally activate separately or combination. When were silenced individually collectively, sensitive their GST activities contents decreased. Our research indicates enhance salt tolerance by regulating which is regulated interacting as well SlWRKY8. This finding broadens our understanding functions.
Language: Английский
Citations
10
Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 14
Published: Jan. 16, 2024
Salt stress inhibits plant growth by disturbing intrinsic physiology. The application of exogenous regulators to improve the tolerance against salt has become one promising approaches promote in saline environment. Eugenol (4-allyl-2- methoxyphenol) is main ingredient clove oil and it known for its strong antioxidant anti-microbial activities. also ability inhibiting several pathogens, implying potential use eugenol as an environmental friendly agrichemical. However, little about possible role regulation abiotic stress. Therefore, here we investigated effectiveness phytochemical promoting tobacco seedlings through physiological, histochemical, biochemical method. seedling roots were exposed NaCl solution presence or absence eugenol. inhibited growth, but supplementation effectively attenuated effects a dose-dependent manner, with optimal effect at 20 µM. ROS (reactive oxygen species) accumulation was found upon which further resulted amelioration lipid peroxidation, loss membrane integrity, cell death salt-treated seedlings. Addition highly suppressed reduced peroxidation generation. Both enzymatic non-enzymatic antioxidative systems activated treatment. AsA/DHA GSH/GSSG enhanced treatment, helped maintain redox homeostasis salinity. treatment increase content osmoprotectants (e.g. proline, soluble sugar starch) Na + levels decreased significantly exposure. This may result from upregulation expression two ionic transporter genes, SOS1 (salt-hypersensitive 1) NHX1 (Na /H anti-transporter 1). Hierarchical cluster combined correlation analysis uncovered that induced mediated maintaining balance work reveals plays crucial regulating resistant extend biological function novel biostimulant opens up new possibilities improving crop productivity agricultural
Language: Английский
Citations
7
Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(3)
Published: May 1, 2024
Abstract In recent years, there has been an increase in the study of phytomelatonin. Having numerous functions animals, melatonin produced by plants (phytomelatonin) is also a multi‐regulatory molecule with great potential plant physiology and mitigating abiotic stresses, such as drought, salinity, chilling, heat, chemical contamination, UV‐radiation stress. This review highlights primary phytomelatonin anti‐stress against We discuss role master regulator, oxidative stress manager, reactive oxygen species nitrogen defense compounds inducer. Although exist handful reviews on crosstalk other signaling molecules like auxin, cytokinin, gibberellin, abscisic acid, ethylene, nitric oxide, jasmonic salicylic this looks at studies that have reported few aspects newly discovered along classical relation to tolerance. The research applications hydrogen sulfide, strigolactones, brassinosteroids, polyamines are still their nascent stage but hold promising scope for future. Additionally, states developments metabolism nitrosative plants.
Language: Английский
Citations
7
International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(5), P. 2639 - 2639
Published: Feb. 24, 2024
Caffeic acid O-methyltransferase (COMT) participates in various physiological activities plants, such as positive responses to abiotic stresses and the signal transduction of phytohormones. In this study, 18 COMT genes were identified chromosome-level reference genome mango, named MiCOMTs. A phylogenetic tree containing nine groups (I-IX) was constructed based on amino sequences 71 proteins from seven species. The indicated that members MiCOMTs could be divided into four groups. Quantitative real-time PCR showed all MiCOMT have particularly high expression levels during flowering. different under biotic stresses, including salt stimulated drought ABA SA treatment, well Xanthomonas campestris pv. mangiferaeindicae Colletotrichum gloeosporioides infection, respectively. Among them, level MiCOMT1 significantly up-regulated at 6–72 h after stresses. results gene function analysis via transient overexpression Nicotiana benthamiana can promote accumulation MeJA, improve tolerance mango. These are beneficial future researchers aiming understand biological functions molecular mechanisms genes.
Language: Английский
Citations
5
Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15
Published: Sept. 18, 2024
Drought stress is a major constraint on plant growth and agricultural productivity. Caffeic acid O-methyltransferase (COMT), an enzyme involved in the methylation of various substrates, plays pivotal role responses to abiotic stress. The involvement COMTs drought response, particularly through enhancement lignin melatonin biosynthesis, remains poorly understood. In this study, LcCOMT was firstly proposed be associated with biosynthesis both melatonin, as demonstrated sequence comparison, phylogenetic analysis, conserved motif identification. vitro enzymatic assays revealed that effectively methylates N-acetylserotonin albeit higher K m value compared caffeic acid. Site-directed mutagenesis residues Phe171 Asp269 resulted significant reduction catalytic activity for acid, minimal impact N-acetylserotonin, underscoring specificity these substrate binding catalysis. Under conditions, expression significantly upregulated. Overexpression gene Arabidopsis plants conferred enhanced tolerance, characterized by elevated levels, increased chlorophyll carotenoid content, heightened activities antioxidant enzymes peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), reduced malondialdehyde (MDA) hydrogen peroxide (H 2 O ) accumulation. This study among few demonstrate COMT-mediated tolerance achieved simultaneous promotion biosynthesis. represents first functionally COMT Apiaceae family, it holds potential target genetic future crop improvement strategies.
Language: Английский
Citations
4
Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 204, P. 108097 - 108097
Published: Oct. 14, 2023
Language: Английский
Citations
7
Stress Biology, Journal Year: 2023, Volume and Issue: 3(1)
Published: Dec. 4, 2023
Abstract Seed germination is a complex process regulated by internal and external factors. Melatonin ( N -acetyl-5-methoxytryptamine) ubiquitous signaling molecule, playing an important role in regulating seed under normal stressful conditions. In this review, we aim to provide comprehensive overview on melatonin's effects the basis of existing literature. Under conditions, exogenous high levels melatonin can suppress or delay germination, suggesting that may play maintaining dormancy preventing premature germination. Conversely, conditions (e.g., salinity, drought, extreme temperatures), has been found accelerate modulate expression genes involved ABA GA metabolism, thereby influencing balance these hormones affecting ABA/GA ratio. shown ROS accumulation nutrient mobilization, which impact process. conclusion, inhibit while promoting via ratios, levels, metabolic enzyme activity. Further research area will deepen our understanding intricate contribute development improved treatments agricultural practices.
Language: Английский
Citations
6
The Journal of Horticultural Science and Biotechnology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14
Published: Sept. 20, 2024
Language: Английский
Citations
2