Effects of postharvest methyl jasmonate treatment on persimmon quality during cold storage
About: This article is published in Scientia Horticulturae.The article was published on 2021-11-01 and is currently open access. It has received 11 citations till now. The article focuses on the topics: Methyl jasmonate & Postharvest.
Citations
More filters
TL;DR: In this paper , a review briefly appraises plant responses and adaptation mechanisms to cold stress and then comprehensively reports on the crucial role of several phytohormones in adjusting the cold stress response for plant acclimation.
16 citations
TL;DR: In this article , the effect of calcium treatment on persimmon fruit firmness was studied from the perspective of water-soluble pectin (WSP) content, and it was shown that lower protein degrading enzyme activity inhibited the decrease of WSP molecular weight and branching rate, thus maintaining the integrity of cell wall structure and higher firmness.
4 citations
TL;DR: In this paper , the authors showed that exogenous MeJA application could effectively promote ROS scavenging in the tea plant under cold stress, maintaining the stability of the cell membrane, and provided new insight into how MYB TFs influence cold tolerance via the jasmonic acid pathway in tea and provide candidate genes for future functional studies and breeding.
Abstract: Low-temperature stress is an increasing problem for the cultivation of tea (Camellia sinensis), with adverse effects on plant growth and development and subsequent negative impacts on the tea industry. Methyl jasmonate (MeJA), as a plant inducer, can improve the cold-stress tolerance in tea plants. R2R3-MYB transcription factors (TFs) are considered potentially important regulators in the resistance to cold stress in plants. However, the molecular mechanisms, by which MYB TFs via the jasmonic acid pathway respond to cold stress in the tea plant, remain unknown. In this study, physiological and biochemical assays showed that exogenous MeJA application could effectively promote ROS scavenging in the tea plant under cold stress, maintaining the stability of the cell membrane. Sixteen R2R3-MYB TFs genes were identified from the tea plant genome database. Quantitative RT-PCR analysis showed that three CsMYB genes were strongly induced under a combination of MeJA and cold-stress treatment. Subcellular localization assays suggest CsMYB45, CsMYB46, and CsMYB105 localized in the nucleus. Exogenous MeJA treatment enhanced the overexpression of CsMYB45, CsMYB46, and CsMYB105 in E. coli and improved the growth and survival rates of recombinant cells compared to an empty vector under cold stress. Yeast two-hybrid and bimolecular fluorescence complementation experiments confirmed that CsMYB46 and CsMYB105 interacted with CsJAZ3, CsJAZ10, and CsJAZ11 in the nucleus. Taken together, these results highlight that CsMYB45, CsMYB46, and CsMYB105 are not only key components in the cold-stress signal response pathway but also may serve as points of confluence for cold stress and JA signaling pathways. Furthermore, our findings provide new insight into how MYB TFs influence cold tolerance via the jasmonic acid pathway in tea and provide candidate genes for future functional studies and breeding.
2 citations
TL;DR: In this paper , MeJA was used to treat postharvest scales of Lilium brownii var. viridulum, and qRT-PCR results indicated that MeJA significantly activated the expression of key genes involved in phenylpropanoid metabolism, including phenylalanine ammonia-lyase (PAL), cinnamate-4-hydroxylase (C4H) and 4-coumarate-CoA ligase (4CL), consequently improving their enzyme activities.
1 citations
TL;DR: In this paper , the implications of PGR applications during cultivation on fruit postharvest are discussed, and the main effects of the field application of these PGRs appear to be the stimulation of antioxidant enzymes activity and the maintenance of cell membrane integrity during storage.
References
More filters
TL;DR: The changes in lipid peroxidation during drying and subsequent rehydration of both the mosses appear to coincide in time with the reported changes in O2 uptake, indicating that the drought-induced membrane damage may be due to free radical-induced lipid per oxidation which is known to require active O2 absorption.
Abstract: Drought-induced changes in the activities of superoxide dismutase (SOD) and catalase, level of lipid peroxidation, and membrane permeability (solute leakage) have been studied in two mosses, the drought-tolerant Tortula ruralis and the drought-sensitive Cratoneuron filicinum. In T. ruralis the activities of SOD and catalase increase during slow drying. The level of lipid peroxidation consequently declines. On subsequent rehydration the enzyme activities decline and the level of lipid peroxidation rises gradually to normal levels. The leakage of preloaded !6Rb on rehydration of slowly dried T. ruralis is similar to that in turgid moss, i.e. leakage of about 20% of tissue "Rb. When T. ruralis is subjected to rapid drying there is no change in the enzyme activities or in lipid peroxidation. However, when this moss is rehydrated there is a large immediate increase in lipid peroxidation. Half of the tissue 86Rb is leaked into the bathing medium during the first hour of rehydration. But within the next hour, when SOD and catalase activities have increased to high levels, lipid peroxidation quickly declines to a level lower than that in the turgid control moss, and the "Rb leaked earlier is partly reabsorbed indicating that membrane repair is well underway. On prolonged rehydration the enzyme activities decline and the level of lipid peroxidation rises gradually to reach normal levels found in control turgid moss. In the case of drought-sensitive C. filicinum the activities of SOD and catalase decline during drying as well as during subsequent rehydration. There is a rapid increase in lipid peroxidation during rehydration and most of the preloaded "Rb leaks into the bathing medium irreversibly. The changes in lipid peroxidation during drying and subsequent rehydration of both the mosses appear to coincide in time with the reported changes in O2 uptake, indicating that the drought-induced membrane damage may be due to free radical-induced lipid peroxidation which is known to require active O2 uptake. Furthermore, there appears to be a good correlation between an ability of the tissue to control lipid peroxidation and its ability to retain solutes. It is suggested that ability of plant tissues to mobilize enzymatic defence against uncontrolled lipid peroxidation may be an important facet of their drought tolerance.
607 citations
TL;DR: It is demonstrated that, in addition to blockwise de-esterification, HG with a non-blockwise distribution of methyl esters is also an abundant feature of HG in primary plant cell walls, implications for understanding of both the action of pectin methyl esterases on matrix properties and mechanisms of intercellular adhesion and its loss in plants.
551 citations
TL;DR: In this article, MeJA response genes encoded the JA biosynthesis pathway proteins and key regulators of MeJA responses, including most JA ZIM domain proteins and MYC2, together with transcriptional regulators with potential, but yet unknown, functions in MeJA signaling.
Abstract: Jasmonates (JAs) are plant-specific signaling molecules that steer a diverse set of physiological and developmental processes. Pathogen attack and wounding inflicted by herbivores induce the biosynthesis of these hormones, triggering defense responses both locally and systemically. We report on alterations in the transcriptome of a fast-dividing cell culture of the model plant Arabidopsis thaliana after exogenous application of methyl JA (MeJA). Early MeJA response genes encoded the JA biosynthesis pathway proteins and key regulators of MeJA responses, including most JA ZIM domain proteins and MYC2, together with transcriptional regulators with potential, but yet unknown, functions in MeJA signaling. In a second transcriptional wave, MeJA reprogrammed cellular metabolism and cell cycle progression. Up-regulation of the monolignol biosynthesis gene set resulted in an increased production of monolignols and oligolignols, the building blocks of lignin. Simultaneously, MeJA repressed activation of M-phase genes, arresting the cell cycle in G2. MeJA-responsive transcription factors were screened for their involvement in early signaling events, in particular the regulation of JA biosynthesis. Parallel screens based on yeast one-hybrid and transient transactivation assays identified both positive (MYC2 and the AP2/ERF factor ORA47) and negative (the C2H2 Zn finger proteins STZ/ZAT10 and AZF2) regulators, revealing a complex control of the JA autoregulatory loop and possibly other MeJA-mediated downstream processes.
391 citations
TL;DR: In this paper, the effect of methyl jasmonate (MeJA) treatment on chilling injury and changes in the antioxidant system of Loquat fruit was investigated, and the reduction in chilling injury by MeJA may be due to enhanced antioxidant enzyme activity and higher unsaturated/saturated fatty acid ratio.
267 citations
TL;DR: Additional sources for horticultural improvement, where JAs might be involved, are defense against nematodes, biocontrol by plant growth promoting rhizobacteria, altered composition of rhizosphere bacterial community, sustained balance between growth and defense, and improved plant immunity in intercropping systems.
256 citations